!

!

5. Operation and maintenance

5.1 Pressure regulators have always to be protected against damage (conduct visual inspection in regular intervals).

5.2 The adjustment of the relief valve (4) may not be changed!

5.3 Pay attention to the condition of seals, sealing surfaces and pressure gauges.

5.4 In case of malfunctions, e.g. increase in the outlet pressure at tapping = 0, in case of leakage against atmosphere, defect in pressure gauge or in case of shut down of the drain valve, make the pressure regulator non-operational and close the gas cylinder valve immediately.

!

6. Shut-down

6.1 To make longer work interruptions or to end the work:

Close the gas cylinder valve (1). By releasing the hand knob (6) the cylinder pressure regulator will depressurized.

6.2 Note that the pressure gauges (3) and (5) display zero before diassembling.

7. Repair

7.1 Repairs may only be carried out in authorized repair workshops by expert persons.

7.2 Only original spare parts must be used. The materials have been adapted to the gas type in each instance. So always specifiy the gas type

7.3 In case of independent repairs, the use of non-original spare parts or changes on the side of the user or a third party without the approval of the manufacturer, any form of liability for resulting damages will expire as well as the manufacturers warranty.

7.4 After being repaired, the pressure regulator must be checked with respect to proper function, leak-tightness and cleanliness of the gas-wetted surfaces.When

the system is used again, a sufficient purging operation must be carried out first.

GES_FM61-FM62 Edition 0910

Subject to alteration without prior notice

© Messer Cutting & Welding GmbH

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Instructions for use

FM61-Single stage

FM62- Two stage

Cylinder pressure regulators

Contents

page

1. Application

1.1 Designated use

1.2 Non-designated use

1.3 Technical data

2. Safety instruction

3. Labelling

4. Start-up 4

5. Operation and maintenance 4

2

3

6. Shut-down

7. Repair

4

4

1

1

2

FM 61

FM 62

spectro lab

1. Application

1.1 Designated use

Use with pressure gas cylinders for compressed high purity gases, gases dissolved under pressure and liquid gases to reduce the cylinder pressure and maintain an as constant as possible outlet pressure.

!

!

!

1.2 Non-designated use

Do not use pressure regulator for gases in the liquid phase.

Do not use for unsuitable gas types or corrosive gases.

Do not use at temperatures below -30°C or above +60°C.

1.3 Technical data

max. 200/300 bar

Flow rate Q:

Cylinder connection:

Outlet connector:

50/100 bar see flow curves

Gas type specific

1/4”-18 NPT-F

Relief valve connector: 1/8”-27 NPT-F

Leak rate:

-8

10 mbarl/s He

Materials:

Body: chrome-plated brass

Diaphragms: SS 1.4310 (SS 301)

Valve seat: PA11 or EPDM, depend. on gas type

Piston (P >20 bar) :brass

Weight: 1,8 kg (FM61)

2,1 kg (FM62)

The system has to be used according to these instructions for use and especially the safety instructions.

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The pressure regulators

FM 61 and FM 62 are manufactured in confirmation with the latest norm

DIN/EN/ISO 2503.

For special versions, appropriate consideration of this standard has been made.

For other gas types, this flow rate will be multiplied by the following factors:

Oxygen

Nitrogen

Hydrogen

0,95

1,02

3,81

10

8

6

4

2

0

4

2

0

2. Safety instructions

0,2 0,3 0,5 1 2 3 4 5 10 20

0,2 0,3 0,5 1

3

Flow rate Q in m /h Air

2 3 4 5 10

!

!

!

!

!

!

to the demands of the exsiting standards and regulations.

2.3 Changes or modifications are not allowed to be made to the pressure regulator without the prior consent of the manufacturer.

2.4 The result of improper handling and improper use as intended can involve risks for the user and other persons as well as damage to the device.

2.5 The equipment must be operated by suitable trained personnel only.

2.6 Regulations to be adhered to:

- BGV A1 (VBG 1), “General specifications”

- BGV B6 (VBG 61), “Gases"

- BGV B7 (VBG 62), “Oxygen”

- Guidelines for Laboratories (Zh 1/119)

2.8

Special attention has to be paid to the country specific laws,regulations and procedures concerning the use of this type of equipment.

2.7 Use only for gas types the pressure regulator is labelled for (see item 3).

In case of flammable gases, safe gas discharge from the relief valve (4) must be ensured. Use transition piece 1/8-NPT/6 pipe (art. no. 0291677).

2.9 Do not use at temperatures below -30°C or above +60°C.

2.10 The valve has always to be opened slowly!

2.11 All parts coming into contact with oxygen must be kept in oil-free and grease-free condition.

Fire or explosion hazard!

2.12 Smoking or open fire (e.g. candles) in the vicinity of the gas supply system is strictly prohibited.

Fire and explosion hazard!

2.13 Protect gas cylinders against falling.

2.14

No adapters must be used between the gas cylinder valve and the pressure regulator.

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3. Labelling

1 2 3

Nameplate

FM 61- O

P1: 200 bar P2: 10 bar

717. …

1195

4 5 6

1 FM 61- single stage

FM 62- two stage

2 Gas type

3 Article No

4 Max. inlet pressure

5 Max. outlet pressure

6 Date of manufacture

Table - Gas labelling

Gastype

Oxygen

Hydrogen mixture

Compressed-air

Nitrogen noble gas

Index letter

O

H

D

N

The rear side of the pressure regulator

K Inspection stamp

confirming successful

test pass

4. Start-up

!

4.1 Before starting read the specifications in this user instruction and observe them while working.

4.2 Check, that the gas cylinder valve thread is clean and not damaged (blow through if nessesary).

If damaged, the cylinder pressure regulator should not be connected.

1

2 3 4 5

Outlet

1/4”- 18 NPT

Female

1 Cylinder valve to DIN

477 or the relevant national standard

2.

Regulator connection to

DIN 477 or the relevent national standard

3.

High-pressure gauge

4.

Relief valve

5.

Low-pressure gauge

6.

Hand knob

6

4.3 Connect the pressure regulator to the closed gas cylinder valve (1). Tighten the gas-tight without using any tool.

4.4 Carry out the connections between the cylinder pressure regulator and the point of use. Never allow cylinder pressure regulator to regulate into the open atmosphere.

Wind a PTFE tape (Art. No. 0321422) clockwise around the NPT-fittings (5 to

10 turns). In case of flammable and toxic gases, attach a relief line to the relief valve (4) (1/8 NPT) and ensure a safety gas discharge. Check all connections for leaks.

4.5 Release the pressure regulator spring with the hand knob (6) - open the cylinder valve slowly (1) (High pressure gauge 3 indicates the cylinder pressure), adjust the required outlet pressure with the hand knob (6). Correct the pressure setting in case of a decrease of pressure.

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