Danfoss PAHT 256, 308, PAHT G 256, 308 high pressure pump User manual

MAKING MODERN LIVING POSSIBLE

User manual

Installation, Operation and

Maintenance Manual for

PAHT / PAHT G 256-308 pumps

PAHT/PAHT G 256 and

PAHT/PAHT G 308

danfoss.high-pressurepumps.com

User manual

Table of Contents

Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

EU Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1 . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1 .1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1 .2 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1 .3 Manufacturer and customer service address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

2 . Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

2 .1

2 .2

2 .3

2 .4

2 .5

General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Preferred system design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Commissioning and servicing the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Adhere to the following important points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

In case of doubt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3 .

3 .1

3 .2

3 .3

3 .4

3 .5

Noise and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Dimension drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3 .6 Space requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3 .7 Filtration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3 .8

3 .9

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Approved applications and operational limits for the pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Application range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Electric motor data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Properties of water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Air bubbles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3 .10 Chemicals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4 .

4 .1

Arrival inspection, transportation, handling, lifting and storage . . . . . . . . . . . . . . . . . . . . . . . . . .9

Arrival inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4 .2 Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4 .3

4 .4

4 .5

General safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Transport and handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Return to supplier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

4 .6 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

5 .

5 .1

5 .2 Cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

5 .3

5 .4

5 .5

5 .6

5 .7

5 .8

Installation and commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Important dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Fluid temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Local regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Pre mounting checklist, based on Danfoss preferred system designs . . . . . . . . . . . . . . . . . . . .12

Lifting and positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Mount the different equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5 .9 Electrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5 .10 Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5 .11 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5 .12

5 .13

Ensure free flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Verify setting of safety/relief valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Bleed and remove air from the pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Verify direction of rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

5 .14

5 .15

5 .16 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

5 .16 .1

5 .16 .2

5 .17

5 .18

Open system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Closed system (not applicable for PAHT/PAHT G 256-308) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Check the filter condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Instruct operator and maintenance personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

6 .

6 .1

6 .2

Operation of motor pump unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

General safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

What to listen and look for . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

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User manual Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

7 .

7 .1

7 .2

7 .3

7 .4

7 .5

7 .6

7 .7

7 .8

Maintenance and service of the pump unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

General safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Service and inspection interval for the pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Shut down of the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Disassembling and assembling the pump unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Assembling the pump unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Procedure for mounting the pump back onto electric motor . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Getting the pump unit back into operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Storage of the pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

8 .

8 .1

8 .2

8 .3

Troubleshooting and scrapping criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

General safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Operational conditions which can cause pump failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Mechanical failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

8 .4 Electrical failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

8 .5 Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

8 .6 Scrapping criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

2 .

3 .

4 .

5 .

6 .

Appendices for Installation, Operation and Maintenance Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

1 .

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Data sheet PAHT / PAHT G 2-308 pumps (521B1247) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Pump instruction PAHT/PAHT G 256-308 (180R9257) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Electric motor manual (180R9230) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Parts list PAHT and PAHT G (521B1237) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps . . . . . . . . . . . . .63

Right and wrong - Trouble shooting guide for water hydraulic systems (180R9042) . . . . . . .73

Subject index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

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Validity

Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

This manual is valid for PAHT and PAHT G pumps with the following code numbers/serial numbers:

PAHT 256

PAHT G 256

PAHT 308

PAHT G 308

Code no .

Serial no .

Code no .

Serial no .

Code no .

Serial no .

Code no .

Serial no .

180B1001

01

180B6090

02

180B1002

01

180B6091

02

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EU Declaration of Conformity

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User manual

1. Introduction

Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

1.1 General

The PAHT and PAHT G pumps and pump units are manufactured by Danfoss A/S, and are sold and marketed by a net of authorized distributors world wide .

This manual contains the necessary instructions for the installation, operation and service of the pumps used for technical water .

In case the pump delivered is ATEX certified, the additional ATEX instruction must also be read .

The PAHT pumps must not be used for other purposes than those recommended and specified without first consulting your local pump distributor .

In the following text - Installation, Operation and

Maintenance Manual, the PAHT and PAHT G pumps will be called PAHT pumps .

• Operation outside the Danfoss specifications requires a written approval from Danfoss

High Pressure Pumps .

• If any changes are made without written approval the warranty will automatically become void .

It is important that these instructions are always available to the personnel concerned.

1.2 Symbols

Indicates something to be noted by the reader

Indicates a situation which will or could result in damage to the pump and its function

Use of the pump in other applications not suitable for the pump unit can cause damages to the pump unit, with risk of personal injury .

Indicates a situation which will or could result in personal injury and/or damage to the pump

Electrical hazard - Indicates a high- voltage warning

All personnel being responsible for operation and maintenance of the pump unit must read and fully understand these instructions, especially the section “Safety”, before:

• Transportation of the pump unit

• Lifting the unit

• Installing the pump unit

• Connecting the pump unit to the water system

• Connecting the electric motor and instrumentation

• Commissioning the unit

• Servicing the motor pump unit, mechanical and electrical parts

• Decommissioning the motor pump unit

The pump must always be installed and used in accordance with existing national/local sanitary, safety regulations and laws.

It is the responsibility of the safety officer or the chief operator to assure compliance with all local regulations that are not taken into account in this manual.

!

Safety glasses required

Hearing protection required

Safety shoes required

Safety helmet required

Protective garments must be worn

Protective garments must be worn

Danger HOT .

Do not touch

Electrical hazard

Electrical hazard

Changing the pumps’ or pump units’ operational limits and hardware:

• Changes to the delivered pump or motor pump system may only be done with a written approval from Danfoss High Pressure

Pumps .

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User manual

2. Safety

Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

1.3 Manufacturer and customer service address:

Danfoss A/S

High Pressure Pumps

Nordborgvej 81, D25

DK-6430 Nordborg

Denmark

Telephone: +45 7488 2222

Fax: +45 7445 3831

Email: highpressurepumps@danfoss .com

Web: www .danfoss .high-pressurepumps .com

Your local Danfoss pump distributor can be found on our homepage .

CE Declaration of Conformity can be found on page 5 .

2.1 General information

Dangers that can arise from not following the instructions:

When the pump or pump system is managed by untrained personnel, there is a danger of:

• Death or fatal injuries

• Costly damages and claims

All electrical installation work must only be carried out by authorized personnel in

accordance with EN60204-1 and/or local regulations .

It is recommended to install a lockable circuit breaker to avoid inadvertent starting and/or electrical hazard . The lockable circuit breaker must be used during installation, operation and maintenance .

It is recommended to place a local safety switch nearby the pump, enabling service personnel to cut power for the electric motor .

Protect the motor and other electrical equipment from overloads with suitable equipment .

In case the pump delivered is ATEX certified, the additional ATEX instruction must also be read .

!

Electrical hazard

Protective garments must be worn

Under certain operational conditions the surface of the pump can be above 60°C / 140°F .

Under these conditions the pump must be labelled with a “Danger Hot” sign .

When using an electric motor, the motor must always be supplied with adequate cooling ventilation .

When using an electric motor together with a

VFD (Variable Frequency Drive), the motor must be designed for operation with VFD . VFD operation may increase the temperature inside the electric motor if the motor is not designed for VFD operation . This can damage the motor and cause unintended breakdown .

Before start-up, the settings for all protective devices, such as sensors/switches and safety valves must be verified and free flow from safety valves must be ensured .

All pipe and hose connections must be stressfree mounted, securely fastened to the pump and well supported . Improper installation will or could result in personal injury and/or damage to the pump .

Use of this manual does not relieve operation and maintenance personnel of the responsibility of applying good judgment when operating and maintaining the pump and its components.

Always wear suitable safety clothing when handling the pump .

When working near the pump system, safety shoes, safety glasses, hearing protection and safety helmet must always be worn .

2.2 Preferred system design

Danfoss recommends to build systems with a high degree of safety . Danfoss preferred system design and P&ID are found in appendix 1, Data sheet, and appendix 2, Instruction .

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3. Technical data

Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

It is always the system builders´ responsibility that the system design does not cause any kind of hazard and is adapted to local regulations and standards .

Proper installation, proper start up and shutdown devices as well as high-pressure protection equipment is essential .

2.3 Commissioning and servicing the unit

It is recommended that commissioning and servicing are carried out by a minimum of two people, where one is acting as a supervisor .

•

•

•

•

•

•

Do not try to lift the pump unit manually; most of the pumps weigh more than

20 kilos, see specific weight for the pump in the appendix 1, Data sheet .

Always bleed the pump prior to initial start-up .

Do not mount the pump without the bell housing and a flexible coupling .

Do not try to start the unit before the system components are mounted, bleeded and adjusted .

Flush the system throughly before connecting the pump or pump unit .

Check rotation direction of the motor before mounting the pump .

2.4 Adhere to the following important points

• Before using the pump/pump unit it is very important to read and understand this user manual .

2.5 In case of doubt

Please contact Danfoss A/S in case of doubt .

Contact information are listed in section 1 .3,

Manufacturer and customer service address .

3.2 Application range

See appendix 1, Data sheet .

3.3 Electric motor data

See recommended motor in appendix 1, Data sheet or appendix 3, IOM for motors . The motors mentioned are the most common used motors by Danfoss High Pressure Pumps .

3.4 Noise and vibration

Noise level for a pump unit with a ”standard” motor measured according to EN ISO 3744:2010, see appendix 1, Data sheet . Possibilities to reduce noise and vibration are described in the same Data sheet .

3.1 Approved applications and operational limits for the pumps

The pump and the pump units are designed for the use in systems with technical water.

The PAHT pumps must not be used for other purposes than those recommended and specified without first consulting your local pump distributor.

3.5 Dimension drawings

Dimensions of the different pumps can be found in appendix 1, Data sheet .

3.6 Space requirement

When doing service or replacing the complete pump unit, it is recommended to have sufficient space available around the pump in order to ensure easy access . Sufficient space means at least 1 meter/40 inches around the pump . When working with high pressures, it is important to have the right space available around the pump as stated in the safety requirements .

Use of the pump in other applications not suitable for the pump unit can cause damages to the pump unit, with risk of personal injury.

For system integration of the pumps, please see appendix 1, Data sheet and appendix 2,

Instruction.

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User manual Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

3.7 Filtration

(10µm absolute [β

10

≥ 5000])

Requirements are specified in appendix 1, Data sheet and appendix 2, Instruction .

Danfoss recommends not to build a filter bypass function or use filters with an integrated bypass .

If the above recommendation is not followed the warranty for the pump will automatically become void .

It should be possible to monitor the condition of the filter via the differential/delta pressure across the filter .

Using insufficient filtration or a filter bypass can cause a failure or decreased service life of the pump.

3.8 Properties of water

It is recommended NOT to use the pump for other media than specified in the Data sheet .

3.9 Air bubbles

Large bubbles in a pressurised system can result in damage to piping, equipment and the pump .

All air must be bleeded from both the low- pressure and high-pressure side before the system is pressurised . Special consideration should be given in order to minimize air bubbles in the feed flow . Air bubbles can cause cavitation .

3.10 Chemicals

The pumps should not be exposed to any chemicals that can result in damage to piping, equipment and internal parts of the pump .

4. Arrival inspection, transportation, handling, lifting and storage

4.1 Arrival inspection

The pump is packed in a cardboard or wood box with plugs in the port connections to protect the pump from damage during transportation .

When the shipment has arrived it is important to check the pump for any damages . The name plate/type designation must be in accordance with the delivery note and your order .

In case of damage and/or missing parts, a report should be documented and presented to the carrier at once .

4.4 Transport and handling

Small pumps which have a weight below 20 kilos

(weight can be found in appendix 1, Data sheet) can be handled by hand if they are not mounted together with an electric motor . The weight of a small pump with a motor will be above 20 kilos .

4.2 Warning

Before any lifting operation is performed, environmental conditions must be taken into consideration (Ex-rated areas, wind speed, wet/ dry conditions, lifting height, etc .) .

4.3 General safety information

Personnel involved in lifting and transporting the equipment (see Safety, chapter 2) must be trained in handling and safety procedures when lifting heavy loads . Many of the pumps and pump units weigh more than 20 kilos, which requires lifting slings and suitable lifting devices; e .g . an overhead crane or industrial truck to be used as minimum .

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User manual Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

Pumps which have a weight above 20 kilos (see appendix 1, Data sheet) must be handled by using lifting eyes and slings .

Wrong lifting:

10

Never use only one sling and make sure the slings does not slip off the pump .

When the pump is mounted together with an electric motor, the pump unit always weigh more than 20 kilos and must be handled by using slings around the pump unit .

See below examples of where to/not to attach the lifting slings on the pump unit:

Correct lifting with 2 separate slings:

When lifting the pump unit, one sling must be attached to the electric motor and one sling around the pump .

Only some motors and pumps have specific lifting eyes .

Do not use connections/nozzles for lifting!

Do not use only one sling!

Make sure that the unit/load is balanced before lifting . The centre of the mass varies from pump/ pump unit size to pump/pump unit .

How to mount the pump and the electric motor correctly, see appendix 1, Data sheet or appendix

2, Instruction .

Incorrect lifting can result in personal injury and/or damage to the pump unit, see appendix

2, Instruction.

4.5 Return to supplier

Please see maintenance chapter 7 .

4.6 Storage

Each pump is tested before shipment, and will therefore contain water . For storage temperature and frost protection see appendix 2, Instruction .

The pumps are NOT delivered frost protected from the factory.

180R9289 / IOM PAHT/PAHT G 256-308 pumps - v01 / 05.2013

Reservoir

PI

User manual

5. Installation and commissioning

Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

5.1 Important dimensions

Physical dimensions and connections of the pump unit are described in appendix 1, Data sheet .

5.3 Fluid temperature

Before start-up, the fluid and pump housing temperature must be within the specified temperature range listed in appendix 1, Data sheet .

5.2 Cleanliness

It is very important that the tubes and pipes are

completely clean: no dirt, chips or burrs are allowed .

Flush all piping before connecting the high- pressure pump to ensure the system is clean .

Internal surfaces of the piping must not be corroded . If dirt or rust is not removed, the pump and the valves can be damaged . In worst case the pump can be damaged beyond repair!

5.4 Electrical data

Check voltage, current frequency and rated power on the electric motor and VFD settings on the name plate placed on both the motor and the VFD .

5.5 Local regulations

Commissioning must always be done in

accordance with valid regulations and local standards .

Open system design

PI

PI

2

Closed system design (not applicable for PAHT/PAHT G 256-308)

1

System

PI

Reservoir

PI PI

1

System

PI

2

11

PI

System

User manual

12

Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

5.6 Pre mounting checklist, based on Danfoss preferred system designs

Table 1: Check points when assembling and commissioning system

CP1

CP2

Check points

Ensure that the environmental conditions are safe .

Minimum and maximum start-up temperature for fluid and pump .

CP3

Filtration condition (10µm absolute (β

10

≥ 5000)

Comment

See Arrival inspection, transportation, handling, lifting and storage, chapter 4 .

See Data sheet or Instruction, appendices 1 and 2 .

See Danfoss requirements in

Data sheet and Instruction, appendices 1 and 2

CP4

Power supply for electric motor and VFD .

CP5

Safety circuit / breaker must be sized for the motor and environment (corrosion and humidity)

CP6

Bolts and screws must conform to environmental conditions as well as fluid and torque requirements .

CP7

Instrumentation, pressure switch should be designed to conform to the environment (corrosion and humidity) .

See Data sheet for the used motor and VFD .

See Data sheet for the used safety circuit .

CP8

Check the factory settings of the safety/relief valves or pressure relief valves (1) .

CP9

Check the settings of the pressure transmitter/switch (2) set at min . inlet pressure .

See Data sheet for the used equipment .

See Data sheets for the used valves .

See Data sheet or Instruction, appendices 1 and 2 .

CP10 Check that all pressure indicators (PI) are selected to be able to measure the system pressure range .

CP11 Check coupling distance ( air gab – movement of the spider )

3 – 5 mm

CP12 Check correct connections on the pump ( in & outlet)

CP13 Check piping for possible air gaps .

Scaling should at least be 1 Bar or more precise .

OK ?

5.7 Lifting and positioning

Lift the pump unit onto base (Remember vibration dampers, if needed) . Fasten the motor to the base .

See also chapter 4, Arrival inspection, transportation, handling, lifting and storage .

5.8 Mount the different equipment

(connections, pipes, tubes, check and safety/relief valves, etc.)

• The hard piping and flexible hoses used must be of proper design and must be installed in accordance with the manufacturer’s recommendations .

• Misalignment of the hard pipes may give unintended stress on the pump port connection and may damage the pump .

• Prevent excessive external pipe load .

• Do not connect piping by applying external force (use of wrenches, crane, etc .) Piping must be aligned without residual stress .

• Do not mount expansion joints so that their force applies internal pressure on the pump connections .

5.9 Electrics

All electrical installation work must be carried out by authorized personnel in accordance with

EN60204-1 and/or local regulations . (see also

Safety, chapter 2)

Turn off the safety circuit breaker and lock it .

Mount the power cable on the electric motor .

If a VFD is used, adjust the protective motor switch/VFD to the current limits found on name plate of the electric motor .

5.10 Instrumentation

The pressure switch/sensor should be mounted as close to the pump as possible . It is recommended to test the pressure/sensor switch via an instrumentation manifold .

Mount the pressure switch/sensors according to the manufacturer’s instructions .

5.11 Connections

Mount and tighten connections and check valve(s) as specified .

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User manual Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

5.12 Ensure free flow

Ensure free flow from relief valve (table 1, item

5 .6, CP 8) . A blocked relief valve can cause excessive build-up of pressure and thereby cause dangerous situations and damage to the whole system .

• Check the temperature switch/controls . The high-pressure pump must stop if temperature is above specified set point .

• Check the pressure switch/controls . The high-pressure pump must stop if pressure is below specified set point .

• If the system is running within the system design limits, the system is released for operation .

5.13 Verify setting of safety/relief valves

Make sure, the relief valve is placed correctly (see open system design, item 1) .

Check the pressure settings on the name plate of the relief valve . If they are within specifications, you can continue .

5.14 Bleed and remove air from the pump

Open bleeding plugs . Keep the plugs open until the high-pressure pump is bleeded .

If the pump is submerged, remove all bleeding plugs before mounting in reservoir .

5.15 Verify direction of rotation

The direction of rotation must always follow the arrow . The arrow is placed on the pump or pump unit .

Check the direction of rotation before mounting the pump .

Unlock the safety circuit breaker . Start the motor for 1 second and observe the direction of rotation either looking on the fan of the motor or on the coupling through the hole in the bell housing (not available on all bell housings) . If the motor is turning the wrong direction, switch two phases in the connection box of the motor or reprogram the direction in VFD .

When the motor is turning in the right direction, the pump can be mounted .

•

•

5.16.2 Closed system (not applicable for

PAHT/PAHT G 256-308)

•

Check if the reservoir is clean.

Check if filter element is present and mounted correctly .

Fill water at the reservoir using the filling

•

•

•

•

•

•

•

•

• valve . Inspect immediately for leakage .

Bleed high-pressure pump until only water leaves the high-pressure pump . Remember to close all bleeding and draining plugs .

Adjust pressure relief valve to minimum setting .

Check rotation of the high-pressure pump by description in 5 .15 .

Start high-pressure pump for 2 minutes, to make sure all air is out of the system .

Check reservoir low level switch/controls.

The high-pressure pump must stop if low level switch is activated .

Adjust pressure relief valve to working pressure .

Check the temperature switch/controls.

The high-pressure pump must stop if temperature is above specified set point .

Check the filter pressure switch/controls. A warning must be given if pressure is above specified set point .

If the system is running within the system design limits, the system is released for operation .

5.17 Check the filter condition

Evaluate contamination found in filter, replace filter elements, if necessary .

5.16 Commissioning

5.16.1 Open system

• Check if filter element is present and mounted correctly .

• Switch on the circuit breaker for both motor(s) and VFD(s) .

• Check rotation of the feed pump .

• Start feed pump .

• Bleed high-pressure pump until only water leaves the high-pressure pump . Remember to close all bleeding and draining plugs .

• Adjust pressure relief valve to minimum setting .

• Check rotation of the high-pressure pump by description in 5 .15 .

• Start high-pressure pump for 2 minutes, to make sure all air is out of the system .

• Adjust pressure relief valve to working pressure .

• Check all fittings for leakage .

5.18 Instruct operator and maintenance personnel

Before using the pump/pump unit, the personnel must be instructed in using the pump/pump unit, its function, components, documentation and safety .

Danfoss offers commissioning and service at system manufacturer’s location . Rate quotes are offered upon request .

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User manual

6. Operation of motor pump unit

Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

6.1 General safety information

Before inspecting the pump unit, read the Safety chapter 2 in this user manual .

6.2 What to listen and look for

If one or more of the following examples are observed, please act as indicated:

A) Loose bolts – check all bolts and, if necessary, contact the maintenance department in order to have all bolts tightened to the specified torque(s) .

B) Leakage – if a small leakage from the bell housing is observed . Contact the maintenance department .

C) Leakage – if there is a large leak, the unit should be stopped immediately . Contact the maintenance department .

D) High frequency tones – safety/relief valves are either damaged or running very close to their design pressure, stop the unit immediately . Contact the maintenance department .

E) Increased noise or vibration – requires the unit to be stopped immediately . Contact the maintenance department .

F) Very high temperatures – may indicate that one or more parts are damaged inside the pump . The pump must be stopped immediately and inspected before it is restarted . Contact the maintenance department .

G) Drop in flow and/or pressure – may indicate wear on one or more parts inside the pump . The pump must be stopped immediately and inspected before it is restarted . Contact the maintenance department .

H) Other observations or troubles, please see appendix 7, Right and Wrong or appendix

6, Trouble shooting guide . Both appendices give good advises on design, installation, wiring and troubleshooting .

If the pump is not stopped for inspection as recommended, it can lead to damage of the pump or break-down . See also service and warranty section in appendix 1, Data sheet and appendix 2, Instruction .

Danfoss offers service of the pump at the system manufacturer’s location as well as we offer training in how to service the pump . Quotes are offered upon request .

Danfoss recommends simultaneously to check the filter and membrane condition and to evaluate contamination; filter and membrane elements must be replaced if necessary .

7. Maintenance and service of the pump unit 7.1 General safety information

Before servicing the pump unit, it is necessary to read and understand this user manual, especially the Safety, chapter 2 . Remember to wear suitable safety equipment according to Safety, chapter 2 .

Danfoss offers service of the pump at the system manufacturer’s location and training in how to service the pump . Quotes are offered upon request .

7.2 Service and inspection interval for the pump

Maintenance and service intervals are depending on the cleanliness level of the water, hydraulic load and temperature of the pump unit . The most important parameter is the filtration of the water .

7.3 Shut down of the system

A) Stop the high-pressure pump .

B)

C)

Release the pressure .

Stop the feed pump if used .

See the section Service and warranty in the appendix 1, Data sheet and appendix 2, Instruction .

For spare parts and service tools, please see appendix 4, Parts list .

D) Switch off the safety circuit breaker for both the high-pressure pump, feed pump and VFD and lock them . Only personnel servicing the pump unit should be able to unlock/activate the switch again .

E) Open bleeding and drain plugs . Wait until the pump and system are emptied for water .

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User manual Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

F) Slowly unscrew and remove the bolts and gaskets from the inlet/outlet hoses or pipes, be careful about jets of water . Be aware that the system can be pressurized .

G) Attach the lifting equipment to the pump unit . For instructions on lifting the complete pump unit, see chapter 4, Arrival inspection, transportation, handling, lifting and storage .

H) For the small pumps, unscrew the bolts holding the pump to the bell housing and for the bigger pumps, unscrew the bolts/ nuts from the pump and bell housing to the motor and afterwards unscrew the bolts/nuts holding the pump and bell housing .

Returns without a return number will be rejected !!!

7.5 Assembling the pump unit

Assemble the pump according to the Disassembling and Assembling Instruction (available at www . danfoss .high-pressurepumps .com) .

I) Carefully pull the pump out of the bell housing by using lifting equipment, if necessary .

J) Hold the pump in different positions above a drip tray; this should allow most of the water trapped in the pump to drain . Clean and dry the pump surface and plug the bleeding and draining plugs .

7.4 Disassembling and assembling the

A)

pump unit

Remove all connections from the pump .

7.6 Procedure for mounting the pump back onto electric motor

K) Move the pump to a clean and safe location where the pump can be inspected/ serviced .

Mount the flexible coupling and bell housing according to appendix 2, Instruction .

7.7 Getting the pump unit back into operation

Find instructions of how to put the pump unit back into operation in chapter 4, Arrival inspection, transportation, handling, lifting and storage and Installation and commissioning, chapter 5 .

B) Disassemble the pump according to the

Disassembling and Assembling Instruction

(available at www . danfoss .high-pressurepumps .com) .

Clean all the parts and surfaces with a fluid compatible with the materials found in the pump . Wipe the parts clean and dry with a lint-free clothing .

C) Inspect all parts including shaft seal and if necessary, replace them; see appendix 4,

Parts list .

D) If the pump is going to be returned to

Danfoss for repair or a warranty claim, it is important to contact Danfoss in order to receive a return number and a form to fill out with product information . A copy of the form together with contact information and reason for returning should be sent to the email address on the form . The same documents should be attached to the shipment .

7.8 Storage of the pump

If the pump has to be shut down for a longer period, instructions can be found in appendix 2,

Instruction .

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15

User manual

8. Troubleshooting and scrapping criteria

Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

8.1 General safety information

Before inspecting the pump unit, it is necessary to read and understand this user manual, especially the Safety chapter 2 .

Remember to wear suitable safety equipment according to Safety chapter 2 .

•

•

•

•

•

•

•

•

•

•

•

8.2 Operational conditions which can cause pump failures

The following conditions can cause a pump failure :

The pump is running dry.

The inlet pressure is too high.

The inlet pressure is too low.

The temperature of the fluid is too high.

The ambient temperature is too high.

The pump is running against a blocked port/closed manual valve .

The pump is operating at a pressure out of specification .

The pump is running with a non-specified/ approved fluid .

The pump is running in the wrong direction .

The filtration is insufficient.

There is excessive mechanical load on the shaft coupling and piping .

Electrical hazard

8.4 Electrical failure

If the wiring of the electric motor is incorrect or the ground connection is missing, it can cause electric shock, burn damages, fire or even death .

If a VFD is used and wrongly programmed, it can damage the pump and lead to high temperatures or other dangers .

All electrical installation must be carried out by authorized personnel in accordance with

EN60204-1 and/or local regulations .

8.5 Responsibility

Danfoss takes no responsibility for any abnormal injuries, risks or damages that could arise caused by abnormal conditions, vibrations, corrosion, abrasives, foreign objects or excessive temperatures and shall not be liable for any consequential or incidental damages .

8.6 Scrapping criteria

Whether the pump can be repaired or need to be scrapped, depends on in which conditions the internal parts are, or how damaged the whole unit is . Please use appendix 5, Trouble shooting guide as guideline or send the pump to Danfoss headquarter in Denmark for evaluation .

For other observations or troubles, please see appendix 6, Right and Wrong which gives good advises regarding design, installation, wiring and troubleshooting .

In case the pump needs to be scrapped, please follow your local environmental rules .

8.3 Mechanical failure

If the pump is running dry, the temperature will quickly increase which can cause burns .

If there is any leakage at start-up or during operation, a high pressure jet can cause eye or skin damage .

Leakage can result in flooding, which can cause slipping, tripping or falling .

If water is dripping into the electric motor; it can cause electric shock, fire, short of circuit or even death . When mounting the pump vertically, always mount the motor above the pump to avoid water leaking into the electric motor .

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MAKING MODERN LIVING POSSIBLE

User manual

Appendices for Installation, Operation and Maintenance Manual

PAHT / PAHT G 20-90 pumps

PAHT/PAHT G 256 and

PAHT/PAHT G 308

danfoss.high-pressurepumps.com

User manual

Table of Contents

Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

3 .

4 .

1 .

2 .

5 .

6 .

Data sheet PAHT / PAHT G 2-308 pumps (521B1247) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Pump instruction PAHT/PAHT G 256-308 (180R9257) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Electric motor manual (180R9230) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Parts list PAHT and PAHT G (521B1237) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps . . . . . . . . . . . . .63

Right and wrong - Trouble shooting guide for water hydraulic systems (180R9042) . . . . . . .73

18

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MAKING MODERN LIVING POSSIBLE

1. Data sheet PAHT /

PAHT G 2-308 pumps

Data sheet

PAHT 2-308 pumps /

PAHT G 2-308 pumps

danfoss.high-pressurepumps.com

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

Table of Contents

Data sheet

PAHT / PAHT G 2-308 pumps

(521B1247)

1.

2.

3.

4.

4.1

4.2

4.3

4.4

5.

5.1

5.2

5.3

5.4

5.5

Introduction

Benefits

Application examples

Technical data

PAHT 2-12.5

PAHT 20-32

PAHT 50-90

PAHT 256-308

Flow

PAHT 2-6.3 flow curves at max pressure

PAHT 10-12.5 flow curves at max pressure

PAHT 20-32 flow curves at max pressure

PAHT 50-90 flow curves at max pressure

PAHT 256-308 flow curves at max pressure

6.

7.

7.1

7.2

7.3

7.4

Motor requirements

Installation

Filtration

Noise

Open-system design

Closed-system design

8.

8.1

8.2

8.3

8.4

8.5

PAHT 2-6.3

PAHT 10-12.5

PAHT 20-32

PAHT 50-90

PAHT 256-308

9. Service

1. Introduction

•

•

•

The Danfoss range of PAHT and PAHT G highpressure pumps is specifically designed for use with technical water such as:

Ultra-pure water that has undergone multiple reverse osmosis processes

De-ionized water

Demineralized water

Danfoss PAHT pumps are positive displacement pumps, with axial pistons that move a fixed amount of water in each cycle. Flow is proportional to the number of input shaft revolutions

(rpm). Unlike centrifugal pumps, they produce the same flow at a given speed no matter what the discharge pressure.

The range of PAHT G pumps is based on the standard PAHT pump series. The PAHT G pumps are made with some extra coatings that reduce the wear of the pump. This coating is particularly important for pumps used in gas turbine applications or other similar applications where the wear of the pumps is high due to the ultra pure water quality.

The next pages will cover both PAHT and PAHT G pumps with the name PAHT pumps.

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

Table of Contents

Data sheet

PAHT / PAHT G 2-308 pumps

(521B1247)

1.

2.

3.

4.

4.1

4.2

4.3

4.4

5.

5.1

5.2

5.3

5.4

5.5

Introduction

Benefits

Application examples

Technical data

PAHT 2-12.5

PAHT 20-32

PAHT 50-90

PAHT 256-308

Flow

PAHT 2-6.3 flow curves at max pressure

PAHT 10-12.5 flow curves at max pressure

PAHT 20-32 flow curves at max pressure

PAHT 50-90 flow curves at max pressure

PAHT 256-308 flow curves at max pressure

6.

7.

7.1

7.2

7.3

7.4

Motor requirements

Installation

Filtration

Noise

Open-system design

Closed-system design

8.

8.1

8.2

8.3

8.4

8.5

PAHT 2-6.3

PAHT 10-12.5

PAHT 20-32

PAHT 50-90

PAHT 256-308

9. Service

1. Introduction

•

•

•

The Danfoss range of PAHT and PAHT G highpressure pumps is specifically designed for use with technical water such as:

Ultra-pure water that has undergone multiple reverse osmosis processes

De-ionized water

Demineralized water

Danfoss PAHT pumps are positive displacement pumps, with axial pistons that move a fixed amount of water in each cycle. Flow is proportional to the number of input shaft revolutions

(rpm). Unlike centrifugal pumps, they produce the same flow at a given speed no matter what the discharge pressure.

The range of PAHT G pumps is based on the standard PAHT pump series. The PAHT G pumps are made with some extra coatings that reduce the wear of the pump. This coating is particularly important for pumps used in gas turbine applications or other similar applications where the wear of the pumps is high due to the ultra pure water quality.

The next pages will cover both PAHT and PAHT G pumps with the name PAHT pumps.

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

Below sectional drawing is an example of a PAHT pump.

10

1: Shaft sealing

2: Mounting flange

3: Retainer ring

4: Piston/shoe

5: Valve plate

6: Swash plate

7: Cylinder barrel

2 1 9 5 4 7 8 11

8: Spring

9: Port plate

10: Connecting flange

11: Housing with bearing

3 6

2. Benefits

•

•

•

Zero risk of lubricant contamination:

- Oil lubricants are replaced with the pumped medium, water, so there is no contamination risk from the pump.

Low maintenance costs:

- Efficient design and all-stainless steel construction ensure exceptionally long life. When Danfoss specifications are met, service intervals of up to 8,000 hours can be expected. Service is easy, and can be carried out on site due to the simple design and few parts.

Low energy costs:

- The highly efficient axial piston design provides the lowest electricity consumption of any comparable pump on

• the market.

Easy installation:

The lightest and most compact design available.

- Pump can be installed horizontally or vertically.

- No pulsation dampeners necessary due to extremely low-pressure pulsation.

- tion engines.

- pressure and water supply from a tank.

•

- high mechanical efficiency.

Certified quality:

- ments, VDI 6022, HACCP.

-

ISO 9006, ISO 14001

ATEX available on PAHT G,

API available on request

3. Application examples

•

•

•

High-pressure cleaning with ultra-pure water, as used in the manufacturing of flat-panel displays and other electronic products.

High-pressure cleaning with ultra-pure water, as used in the manufacturing of parts for the automobile industry.

Adiabatic cooling systems to replace or supplement standard A/C systems in server rooms and factories.

•

•

•

Humidification in office buildings, electronic component manufacturing, dairies, greenhouses, etc.

Dust suppression and odor control systems, for example in paper, textile and wood production.

Reduction of NOx emissions in diesel engines.

2

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

Data sheet

4. Technical data

PAHT 2-308 and PAHT G 2-308 pumps

4.1 PAHT 2-12.5

Pump size

Code number PAHT

Code number PAHT G

Housing material

Geometric displacement

cm³/rpm in³/rpm

Pressure

Min. outlet pressure barg psig

Max. outlet pressure, continuous

Inlet pressure, continuous

Max. inlet pressure, peak barg psig barg psig barg psig

PAHT 2

180B0031

180B1003

AISI 304

2

0.12

30

435

100

1450

0-4

0-58

4

58

Speed

Min. speed, continuous rpm 1000

Max. speed, continuous rpm 3000

Typical flow - Flow curves available in item 5

1000 rpm at max. pressure l/min 0.9

l/min 1.9

1500 rpm at max. pressure

1200 rpm at max. pressure gpm 0.3

0.7

1800 rpm at max. pressure gpm

Typical motor size

1500 rpm at max. pressure kW hp 1800 rpm at max. pressure

Torque at max. outlet pressure

Nm lbf-ft

Media temperature

Ambient temperature

Sound pressure level*

Weight

°C

°F

°C

°F dB(A) kg lb

0.75

1.0

4.4

3.2

2-50

37-122

0-50

32-122

76

4.4

9.7

PAHT 3.2

180B0077

180B1004

AISI 304

3.2

0.20

30

435

100

1450

0-4

0-58

4

58

1000

3000

2.3

3.8

0.8

1.3

1.1

1.5

6.7

4.9

2-50

37-122

0-50

32-122

76

4.4

9.7

PAHT 4 PAHT 6.3

180B0030

180B1005

AISI 304

4

0.24

30

435

100

1450

0-4

0-58

4

58

1000

3000

3.1

5.1

1.0

1.7

1.5

2.0

8.1

6.0

2-50

37-122

0-50

32-122

76

4.4

9.7

180B0029

180B1006

AISI 304

6.3

0.38

30

435

100

1450

0-4

0-58

4

58

1000

3000

5.5

8.6

1.8

2.8

2.2

3.0

12.4

9.2

2-50

37-122

0-50

32-122

76

4.4

9.7

PAHT 10 PAHT 12.5

180B0032

180B1007

AISI 304

10

0.61

30

435

140

2031

0-4

0-58

4

58

1000

2400

8.0

12.8

2.6

4.1

4.0

7.5

25.6

18.9

2-50

37-122

0-50

32-122

75

7.7

17.0

180B0033

180B1008

AISI 304

12.5

0.76

30

435

140

2031

0-4

0-58

4

58

1000

2400

10.5

16.5

3.4

5.3

5.5

7.5

7.7

17.0

31.7

23.4

2-50

37-122

0-50

32-122

75

PA, 1m

] values are calculated.

Measured at max pressure and rpm for a motor pump unit.

Data sheet

4. Technical data

PAHT 2-308 and PAHT G 2-308 pumps

4.1 PAHT 2-12.5

Pump size

Code number PAHT

Code number PAHT G

Housing material

Geometric displacement

cm³/rpm in³/rpm

Pressure

Min. outlet pressure barg psig

Max. outlet pressure, continuous

Inlet pressure, continuous

Max. inlet pressure, peak barg psig barg psig barg psig

PAHT 2

180B0031

180B1003

AISI 304

2

0.12

30

435

100

1450

0-4

0-58

4

58

Speed

Min. speed, continuous rpm 1000

Max. speed, continuous rpm 3000

Typical flow - Flow curves available in item 5

1000 rpm at max. pressure l/min 0.9

l/min 1.9

1500 rpm at max. pressure

1200 rpm at max. pressure gpm 0.3

0.7

1800 rpm at max. pressure gpm

Typical motor size

1500 rpm at max. pressure kW hp 1800 rpm at max. pressure

Torque at max. outlet pressure

Nm lbf-ft

Media temperature

Ambient temperature

Sound pressure level*

Weight

°C

°F

°C

°F dB(A) kg lb

0.75

1.0

4.4

3.2

2-50

37-122

0-50

32-122

76

4.4

9.7

PAHT 3.2

180B0077

180B1004

AISI 304

3.2

0.20

30

435

100

1450

0-4

0-58

4

58

1000

3000

2.3

3.8

0.8

1.3

1.1

1.5

6.7

4.9

2-50

37-122

0-50

32-122

76

4.4

9.7

PAHT 4

180B0030

180B1005

AISI 304

4

0.24

30

435

100

1450

0-4

0-58

4

58

1000

3000

3.1

5.1

1.0

1.7

1.5

2.0

8.1

6.0

2-50

37-122

0-50

32-122

76

4.4

9.7

PAHT 6.3

180B0029

180B1006

AISI 304

6.3

0.38

30

435

100

1450

0-4

0-58

4

58

1000

3000

5.5

8.6

1.8

2.8

2.2

3.0

12.4

9.2

2-50

37-122

0-50

32-122

76

4.4

9.7

PAHT 10 PAHT 12.5

180B0032

180B1007

AISI 304

10

0.61

30

435

140

2031

0-4

0-58

4

58

1000

2400

8.0

12.8

2.6

4.1

4.0

7.5

25.6

18.9

2-50

37-122

0-50

32-122

75

7.7

17.0

180B0033

180B1008

AISI 304

12.5

0.76

30

435

140

2031

0-4

0-58

4

58

1000

2400

10.5

16.5

3.4

5.3

5.5

7.5

7.7

17.0

31.7

23.4

2-50

37-122

0-50

32-122

75

PA, 1m

] values are calculated.

Measured at max pressure and rpm for a motor pump unit.

4

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

4.2 PAHT 20-32

Pump size

Code number PAHT

Code number PAHT G

Housing material

Geometric displacement

cm³/rpm in³/rpm

PAHT 20 PAHT 25 PAHT 32

180B0019 180B0020 180B0021

180B1009 180B1010 180B1011

AISI 316 or higher

AISI 316 or higher

AISI 316 or higher

20

1.22

25

1.53

32

1.95

Pressure

Min. outlet pressure

Max. outlet pressure, continuous

Inlet pressure, continuous

Max. inlet pressure, peak barg psig barg psig barg psig barg psig

30

435

80

1160

3-6

43-87

15

218

Speed

Min. speed, continuous rpm 700

Max. speed, continuous rpm 2400

Typical flow - Flow curves available in item 5

l/min 17.7

1000 rpm at max pressure

1500 rpm at max pressure l/min 27.7

5.7

1200 rpm at max. pressure gpm

1800 rpm at max. pressure gpm

Typical motor size

kW 1500 rpm at max. pressure

1800 rpm at max. pressure hp

9.0

5.5

7.5

30

435

160

2321

3-6

43-87

15

218

700

2400

20.9

33.4

6.8

10.8

11.0

20.0

30

435

160

2321

3-6

43-87

15

218

700

2400

29.0

45.0

9.4

14.3

15.0

20.0

Torque at max. outlet pressure

Media temperature

Ambient temperature

Nm lbf-ft

°C

°F

°C

°F dB(A)

21.0

15.5

2-50

37-122

0-50

32-122

79

69.2

51.1

2-50

37-122

0-50

32-122

79

89.0

65.7

2-50

37-122

0-50

32-122

79

Sound pressure level*

Weight

kg lb

19

42

19

42

19

42

Measurements according to EN ISO 3744: 2010 / dB(A) [L

PA, 1m

Measured at max pressure and rpm for a motor pump unit.

] values are calculated.

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

4.3 PAHT 50-90

Pump size

Code number PAHT

Code number PAHT G

Housing material

Geometric displacement

cm³/rpm in³/rpm

PAHT 50 PAHT 63 PAHT 70 PAHT 80 PAHT 90

180B0085 180B0086 180B0087 180B0088 180B0089

180B1012 180B1013 180B1014 180B1015 180B1016

AISI 316 or higher

AISI 316 or higher

AISI 316 or higher

AISI 316 or higher

AISI 316 or higher

50

3.05

63

3.84

70

4.27

80

4.88

90

5.49

Pressure

Min. outlet pressure

Max. outlet pressure, continuous

Inlet pressure, continuous

Max. inlet pressure, peak barg psig barg psig barg psig barg psig

30

435

80

1160

3-6

43-87

15

218

Speed

Min. speed, continuous rpm 700

Max. speed, continuous rpm 1800

Typical flow - Flow curves available in item 5

l/min 43.7

1000 rpm at max. pressure

1500 rpm at max. pressure l/min 68.7

14.2

1200 rpm at max. pressure gpm

1800 rpm at max. pressure gpm

Typical motor size

kW 1500 rpm at max. pressure

1800 rpm at max. pressure hp

22.1

11

20

30

435

160

2321

3-6

43-87

15

218

700

1800

51.6

83.1

17.0

27.0

30

50

30

435

160

2321

3-6

43-87

15

218

700

1800

57.2

92.2

18.8

30.7

30

50

30

435

160

2321

3-6

43-87

15

218

700

1800

69.2

109.2

22.5

35.2

37

60

30

435

160

2321

3-6

43-87

15

218

700

1800

79.3

124.3

25.7

40.0

45

75

Torque at max. outlet pressure

Media temperature

Ambient temperature

Nm lbf-ft

°C

°F

°C

°F dB(A)

68.5

50.6

2-50

37-122

0-50

32-122

80

172.6

127.4

2-50

37-122

0-50

32-122

80

191.8

141.5

2-50

37-122

0-50

32-122

80

219.8

162.2

2-50

37-122

0-50

32-122

80

246.6

182.0

2-50

37-122

0-50

32-122

81

Sound pressure level*

Weight

kg lb

34

75

34

75

34

75

34

75

34

75

PA, 1m

] values are calculated.

Measured at max pressure and rpm for a motor pump unit.

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

4.3 PAHT 50-90

Pump size

Code number PAHT

Code number PAHT G

Housing material

Geometric displacement

cm³/rpm in³/rpm

PAHT 50 PAHT 63 PAHT 70 PAHT 80 PAHT 90

180B0085 180B0086 180B0087 180B0088 180B0089

180B1012 180B1013 180B1014 180B1015 180B1016

AISI 316 or higher

AISI 316 or higher

AISI 316 or higher

AISI 316 or higher

AISI 316 or higher

50

3.05

63

3.84

70

4.27

80

4.88

90

5.49

Pressure

Min. outlet pressure

Max. outlet pressure, continuous

Inlet pressure, continuous

Max. inlet pressure, peak barg psig barg psig barg psig barg psig

30

435

80

1160

3-6

43-87

15

218

Speed

Min. speed, continuous rpm 700

Max. speed, continuous rpm 1800

Typical flow - Flow curves available in item 5

l/min 43.7

1000 rpm at max. pressure

1500 rpm at max. pressure l/min 68.7

14.2

1200 rpm at max. pressure gpm

1800 rpm at max. pressure gpm

Typical motor size

kW 1500 rpm at max. pressure

1800 rpm at max. pressure hp

22.1

11

20

30

435

160

2321

3-6

43-87

15

218

700

1800

51.6

83.1

17.0

27.0

30

50

30

435

160

2321

3-6

43-87

15

218

700

1800

57.2

92.2

18.8

30.7

30

50

30

435

160

2321

3-6

43-87

15

218

700

1800

69.2

109.2

22.5

35.2

37

60

30

435

160

2321

3-6

43-87

15

218

700

1800

79.3

124.3

25.7

40.0

45

75

Torque at max. outlet pressure

Media temperature

Ambient temperature

Nm lbf-ft

°C

°F

°C

°F dB(A)

68.5

50.6

2-50

37-122

0-50

32-122

80

172.6

127.4

2-50

37-122

0-50

32-122

80

191.8

141.5

2-50

37-122

0-50

32-122

80

219.8

162.2

2-50

37-122

0-50

32-122

80

246.6

182.0

2-50

37-122

0-50

32-122

81

Sound pressure level*

Weight

kg lb

34

75

34

75

34

75

34

75

34

75

PA, 1m

] values are calculated.

Measured at max pressure and rpm for a motor pump unit.

6

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

4.4 PAHT 256-308

Pump size

Code number PAHT

Code number PAHT G

Housing material

Geometric displacement

cm³/rpm in³/rpm

PAHT 256 PAHT 308

180B1001 180B1002

180B6090 180B6091

AISI 316 or higher

AISI 316 or higher

256

15.6

308

18.8

Pressure

Min. outlet pressure

Max. outlet pressure, continuous

Inlet pressure, continuous

Max inlet pressure, peak barg psig barg psig barg psig barg psig

30

435

120

1740

3-6

43-87

15

218

Speed

Min. speed, continuous rpm 450

Max. speed, continuous rpm 1250

Typical flow - Flow curves available in item 5

l/min 78 450 rpm at max. pressure

1250 rpm at max. pressure l/min 282

20.6

450 rpm at max. pressure gpm

1250 rpm at max. pressure gpm

Typical motor size

kW 1000 rpm at max. pressure

1200 rpm at max. pressure hp

74.5

55

100

30

435

120

1740

3-6

43-87

15

218

450

1250

92

338

25.0

89.3

75

125

Torque at max. outlet pressure

Media temperature

Ambient temperature

Nm lbf-ft

°C

°F

°C

°F dB(A)

549.6

405.6

2-50

37-122

0-50

32-122

82

661.3

448.0

2-50

37-122

0-50

32-122

87

Sound pressure level*

Weight

kg lb

105

231

105

231

Measurements according to EN ISO 3744: 2010 / dB(A) [L

PA, 1m

Measured at max pressure and rpm for a motor pump unit.

] values are calculated.

Data sheet

5. Flow

3.5

3

3.0

2,5

2.5

2

2.0

1,5

1.5

1

1.0

0,5

0.5

0

0

0

5

5

4,5

4.5

4

4.0

3,5

14

12

12

10

10

8

8

6

8

6

4

6

4

2

4

2

0

0

2

0

PAHT 2-308 and PAHT G 2-308 pumps

The flow (Q eff

) at less than max. pressure (p max

) can be calculated with the following equation:

Q eff

= Q

(th)

– [(Q

(th)

– Q (p max

)) x (p / p max

)]

Q

Q (p p p:

V: n:

(th) max

: max

Theoretical flow (l/min)

): see 4.1-4.4

: Max pressure (bar)

Pressure (bar)

Displacement (ccm/rev.)

Motor speed (rpm)

The theoretical flow can be calculated with the following equation:

Q

(th)

=

V x n

1000

At zero pressure the true flow equals the theoretical flow Q

(th)

.

5.1 PAHT 2-6.3 flow curves at max pressure

Flow curve @ max pressure PAHT 2 - 6.3

Flow curve @ max pressure PAHT 2 - 6.3

PAHT 6.3

PAHT 4

PAHT 3.2

PAHT 2 rpm

rpm

Flow curve @ max pressure PAHT 2 - 6.3

Flow curve @ max pressure PAHT 2 - 6.3

PAHT 6.3

PAHT 4

PAHT 3.2

PAHT 2 rpm

Data sheet

5. Flow

8

3.5

3

3.0

2,5

2.5

2

2.0

1,5

1.5

1

1.0

0,5

0.5

0

0

0

5

5

4,5

4.5

4

4.0

3,5

14

12

12

10

10

8

8

6

8

6

4

6

4

2

4

2

0

0

2

0

PAHT 2-308 and PAHT G 2-308 pumps

The flow (Q eff

) at less than max. pressure (p max

) can be calculated with the following equation:

Q eff

= Q

(th)

– [(Q

(th)

– Q (p max

)) x (p / p max

)]

Q

(th)

Q (p

: max

Theoretical flow (l/min)

): see 4.1-4.4

p max p:

V: n:

: Max pressure (bar)

Pressure (bar)

Displacement (ccm/rev.)

Motor speed (rpm)

The theoretical flow can be calculated with the following equation:

Q

(th)

=

V x n

1000

At zero pressure the true flow equals the theoretical flow Q

(th)

.

5.1 PAHT 2-6.3 flow curves at max pressure

Flow curve @ max pressure PAHT 2 - 6.3

Flow curve @ max pressure PAHT 2 - 6.3

PAHT 6.3

PAHT 4

PAHT 3.2

PAHT 2 rpm

rpm

Flow curve @ max pressure PAHT 2 - 6.3

Flow curve @ max pressure PAHT 2 - 6.3

PAHT 6.3

PAHT 4

PAHT 3.2

PAHT 2 rpm

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

8

8

7

7

6

6

5

5

4

4

3

3

2

2

1

1

0

0

5.2 PAHT 10-12.5 flow curves at max pressure

Flow curve @ max pressure PAHT 10 - 12.5

Flow curve @ max pressure PAHT 10 - 12.5

12

12

8

8

4

4

0

0

20

20

16

16

32

32

28

28

24

24

rpm

RPM

Flow curve @ max pressure PAHT 10 - 12.5

Flow curve @ max pressure PAHT 10 - 12.5

rpm

PAHT 12.5

PAHT 10

PAHT 12.5

PAHT 10

Data sheet

20

18

16

14

12

10

8

8

6

4

2

2

0

0

PAHT 2-308 and PAHT G 2-308 pumps

5.3 PAHT 20-32 flow curves at max pressure

Flow curve @ max pressure PAHT 20 - 32

80

70

60

50

40

30

20

10

0

PAHT 32

PAHT 25

PAHT 20

PAHT 32

PAHT 25

PAHT 20 rpm

Data sheet

20

18

16

14

12

10

8

8

6

4

2

2

0

0

PAHT 2-308 and PAHT G 2-308 pumps

5.3 PAHT 20-32 flow curves at max pressure

Flow curve @ max pressure PAHT 20 - 32

80

70

60

50

40

30

20

10

0

PAHT 32

PAHT 25

PAHT 20

PAHT 32

PAHT 25

PAHT 20 rpm

Data sheet

45

35

35 35

30

30 30

25

25 25

20

20 20

20

15

15

15

10

10

10

10

5

5

5

0

0

0

PAHT 2-308 and PAHT G 2-308 pumps

5.4 PAHT 50-90 flow curves at max pressure

160

160

160

140

140

140

120

120

100

100

100

80

80 80

80

60

60 60

60

40

40

20

20

0

0

0

0

rpm

PAHT 90

PAHT 80

PAHT 70

PAHT 63

PAHT 50

PAHT 90

PAHT 80

PAHT 70

PAHT 63

PAHT 50

[L/min]

10

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

5.5 PAHT 256-308 flow curves at max pressure

400

350

300

250

200

150

100

50

0

45

0

50

0

55

0

60

0

65

0

70

0

75

0

80

0

rpm

85

0

90

0

95

0

10

00

105

0

11

00

11

50

12

00

12

50

PAHT 308

PAHT 256

60

50

40

30

100

90

80

70

20

10

0

45

0

50

0

55

0

60

0

65

0

70

0

75

0

80

0

rpm

85

0

90

0

95

0

10

00

105

0

11

00

11

50

12

00

12

50

PAHT 308

PAHT 256

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

5.5 PAHT 256-308 flow curves at max pressure

400

350

300

250

200

150

100

50

0

45

0

50

0

55

0

60

0

65

0

70

0

75

0

80

0

rpm

85

0

90

0

95

0

10

00

105

0

11

00

11

50

12

00

12

50

PAHT 308

PAHT 256

60

50

40

30

100

90

80

70

20

10

0

45

0

50

0

55

0

60

0

65

0

70

0

75

0

80

0

rpm

85

0

90

0

95

0

10

00

105

0

11

00

11

50

12

00

12

50

PAHT 308

PAHT 256

Data sheet

6. Motor requirements

PAHT 2-308 and PAHT G 2-308 pumps

The required motor power can be calculated by using the following equation:

P = n x V x p

600.000 x η

P: Power (kW)

M: Torque (Nm)

η: Mechanical efficiency p: Pressure (bar) n: Motor speed (rpm)

V: Displacement (ccm/rev.)

From the flow curves in item 5, you can determine the rpm of the pump at the desired flow.

The required torque is calculated as follows:

M =

V x p

62.8 x η

To determine the correct motor size, both the power and torque requirement must be verified.

The mechanical efficiency of the pump, at max pressure, is as follows:

PAHT 2, 3.2, 4, 6.3

PAHT 10, 12.5

PAHT 20, 25, 32, 50, 63, 70, 80, 90

PAHT 256, 308

0.8

0.9

0.95

0.95

12

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

Data sheet

7. Installation

PAHT 2-308 and PAHT G 2-308 pumps

See the figure below for instructions on how to mount the pump and connect it to an electric motor or combustion engine.

A B C D

A: Pump

B: Bell housing

C: Coupling

D: Motor

If alternative mounting is required, please contact your Danfoss sales representative for further information.

Note: Do not add any axial or radial loads to the pump shaft.

7.1 Filtration

Proper filtration is crucial for the performance, maintenance and warranty of your pump.

Protect your pump, and the application in which it is installed, by always ensuring that all filtration specifications are met, and by always changing filter cartridges according to schedule.

Since water has very low viscosity, Danfoss PAHT pumps have been designed with very narrow clearances in order to control internal leakage rates and improve component performance. To

minimize wear on the pump, it is therefore essential to filter inlet water properly.

The main filter must have a filtration efficiency of 99.98% at 10 μm. We strongly recommend that you always use precision depth filter cartridges rated 10 μm abs. β

10

≥ 5000.

Please note that we do not recommend bag

filters or string-wound filter cartridges, which typically have only 50% filtration efficiency. This means that out of 100,000 particles that enter such filters, 50,000 particles pass right through them; compare this to precision depth filters that are 99.98% efficient, and only allow 20 of the same 100,000 particles to pass through.

For more information on the importance of proper filtration, including explanation of filtration principles, definitions, and guidance on how to select the right filter for your pump, please consult our Filtration information and specifications (Danfoss document number

521B1009).

7.2 Noise

Since the pump unit is mounted on a frame, the overall noise level can only be determined for a complete system. To minimize vibrations and noise throughout the system, it is therefore very important to mount the pump unit correctly on a frame with dampers and to use flexible hoses rather than metal pipes where possible.

The noise level is influenced by:

•

Pump speed:

High rpm makes more fluid/structure-

•

borne pulsations/vibrations than low rpm.

Discharge pressure:

High pressure makes more noise than low pressure.

•

•

•

Pump mounting:

Rigid mounting makes more noise than flexible mounting because of structureborne vibrations. Be sure to use dampers when mounting.

Connections to pump:

Pipes connected directly to the pump make more noise than flexible hoses because of structure-borne vibrations.

Variable frequency drives (VFDs):

Motors regulated by VFDs can produce more noise if the VFD does not have the right settings.

Data sheet

7. Installation

14

PAHT 2-308 and PAHT G 2-308 pumps

See the figure below for instructions on how to mount the pump and connect it to an electric motor or combustion engine.

Data sheet

A B C D

A: Pump

B: Bell housing

C: Coupling

D: Motor

If alternative mounting is required, please contact your Danfoss sales representative for further information.

Note: Do not add any axial or radial loads to the pump shaft.

7.1 Filtration

Proper filtration is crucial for the performance, maintenance and warranty of your pump.

Protect your pump, and the application in which it is installed, by always ensuring that all filtration specifications are met, and by always changing filter cartridges according to schedule.

Since water has very low viscosity, Danfoss PAHT pumps have been designed with very narrow clearances in order to control internal leakage rates and improve component performance. To

minimize wear on the pump, it is therefore essential to filter inlet water properly.

The main filter must have a filtration efficiency of 99.98% at 10 μm. We strongly recommend that you always use precision depth filter cartridges rated 10 μm abs. β

10

≥ 5000.

Please note that we do not recommend bag

filters or string-wound filter cartridges, which typically have only 50% filtration efficiency. This means that out of 100,000 particles that enter such filters, 50,000 particles pass right through them; compare this to precision depth filters that are 99.98% efficient, and only allow 20 of the same 100,000 particles to pass through.

For more information on the importance of proper filtration, including explanation of filtration principles, definitions, and guidance on how to select the right filter for your pump, please consult our Filtration information and specifications (Danfoss document number

521B1009).

7.2 Noise

Since the pump unit is mounted on a frame, the overall noise level can only be determined for a complete system. To minimize vibrations and noise throughout the system, it is therefore very important to mount the pump unit correctly on a frame with dampers and to use flexible hoses rather than metal pipes where possible.

The noise level is influenced by:

•

Pump speed:

High rpm makes more fluid/structure-

•

borne pulsations/vibrations than low rpm.

Discharge pressure:

High pressure makes more noise than low pressure.

•

•

•

Pump mounting:

Rigid mounting makes more noise than flexible mounting because of structureborne vibrations. Be sure to use dampers when mounting.

Connections to pump:

Pipes connected directly to the pump make more noise than flexible hoses because of structure-borne vibrations.

Variable frequency drives (VFDs):

Motors regulated by VFDs can produce more noise if the VFD does not have the right settings.

Reservoir

2

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

4

PI

6

5

6

PI

7

PAHT 2-308 and PAHT G 2-308 pumps

7.3 Open-system design

Inlet line:

Dimension the inlet line to obtain minimum pressure loss (large flow, minimum pipe length, minimum number of bends/ connections, and fittings with small pressure losses).

Inlet filter:

Install the inlet filter (1) in front of the PAHT pump (2). Please consult the Danfoss filter data sheet for guidance on how to select the right filter.

C

Monitoring pressure switch:

Install the monitoring pressure switch (3) between the filter and the pump inlet. Set the minimum inlet pressure according to specifications described in item 4, technical data. The monitoring pressure switch stops the pump if inlet pressure is lower than the set minimum pressure.

D

Monitoring temperature switch:

Install the monitoring temperature switch

(4) between the filter and the pump, on either side of the monitoring pressure switch. Set the temperature value according to technical data, item 4. The monitoring temperature switch stops the pump if inlet temperature is higher than the set value.

Hoses:

Always use flexible hoses (5) to minimize

F

vibrations and noise.

Inlet pressure:

In order to eliminate the risk of cavitation and other pump damage, pump inlet pressure must be maintained according to specifications described in item 4, technical data.

G

Non-return valve (6):

Should be installed after the outlet to prevent pump backspin, which may ruin the pump.

H

Pressure relief valve:

As the Danfoss PAHT pump begins to create pressure and flow immediately after start-up regardless of any counter pressure, a pressure relief valve (7) should be installed to prevent system damage.

Note: If a non-return valve is mounted in the inlet line, a low-pressure relief valve is also required between the non-return valve and the pump to protect against high-pressure peaks.

4

2

1

PI

PI

System

5

6

3

5

7

System

1

9

10

8

3

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

Closed-system design (not applicable for PAHT/PAHT G 256-308)

Inlet line:

Dimension the inlet line to obtain minimum pressure loss (large flow, minimum pipe length, minimum number of bends/ connections, and fittings with small pressure losses).

Inlet filter:

Install the inlet filter (1) in front of the tank

(2). Please consult the Danfoss filter data sheet for guidance on how to select the right filter.

C

Monitoring pressure switch:

Install the monitoring pressure switch (3) in front of the filter (1). Set the maximum inlet pressure to 2 bar (29.0 psi). The monitoring pressure switch will stop the pump (5) if inlet pressure is higher than 2 bar (29.0 psi), indicating that the filter element must be changed.

Monitoring temperature switch:

Install the monitoring temperature switch

(4) in the tank. Set the temperature value according to technical data, item 4. The monitoring temperature stops the pump if inlet temperature is higher than the set value.

Hoses:

Always use flexible hoses (6) to minimize vibrations and noise.

F

Inlet pressure:

In order to eliminate the risk of cavitation and other pump damage, pump inlet pressure must be maintained according to specifications described in item 4, technical data.

Non-return valve (7):

Should be installed after the outlet to prevent pump backspin, which may ruin the pump.

1

Pressure relief valve:

As the Danfoss PAHT pump begins to create pressure and flow immediately after start-up regardless of any counter pressure, a pressure relief valve (8) should be installed to prevent system damage.

System water filling:

To ensure proper filtration of new water

(10) supplied to the system, always use the filling valve (9).

J Minimum level switch:

Install the minimum level switch (11) above the outlet of the reservoir. The level switch must stop the pump if the water in the reservoir is below the switch, which indicates that the reservoir is empty.

PI

3

4

2

11 4

Reservoir

6

5

6 7

PI PI

5

2

5

PI

7

6

System

System

1

9

10

3

8

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

Closed-system design (not applicable for PAHT/PAHT G 256-308)

Inlet line:

Dimension the inlet line to obtain minimum pressure loss (large flow, minimum pipe length, minimum number of bends/ connections, and fittings with small pressure losses).

Inlet filter:

Install the inlet filter (1) in front of the tank

(2). Please consult the Danfoss filter data sheet for guidance on how to select the right filter.

C

Monitoring pressure switch:

Install the monitoring pressure switch (3) in front of the filter (1). Set the maximum inlet pressure to 2 bar (29.0 psi). The monitoring pressure switch will stop the pump (5) if inlet pressure is higher than 2 bar (29.0 psi), indicating that the filter element must be changed.

Monitoring temperature switch:

Install the monitoring temperature switch

(4) in the tank. Set the temperature value according to technical data, item 4. The monitoring temperature stops the pump if inlet temperature is higher than the set value.

Hoses:

Always use flexible hoses (6) to minimize vibrations and noise.

F

Inlet pressure:

In order to eliminate the risk of cavitation and other pump damage, pump inlet pressure must be maintained according to specifications described in item 4, technical data.

Non-return valve (7):

Should be installed after the outlet to prevent pump backspin, which may ruin the pump.

1

Pressure relief valve:

As the Danfoss PAHT pump begins to create pressure and flow immediately after start-up regardless of any counter pressure, a pressure relief valve (8) should be installed to prevent system damage.

System water filling:

To ensure proper filtration of new water

(10) supplied to the system, always use the filling valve (9).

J Minimum level switch:

Install the minimum level switch (11) above the outlet of the reservoir. The level switch must stop the pump if the water in the reservoir is below the switch, which indicates that the reservoir is empty.

PI

3

4

2

11 4

Reservoir

6

5

6 7

PI PI

5

2

5

PI

Data sheet

Dimensions and connections

7

6

System

System

1

9

10

3

8

PAHT 2-308 and PAHT G 2-308 pumps

8.1 PAHT 2-6.3

Bleeding port

Description

Parallel key,

DIN 6885

Bleeding

Inlet port

Outlet port

Mounting flange

PAHT 2-6.3

mm 5 × 5 × 20

in

0.20 × 0.20 × 0.79

M6; hex key 4 mm

G ½” BSPP; depth 15 mm

G ¼” BSPP; depth 11 mm

ISO 3019-2 63A2HW

Outlet

Inlet

Bleeding port

16

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

8.2 PAHT 10-12.5

Outlet

Bleeding port

Inlet

Description

Parallel key,

DIN 6885

Bleeding

Inlet port

Outlet port

Mounting flange

PAHT 10-12.5

mm 5 × 5 × 20

in

0.20 × 0.20 × 0.79

G ¼” BSPP; hex key 6 mm

G ¾” BSPP; depth 17 mm

G

⅜”

BSPP

; depth 15 mm

ISO 3019-2 63A2HW

Bleeding port

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

8.2 PAHT 10-12.5

Outlet

Bleeding port

Inlet

18

Description

Parallel key,

DIN 6885

Bleeding

Inlet port

Outlet port

Mounting flange

PAHT 10-12.5

mm 5 × 5 × 20

in

0.20 × 0.20 × 0.79

G ¼” BSPP; hex key 6 mm

G ¾” BSPP; depth 17 mm

G

⅜”

BSPP

; depth 15 mm

ISO 3019-2 63A2HW

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

Bleeding port

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

8.3 PAHT 20-32

Outlet

Bleeding port

Gauge port inlet

Inlet

Description

Parallel key,

DIN 6885

Bleeding

Inlet port

Outlet port

Gauge ports

Mounting flange

PAHT 20-32

mm 8 × 7 × 32

in

0.31 × 0.28 × 1.26

M6; hex key 5 mm

G 1” BSPP; depth 16 mm

G ¾

”

BSPP

; depth 18 mm

G ¼” BSPP; depth 15 mm

ISO 3019-2 100A2HW

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

8.4 PAHT 50-90

Outlet

Bleeding port

Gauge port outlet

Gauge port inlet

Inlet

Description

Parallel key,

DIN 6885

Bleeding

Inlet port

Outlet port

Gauge ports

Mounting flange

PAHT 50-90

mm 10 × 8 × 45

in

0.39 × 0.31 × 1.77

M6; hex key 5 mm

G 1½” BSPP; depth 24 mm

G 1” BSPP; depth 24 mm

G ¼” BSPP; depth 15 mm

ISO 3019-2 125A2HW

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

8.4 PAHT 50-90

Outlet

Bleeding port

Gauge port outlet

Gauge port inlet

Inlet

Data sheet PAHT 2-308 and PAHT G 2-308 pumps

8.5 PAHT 256-308

Bleeding port

20

Description

Parallel key,

DIN 6885

Bleeding

Inlet port

Outlet port

Gauge ports

Mounting flange

PAHT 50-90

mm 10 × 8 × 45

in

0.39 × 0.31 × 1.77

M6; hex key 5 mm

G 1½” BSPP; depth 24 mm

G 1” BSPP; depth 24 mm

G ¼” BSPP; depth 15 mm

ISO 3019-2 125A2HW

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

Description

Parallel key,

DIN 6885

Bleeding

Inlet port

Outlet port

Mounting flange

PAHT 256-308

mm 12 × 8 × 70

in

0.47 × 0.31 × 2.76

M6; hex key 5 mm

M60 x 1.5; depth 24 mm

M60 x 1.5; depth 24 mm

ISO 3019-2 180B4TW

Data sheet

9. Service

PAHT 2-308 and PAHT G 2-308 pumps

Danfoss PAHT pumps are designed for long periods of service-free operation to provide customers with low maintenance and life cycle costs. Provided that the pump is installed and operated according to Danfoss specifications,

Danfoss PAHT pumps typically run 8,000 hours between service routines. However, the service schedule for your Danfoss PAHT pump may vary according to the application and other factors.

The life of a pump may be greatly shortened if

Danfoss recommendations concerning system design and operation are not followed.

In our experience, poor filtration is the number one cause of pump damage.

•

•

•

•

Other factors that affect pump performance and lifetime include:

running the pump at speeds outside specifications

supplying the pump with water at temperatures higher than recommended

running the pump at inlet pressures outside specifications

running the pump at outlet pressures outside the specifications.

We recommend that you inspect your pump after 8,000 hours of operation even if it is running without any noticeable problems.

Replace any worn parts as necessary, including pistons and shaft seals, to keep your pump running efficiently and to prevent breakdown. If worn parts are not replaced, then our guidelines recommend more frequent inspection.

Danfoss A/S

High Pressure Pumps

DK-6430 Nordborg

Denmark

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.

This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Data sheet

9. Service

PAHT 2-308 and PAHT G 2-308 pumps

Danfoss PAHT pumps are designed for long periods of service-free operation to provide customers with low maintenance and life cycle costs. Provided that the pump is installed and operated according to Danfoss specifications,

Danfoss PAHT pumps typically run 8,000 hours between service routines. However, the service schedule for your Danfoss PAHT pump may vary according to the application and other factors.

The life of a pump may be greatly shortened if

Danfoss recommendations concerning system design and operation are not followed.

In our experience, poor filtration is the number one cause of pump damage.

•

•

•

•

Other factors that affect pump performance and lifetime include:

running the pump at speeds outside specifications

supplying the pump with water at temperatures higher than recommended

running the pump at inlet pressures outside specifications

running the pump at outlet pressures outside the specifications.

We recommend that you inspect your pump after 8,000 hours of operation even if it is running without any noticeable problems.

Replace any worn parts as necessary, including pistons and shaft seals, to keep your pump running efficiently and to prevent breakdown. If worn parts are not replaced, then our guidelines recommend more frequent inspection.

MAKING MODERN LIVING POSSIBLE

2. Pump instruction

PAHT/PAHT G 256-308

Instruction

Pump instruction

PAHT 256-308 and

PAHT G 256-308

Danfoss A/S

High Pressure Pumps

DK-6430 Nordborg

Denmark

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.

This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

22

521B1247 / DKCFN.PD.012.M1.02 / 05.2013

danfoss.high-pressurepumps.com

Instruction

Table of Contents

Pump instruction

PAHT/PAHT G 256-308

(180R9257)

Pump instruction PAHT 256-308 and PAHT G 256-308

1. Identification

2.

2.1

2.2

2.3

2.4

System design

Preferred system design and P&ID

Reversible pumps

General comments on

4.

5.

5.1

5.2

5.3

5.4

5.5

6.

6.1

3.

3.1

3.2

3.3

3.4

3.5

Mounting

Direction of rotation

Orientation

Protection from too high pressures

Connections

Initial start-up

Operation

Temperature

Pressure

Dry running

Disconnection

Storage

Service and warranty

Repair

1. Identification

This instruction includes both PAHT and PAHT G pumps.

The following items will cover both pumps by the name PAHT.

NESSIE®

MADE IN DENMARK

PUMP

Type PAHT

Serial no.

Code no.

Instruction

Table of Contents

Pump instruction

PAHT/PAHT G 256-308

(180R9257)

Pump instruction PAHT 256-308 and PAHT G 256-308

1. Identification

2.

2.1

2.2

2.3

2.4

System design

Preferred system design and P&ID

Reversible pumps

General comments on

4.

5.

5.1

5.2

5.3

5.4

5.5

6.

6.1

3.

3.1

3.2

3.3

3.4

3.5

Mounting

Direction of rotation

Orientation

Protection from too high pressures

Connections

Initial start-up

Operation

Temperature

Pressure

Dry running

Disconnection

Storage

Service and warranty

Repair

1. Identification

This instruction includes both PAHT and PAHT G pumps.

The following items will cover both pumps by the name PAHT.

NESSIE®

MADE IN DENMARK

PUMP

Type PAHT

Serial no.

Code no.

Instruction

2. System design

Pump instruction PAHT 256-308 and PAHT G 256-308

The design of the system must ensure that self-emptying of the pump during standstill is avoided.

The inlet pressure of the pump must never exceed the outlet pressure. This may typically occur in boosted or open-ended systems with direct water supply.

Open-ended systems with direct water supply

The pump is supplied with water direct from a feed pump.

The inlet pressure for PAHT 256/308 must be at least 3 barg (43 psig) and it must not exceed

6 barg (87 psig) continuously.

If it is unknown what the peak inlet pressure can be, then there should be a 10 barg (145 psig) safety valve on the inlet side of the pump.

pump inlet. The monitoring switch must stop the pump at pressures lower than minimum pressure.

Place a monitoring temperature switch (6) set at 50°C between filter and pump. The monitoring switch must stop the pump at temperatures higher than set value.

Use flexible hoses (7) to minimize vibrations and noise.

In order to eliminate the risk of damage and cavitation, a positive pressure at the inlet is always to be maintained at min. inlet pressure and max. inlet pressure.

A non-return valve (8) after the outlet can be installed in order to avoid backspin of the pump.

PI

Optrional

2.2 Preferred system design and P&ID

1. mum pressure loss (large flow, minimum pipe length, minimum number of bends/ connections, and fittings with small pressure losses).

Place an inlet filter (3) in front of the PAHT pump (4). Please consult Danfoss filter datasheet for guidance on how to select the right filter. Thoroughly clean pipes and flush system prior to start-up.

Place a monitoring pressure switch (5) set at min. inlet pressure between filter and

A pressure relief valve (9) can be installed in order to avoid system damage as the

Danfoss PAHT pump creates pressure and flow immediately after start-up, regardless of any counter pressure.

Note: If a non-return valve is mounted in the inlet line, a low pressure relief valve is also required between non return valve and pump as protection against high pressure peaks.

2

180R9257 / DKCFN.PI.012.A1.02 / 521B1232 / 05.2013

Instruction

Building up the pump unit

Pump instruction PAHT 256-308 and PAHT G 256-308

2.3 Reversible pumps

If exposed to high pressure in the outlet while the electric motor is not energized, the pumps will start spinning backwards. This will not harm the pumps as long as the pressure in the inlet does not exceed the max. pressure peak of

10 barg (145 psig).

If a non-return valve is mounted in the inlet line, a low-pressure relief valve is also required as protection against high-pressure pulses and high pressure in general.

Alternatively a high-pressure check valve can be mounted in the pump discharge line to prevent the pump from reversing.

The dotted setup ensures that the inlet pressure does not exceed 10 barg (145 psig), when a non-return valve is mounted in the inlet.

In order to avoid the risk of cavitation, the inlet pressure at the pump must be min. 3 barg

(43 psig).

The inlet line connection must be properly tightened, as possible entrance of air will cause cavitation.

2.4 General comments on

Filtration

A good filtration is vital to ensure a long and trouble free life of the pump.

As water has very low viscosity, the PAHT pumps have been designed with very narrow clearance in order to control internal leakage rates and improve component performance. Therefore it is important that the inlet water is filtered properly to minimize the wear of the pump.

The main filter must have a filtration efficiency of

99.98% at 10 µm. We recommend to use precision depth filter cartridges rated 10 µm abs.

β10 ≥ 5000 (equivalent to a filtration efficiency of

99.98%). Bag filters and string wound filter cartridges typically have only 50% filtration efficiency. This means that for each 100,000 particles reaching the filter, 50,000 particles pass through it compared to only 20 particles in a filter with an efficiency of 99.98%.

For more information on the importance of proper filtration, please consult our publication

“Filtration” (code number 521B1009), which also will provide you with an explanation of filtration definitions and a guidance on how to select the right filter.

Monitoring

It is recommended to continuously monitor the following conditions:

•

• filter clogging

pressure (inlet- and outlet side of the pump)

3.1 Mounting

A: Elastic coupling

B: Bell housing

C: Motor shaft

D: Pump flange

Instruction

Building up the pump unit

Pump instruction PAHT 256-308 and PAHT G 256-308

2.3 Reversible pumps

If exposed to high pressure in the outlet while the electric motor is not energized, the pumps will start spinning backwards. This will not harm the pumps as long as the pressure in the inlet does not exceed the max. pressure peak of

10 barg (145 psig).

If a non-return valve is mounted in the inlet line, a low-pressure relief valve is also required as protection against high-pressure pulses and high pressure in general.

Alternatively a high-pressure check valve can be mounted in the pump discharge line to prevent the pump from reversing.

The dotted setup ensures that the inlet pressure does not exceed 10 barg (145 psig), when a non-return valve is mounted in the inlet.

In order to avoid the risk of cavitation, the inlet pressure at the pump must be min. 3 barg

(43 psig).

The inlet line connection must be properly tightened, as possible entrance of air will cause cavitation.

2.4 General comments on

Filtration

A good filtration is vital to ensure a long and trouble free life of the pump.

As water has very low viscosity, the PAHT pumps have been designed with very narrow clearance in order to control internal leakage rates and improve component performance. Therefore it is important that the inlet water is filtered properly to minimize the wear of the pump.

The main filter must have a filtration efficiency of

99.98% at 10 µm. We recommend to use precision depth filter cartridges rated 10 µm abs.

β10 ≥ 5000 (equivalent to a filtration efficiency of

99.98%). Bag filters and string wound filter cartridges typically have only 50% filtration efficiency. This means that for each 100,000 particles reaching the filter, 50,000 particles pass through it compared to only 20 particles in a filter with an efficiency of 99.98%.

For more information on the importance of proper filtration, please consult our publication

“Filtration” (code number 521B1009), which also will provide you with an explanation of filtration definitions and a guidance on how to select the right filter.

Monitoring

It is recommended to continuously monitor the following conditions:

•

• filter clogging

pressure (inlet- and outlet side of the pump)

3.1 Mounting

A: Elastic coupling

B: Bell housing

C: Motor shaft

D: Pump flange

Instruction Pump instruction PAHT 256-308 and PAHT G 256-308

C

B

A

Mount the coupling flush or maximum

1mm offset from the pump shaft end.

Ensure an air gap between coupling and pump flange of min. 4 mm (0.16 in).

Mount the bell housing on pump. Secure nuts with the right torque.

Measure the longest distance “A” from top of bell housing to the button of coupling claw.

Mount the coupling on motor shaft. Ensure the coupling and motor flange are not in contact with each other.

Measure from motor flange to the top of the coupling. That measurement “B” shall be 3-5 mm (0.12 - 0.2 inch) shorter than the measurement “A”.

Adjust respectively, verify the measurement, and secure both couplings with the right torques on the locking screws (see coupling operation & mounting instruction).

Mount the elastic gear ring and mount the bell housing/pump on the motor. After mounting it must be possible to move the elastic gear ring 3-5mm (0.12 - 0.2 in) axial

“C”. The check can be done through the inspection hole of bell housing. Secure flange bolts with the right torque.

If alternative mounting is desired, please contact the Danfoss Sales Organization.

Choose proper tolerances to ensure an easy mounting of the elastic coupling without use of tools.

Please take care to observe the recommended length tolerances of the chosen coupling, as an axial force on the pump will damage the pump.

3.2 Direction of rotation

Is indicated by means of an arrow on the pump label.

NESSIE®

MADE IN DENMARK

PUMP

Type PAHT

Serial no.

Code no.

3.3 Orientation

The pump can be mounted/orientated in any horizontal direction with the inlet and the outlet pointing upwards, downwards or to either side.

4

180R9257 / DKCFN.PI.012.A1.02 / 521B1232 / 05.2013

Instruction Pump instruction PAHT 256-308 and PAHT G 256-308

3.4 Protection from too high pressures

The pump should be protected against too high pressure by means of a safety valve or a pressure relief valve.

The valve should be placed as close to the pump as possible.

The opening characteristics of the valve must not result in peak pressures higher than 100 barg

(1450 psig).

Both the inlet and outlet lines must be flexible soft hoses.

The valve outlet must not be connected directly to the pump suction line. It must be connected directly to the drain.

3.5 Connections

I: Inlet

O: Outlet

C: Bleeding

D: Parallel key

C

C

I

O

D

4. Initial start-up

5. Operation

Flush inlet line before connecting the pump, to remove possible impurities from pipes, hoses etc.

2. Loosen top bleeding plug “C” (see item 3.5) using an allen key (only plugs with internal hexagan sockets). Retighten the plug, when water appears from the bleeding plug.

Make sure that the direction of rotation of the electric motor corresponds to the direction of rotation of the pump (see label on pump).

4. Now the pump is ready for start-up.

WARNING:

Make sure that the direction of rotation of the electric motor corresponds to the direction of rotation of the pump (see label on pump).

Otherwise the pump will be damaged if a check valve is placed between pump and feed pump.

5.1 Temperature

Fluid temperature:

Min. +2°C to max. +50°C

(Min. +35.6°F to max. +122°F)

Ambient temperature:

Min. +2°C to max. +50°C

(Min. +35.6°F to max. +122°F)

Storage temperature:

Min. -40°C to max. +70°C

(Min. -40°F to max. +158°F)

In case of lower operating temperatures, please contact the Danfoss Sales Organization.

NB: The pump unit should include a pressure gauge on the high pressure side.

5.3 Dry running

When running, the pump must always be connected to the water supply in order to avoid damage if it should run dry.

5.4 Disconnection

If the inlet line is disconnected from the water supply, the pump will be emptied of water through the disconnected inlet line. When starting up again, follow the bleeding procedure described under section 4, Initial start up.

5.2 Pressure

The inlet pressure for PAHT 256/308 must be min.

3 barg (43 psig) and max. 6 barg (87 psig). At lower pressures the pump will cavitate, resulting in damage of the pump.

Max. inlet pressure peak (e.g. in case the pump stops momentarily) up to 10 barg (145 psig) are acceptable. Max. pressure on the pump’s outlet line should be limited at 120 barg (1740 psig) continuously.

5.5 Storage

When preparing the pump for long-term storage or for temperatures below the freezing point, flush the pump with an anti-freeze medium type monopropylene glycol to prevent internal corrosion or frost in the pump.

For further information on anti-freeze media, please contact the Danfoss Sales Organization.

Instruction Pump instruction PAHT 256-308 and PAHT G 256-308

3.4 Protection from too high pressures

The pump should be protected against too high pressure by means of a safety valve or a pressure relief valve.

The valve should be placed as close to the pump as possible.

The opening characteristics of the valve must not result in peak pressures higher than 100 barg

(1450 psig).

Both the inlet and outlet lines must be flexible soft hoses.

The valve outlet must not be connected directly to the pump suction line. It must be connected directly to the drain.

3.5 Connections

I: Inlet

O: Outlet

C: Bleeding

D: Parallel key

C

C

I

O

D

4. Initial start-up

5.

6

Operation

Flush inlet line before connecting the pump, to remove possible impurities from pipes, hoses etc.

2. Loosen top bleeding plug “C” (see item 3.5) using an allen key (only plugs with internal hexagan sockets). Retighten the plug, when water appears from the bleeding plug.

Make sure that the direction of rotation of the electric motor corresponds to the direction of rotation of the pump (see label on pump).

4. Now the pump is ready for start-up.

WARNING:

Make sure that the direction of rotation of the electric motor corresponds to the direction of rotation of the pump (see label on pump).

Otherwise the pump will be damaged if a check valve is placed between pump and feed pump.

5.1 Temperature

Fluid temperature:

Min. +2°C to max. +50°C

(Min. +35.6°F to max. +122°F)

Ambient temperature:

Min. +2°C to max. +50°C

(Min. +35.6°F to max. +122°F)

Storage temperature:

Min. -40°C to max. +70°C

(Min. -40°F to max. +158°F)

In case of lower operating temperatures, please contact the Danfoss Sales Organization.

NB: The pump unit should include a pressure gauge on the high pressure side.

5.3 Dry running

When running, the pump must always be connected to the water supply in order to avoid damage if it should run dry.

5.4 Disconnection

If the inlet line is disconnected from the water supply, the pump will be emptied of water through the disconnected inlet line. When starting up again, follow the bleeding procedure described under section 4, Initial start up.

5.2 Pressure

The inlet pressure for PAHT 256/308 must be min.

3 barg (43 psig) and max. 6 barg (87 psig). At lower pressures the pump will cavitate, resulting in damage of the pump.

Max. inlet pressure peak (e.g. in case the pump stops momentarily) up to 10 barg (145 psig) are acceptable. Max. pressure on the pump’s outlet line should be limited at 120 barg (1740 psig) continuously.

5.5 Storage

When preparing the pump for long-term storage or for temperatures below the freezing point, flush the pump with an anti-freeze medium type monopropylene glycol to prevent internal corrosion or frost in the pump.

For further information on anti-freeze media, please contact the Danfoss Sales Organization.

180R9257 / DKCFN.PI.012.A1.02 / 521B1232 / 05.2013

Instruction Pump instruction PAHT 256-308 and PAHT G 256-308

Recommended procedure:

1. Disconnect the water supply to the pump.

Through the lower bleeding plug, empty the pump housing of water and close it again.

Connect the pump to a tank containing anti-freeze additive. Connect a hose to the inlet port of the pump and via another hose return the flow from the outlet port port to the tank with anti-freeze additives.

Quickly start and stop the pump. Make sure that the pump does not run dry. The pump is now protected against internal corrosion and frost.

6. Service

The Danfoss PAHT/PAHT G pumps are designed for long periods of service-free operation to provide customers with low maintenance and life cycle costs. Provided that the pumps are installed and operated according to Danfoss specifications, the Danfoss PAHT/PAHT G pumps typically run 8,000 hours between service routines. However, the service schedule for your

PAHT/PAHT G pump may vary according to the application and other factors.

The life of a pump may be greatly shortened if

Danfoss recommendations concerning system design and operation are not followed.

In our experience, poor filtration is the number one cause of pump damage.

•

•

•

•

Other factors that affect pump performance and lifetime include:

running the pump at speeds outside specifications

supplying the pump with water at temperatures higher than recommended

running the pump at inlet pressures outside specifications

running the pump at outlet pressures outside the specifications.

Recommended service intervals

7.1 General information

This guideline provides information on the recommended service intervals for the PAHT/

PAHT G pumps. The recommendation is based upon good engineering practice and on experience gained from operation even under extreme conditions.

The recommendation is for guidance only.

7.2 Inspection of pump parts

Danfoss recommends to inspect the pumps after

8,000 hours. Typical signs of wear are seen on the contact/sliding surfaces in the pumps. If the pumps must run for additional 8,000 hours, the following parts will have to be inspected:

•

•

•

•

•

Pistons

Retainer plate, ball and bearing

Valve plate

Port plate

Sealings

If there are any wear marks on the parts they need to be replaced.

•

•

If service inspection due to the application is complicated, the plant operator can decide to extend the service interval by evaluating the following deviations:

•

Sound - does the pump have any unusual sounds?

Electric motor power consumption and speed compared with measurement made in the past.

Pressure/flow according to measurements made in the past?

We advise that the above mentioned parameter during the extended service interval is inspected for every 500-2,000 hours beyond the 8,000 hours. The pump must in any case be inspected after maximum 16,000 hours or 2 years.

7.3 How to inspect the pump

Service manuals are available on the internet www.danfoss.high-pressurepumps.com

Instruction Pump instruction PAHT 256-308 and PAHT G 256-308

Danfoss A/S

High Pressure Pumps

DK-6430 Nordborg

Denmark

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.

This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Instruction Pump instruction PAHT 256-308 and PAHT G 256-308

Danfoss A/S

High Pressure Pumps

DK-6430 Nordborg

Denmark

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.

This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

8

180R9257 / DKCFN.PI.012.A1.02 / 521B1232 / 05.2013

3. Electric motor manual

(180R9230)

Electric Motors

Motor Manual

hoyermotors.com

Manual

180R9289 / IOM PAHT/PAHT G 256-308 pumps - v01 / 05.2013

180R9230

49

This manual concerns the following types of standard induction motors from Hoyer:

HMA2, HMC2, HMD, HMT, MS, Y2E1, Y2E2, YDT

These motors are manufactured in accordance with IEC/EN

60034-4 and IEC/EN 60072.

Motors are rated for the ambient temperature range -20°C to +40°C and site altitudes

≤1000 m above sea level.

Low-voltage motors are components for installation in machinery. They are CE marked according to the Low

Voltage Directive 2006/95/EC

Correct alignment is essential to avoid bearing, vibration and shaft failure.

Use appropriate methods for alignment.

Re-check the alignment after the final tightening of the outdoors and not running 24 hours / day, so that the motor machinery. They are CE marked according to the Low

Voltage Directive 2006/95/EC bolts or studs.

Check that drain holes and plugs face downwards. We recommend opening the drain hole for motors placed outdoors and not running 24 hours / day, so that the motor can breathe, thus ensuring a dry motor.

Work is only permitted to be carried out by qualified specialists and must to be carried out in accordance with

Check the motor for external damage immediately upon receipt and, if found, inform the forwarding agent right away. Check all rating plate data, and compare it with the requirement of the motor.

Turn the shaft by hand to check free rotation, remove transport locking if used.

Transport locking must be used again for internal transport also. It is also important that transport locking is used when motors are transported mounted on equipment.

All motors should be stored indoors, in dry, vibration- and local regulations.

Before work commences, ensure that all power is switched off and cannot be switched on again. This also applies to the auxiliary power circuits, e.g. anti-condense heaters.

Check that supply voltage and frequency are the same as rated data.

Motors can be used with a supply deviation of ± 5% voltage and ± 2% frequency, according to IEC60034-1

Connection diagrams for main supply and accessory as PTC or heater are located inside the terminal box.

Lifting eyebolts must be tightened before use. Damaged eyebolts must not be used, check before use. Lifting eyes at motor must not be used to lift the motor when it is attached

Connections must be made in such a way as to ensure that a permanently safe electrical connection is maintained, both for the main supply and the earth connection.

We recommend that crimped connections are made in accordance with IEC 60352-2.

Before commissioning, measure the insulation impedance.

If values are

≤ 10MΩ at 25°C, the winding must be oven dried.

The insulation resistance reference is halved for each 20°C

Tightening torques for terminal board screws:

M5 M6 M6 M8 M8 M10 M10 M12 M16 M16 M20 M20 rise in motor temperature.

It is recommended that shafts are rotated periodically by hand to prevent grease migration.

M5

2.5 2.5 3.5 3.5 7 7 12 18

Ensure that the terminal box is clean and dry.

Unused glands must be closed.

12 18

Ensure that the terminal box is clean and dry.

Unused glands must be closed.

35 35 55 55

The motor must be fixed on a stable, clear and flat foundation. It must be sufficiently rigid to withstand possible short

5. Maintenance

circuit forces.

It is important to ensure that the mounting conditions do not cause resonance with the rotational frequency and the doubled supply frequency.

Only mount or remove drive components (pulley, coupling,

Inspect the motor at regular intervals, keep it clean and ensure free ventilation air flow, check the condition of shaft seals and replace if necessary. Both electrical and mechanical connections must be checked and tightened if

Only mount or remove drive components (pulley, coupling, etc.) using suitable tools, never hit the drive components with a hammer as this will cause damage to the bearing.

The motor are balancing with half key, ensure that the drive components are also the same.

necessary.

2

Motor Manual

This manual concerns the following types of standard induction motors from Hoyer:

HMA2, HMC2, HMD, HMT, MS, Y2E1, Y2E2, YDT

These motors are manufactured in accordance with IEC/EN

60034-4 and IEC/EN 60072.

Correct alignment is essential to avoid bearing, vibration and shaft failure.

Use appropriate methods for alignment.

Re-check the alignment after the final tightening of the bolts or studs.

Motors are rated for the ambient temperature range -20°C to +40°C and site altitudes machinery. They are CE marked according to the Low

Voltage Directive 2006/95/EC

≤1000 m above sea level.

Low-voltage motors are components for installation in machinery. They are CE marked according to the Low

Re-check the alignment after the final tightening of the bolts or studs.

Check that drain holes and plugs face downwards. We recommend opening the drain hole for motors placed outdoors and not running 24 hours / day, so that the motor

Work is only permitted to be carried out by qualified specialists and must to be carried out in accordance with

Check the motor for external damage immediately upon receipt and, if found, inform the forwarding agent right away. Check all rating plate data, and compare it with the requirement of the motor.

Turn the shaft by hand to check free rotation, remove transport locking if used.

Transport locking must be used again for internal transport also. It is also important that transport locking is used when motors are transported mounted on equipment.

All motors should be stored indoors, in dry, vibration- and local regulations.

Before work commences, ensure that all power is switched off and cannot be switched on again. This also applies to the auxiliary power circuits, e.g. anti-condense heaters.

Check that supply voltage and frequency are the same as rated data.

Motors can be used with a supply deviation of ± 5% voltage and ± 2% frequency, according to IEC60034-1

Lifting eyebolts must be tightened before use. Damaged eyebolts must not be used, check before use. Lifting eyes at motor must not be used to lift the motor when it is attached

Connections must be made in such a way as to ensure that a permanently safe electrical connection is maintained, both for the main supply and the earth connection.

We recommend that crimped connections are made in accordance with IEC 60352-2.

Before commissioning, measure the insulation impedance.

If values are

≤ 10MΩ at 25°C, the winding must be oven dried.

The insulation resistance reference is halved for each 20°C rise in motor temperature.

It is recommended that shafts are rotated periodically by hand to prevent grease migration.

M5 M5 M6 M6 M8 M8 M10 M12 M16 M20 M20

2.5 2.5 3.5 3.5 7 7 12 12 18 18 35 35

Ensure that the terminal box is clean and dry.

Unused glands must be closed.

55 55

The motor must be fixed on a stable, clear and flat foundation. It must be sufficiently rigid to withstand possible short

5. Maintenance

circuit forces.

It is important to ensure that the mounting conditions do not cause resonance with the rotational frequency and the doubled supply frequency.

Only mount or remove drive components (pulley, coupling,

Inspect the motor at regular intervals, keep it clean and ensure free ventilation air flow, check the condition of shaft seals and replace if necessary. Both electrical and mechanical connections must be checked and tightened if etc.) using suitable tools, never hit the drive components with a hammer as this will cause damage to the bearing.

The motor are balancing with half key, ensure that the drive components are also the same.

2 2

Bearing size and type are specified on the rating plate.

Motor types HMA2 and HMC2 is as standard with lifetime greased bearing with motor size

≤225.

Motor types MS and Y2E is as standard with lifetime greased bearing with motor size

≤160.

The table values are based on an ambient temperature of

25°C. The values must be halved for every 15K increase in bearing temperature.

Higher speed operations, e.g. frequency converter drive will require shorter greasing intervals. Typically, doubling the speed will reduce the values by 50%.

Typical duty hours for lifetime lubricated bearings.

6. Special note for Atex Zone 22 motors.

Frame size

56 – 160

180

200

225

180 – 225

Poles

2

2

2 – 8

2

4 – 8

Typical lifetime

40.000h

35.000h

27.000h

23.000h

40.000h

Notice for the use of electrical equipment in areas with combustible dust.

Designation of motor according to EC directive:

Ex II 3D T125°C, IP55.

Motors with a re-greasing system must be lubricated with high quality lithium complex grease, NLGI grade 2 or 3, with a temperature range of between -40°C to +150°C.

Motors are normal fitted with a data plate with greasing information; if it is missing use the following re-greasing intervals.

The dust hazardous 3-phase asynchronous motors are in accordance with European standard EN 50281-1-1.

Combustible dust areas will be found in agricultural areas and in industrial environments.

Only one electrical installation may be installed in one specified area (zone).

250

280

315

355

400

Frame Grease 2 pole size (g) (h)

160

180

200

225

20

20

25

25

4200

4200

3100

3100

35

35

50

60

80

2000

2000

1500

1000

800

4 pole

(h)

7000

7000

6500

6500

6000

6000

5500

4000

3000

6 pole

(h)

8500

8500

8500

8500

7000

7000

6500

5000

4000

7000

7000

6500

6000

6000

8 pole

(h)

8500

8500

8500

8500

Grease the motor while running, open the grease outlet plug and let the motor run 1-2 hours before the outlet grease plug is closed again.

Only certificated cable glands for category 2D may be used.

Unused glands must be closed.

Connections must be made in such a way as to ensure that a permanently safe electrical connection is maintained, both for the main supply and earth connection.

Installations must be in accordance with actual standards for installation in the Zone 22 area.

It is recommended that EN 50281-2 is followed according temperature and dust on the motor surface.

The use of motors with so much surface dust that the motor temperature increases is not permitted.

Regularly cleaning is recommended.

The radial shaft sealing ring is part of the ATEX certification.

It is important that the ring is always intact.

The shaft sealing must be regularly checked, and if dry it must be lubricated. It is recommended that the seal is re-lubricated regularly.

Always use the original seal ring when replaced.

Replacing bearings also means replacing the seals.

Grease the motor for the first time during commissioning.

The following applies in general for both lifetime lubricated and re-lubricated bearings:

At 60Hz the time will be reduced by app. 20%.

Data for vertically mounted motors are half of the above values.

All machines must be inspected regularly for mechanical damage.

The user is responsible for changing parts in accordance with the lifetime of parts, in particular: bearings, grease and lubrication of shaft sealing.

Maintenance, repairs and replacement on zone 22 motors must only be carried out by qualified specialists.

180R9289 / IOM PAHT/PAHT G 256-308 pumps - v01 / 05.2013

Hoyer Motors, Motor Manual, October 2011

Motor Manual Motor Manual

1. General

This manual concerns the following types of standard induction motors from Hoyer:

HMA2, HMC2, HMD, HMT, MS, Y2E1, Y2E2, YDT

These motors are manufactured in accordance with IEC/EN

60034-4 and IEC/EN 60072.

Motors are rated for the ambient temperature range -20°C to +40°C and site altitudes

≤1000 m above sea level.

Low-voltage motors are components for installation in machinery. They are CE marked according to the Low

Voltage Directive 2006/95/EC

Correct alignment is essential to avoid bearing, vibration and shaft failure.

Use appropriate methods for alignment.

Re-check the alignment after the final tightening of the bolts or studs.

Check that drain holes and plugs face downwards. We recommend opening the drain hole for motors placed outdoors and not running 24 hours / day, so that the motor can breathe, thus ensuring a dry motor.

2. Transport and storage

Check the motor for external damage immediately upon receipt and, if found, inform the forwarding agent right away. Check all rating plate data, and compare it with the requirement of the motor.

Turn the shaft by hand to check free rotation, remove transport locking if used.

Transport locking must be used again for internal transport also. It is also important that transport locking is used when motors are transported mounted on equipment.

All motors should be stored indoors, in dry, vibration- and dust-free conditions.

4. Electrical connection

Work is only permitted to be carried out by qualified specialists and must to be carried out in accordance with local regulations.

Before work commences, ensure that all power is switched off and cannot be switched on again. This also applies to the auxiliary power circuits, e.g. anti-condense heaters.

Check that supply voltage and frequency are the same as rated data.

Motors can be used with a supply deviation of ± 5% voltage and ± 2% frequency, according to IEC60034-1

Connection diagrams for main supply and accessory as PTC or heater are located inside the terminal box.

Lifting eyebolts must be tightened before use. Damaged eyebolts must not be used, check before use. Lifting eyes at motor must not be used to lift the motor when it is attached to other equipment.

Connections must be made in such a way as to ensure that a permanently safe electrical connection is maintained, both for the main supply and the earth connection.

We recommend that crimped connections are made in accordance with IEC 60352-2.

Before commissioning, measure the insulation impedance.

If values are

≤ 10MΩ at 25°C, the winding must be oven dried.

The insulation resistance reference is halved for each 20°C rise in motor temperature.

It is recommended that shafts are rotated periodically by hand to prevent grease migration.

Tightening torques for terminal board screws:

Thread

T.(Nm)

M5

2.5

M6 M8 M10 M12 M16 M20

3.5 7 12 18 35 55

Ensure that the terminal box is clean and dry.

Unused glands must be closed.

Check the terminal box gasket before it is remounted.

3. Installation

The motor must be fixed on a stable, clear and flat foundation. It must be sufficiently rigid to withstand possible short circuit forces.

It is important to ensure that the mounting conditions do not cause resonance with the rotational frequency and the doubled supply frequency.

Only mount or remove drive components (pulley, coupling, etc.) using suitable tools, never hit the drive components with a hammer as this will cause damage to the bearing.

The motor are balancing with half key, ensure that the drive components are also the same.

5. Maintenance

Inspect the motor at regular intervals, keep it clean and ensure free ventilation air flow, check the condition of shaft seals and replace if necessary. Both electrical and mechanical connections must be checked and tightened if necessary.

2 Hoyer Motors, Motor Manual, October 2011

Bearing size and type are specified on the rating plate.

Motor types HMA2 and HMC2 is as standard with lifetime greased bearing with motor size

≤225.

Motor types MS and Y2E is as standard with lifetime greased bearing with motor size

≤160.

The table values are based on an ambient temperature of

25°C. The values must be halved for every 15K increase in bearing temperature.

Higher speed operations, e.g. frequency converter drive will require shorter greasing intervals. Typically, doubling the speed will reduce the values by 50%.

Typical duty hours for lifetime lubricated bearings.

6. Special note for Atex Zone 22 motors.

Frame size

56 – 160

180

200

225

180 – 225

Poles

2

2

2 – 8

2

4 – 8

Typical lifetime

40.000h

35.000h

27.000h

23.000h

40.000h

Notice for the use of electrical equipment in areas with combustible dust.

Designation of motor according to EC directive:

Ex II 3D T125°C, IP55.

Motors with a re-greasing system must be lubricated with high quality lithium complex grease, NLGI grade 2 or 3, with a temperature range of between -40°C to +150°C.

Motors are normal fitted with a data plate with greasing information; if it is missing use the following re-greasing intervals.

The dust hazardous 3-phase asynchronous motors are in accordance with European standard EN 50281-1-1.

Combustible dust areas will be found in agricultural areas and in industrial environments.

Only one electrical installation may be installed in one specified area (zone).

250

280

315

355

400

Frame Grease 2 pole size (g) (h)

160

180

200

225

20

20

25

25

4200

4200

3100

3100

35

35

50

60

80

2000

2000

1500

1000

800

4 pole

(h)

7000

7000

6500

6500

6000

6000

5500

4000

3000

6 pole

(h)

8500

8500

8500

8500

7000

7000

6500

5000

4000

7000

7000

6500

6000

6000

8 pole

(h)

8500

8500

8500

8500

Grease the motor while running, open the grease outlet plug and let the motor run 1-2 hours before the outlet grease plug is closed again.

Only certificated cable glands for category 2D may be used.

Unused glands must be closed.

Connections must be made in such a way as to ensure that a permanently safe electrical connection is maintained, both for the main supply and earth connection.

Installations must be in accordance with actual standards for installation in the Zone 22 area.

It is recommended that EN 50281-2 is followed according temperature and dust on the motor surface.

The use of motors with so much surface dust that the motor temperature increases is not permitted.

Regularly cleaning is recommended.

The radial shaft sealing ring is part of the ATEX certification.

It is important that the ring is always intact.

The shaft sealing must be regularly checked, and if dry it must be lubricated. It is recommended that the seal is re-lubricated regularly.

Always use the original seal ring when replaced.

Replacing bearings also means replacing the seals.

Grease the motor for the first time during commissioning.

The following applies in general for both lifetime lubricated and re-lubricated bearings:

At 60Hz the time will be reduced by app. 20%.

Data for vertically mounted motors are half of the above values.

All machines must be inspected regularly for mechanical damage.

The user is responsible for changing parts in accordance with the lifetime of parts, in particular: bearings, grease and lubrication of shaft sealing.

Maintenance, repairs and replacement on zone 22 motors must only be carried out by qualified specialists.

3

53

Svend Hoyer A/S · Over Hadstenvej 42 · DK-8370 Hadsten

T +45 86 98 21 11 · F +45 86 98 17 79 · [email protected] · svendhoyer.com

MAKING MODERN LIVING POSSIBLE

4. Parts list PAHT and

PAHT G (521B1237)

Parts list

PAHT 2-308 pumps

PAHT G 2-308 pumps

Svend Hoyer A/S · Over Hadstenvej 42 · DK-8370 Hadsten

T +45 86 98 21 11 · F +45 86 98 17 79 · [email protected] · svendhoyer.com

danfoss.high-pressurepumps.com

Parts list

Table of Contents

Parts list for

PAHT and PAHT G pumps

(521B1237)

PAHT and PAHT G pumps

13.

14.

15.

16.

9.

10.

11.

12.

7.

8.

5.

6.

3.

4.

1.

2.

21.

22.

23.

24.

17.

18.

19.

20.

25.

26.

General

Spare parts list for PAHT 2

Exploded view for PAHT 2

Spare parts list for PAHT G 2

Exploded view for PAHT G 2

Spare parts list for PAHT 3.2-6.3

Exploded view for PAHT 3.2-6.3

Spare parts list for PAHT G 3.2-6.3

Exploded view for PAHT G 3.2-6.3

Spare parts list for PAHT 10-12.5

Exploded view for PAHT 10-12.5

Spare parts list for PAHT G 10-12.5

Exploded view for PAHT G 10-12.5

Spare parts list for PAHT 20-32

Exploded view for PAHT 20-32

Spare parts list for PAHT G 20-32

Exploded view for PAHT G 20-32

Spare parts list for PAHT 50-90

Exploded view for PAHT 50-90

Spare parts list for PAHT G 50-90

Exploded view for PAHT G 50-90

Spare parts list for PAHT 256-308

Exploded view for PAHT 256-308

Spare parts list for PAHT G 256-308

Exploded view for PAHT G 256-308

Tool sets

Not included

Parts list

Table of Contents

Parts list for

PAHT and PAHT G pumps

(521B1237)

PAHT and PAHT G pumps

13.

14.

15.

16.

9.

10.

11.

12.

7.

8.

5.

6.

3.

4.

1.

2.

21.

22.

23.

24.

17.

18.

19.

20.

25.

26.

General

Spare parts list for PAHT 2

Exploded view for PAHT 2

Spare parts list for PAHT G 2

Exploded view for PAHT G 2

Spare parts list for PAHT 3.2-6.3

Exploded view for PAHT 3.2-6.3

Spare parts list for PAHT G 3.2-6.3

Exploded view for PAHT G 3.2-6.3

Spare parts list for PAHT 10-12.5

Exploded view for PAHT 10-12.5

Spare parts list for PAHT G 10-12.5

Exploded view for PAHT G 10-12.5

Spare parts list for PAHT 20-32

Exploded view for PAHT 20-32

Spare parts list for PAHT G 20-32

Exploded view for PAHT G 20-32

Spare parts list for PAHT 50-90

Exploded view for PAHT 50-90

Spare parts list for PAHT G 50-90

Exploded view for PAHT G 50-90

Spare parts list for PAHT 256-308

Exploded view for PAHT 256-308

Spare parts list for PAHT G 256-308

Exploded view for PAHT G 256-308

Tool sets

2

521B1237 / DKCFN.PY.011.A1.02 / 05.2013

Parts list

1. General

PAHT and PAHT G pumps

•

•

•

•

•

•

This parts list provides an overview of the content of the various service sets for the

PAHT 2-6.3

PAHT G 2-6.3

PAHT 10-12.5

PAHT G 10-12.5

PAHT 20-32

PAHT G 20-32

•

•

•

•

PAHT 50-90

PAHT G 50-90

PAHT 256-308

PAHT G 256-308 as well as exploded views of the pumps.

Not included

Parts list

Spare parts list for

PAHT 256-308

PAHT and PAHT G pumps

10 2

11 1

13 2

31 1

34 2

61 1

62 4

63 1

64 1

65 1

66 9

67 1

71 1

3

4

5

5

9

2

2

Pos Qnt Designation

1 1 Housing

2

1

Pin, Ø6 x 10

Pin, Ø6 x 10

4

4

17 Screw, M8 x 30

15 Screw, M8 x 30

1

Bleeding plug, G 1/4”

O-ring, Ø11 x 2

O-ring, Ø228 x 4

Material

Duplex / PEEK

AISI 316

AISI 316

Super Duplex

NBR

AISI 316

AISI 316

NBR

O-ring, Ø9,19 x 2,62

End cover CW

Screw, M8 x 16

Swash plate

Pin, Ø10,5 x 20

Cylinder barrel

Spring

Spring guide

Retainer guide

Retainer plate

Piston

Key, 12 x 8 x 70

Ass. retainer

NBR

Duplex

AISI 316

Super Duplex

Duplex

Super Duplex / PEEK

Duplex

PP

Super Duplex

Super Duplex

Super Duplex / PEEK

AISI 316

Super Duplex / PEEK

91 1

92 1

93 9

94 9

121 1

122 1

123 1

124 1

125 1

126 2

127 2

Port plate

Valve plate

Back up ring

O-ring, Ø30,2 x 3

Port flange

O-ring, Ø68 x 2

O-ring, Ø228 x 4

Shaft sealing

End cover

Pin, Ø10,5 x 20

Screw, M6 x 16

Super Duplex / PEEK

Super Duplex

PTFE

NBR

Duplex

NBR

NBR

Hastelloy C276

Super Duplex

Super Duplex

AISI 316

128 15 Screw, M8 x 90

142 1 Washer for shaft seal

AISI 316

PP

147 1

1

Screw, M8 x 16

Service instruction

AISI 316 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

Parts list

Spare parts list for

PAHT 256-308

PAHT and PAHT G pumps

10 2

11 1

13 2

31 1

34 2

61 1

62 4

63 1

64 1

65 1

66 9

67 1

71 1

3

4

5

5

9

2

2

Pos Qnt Designation

1 1 Housing

2

1

Pin, Ø6 x 10

Pin, Ø6 x 10

4

4

17 Screw, M8 x 30

15 Screw, M8 x 30

1

Bleeding plug, G 1/4”

O-ring, Ø11 x 2

O-ring, Ø228 x 4

Material

Duplex / PEEK

AISI 316

AISI 316

Super Duplex

NBR

AISI 316

AISI 316

NBR

O-ring, Ø9,19 x 2,62

End cover CW

Screw, M8 x 16

Swash plate

Pin, Ø10,5 x 20

Cylinder barrel

Spring

Spring guide

Retainer guide

Retainer plate

Piston

Key, 12 x 8 x 70

Ass. retainer

NBR

Duplex

AISI 316

Super Duplex

Duplex

Super Duplex / PEEK

Duplex

PP

Super Duplex

Super Duplex

Super Duplex / PEEK

AISI 316

Super Duplex / PEEK

91 1

92 1

93 9

94 9

121 1

122 1

123 1

124 1

125 1

126 2

127 2

Port plate

Valve plate

Back up ring

O-ring, Ø30,2 x 3

Port flange

O-ring, Ø68 x 2

O-ring, Ø228 x 4

Shaft sealing

End cover

Pin, Ø10,5 x 20

Screw, M6 x 16

Super Duplex / PEEK

Super Duplex

PTFE

NBR

Duplex

NBR

NBR

Hastelloy C276

Super Duplex

Super Duplex

AISI 316

128 15 Screw, M8 x 90

142 1 Washer for shaft seal

AISI 316

PP

147 1

1

Screw, M8 x 16

Service instruction

AISI 316 x x x x x x x x x x x x x x x x x

24

521B1237 / DKCFN.PY.011.A1.02 / 05.2013

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

Parts list

Exploded view for

PAHT 256-308

PAHT and PAHT G pumps

Parts list

Spare parts list for

PAHT G 256-308

PAHT and PAHT G pumps

127

128

142

145

147

121

122

123

124

125

126

67

71

91

92

93

94

61

62

63

64

65

66

10

11

13

31

34

3

4

5

9

Pos.

Qnt.

Designation

1 1 Housing

2

2

2

1

Pin Ø6 x 10

Pin Ø6 x 10

4

4

17

1

Bleeding plug G 1/4"

O-ring Ø11 x 2

Screw M8 x 30

O-ring Ø228 x 4

2 O-ring Ø9,19 x 2,62

1 End cover CW

2 Screw M8 x 16

1 Swash plate

2 Pin Ø10,5 x 20

1 Cylinder barrel

4 Spring

1 Spring guide

1 Retainer guide

1 Retainer plate

9 Piston

1 Key 12 x 8 x 70

1 Ass. retainer

1 Port plate

1 Valve plate

9 Back up ring

9 O-ring Ø30,2 x 3

1 Port flange

1 O-ring Ø68 x 2

1 O-ring Ø228 x 4

1 Shaft sealing

1 End cover

2 Pin Ø10,5 x 20

2 Screw M6 x 16

15 Screw M8 x 90

1 Washer for shaft seal

4 Locking nut M12

1 Screw M8 x 16

1 Service instruction

Material

Duplex / PEEK

AISI 316

AISI 316

Super Duplex

NBR

AISI 316

NBR

NBR

Duplex

AISI 316

Super Duplex

Duplex

Duplex

NBR

NBR

Hastelloy C276

Super Duplex

Super Duplex

AISI 316

AISI 316

PP

AISI 316

AISI 316

Super Duplex / PEEK

Duplex

PP

Super Duplex

Super Duplex

Super Duplex / PEEK

AISI 316

Super Duplex / PEEK

Super Duplex / PEEK

Super Duplex

PTFE

NBR x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

Parts list

Spare parts list for

PAHT G 256-308

PAHT and PAHT G pumps

127

128

142

145

147

121

122

123

124

125

126

67

71

91

92

93

94

61

62

63

64

65

66

10

11

13

31

34

3

4

5

9

Pos.

Qnt.

Designation

1 1 Housing

2

2

2

1

Pin Ø6 x 10

Pin Ø6 x 10

4

4

17

1

Bleeding plug G 1/4"

O-ring Ø11 x 2

Screw M8 x 30

O-ring Ø228 x 4

2 O-ring Ø9,19 x 2,62

1 End cover CW

2 Screw M8 x 16

1 Swash plate

2 Pin Ø10,5 x 20

1 Cylinder barrel

4 Spring

1 Spring guide

1 Retainer guide

1 Retainer plate

9 Piston

1 Key 12 x 8 x 70

1 Ass. retainer

1 Port plate

1 Valve plate

9 Back up ring

9 O-ring Ø30,2 x 3

1 Port flange

1 O-ring Ø68 x 2

1 O-ring Ø228 x 4

1 Shaft sealing

1 End cover

2 Pin Ø10,5 x 20

2 Screw M6 x 16

15 Screw M8 x 90

1 Washer for shaft seal

4 Locking nut M12

1 Screw M8 x 16

1 Service instruction

26

521B1237 / DKCFN.PY.011.A1.02 / 05.2013

Material

Duplex / PEEK

AISI 316

AISI 316

Super Duplex

NBR

AISI 316

NBR

NBR

Duplex

AISI 316

Super Duplex

Duplex

Duplex

NBR

NBR

Hastelloy C276

Super Duplex

Super Duplex

AISI 316

AISI 316

PP

AISI 316

AISI 316

Super Duplex / PEEK

Duplex

PP

Super Duplex

Super Duplex

Super Duplex / PEEK

AISI 316

Super Duplex / PEEK

Super Duplex / PEEK

Super Duplex

PTFE

NBR x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x

Parts list

Exploded view for

PAHT G 256-308

PAHT and PAHT G pumps

Parts list

26. Tool sets

PAHT and PAHT G pumps

Designation

Shaft bush, torpedo

Press tool

Mounting screw

Allen key, 6 mm

Adjustable pin wrench

Combination wrench, 10 mm

Combination wrench, 13 mm

Nut, M8 x 6.5 x 13

Guide bolt, M8 x 140

Shaft seal extractor, Ø45

Press bush, Ø45

Eye bolt, M8

Press bush for valve plate

Stop for retainer plate

Screw, M8 x 20

Screw, M8 x 70 x x x x x x x x x x x x x x x x x x x x x x x x x

Danfoss A/S

High Pressure Pumps

DK-6430 Nordborg

Denmark

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.

This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Parts list

26. Tool sets

PAHT and PAHT G pumps

Designation

Shaft bush, torpedo

Press tool

Mounting screw

Allen key, 6 mm

Adjustable pin wrench

Combination wrench, 10 mm

Combination wrench, 13 mm

Nut, M8 x 6.5 x 13

Guide bolt, M8 x 140

Shaft seal extractor, Ø45

Press bush, Ø45

Eye bolt, M8

Press bush for valve plate

Stop for retainer plate

Screw, M8 x 20

Screw, M8 x 70 x x x x x x x x x x x x x x x x x x x x x x x x x

MAKING MODERN LIVING POSSIBLE

5. Trouble shooting guide for PAH, PAHT, PAHT G,

Guideline

Trouble shooting guide for

PAH / PAHT / PAHT G / PAHT 674 and PAH F pumps

Danfoss A/S

High Pressure Pumps

DK-6430 Nordborg

Denmark

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.

This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

28

521B1237 / DKCFN.PY.011.A1.02 / 05.2013

danfoss.high-pressurepumps.com

Guideline Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

Table of Contents

Trouble shooting guide for

PAH, PAHT, PAHT G and

PAH F pumps

4.

5.

6.

6.1

6.2

6.3

2.

3.

Trouble shooting fish bone chart

1. No flow/no pressure

Reduced flow/reduced pressure

High torque on electric motor

Noise from pump

Noise from installation

Typical signs of wear

Valve plate

Port plate

Swash plate

Guideline Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

Table of Contents

Trouble shooting guide for

PAH, PAHT, PAHT G and

PAH F pumps

4.

5.

6.

6.1

6.2

6.3

2.

3.

Trouble shooting fish bone chart

1. No flow/no pressure

Reduced flow/reduced pressure

High torque on electric motor

Noise from pump

Noise from installation

Typical signs of wear

Valve plate

Port plate

Swash plate

Guideline

Trouble shooting fish bone chart

Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

2

04.2013

Guideline Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

1. No flow/no pressure

Cause

1.1 Dry running

(no water supply to the pump)

1.2 Pump reversing

(electric motor is running the wrong direction, i.e. counter-clockwise)

Remedy

If no water comes out of the pump:

1.1.1 Check that inlet valve is open.

1.1.2 Check that booster pump is running.

1.2.1 Change the phase on the electric motor to make it run clockwise.

WARNING:

- The pump must not run without water for more than a few seconds.

- If the pump takes in water from the high- pressure outlet line, it builds up pressure in pump housing and will eventually break down.

Comments

Mount a low pressure switch in front of the pump and check its set point/ function. The low pressure switch ensures that the pump does not start until the inlet pressure has reachedminimum inlet pressure (see Data sheet).

Rotation direction for the pump is shown by an arrow on the label on the pump.

1.3 No rotation of electric motor

1.4 No rotation of pump

1.5 Axial load on pump shaft

(may cause high internal leakage)

Only applying to

PAH 2-12.5

PAHT 2-308

PAH F 20-40

PAHT G 2-308

1.3.1 Check that main switch is switched on.

1.3.2 Check the electricity at the facility.

1.3.3 Ensure that motor relay is switched on.

1.3.4 Ensure that fuse is not blown.

1.3.5 Ensure that booster pump is started.

1.3.6 Check that the monitor switches are working correctly.

1.3.7 Disconnect pump from electric motor and check that the motor is capable of running with no load.

1.4.1 Ensure that coupling between electric motor and pump is connected.

1.4.2 Check if coupling is damaged.

1.4.3 Check that electric motor is sized correctly.

1.4.4 Check that the electrical installation is correctly sized.

1.4.5 Contact Danfoss Sales office for guidelines in how to troubleshoot internal pump parts.

1.5.1 Ensure that the air gap between the two coupling parts is min 5 mm. It should always be possible to move the plastic part on the coupling at least 3 mm.

If motor-type relay or the electrical fuse is blown, check that electric motor is sized correctly.

To ensure easy mounting of the flexible coupling without using tools, the tolerances must be dimensioned accordingly.

WARNING:

Any axial and/or radial loads on the shaft must be avoided. Any axial or radial load will cause breakdown.

A - Bell housing

B - Flexible coupling

C - Motor shaft

1.6 Pump damage

(the internal parts may be damaged)

1.6.1 Contact Danfoss sales office for guidelines in how to troubleshoot internal pump parts.

A B

Instructions on internal elements are available on www.danfoss.high-pressurepumps.com

C

Guideline Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

1. No flow/no pressure

Cause

1.1 Dry running

(no water supply to the pump)

1.2 Pump reversing

(electric motor is running the wrong direction, i.e. counter-clockwise)

Remedy

If no water comes out of the pump:

1.1.1 Check that inlet valve is open.

1.1.2 Check that booster pump is running.

1.2.1 Change the phase on the electric motor to make it run clockwise.

WARNING:

- The pump must not run without water for more than a few seconds.

- If the pump takes in water from the high- pressure outlet line, it builds up pressure in pump housing and will eventually break down.

Comments

Mount a low pressure switch in front of the pump and check its set point/ function. The low pressure switch ensures that the pump does not start until the inlet pressure has reachedminimum inlet pressure (see Data sheet).

Rotation direction for the pump is shown by an arrow on the label on the pump.

1.3 No rotation of electric motor

1.4 No rotation of pump

1.5 Axial load on pump shaft

(may cause high internal leakage)

Only applying to

PAH 2-12.5

PAHT 2-308

PAH F 20-40

PAHT G 2-308

1.3.1 Check that main switch is switched on.

1.3.2 Check the electricity at the facility.

1.3.3 Ensure that motor relay is switched on.

1.3.4 Ensure that fuse is not blown.

1.3.5 Ensure that booster pump is started.

1.3.6 Check that the monitor switches are working correctly.

1.3.7 Disconnect pump from electric motor and check that the motor is capable of running with no load.

1.4.1 Ensure that coupling between electric motor and pump is connected.

1.4.2 Check if coupling is damaged.

1.4.3 Check that electric motor is sized correctly.

1.4.4 Check that the electrical installation is correctly sized.

1.4.5 Contact Danfoss Sales office for guidelines in how to troubleshoot internal pump parts.

1.5.1 Ensure that the air gap between the two coupling parts is min 5 mm. It should always be possible to move the plastic part on the coupling at least 3 mm.

If motor-type relay or the electrical fuse is blown, check that electric motor is sized correctly.

To ensure easy mounting of the flexible coupling without using tools, the tolerances must be dimensioned accordingly.

WARNING:

Any axial and/or radial loads on the shaft must be avoided. Any axial or radial load will cause breakdown.

A - Bell housing

B - Flexible coupling

C - Motor shaft

1.6 Pump damage

(the internal parts may be damaged)

1.6.1 Contact Danfoss sales office for guidelines in how to troubleshoot internal pump parts.

A B

Instructions on internal elements are available on www.danfoss.high-pressurepumps.com

C

4

04.2013

Guideline

2.2 Low inlet pressure

2.3 Rotation speed (rpm)

Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

2. Reduced flow/reduced pressure

Cause

2.1 Wear on pump

Large internal leakage due to:

Remedy

2.1.1 Dismantle the pump.

2.1.2 Check valve plate.

Valve plate has marks/scratches on the surface facing the port plate. Minor wear on valve plate can cause large internal leakage. See Index 6.1.

2.1.3 Check port plate.

Port plate has marks/scratches on the surface facing the valve plate. Minor wear on port plate can cause large internal leakage. See Index 6.2.

2.1.4 Check cylinder barrel.

Liners in cylinder barrel may be scratched or worn. Insert a piston in the liner and check the fit. If there is any space

(clearance) between liner and piston, liner or piston is worn.

2.1.5 Pre-treatment:

Analyse fluid for content of particles.

- Check that filters are OK and working

correctly.

2.1.6 Main filtration:

Check that the correct filter type is used

(particles in fluidmust not exceed 10 μm).

Danfoss High Pressure Pumps supplies filters, please contact the sales office.

Comments

Typical signs of wear:

Polished surface all over the swash plate.

Normally, only half of the swash plate = the pressure side is polished. See index 6.3.

If the ring is missing, the piston is very worn.

2.1.7 Fluid type:

The PAH/PAH F (tapwater) and PAHT/PAHT

G (ultra pure water) pumps are designed for water operation; for any other fluid, please contact Danfoss High Pressure

Pumps sales office for further help.

The filters can be bypassed, even if they are correctly mounted. Some filters can create channelling where particles can pass trough the filter in tunnels. String wound filters are typically channelling filters. A string wound filter may have a filtration efficiency of only

50%, which will cause internal wear and must

always be followed by a main filter.

Insufficient filtration means that too many or too large hard particles can pass the main filter because it is damaged, bypassed or simply too poor. Filtration efficiency must be 99.98%

(Beta = 5000) at 10 μm to prevent abnormal wear of the pump.

2.1.8 High fluid temperature:

If fluid temperature is above 50°C, stop the pump immediately.

- Check internal parts (see above).

2.2.1 Check that booster pump supplies the right pressure/flow.

2.2.2 Check if filters require replacement.

Temperature > 50° C will cause wear on internal pump parts. Mount a temperature switch and check its set point / function. The temperature switch will ensure that the pump stops at fluid temperatures > 50° C.

If the pressure drop across the filters is too high, the booster pump does not deliver sufficient flow/pressure. No pressure or low pressure results in cavitation and insufficient internal lubrication causing wear on internal pump parts.

2.3.1 If VFD-operated, check frequency.

2.3.2 Check that rotation speed of the electric motor is as stated on name plate on electric motor. Check that the motor rotor winding is not damaged.

Mount a low-pressure switch in front of the pump and check its set point/ function. The low- pressure switch ensures that the pump does not start until the inlet pressure has reached 1 bar.

Speeds below minimum limit (see Data sheet) result in insufficient internal lubrication causing wear on the internal pump parts.

Guideline

3.2 Pump starts against pressure

3.3 Constant torque

3.4 Water pump damage

Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

3. High torque on electric motor

Cause

3.1 Too high outlet pressure from pump

Remedy

3.1.1 Check for blocked nozzles or a faulty adjusted relief valve.

Comments

Pressure changes due to flow restrictions. This will also cause high motor torque.

3.2.1 Check that electric motor is correctly sized.

3.2.2 Check internal parts (see item 2.1).

3.2.3 Systems with more than one electric motor installed:

Start motors simultaneously.

3.3.1 Please contact Danfoss sales office.

Pumps run in parallel with cascade start, may switch off the motor relay due to too high torque caused by high outlet pressure.

3.4.1 Dismantle pump and check for wear.

If the electric motor is too small for the pump, it cannot provide sufficient torque.

Too heavy damage in the pump will increase friction causing a high torque (see item 6,

Typical signs of wear).

Guideline

3.2 Pump starts against pressure

3.3 Constant torque

3.4 Water pump damage

Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

3. High torque on electric motor

Cause

3.1 Too high outlet pressure from pump

Remedy

3.1.1 Check for blocked nozzles or a faulty adjusted relief valve.

Comments

Pressure changes due to flow restrictions. This will also cause high motor torque.

3.2.1 Check that electric motor is correctly sized.

3.2.2 Check internal parts (see item 2.1).

3.2.3 Systems with more than one electric motor installed:

Start motors simultaneously.

3.3.1 Please contact Danfoss sales office.

Pumps run in parallel with cascade start, may switch off the motor relay due to too high torque caused by high outlet pressure.

3.4.1 Dismantle pump and check for wear.

If the electric motor is too small for the pump, it cannot provide sufficient torque.

Too heavy damage in the pump will increase friction causing a high torque (see item 6,

Typical signs of wear).

Guideline

4. Noise from pump

Cause

4.1 Air in fluid

4.2 Bleeding conditions of pump

4.3 Min/max nominal inlet pressure

4.4 Pump reversing

4.5 High rotation speed (rpm)

4.6 Outlet pressure

4.7 Soft start/stop

Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

Remedy

4.1.1 Ensure that the entire inlet line is bled before starting up the system.

4.1.2 Ensure that air cannot enter into the inlet line.

4.2.1 Follow the instructions “Initial start-up” supplied with the new pump.

4.2.2 Ensure that the pump is completely bled before start-up.

4.3.1 Ensure that inlet pressure is between the limits specified in the Data sheet.

4.3.2 Check the pump for internal damage.

Comments

Small air bubbles will accumulate and create large bubbles causing internal cavitation and thus making the pump very noisy.

WARNING:

The pump can only run few minutes with air in the fluid without being damaged.

The pump and the inlet line must be completely bled before start-up, otherwise the pump will cavitate and make high noise.

WARNING:

The pump can only run few minutes with air in the fluid without being damaged.

Too high inlet pressure causes too high pressure inside the pump damaging the pistons and eventually the pump.

Inlet pressure below min. limit causes cavitation and insufficient internal lubrication resulting in wear on internal pump parts.

4.4.1 Dismantle pump and check if anything is broken or worn (See “1. No flow”, item 1.2

Pump reversing”).

WARNING:

The pump must not run without water for more than a few seconds. If the pump takes in water from the high-pressure outlet line, it builds up pressure and will eventually be damaged.

4.5.1 If electric motor rpm is too high, dismantle pump and check for damage.

4.5.2 If the rpm is within the specified range of the pump data sheet and abnormal noise remains, dismantle pump and check for damage.

Mount a low-pressure switch in front of the pump and check its set point/ function. The low-pressure switch will ensure that the pump does not start until the minimum inlet pressure has been reached.

If pump rotates in wrong direction, it will take in water from the high-pressure outlet line.

Pressure will be built up inside the pump and it will eventually be damaged.

Higher rpm than specified in the pump data sheet results in wear of the pistons, i.e. pistons may be damaged.

High rpm will also increase pressure pulsations from the pump, and the noise level will increase.

4.6.1 If outlet pressure is too low, check set point of outlet pressure valve.

4.6.2 If outlet pressure is lower than mentioned in the pump data sheet, please contact

Danfoss High Pressure Pumps technical support.

4.6.3 If outlet pressure has exceeded its maximum, check set point of outlet pressure valve.

4.6.4 Check internal parts for wear/damage.

4.7.1 Check if noise is normal when the pump is running at operation speed.

4.7.2 If noise is abnormal at operation speed, check internal parts (see above).

If rpm is changed, noise frequency will also change.

At too low outlet pressure, the pump will create higher pressure pulsations and thus make noise. Too low pressure also causes insufficient internal lubrication and wear on internal parts.

Pump may eventually be damaged.

Too high outlet pressure may damage the pump.

Noise frequency changes during soft start-up/ stop.

6

04.2013

Guideline Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

5. Noise from installation

Cause

5.1 Inlet/outlet connections (hoses/pipes)

5.2 Length/dimension of inlet/outlet line

5.3 Hose stiffness

5.4 Hoses/pipes mounted directly on frame

Remedy

5.1.1 Use flexible hoses at inlet/outlet connections.

5.1.2 Mount the connections to the frame by a vibration damper mounting plate.

5.2.1 Increase pipe diameter and/or reduce the number of bends.

Comments

Non-flexible connections mounted directly on the frame will cause even small pressure pulsations from pump and create vibrations in the system/plant.

5.3.1 Use a more flexible hose.

5.4.1 Mount the connections to the frame by a vibration damper mounting plate.

5.5 Vibration damper under the electric motor 5.5.1 Mount a vibration damper below the motor/pump.

Too small pipes or too many bends may create too fast flow/turbulence through the pipes and thus increase the noise level.

Too stiff hoses cannot damp the small pressure pulsations from the pump, and subsequently vibrations occur in the system/plant.

If the hoses are mounted directly on the frame, the small pressure pulsations from the pump can be transferred to the frame and the rest of the system/plant.

When no damper is installed below the electric motor, vibrations from the motor and pump may be transferred to the frame and the rest of the system/plant.

Guideline Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

5. Noise from installation

Cause

5.1 Inlet/outlet connections (hoses/pipes)

5.2 Length/dimension of inlet/outlet line

5.3 Hose stiffness

5.4 Hoses/pipes mounted directly on frame

Remedy

5.1.1 Use flexible hoses at inlet/outlet connections.

5.1.2 Mount the connections to the frame by a vibration damper mounting plate.

5.2.1 Increase pipe diameter and/or reduce the number of bends.

Comments

Non-flexible connections mounted directly on the frame will cause even small pressure pulsations from pump and create vibrations in the system/plant.

5.3.1 Use a more flexible hose.

5.4.1 Mount the connections to the frame by a vibration damper mounting plate.

5.5 Vibration damper under the electric motor 5.5.1 Mount a vibration damper below the motor/pump.

Too small pipes or too many bends may create too fast flow/turbulence through the pipes and thus increase the noise level.

Too stiff hoses cannot damp the small pressure pulsations from the pump, and subsequently vibrations occur in the system/plant.

If the hoses are mounted directly on the frame, the small pressure pulsations from the pump can be transferred to the frame and the rest of the system/plant.

When no damper is installed below the electric motor, vibrations from the motor and pump may be transferred to the frame and the rest of the system/plant.

Guideline

6. Typical signs of wear

6.1 Valve plate

Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

Picture 1 A normally worn valve plate has no marks/scratches but only a slightly

polished surface.

No scratches or marks should be felt. The surface must be flat and level.

Picture 2

Scratches

Picture 3

A worn valve plate has scratches, and/or a polished surface. Even small scratches will give a loss of flow.

A good way to identify a worn valve plate is to hold a straight knife edge over the valve plate. When holding it up to the light, it will be possible to see any space between the knife edge and the valve plate. See picture 3.

If any light can be seen between the two arrows on the picture, the valve plate is worn.

If any scratches or marks can be felt by running a fingernail over the surface, the valve plate is worn.

The valve plate on picture 3 is highly damaged.

8

04.2013

Guideline

6.2 Port plate

Picture 1

Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

6.3 Swash plate

Picture 1

Scratc hes

Level d nd s hining P

EEK n

If the port plate has scratches, level differences or both between the arrows, the port plate must be replaced.

Even small scratches or wear will cause loss of flow.

To check: See item 6.1, picture 3

If the swash plate is polished 360°, it is an indication of insufficient filtration.

The surface of the swash plate must be plane and even at same level all over. To check this, please see item 6.1, picture 3.

If the surface has any marks/scratches it is worn/damaged and a new one is required.

Please contact Danfoss High Pressure Pumps sales office for further information.

Danfoss A/S

High Pressure Pumps

DK-6430 Nordborg

Denmark

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.

This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Guideline

6.2 Port plate

Picture 1

Trouble shooting guide for PAH, PAHT, PAHT G, PAHT 674 and PAH F pumps

6.3 Swash plate

Picture 1

Scratc hes

Level d nd s ifferen ces b

EEK n

If the port plate has scratches, level differences or both between the arrows, the port plate must be replaced.

Even small scratches or wear will cause loss of flow.

To check: See item 6.1, picture 3

If the swash plate is polished 360°, it is an indication of insufficient filtration.

The surface of the swash plate must be plane and even at same level all over. To check this, please see item 6.1, picture 3.

If the surface has any marks/scratches it is worn/damaged and a new one is required.

Please contact Danfoss High Pressure Pumps sales office for further information.

MAKING MODERN LIVING POSSIBLE

6. Right and wrong

- Trouble shooting guide for water hydraulic systems

Right and wrong

Trouble shooting guide for water hydraulic systems

Danfoss A/S

High Pressure Pumps

DK-6430 Nordborg

Denmark

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.

This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

10

04.2013

danfoss.high-pressurepumps.com

180R9042

4.

Pump location

Design

1.

Choice of material

.

.

.

Rubber

Plastic

Stainless steel

.

Iron

.

Copper

.

Brass

.

Aluminium

Always use system components made of corrosion proof materials

Non-corrosion proof materials may cause damage

2.

< 10 m m abs.

Choice of filter

> 10 m m

Pump always to be placed below water surface level

Pump location above water surface level will cause damage

5.

Suction conditions

6.

System to be dimensioned to provide a suction pressure of the pump inlet of max. 0.1 bar vacuum

Poor suction conditions will cause malfunction and damage the pump

Pressure Relief valve

3.

Install a 10 micron absolute filter with pressure switch

Return filter with bypass valve and poorer filterability than 10 damage the system m

will

Filter location

7.

Pressure relief valve to be mounted vertically or with vertical outlet and connected to return hose or tank

Coupling the pressure relief valve outlet directly to the pump inlet may damage the pump

Water supply

Locate the return filter in the return line immediately before the tank

Placing the return filter upstream of the final load may damage the pump

System to be filled via filter

Filling system with unfiltered water causes damage

Installation

8.

Impurities

11.

Assembly of coupling

Prior to installation, burrs and chips and other impurities must be removed from pipes and hoses, eg with a felt plug

Chips or other impurities in the system may cause damage

9.

Sealing

The coupling must be easy and simple to assemble (see product instruction)

Never use force when assembling the coupling parts, as this will damage the motor/pump

12.

Coupling

= min. 3 mm

0 mm

Fittings in screwed components to be sealed with O-rings or bonded seals

Using teflon tape or packing yarn in joints may cause damage

10.

Grease

Ensure always to have 3 mm distance between coupling flanges

Insufficient distance and/or misalignment between the coupling flanges will damage the pump

13.

Water supply

Correctly limited quantities of grease prevent seizing

Too much grease may develop biofilm causing operational failures

Fill system with water before starting to ensure lubrication and cooling

Starting without water will cause damage

Wiring

14.

Level indicator

Level and temperature indicators must be fitted. Follow installation instructions

Missing or incorrectly connected level and temperature indicators cause damage

15.

1

?

2

Rotation direction

Check pump drive motor rotation direction matches that of the pump prior to installation

Incorrect rotation direction will damage the pump

16.

Bleeding

Starting procedure

Cleaning procedure

1. Fill cold water into the system via the return filter and

bleed the pump (Power Packs PPH 4 - 6.3 - 10 and 12.5 are

self-bleeding)

2. Start and bleed the system -without pressure by opening

the bypass valve

3. Add the cleaning agent to give 3% agent/water solution

4. Run the system for 60 min. and activate all components as

often as possible to ensure effective flushing with the

cleaning agent

5. Empty the system of the cleaning agent solution

Flushing procedure

6. Fill cold water through the return filter and bleed the

pump (Power Packs PPH 4 - 6.3 - 10 and 12.5 are

self-bleeding)

7. Run the system for 30 min. and activate all components as

often as possible

8. Empty the system of the water

9. Alternatively the system may be flushed by running the

unit without the return hose while continuously filling up

water. The flushing should continue until there is no trace

of cleaning agent in the return water

10. Change the return filter element, fill cold water through

the return filter and bleed the pump during start up

11. The system is now ready for operation

Starting procedure

Bleeding the pump will ensure correct cooling and lubrication

Insufficient bleeding may cause damage (not applicable to Power Packs)

60 min.

2-3 days

Observing the starting procedure will ensure problem-free operation

If the system is not cleaned before starting, the filter will clog

Trouble shooting

Open ended water systems

No water supply

No

.

Is water coming

out of the tap?

.

Are all taps open?

Yes

Yes

.

Is the control light

for “low pump suction

pressure” on?

.

The filter is clogging

No

.

Is water coming

through the filter?

No

Yes

.

Replace filter element

No

.

Is the water supply ok?

.

Is water supplied to the pump?

Yes

.

Is the electric motor of

the pump unit rotating?

No

Yes

.

Is the water in the tank

very hot? Ie above 50 o

Yes

No

.

Lower inlet

temperature or

provide better cooling

.

Is the power supply ok?

.

Are control lights on?

Yes

No

.

Is the filter clogged?

.

Is the filter control

light on?

Yes

.

Replace filter element

Contact serviceman

No

.

A blown fuse / or short

circuit?

.

Check power supply

and fuses and contact

electrician

.

Turn on the tap for

water supply

Stamp

Trouble shooting

Open ended water systems

No water supply

No

.

Is water coming

out of the tap?

.

Are all taps open?

Yes

Yes

.

Is the control light

for “low pump suction

pressure” on?

.

The filter is clogging

No

.

Is water coming

through the filter?

No

Yes

.

Replace filter element

No

.

Is the water supply ok?

.

Is water supplied to the pump?

Yes

.

Is the electric motor of

the pump unit rotating?

No

Yes

.

Is the water in the tank

very hot? Ie above 50 o

Yes

No

.

Lower inlet

temperature or

provide better cooling

.

Is the power supply ok?

.

Are control lights on?

Yes

No

.

Is the filter clogged?

.

Is the filter control

light on?

Yes

.

Replace filter element

Contact serviceman

No

.

A blown fuse / or short

circuit?

.

Check power supply

and fuses and contact

electrician

.

Turn on the tap for

water supply

Stamp

Trouble shooting

Closed water systems

The system does not work

No

.

Is there sufficient water

in the tank?

Yes

.

Fill water into the system

.

Is the electric motor of

the pump unit rotating?

No

Yes

.

Is the water in the tank

very hot? Ie above 50 o

Yes

No

.

A blown fuse/or short

circuit?

.

Check power supply

and fuses and contact

electrician

No

.

Is the power supply ok?

.

Are control lights on?

Yes

.

Is the filter clogged?

.

Is the filter control

light on?

No

Yes

.

At temperatures

higher than 50 o

the

pump drive cuts out.

Consequently the

cooler must be

checked/cleaned

.

Replace filter element

Contact serviceman

.

Trace leakage, if any

Stamp

78

180R9289 / IOM PAHT/PAHT G 256-308 pumps - v01 / 05.2013

DKCFN.PI.000.C2.02 180R9042 521B0288

Trouble shooting

Closed water systems

The system does not work

No

.

Is there sufficient water

in the tank?

Yes

.

Fill water into the system

.

Is the electric motor of

the pump unit rotating?

No

Yes

.

Is the water in the tank

very hot? Ie above 50 o

Yes

No

.

A blown fuse/or short

circuit?

.

Check power supply

and fuses and contact

electrician

No

.

Is the power supply ok?

.

Are control lights on?

Yes

.

Is the filter clogged?

.

Is the filter control

light on?

No

Yes

.

At temperatures

higher than 50 o

the

pump drive cuts out.

Consequently the

cooler must be

checked/cleaned

.

Replace filter element

Contact serviceman

.

Trace leakage, if any

Stamp

User manual Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

180R9289 / IOM PAHT/PAHT G 256-308 pumps - v01 / 05.2013

79

DKCFN.PI.000.C2.02 180R9042 521B0288

User manual Installation, Operation and Maintenance Manual for PAHT / PAHT G 256-308 pumps

Subject index

A

Address . . . . . . . . . . . . . . . . . . . . . . . 7

Air bubbles . . . . . . . . . . . . . . . . . . .9, 69

Appendix . . . . . . . . . . . . . . . . . . . . . 17

Application range . . . . . . . . . . . . . . . . . 8

Approval . . . . . . . . . . . . . . . . . . . . . . . 6

Arrival . . . . . . . . . . . . . . . . . . . . . . . . 9

Assembling . . . . . . . . . . . . . . . .12, 15, 75

ATEX . . . . . . . . . . . . . . . . . . . 6, 7, 21, 51

B

Benefits . . . . . . . . . . . . . . . . . . . . . . 21

Bleed . . . . . . . . 8, 9, 13, 14, 15, 35, 36, 37, 38

>> . . . . . . . . . . . . . . . 39, 46, 47, 65, 69, 76

C

Checklist . . . . . . . . . . . . . . . . . . . . . . 12

Check points . . . . . . . . . . . . . . . . . . . 12

Chemicals . . . . . . . . . . . . . . . . . . . . . . 9

Cleanliness . . . . . . . . . . . . . . . . . . 11, 14

Closed system design . . . . . . . . . . . 11, 34

Commissioning . . . 6, 8, 11, 12, 13, 15, 50, 51

Connections . . . . . 7, 9, 10, 11, 12, 15, 32, 33

>> . . . . . . . . . . 34, 35, 43, 46, 50, 51, 65, 70

Corrosion . . . . . . . . . . . . 12, 16, 46, 47, 74

Coupling . . . . . . . . . 8, 12, 13, 15, 16, 32, 44

>> . . . . . . . . . . . . . . . . . 45, 50, 66, 74, 75

D

Danger . . . . . . . . . . . . . . . . . . 6, 7, 13, 16

Data sheet . . . . . . . . . . . . . . . . . . . . . 19

Declaration of Conformity . . . . . . . . . . . 5

Design . . . . . . . 7, 8, 11, 12, 13, 14, 16, 20, 21

>> . . . . . . . . 32, 33, 34, 40, 43, 44, 47, 67, 74

Distributor . . . . . . . . . . . . . . . . . . . 6, 7, 8

Dimensions . . . . . . . . . . . . . . 8, 11, 35, 65

Direction of rotation . . . . . . . . . 13, 45, 46

Disassembling . . . . . . . . . . . . . . . . . . 15

E

EC Declaration of Conformity . . . . . . . . . 5

Electrical failure . . . . . . . . . . . . . . . . . 16

Electrical hazard . . . . . . . . . . . . . . 6, 7, 16

Electric motor . . . .6, 7, 8, 9, 10, 11, 12, 15, 16

>> . . . . . . . . . . . . .21, 32, 44, 46, 47, 49, 65

>> . . . . . . . . . . . . .66, 67, 68, 69, 70, 77, 78

Electrics . . . . . . . . . . . . . . . . . . . . . . 12

F

Failure . . . . . . . . . . . . . . . . . 9, 16, 50, 75

Filter condition . . . . . . . . . . . . . . . . . . 13

Filtration . . . . . . . 9, 12, 14, 16, 32, 34, 40, 44

Fish bone chart . . . . . . . . . . . . . . . . . . 65

Flow . . . . . 7, 9, 13, 14, 20, 22, 23, 24, 25, 26

>> . . . . . . . . 27, 28, 29, 30, 31, 33, 34, 43, 47

>> . . . . . . . . 50, 65, 66, 67, 68, 69, 70, 71, 72

Flow curves . . . . . . . . . 26, 27, 28, 29, 30, 31

Fluid . . . . . . . 11, 12, 15, 16, 32, 46, 65, 67, 69

Flush . . . . . . . . . . . . . .8, 11, 43, 45, 46, 76

G

General information . . . . . . . . . . . . .7, 47

Guideline . . . . . . . . . . . . . . . . .40, 47, 63

H

Handling . . . . . . . . . . . . . . . . . . . 7, 9, 12

I

Initial start-up . . . . . . . . . . . . . . . . 8, 46

Inspection . . . . . . . . . . . . . 9, 14, 40, 45, 47

Installation . . 6, 7, 8, 11, 12, 14, 16, 21, 32, 50

>> . . . . . . . . . . . . . . . 51, 65, 66, 70, 75, 76

Instruction . . . . . . . 6, 7, 12, 32, 41, 69, 75, 76

Instrumentation . . . . . . . . . . . . . . . .6, 12

Introduction . . . . . . . . . . . . . . . . . .6, 20

M

Maintenance . . . . . . . . . .6, 7, 13, 14, 21, 32

>> . . . . . . . . . . . . . . . . . . . 40, 47, 50, 51

Mechanical failure . . . . . . . . . . . . . . . . 16

Mounting . . . . . . 8, 12, 13, 15, 16, 32, 35, 36

>> . . . . . . . . . . 37, 38, 39, 44, 45, 50, 66, 70

Motor requirements . . . . . . . . . . . . . . 31

N

Name plate . . . . . . . . . . . . 9, 11, 12, 13, 67

Noise . . . . . . .8, 14, 32, 33, 34, 43, 65, 69, 70

L

Leaking . . . . . . . . . . . . . . . . . . . . . . . 16

Lifting . . . . . . . . . . . . . 6, 9, 10, 12, 15, 50

Local regulations . . . . . 6, 7, 8, 11, 12, 16, 50

O

Open system design . . . . . . . . . . . . 11, 33

Operation . . . . . . 6, 7, 8, 9, 13, 14, 15, 16, 40

>> . . . . . . . . . . . . . . . . . 46, 47, 51, 67, 76

Operational conditions . . . . . . . . . . . 7, 16

P

Parts list . . . . . . . . . . . . . . . . . . . . . . 55

Piping . . . . . . . . . . . . . . . . . . 9, 11, 12, 16

Positioning . . . . . . . . . . . . . . . . . . . . 12

Preferred system design . . . . . . . . 7, 12, 43

Pre mounting . . . . . . . . . . . . . . . . . . . 12

Protection . . . . . . . . . . 6, 7, 8, 10, 43, 44, 46

R

Recommended service intervals . . . . . . 47

Relief valve . . . . . . . . . 12, 13, 14, 33, 34, 43

>> . . . . . . . . . . . . . . . . . . . 44, 46, 68, 74

Repair . . . . . . . . . . . . . . . . . .11, 15, 16, 51

Responsibility . . . . . . . . . . . . . . 6, 7, 8, 16

Return . . . . . . . . . . . . . . . . .10, 15, 47, 74

Rotation . . 8, 13, 45, 46, 50, 65, 66, 67, 69, 76

S

Safety . . . . . . . . . . . .6, 7, 8, 9, 12, 13, 14, 16

Safety valve . . . . . . . . . . . . . . . . 7, 43, 46

Scrapping criteria . . . . . . . . . . . . . . . . 16

Serial number . . . . . . . . . . . . . . . . . . . 4

Service . . . . . . 6, 7, 8, 9, 13, 14, 15, 21, 40, 47

Servicing . . . . . . . . . . . . . . . . . . . 6, 8, 14

Shut down . . . . . . . . . . . . . . . . . . . 14, 15

Signs of wear . . . . . . . . . . . . 47, 67, 68, 71

Sound pressure level . . . . . . . 22, 23, 24, 25

Space requirement . . . . . . . . . . . . . . . . 8

Spare part . . . . . . . . . . . . . . . . . . . . . 55

Start up . . 7, 8, 11, 12, 16, 33, 34, 43, 46, 69, 76

Storage . . . . . . . . . . . . . . . 9, 10, 15, 46, 50

Symbols . . . . . . . . . . . . . . . . . . . . . . . 6

System . . . . . . 6, 7, 8, 9, 11, 12, 13, 14, 15, 21

>> . . . . . . . . . . 32, 33, 34, 40, 43, 47, 51, 68

>> . . . . . . . . . . 69, 70, 73, 74, 75, 76, 77, 78

T

Table of Contents . . . . 2, 3, 18, 20, 42, 56, 64

Technical data . . . . . . . . . . . . . . . . 8, 22

Temperature . . . . 7, 11, 12, 13, 14, 16, 22, 23

>> . . . . . . . . . . 24, 25, 33, 34, 40, 43, 46, 47

>> . . . . . . . . . . . . . 50, 51, 65, 67, 76, 77, 78

Transportation . . . . . . . . . . . . . . . . . 6, 9

Trouble shooting . . . . . . . . . . . . . . 63, 73

V

Valve . . . . . . . . . 7, 11, 12, 13, 14, 16, 33, 34

>> . . . . . . . . . . . . 43, 44, 46, 68, 69, 74, 76

W

Warning . . . . . . . . . . . . 6, 9, 13, 46, 66, 69

Warranty . . . . . . . . . . . . . . . . . 6, 9, 15, 32

Danfoss A/S

High Pressure Pumps

DK-6430 Nordborg

Denmark

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice.

This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.

All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

80

180R9289 / IOM PAHT/PAHT G 256-308 pumps - v01 / 05.2013