Alfa Laval LKH Prime UltraPure Instruction manual

Instruction Manual

LKH Prime UltraPure Pump

ESE03177-EN8

Original manual

2023-04

Table of contents

The information herein is correct at the time of issue but may be subject to change without prior notice

1. Declarations of Conformity .................................................................

2. Safety ..........................................................................................

2.1. Important information .................................................................

2.2. Warning signs ...........................................................................

2.3. Safety precautions ......................................................................

4

3. Installation ....................................................................................

8

3.1. Unpacking/delivery ....................................................................

8

3.2. Installation ..............................................................................

9

3.3. Pre-check ................................................................................

16

3.4. Recycling information ..................................................................

18

6

6

6

7

4. Operation .....................................................................................

19

4.1. Operation/control ......................................................................

19

4.2. Trouble shooting .......................................................................

21

4.3. Recommended cleaning ...............................................................

22

5. Maintenance ..................................................................................

24

5.1. General maintemance ..................................................................

24

5.2. Cleaning procedure ....................................................................

26

5.3. Dismantling of pump/shaft seals ....................................................

27

5.4. Assembly of pump/single shaft seal .................................................

31

5.5. Assembly of pump/double mecanical shaft seal ...................................

35

5.6. Adjustment of shaft ....................................................................

39

6. Technical data ................................................................................

42

6.1. Technical data ..........................................................................

42

6.2. Relubrication intervals .................................................................

43

6.3. Torque specifications ..................................................................

43

6.4. Weight (kg) ..............................................................................

43

6.5. Noise emission ..........................................................................

44

7. Part list and service kits .....................................................................

45

7.1. LKH Prime UltraPure ....................................................................

45

7.2. LKH Prime UltraPure 20 - Product wetted parts ....................................

46

7.3. LKH Prime UltraPure 20 - Motor-dependent parts .................................

48

7.4. LKH Prime UltraPure 20 - Shaft seal .................................................

50

3

1 Declarations of Conformity

The Designated Company

Alfa Laval Kolding A/S, Albuen 31, DK-6000 Kolding, Denmark, +45 79 32 22 00

Company name, address and phone number

Hereby declare that

Pump

Designation

LKH Prime UP 10, LKH Prime UP 20

Type

Serial number from 10.000 to 1.000.000

Serial number from AAB000000001 to AAB999999999 is in conformity with the following directives with amendments:

- Machinery Directive 2006/42/EC

- RoHS EU Directive 2011/65/EU and amendments

The person authorised to compile the technical file is the signer of this document.

Global Product Quality Manager

Title

Kolding, Denmark

Place

2022–10–01

Date (YYYY-MM-DD)

Lars Kruse Andersen

This Declaration of Conformity replaces Declaration of Conformity dated 2020-06-01

Name

Signature

4

1 Declarations of Conformity

The Designated Company

Alfa Laval Kolding A/S, Albuen 31, DK-6000 Kolding, Denmark, +45 79 32 22 00

Company name, address and phone number

Hereby declare that

Pump

Designation

LKH Prime UP 10, LKH Prime UP 20

Type

Serial number from 10.000 to 1.000.000

Serial number from AAB000000001 to AAB999999999 is in conformity with the following directives with amendments:

- The Supply of Machinery (Safety) Regulations 2008

- The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment

Regulations 2012

Signed on behalf of: Alfa Laval Kolding A/S

Global Product Quality Manager

Title

Kolding, Denmark

Place

2022–10–01

Date (YYYY-MM-DD)

DoC Revison_01_102022

Lars Kruse Andersen

Name

Signature

5

2 Safety

This manual highlights unsafe practices and other important information.

Warnings are emphasised by means of special signs.

2.1

Important information

Indicates that special procedures must be followed to avoid serious personal injury.

CAUTION

Indicates that special procedures must be followed to avoid damage to the pump.

NOTE

Indicates important information to simplify or clarify procedures.

2.2

Warning signs

6

2 Safety

All warnings in the manual are summarised on this page.

Pay special attention to the instructions below in order to avoid severe personal injury and/or damage to the pump.

2.3

Safety precautions

Always use a lifting crane when handling the pump.

Always

Never run the pump when both the suction side and the pressure side are blocked.

Never

Always handle lye and acid with great care.

Never

The Alfa Laval pump selection program can be acquired from your local Alfa Laval sales company.

Never service the pump when it is hot.

Never

Remember to perform lubrication in accordance with the information plate/label on the motor.

Never lift or elevate in any way other than that described in this manual

Always

Always transport the pump in an upright position

Always

7

3 Installation

Read the instructions carefully and pay special attention to the warnings! Always check the pump before operation.

-See pre-use check in section 3.3 Pre-use check

The pump is heavy.

Alfa Laval therefore recommends the use of a lifting crane when handling the pump.

3.1

Unpacking/delivery

1. Complete pump

2. Delivery note

3. Motor instructions

Always use a lifting crane when handling the pump (see technical data).

Alfa Laval cannot be held responsible for incorrect unpacking.

Be aware that certain pump configurations can tilt, and therefore cause injury to feet or fingers. The pump should be supported underneath the adapter, when not installed in the process line.

Remove any packing materials from the inlet and outlet.

Avoid damaging the inlet and outlet.

Avoid damaging the connections for flushing liquid, if supplied.

Inspect the pump for visible transport damage.

Always remove the shroud, if fitted, before lifting the pump.

8

3 Installation


- See pre-use check in section 3.3 Pre-use check

The pump is heavy.


3.2

Installation

(See chaper 6.1 Technical data)

authorised personnel. (See the motor instructions).

Alfa Laval cannot be held responsible for incorrect installation.

WARNING:

Alfa Laval recommends the installation of a lockable repair breaker. If the repair breaker is to be used as an emergency stop, the colours of the repair breaker must be red and yellow.

Ensure at least 0.5 m (1.6 ft) clearance around the pump.

The pump does not prevent back flow when intentionally or unintentionally stopped. If back flow may cause a hazardous situation to arise, precautions must be taken e.g. a check valve can be installed in the system to prevent hazardous situations.

Note:

The 3A standard requires minimum clearance between the lowest part of the base, pump, motor or drive and for the floor to be no less than 4 in. (100 mm)

Check that the flow direction is correct.

O: Outlet

I: Inlet

9

3 Installation



The pump is heavy.


1. Ensure that the pipelines are routed correctly.

2. Ensure that the connections are tight.

3. Remember seal rings self -surpported.

- Vibrations

- Thermal expansion of the tubes

- Excessive welding

- Overloading of the pipelines

Example of piping system self-supported.

10

3 Installation



The pump is heavy.


Ensure correct alignment of pump inlet and outlet with piping system.

Alignment can be done by adjusting the pump legs.

Centre of inlet and outlet to be aligned with centre of piping system.

11

3 Installation



The pump is heavy.


No gaps between connections on pump inlet and inlet pipe, and pump outlet and outlet pipe.

Angel between connections on pump inler and inlet pipe, pump outlet and outlet pipe not allowed.

12

3 Installation



The pump is heavy.


Ensure correct aligment of pump casing and pump backplate. Angle not allowed. Alignment can be done by adjusting the pmp legs.

Ensure stud bolts in casings are aligned with holes in backplate.

In case of shaft seal leakage, the media will drip from the slot in the bottom of the adaptor. In case of shaft seal leakage, Alfa Laval recommends putting a drip tray underneath the slot to collect the leakage.

13

3 Installation



The pump is heavy.


If pump is fitted with drain option;

Never short circuit. the drain connections as this will reduce the air release capacity.

Always use two drain valves.

To ensure optimal function of the selfpriming capacity,

LKH Prime must be installed in such a way that ensures liquid is in the pump on start-up e.g. with a swan neck design as illustrated.

Max running time when releasing air only should not exceed 15 min.

LKH Prime UP 10

LKH Prime UP 20

S min

200 mm

D min

1.5 m 2” pipe

14

3 Installation



The pump is heavy.


Installation guide lines

1. Suction considerations

Installation - Ensure the suction line is designed so the Prime UP pump is liquid filled at start up, eg. swan neck. (see table in Step 6)

- Design suction line with slope down toward the pump to avoid air entrapments

NPSH - Ensure NPSHa > NPSHr under all duty conditions including all temperatures

Air inclusions - Controlled start/stop of pump eg. Level Switch (LS)

- Do not start the LKH Prime UP before tank bottom is liquid filled

- Stop the LKH Prime UP during phase changes

2. General pump considerations

VFD - Minimum speed for effective air evacuation is 2800 RPM

Pump sizing

- Air evacuation ability improves with higher speed (Max speed 3600 RPM)

- The LKH Prime UP must be sized for the specific duty point one -to -one

3. Discharge considerations

Installation

Check valve

- Ensure minimum length of vertical pipe after the LKH Prime UP (see table in Step 6)

- Place check valve as far away from the pump as possible

- Replace check valve with automated valve if possible

Pos

1

2

3

4

5

Suction line

LKH Prime UP Pump

Discharge line

Check valve

Level switch

15

3 Installation

Read the instructions carefully and pay special attention to the warnings!

Check the direction of rotation of the impeller before operation.

- See the indication label on the pump.

3.3

Pre-check the direction of rotation.

pump casing is removed.

1. Remove adapter shields (22)

2. Loosen unions and remove recirculation pipe (56)

3. Remove clamp (57) and front cover (60)

4. Remove air screw (58) with a spanner. Counter hold with a screwdriver. (See also instruction in section 5.3)

5. Unscrew cap nuts (24). Remove washers (24a) and pump casing (29)

6. Remove impeller (27). (See also instruction in section

5.3)

1. Start and stop the motor momentarily.

2. Ensure that the direction of rotation of the stub shaft

(7) is anticlockwise as viewed from the inlet side.

Stub shaft

Fit and tighten the impeller (27).

16




1. Fit pump casing (29) and washers (24a). Fit and tighten cap nuts (24). Torque = 20Nm/15 lbf-ft

2. Fit air screw (58) and tighten with a spanner (Torque

= 20Nm (15 lbf-ft))

3. Fit front cover O-ring (59) and fit and align front cover

(60). Fit clamp and tighten screws (57) gently

4. Fit recirculations pipe (56), align front cover (60) and tighten unions

5. Tighten clamp screws (57)

6. Fit the apaptor shields (22)

3 Installation

17

3 Installation




3.4

Recycling information

- Packing material consists of wood, plastics, cardboard boxes and in some cases metal straps

- Wood and cardboard boxes can be reused, recycled or used for energy recovery

- Plastics should be recycled or burnt at a licensed waste incineration plant

- Metal straps should be sent for material recycling

- During maintenance, oil and wearing parts in the machine are replaced

- All metal parts should be sent for material recycling

- Worn or defective electronic parts should be sent to a licensed handler for material recycling

- Oil and all non-metal wearing parts must be disposed of in accordance with local regulations

- At the end of use, the equipment must be recycled according to relevant local regulations. In addition to the equipment itself, any hazardous residue from the process liquid must be taken into account and handled in the necessary way. When in doubt, or in the absence of local regulations, please contact your local Alfa

Laval sales company.

18


4.1

Operation/control

CAUTION

Alfa Laval cannot be held responsible for incorrect operation/control.

liquids or when sterilising.

4 Operation pressure side are blocked.

19

4 Operation


CAUTION

The shaft seal must not run dry.

CAUTION

Never

Double

1. Connect the inlet of the flushing liquid correctly.

(R1/8”)

2. Regulate the water supply correctly

O: Outlet

I: Inlet

Reduce the capacity and the power consumption by means of:

- Throttling the pressure side of the pump

- Reducing the impeller diameter

- Reducing the speed of the motor (when not releasing air)

* Throttling!

T max

= 70°C

P max

= 5 bar

(double mechanical seal)

20

4 Operation

Pay attention to possible faults.

Read the instructions carefully.

4.2

Trouble shooting

Read the maintenance instructions carefully before replacing worn parts.

Motor overloaded - Pumping of viscous liquids

- Pumping of high density liquids

- Low outlet pressure (counter pressure)

- Lamination of precipitates from the liquid

- Larger motor or smaller impeller

- Higher counter pressure

(throttling)

- Frequent cleaning

Cavitation:

- Damage

- Pressure reduction (sometimes to zero)

- Increase in the noise level

- Low inlet pressure

- High liquid temperature

- Increase the inlet pressure

- Reduce the liquid temperature

- Reduce the pressure drop before the pump

- Reduce speed

Leaking shaft seal - Running dry

- Incorrect rubber grade

- Abrasive particles in the liquid

Replace:

All wearing parts

If necessary:

- Change rubber grade

- Select stationary and rotating seal ring in silicon carbide/silicon carbide

Leaking O-ring seals

- Use of incorrect SiC/SiC single seal

Incorrect rubber grade

- Change to SiC/SiC seal marked

“LKH Prime”

Change rubber grade

No/little air release - Pump not properly primed

- Pump speed too low

- Ensure pump is primed

- Increase pump speed during air release

21

4 Operation

The pump is designed for cleaning in place (CIP). CIP = Cleaning In Place.


NaOH = Caustic Soda.

HNO

3

= Nitric acid.

4.3

Recommended cleaning

Always use rubber gloves!

Always use protective goggles!

1. 1% by weight NaOH at 70°C (158°F).

1 kg (2.2 lb)

NaOH

+ 100 l (26.4 gal) water

2.2 l (0.6 gal)

33% NaOH

+ 100 l (26.4 gal) water

2. 0.5% by weight HNO

3 at 70°C (158°F).

0.7 l (0.2 gal)

53% HNO

3

+ 100 l (26.4 gal) water

= Cleaning agent.

= Cleaning agent.

= Cleaning agent.

1. Avoid excessive concentration of the cleaning agent

⇒ Dispense gradually!

2. Adapt the cleaning flow to the process.

Sterilisation of milk/viscous liquids

⇒ Increase the cleaning flow!

agent.

NOTE

Cleaning agents must be stored/disposed of in accordance with current regulations/directives.

22

4 Operation

The pump is designed for cleaning in place (CIP). CIP = Cleaning In Place.


NaOH = Caustic Soda.

HNO

3

= Nitric acid.

NOTE:

If pumps are sterilised using steam, standard 3A requires the process system to be designed to automatically shut down if the product pressure in the system becomes less than that of the atmosphere and it cannot be started until the system is re-sterilised.

23

5 Maintenance

Maintain the pump with care. Read the instructions carefully and pay special attention to the warnings!

Always have spare shaft seals and rubber seals to hand.

See separate motor instructions.

Check the pump for smooth operation after service.

5.1

General maintemance

NOTE

All scrap must be stored//disposed of in accordance with current regulations/directives.

Atmospheric pressure required!

Fit the electrical connections correctly if they have been removed from the motor during service.

Pay special attention to the warnings!

Order service kits from the service kits list

(See section 7).

Contact your local Alfa Laval sales company.

24

5 Maintenance





Motor bearings

Preventive maintenance

(one-shift) complete shaft seal

Replace when replacing the shaft seal

Maintenance after leakage

(leakage normally starts slowly)


Planned maintenance - Regular inspection for leakage and smooth operation

- Keep a record of the pump

- Use the statistics for inspection planning


Yearly inspection is recommended

- Replace complete bearing if worn

- Ensure that the bearing is axially locked (see motor instructions)

Complete shaft seal

Lubrication

Lubricate the O-rings with silicone grease or silicone oil

Silicone grease or silicone oil

Pre -use

Fit the electrical connections correctly if they have been removed from the motor during servicing.

(See pre-use check in section 3.2 Installation).

1. Start and stop the motor momentarily

2. Ensure that the pump operates smoothly.

25

5 Maintenance





5.2

Cleaning procedure

.

5

.

6

Cleaning procedure

1 Remove air screw (58) as per section 5.3 of the Service manual.

.

2

.

3

.

4

Submerge and soak the air screw for 5 minutes in COP tank with 2% caustic wash.

Scrub the blind tapped air screw hole vigorously by plunging a clean 1/2” diameter sanitary bristle pipe brush in and out of the hole for two minutes while submerged.

Soak air screw in acid sanitiser for 5 minutes, then scrub blind tapped hole as described in step 3 above.

Rinse well with clean water and blow-dry blind tapped hole with clean air.

Swab test the inside of the tapped hole to determine cleanliness.

.

7 Should the swab test fail, repeat steps 2 to 6 above until the swab test is passed.

.

Should swab testing continue to fail, or time is of the essence, install a new (spare) air shaft.

.

Cleaning procedure

1 Remove shaft (7) as per section 5.3 of the Service manual.

.

2

.

3

.

4

Remove stud bolt (7a) from shaft.

Submerge and soak the shaft for 5 minutes in COP tank with 2% caustic wash.

5

Scrub the blind tapped shaft hole vigorously by plunging a clean 1/2” diameter sanitary bristle pipe brush in and out of the hole for two minutes while submerged.

Soak shaft in acid sanitiser for 5 minutes, then scrub blind tapped hole as described in step 4 above.

.

6

.

7

.

8

Rinse well with clean water and blow-dry blind tapped hole with clean air.

Swab test the inside of the tapped hole to determine cleanliness.

After approved swab test, assemble stud bolt (7a) in shaft (7) with tightening torque 65Nm

.

9 Shoud the swab test fail, repeat steps 3 to 7 above until the swab test is

.

passed.

Should swab testing continue to fail, or time is of the essence, install a new (spare) shaft.

26

Read the instructions carefully. The items refer to the parts list and service kits section.

Handle scrap correctly.

: Relates to the shaft seal.

5 Maintenance

5.3

Dismantling of pump/shaft seals

Remove screw (23) and safety guard (22)

1. Loosen unions and remove recirculation pipe (56)

2. Remove clamp (57) and front cover (60)

1. Remove air screw (58) with a spanner. Counter hold with a screwdriver on pump shaft (7)

2. Unscrew cap nuts (24). Remove washers (24a) and pump casing (29)

27

5 Maintenance




Unscrew tubes (42) using a spanner.

1. Remove impeller (27). If necessary, loosen the impeller by tapping gently on the impeller vanes

2. Remove the O-ring (38) from the impeller

* Counter hold with a screwdriver

1. Remove the O-ring (26) from the back plate (25)

2. Unscrew the nuts (20) and remove the washers (21) and back plate (25)

1. Remove the stationary seal ring (11)

2. Remove the O-ring (12) from the back plate (25)

* Use the tool supplied

** Left-hand thread!

28




5 Maintenance

1. Remove screws (41) and seal housing (40a)

2. Remove rotating seal rings (14) and drive ring (52) from spring (13)

3. Remove O-rings (15) from rotating seal rings (14)

1. Remove stationary seal ring (51) from seal housing

(40a)

2. Remove O-ring (50) from stationary seal ring (51)

3. Remove O-ring (44) from seal housing (40a)

1. Remove the complete shaft seal from stub shaft (7)

2. Remove spring (13) and rotating seal ring (14) from the drive ring (10)

1. Remove shroud (2)

2. Unscrew nuts (18) and remove washers (19), screws

(17) and adapter (16)

29

5 Maintenance




1. Slide off stub shaft (7) together with compression rings

(5a, 5b)

30




5 Maintenance

5.4

Assembly of pump/single shaft seal

1. Remove spring (13)

Make sure that O-ring (15) has maximum clearance from the sealing surface.

1. Refit spring (13) on rotating seal ring (14)

2. Fit the spring and the rotating seal ring on drive ring

(10)

Ensure that the driver on the drive ring is inserted into the notch in the rotating seal ring.

Fit the complete shaft seal on the stub shaft (7).

Make sure that the Connex pin (8) on the stub shaft is inserted into the notch in the drive ring (10).

31

5 Maintenance




1. Fit O-ring (12) on stationary seal ring (11) and lubricate

2. Screw the stationary seal ring into the back plate (25)

Only tighten by hand to avoid deforming the stationary seal ring.

(Max. 7 Nm/5 lbf-ft)

Use the tool supplied

Left-hand thread!

1. Clean the sealing surfaces with contact cleaner before fitting the back plate (25)

2. Carefully guide the back plate onto the adapter (16)

3. Fit washers (21) and nuts (20) the static seal face must be marked “LKH

Prime”.

Lubricate O-ring (26) and slide it onto back plate (25).

32




5 Maintenance

1. Lubricate O-ring (38) and fit into impeller (37)

2. Lubricate impeller hub with silicone grease or oil

3. Screw the impeller onto the stub shaft (7)


2. Adjust pump casing (29) to correct position.

3. Tighten nuts (20) for back plate (25), according to torque values in chapter 6 Technical data


= 20Nm (15 lbf-ft))


(60)

2. Fit clamp and tighten screws (57) gently

3. Fit recirculation pipe (56), align front cover (60) and tighten unions


33

5 Maintenance




Fit safety guards (22) and screw (23), then tighten.

If pump is not supplied with flush connections, the holes in the apapter will be covered by the guard.

34


Lubricate the rubber seals before fitting them.


5 Maintenance

5.5

Assembly of pump/double mecanical shaft seal

1. Fit O-rings (15) in rotating seal rings (14)

2. Fit spring (13) onto one of the rotating seal rings (14) and place the drive ring (52) in between

1. Fit the second rotating ring (14) on the other end of the spring

2. Place the parts on the stationary seal ring fitted in the back plate (25)

NOTE

Ensure that both drive pins on the drive ring are inserted into the notches in the rotating seal rings.

1. Lubricate O-ring (44) and slide onto seal housing (40a)

2. Lubricate O-ring (50) and fit on stationary seal ring

(51), then fit this in the seal housing

35

5 Maintenance




1. Fit O-ring (12) on stationary seal ring (11) and lubricate

2. Screw the stationary seal ring into the back plate (25)

Only tighten by hand to avoid deforming the stationary seal ring.

(Max. 7 Nm/5 lbf-ft)

Use the tool supplied

Left-hand thread!

1. Clean the sealing surfaces with contact cleaner

2. Fit seal housing (40a) onto the back plate (25) and tighten screws (41) the static seal face must be marked “LKH

Prime”.

1. To enable the fitting of the back plate (25) with the shaft seal, remove the Connex pin (8) from the stub shaft (7) (if fitted)

2. Carefully guide the back plate onto adaptor (16)

3. Fit washers (21) and nuts (20)

36




5 Maintenance

Lubricate O-ring (26) and slide it onto back plate (25)

1. Lubricate the O-ring (38) and fit it into the impeller (37)

2. Lubricate the impeller hub with silicone grease or oil

3. Screw impeller (27) onto stub shaft (7)

1. Screw tubes (42) into seal housing (40a).

2. Tighten with a spanner.


2. Adjust pump casing (29) to correct position

3. Tighten nuts (20) for back plate (25), according to torque values in chapter 6, Technical data


= 20Nm (15 lbf-ft))

37

5 Maintenance





(60)

2. Fit clamp and tighten screws (57) gently

3. Fit recirculations pipe (56), align front cover (60) and tighten unions


Fit safety guard (22) and screw (23), then tighten.

If pump is not supplied with flush connections, the holes in the adapter will be covered by the guard.

38




5 Maintenance

5.6

Adjustment of shaft

1. Loosen screws (6)

2. Pull off stub shaft (7) together with compression rings

(5a, 5b)

1. Push stub shaft (7) together with compression rings

(5a, 5b) onto the motor shaft

2. Check that the clearance between the end of the stub shaft and the motor flange is 10-20 mm (0.39 - 0.78

inch)

* 10-20 mm

(0.39-0.78 inch)

1. Tighten screws (6) gently and evenly

2. Ensure that the stub shaft (7) can be moved on the motor shaft

39

5 Maintenance




1. Fit shroud (2)

2. Fit adapter (16), screws (17), washers (19) and nuts (18) and tighten

Fit drive ring (52) on stub shaft (7)

2. Fit back plate (25), washers (21) and nuts (20), then tighten

1. Fit impeller (27) on stub shaft (7)

2. Ensure that the clearance between the impeller and the back plate (25) is correct: 0.5 mm (0.02inch) for LKH

Prime UltraPure 10 and 20.

3. Tighten screws (6) evenly until the stub shaft (7) cannot move on the motor shaft

LKH Prime UltraPure 10 and 20 = 0,5mm (0,02inch)

40




5 Maintenance

Counter hold with a screwdriver

1. Remove impeller (27), back plate (25) and drive ring

(52).

2. Tighten screws (6) evenly to 15 Nm (11 lbf-ft).

3. Pump is assembled according to section 5.4 for single shaft seal and section 5.5 for double mechanical seal.

* 15Nm

(11 lbf-ft)

41

6 Technical data

It is important to observe the technical data during installation, operation and maintenance.

Inform personnel about the technical data.

6.1

Technical data

The LKH pump is a highly efficient and econominal centrifugal pump, which meets the requirements of sanitary and gentle product treatment and chemical resistance. LKH Prime UltraPure is available in the following sizes

-20. The instruction manual is part of the delivery: Read the instructions carefully. The pump is very heavy, which is why Alfa Laval recommends the use of a lifting crane when handling the pump.

Max. inlet pressure

Temperature range

Max. speed:

Min. speed, pumping product (no air):

Min. speed, releasing air:

500 kPa (5 bar) (72.5 psi )

-10 o C to +140 o C (EPDM) (14 to 284 o F )

3600 rpm

900RPM

2800RPM (full speed 2 poled motor, 50Hz)

Product wetted steel parts

Other steel parts

Finish

Product wetted seals

Other O-rings

Alternative seals

AISI 316L

Stainless steel

Standard blasted

EPDM (standard)

EPDM (standard)

Nitrile (NBR) and fluorinated rubber (FPM)

Seal types

Max. temperature flush medium

Max. water pressure (DMS)

Water consumption (double mechanical seal)

Material, stationary seal ring

Material, rotating seal ring

Material, O-rings

Alternative material, O-rings

Air release time (no medium supply)

External single or double mechanical seal

70 o C

Normally atmospheric (max. 5 bar) (max. 72.5 psi)

0.25-0.5 l/min. (0.07-0.13 gl )

Acid-resistant steel with sealing surface of silicon carbide

Carbon (standard) or silicon carbide

EPDM (standard)

Nitrile (NBR) and fluorinated rubber (FPM).

Max 15 min

Foot-flanged motor according to IEC metric or NEMA standard, 2 poles = 3000/3600 rpm. at 50/60 Hz IP55, insulation class F

For further information, see PD sheet.

42

6 Technical data



6.2

Relubrication intervals

For recommended grease types and general maintenance follow the recommendations in the motor instruction manual.

For relubrication intervals see motor name plate.

For further information contact your local Alfa Laval Technical Support.

6.3

Torque specifications

The table below specifies the tightening torques for the screws, bolts and nuts in this pump.

Always use the following torques if no other values are stated. This can be a matter of personal safety.

M8

M10

M12

M14

13mm/0.51”

17mm/0.67”

19mm/0.75”

22mm/0.87”

20

40

67

110

Ibf -ft

15

30

49

81

6.4

Weight (kg)

10

20

40

65 80

80

85

85 size

132

110

110

120

180

185 220

43

6 Technical data



6.5

Noise emission

LKH-114

LKH-122

LKH-123

LKH-124

SolidC-1

SolidC-2

SolidC-3

SolidC-4

MR-166

MR-185

MR-200

MR-300

GM

FM-OS

LKH-5

LKH-10

LKH-15

LKH-20

LKH-25

LKH-35

LKH-40

LKH-45

LKH-50

LKH-60

LKH-70

LKH-75

LKH-85

LKH-90

LKH Prime 10

LKH Prime 20

LKH-112

LKH-113

70

69

68

75

75

69

74

77

80

68

75

77

88

79

86

70

74

71

75

70

60

69

72

82

81

82

54

61

72

73

72

76

The above LKH noise levels are the same for LKHPF, LKHI, LKH UltraPure, LKH Evap and LKHex.

The above LKH Prime is the same for LKH Prime UltraPure.

The above SolidC noise levels are the same for SolidC UltraPure.

The noise measurements have been carried out with the original motor and shroud, approximately at the Best Efficiency

Point (BEP) with water at ambient temperature and at 50Hz.

Often the noise level generated by the flow through the process system (eg. valves, pipes, tanks etc.) is much higher than that generated by the pump itself. Therefore it is important to consider the noise level from the whole system and take the necessary precautions with regard to personal safety, if required.

44

The drawing shows the LKH Prime UltraPure pump.

7.1

LKH Prime UltraPure

7 Part list and service kits

LKH Prime UltraPure

US legs are different to those shown. For further information, see US spare parts.

Only used for 3 kW

Fitting of legs

Fitting of back plate

Single shaft seal Double mechanical shaft seal

45



7.2

LKH Prime UltraPure 20 - Product wetted parts

46

Product wetted non-metallic parts

Product wetted metallic parts


Pos.

20

21

24

24a

25

26 ♦ �

28

29

37

38 ♦ �

55

♦ �

56

57

58

59 ♦ �

60

Qty

2

1

1

1

1

1

6

1

1

1

6

1

1

1

2

6

Denomination

Nut

Washer

Cap nut

Washer

Backplate compl

Pump casing O-ring

Bolt

Connections and drain

Impeller

O-ring impeller

O-ring

Recirculation pipe

Clamp set

Air screw

O-ring

Ferrule Tri-clamp


47



7.3

LKH Prime UltraPure 20 - Motor-dependent parts

48




Pos.

18

19

22

23

30a

30b

31

32

33

34

35

35a

39

46

5b

6

6a

7

7a

8

1

2

3

5a

9

16

17

Qty

1

1

4

1

1

4

4

4

4

4

4

4

4

1

6

6

1

1

1

1

1

4

1

1

1

4

4

Denomination

Motor ABB

Shroud

Screw

Compression ring

Compression ring

Screw

Washer

Shaft

Stud bolt

Connex pin

Retaining ring

Adapter

Screw for adapter

Nut for adapter

Washer for adapter

Safety guard set

Screw for safety guard

Support bar

Support bar

Legs

Screw

Nut

Spring washer

Screw

Washer

Nut

Distance sleeve


49



7.4

LKH Prime UltraPure 20 - Shaft seal

50





Pos.

10

11

12

13

14

15

40a

41

42

44

50

51

52

♦

�

Qty

1

1

2

1

1

2

1

1

1

1

1

1

1

1

Denomination

Tool complete

Single shaft seal

Double mechanical shaft seal

Drive ring

Stationary seal ring

O-ring

Spring

Rotating seal ring

O-ring

Seal housing

Screw for seal housing

Fittings

O-ring for seal housing

O-ring

Sec. stationary seal ring

Drive ring

♦

♦

�

�

Note: All service kits are as standard delivered with Q-doc, including 3.1 certification on product wetted steel parts and declarations of conformity.

Parts marked with ♦ � are included in the service kits.

Conversion kit single to double mechanical shaft seal : Please order double mechanical service kit + pos. 40a + 41 + 42.

Recommended spare parts: Service kits.

(900689/4)

51

Contact details for all countries are continually updated on our website.

Please visit www.alfalaval.com to access the information directly.

© Alfa Laval Corporate AB

This document and its contents is owned by Alfa Laval Corporate AB and protected by laws governing intellectual property and thereto related rights. It is the responsibility of the user of this document to comply with all applicable intellectual property laws. Without limiting any rights related to this document, no part of this document may be copied, reproduced or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the expressed permission of Alfa Laval Corporate AB. Alfa Laval Corporate AB will enforce its rights related to this document to the fullest extent of the law, including the seeking of criminal prosecution.

Alfa Laval LKH Prime UltraPure Instruction manual

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