! Caution: Do not stand in front or behind a regulator when opening cylinder valve (1). Acetylene cylinder valves should be opened a maximum of one full turn.

5.12 Using adjustment handle (6) for adjusting regulator delivery gas flow rate as required for your application.

5.13 Open the inlet valve slightly on the consumer appliance. If the gas flow rate falls, correct the flow rate setting with the adjustment handle (6).

6. SWITCHING OFF 6.1 Close the cylinder valve (1). 6.2 Open the valve on the downstream equipment to release all pressure from the system. 6.3 Close the valve on the downstream equipment after system has been released. 6.4 Turn adjusting handle (6) counter clockwise to release tension on adjusting spring. 6.5 After a few minutes, check the pressure gauges (4) and the flow-gauge (5) on the flow-gauge

regulator to ensure that the cylinder valve (1) has been closed completely. 6.6 Before taking off the flow-gauge regulator make sure both gauges (4 and 5) show zero. 7. OPERATION AND MAINTENANCE 7.1 Make sure that all seals, sealing surfaces and gauges are undamaged. 7.2 The relief valve’s setting shall not be altered. 7.3 In case of malfunctions, such as an increase in the line pressure while tapping, leakage into the

atmosphere, a defective pressure gauge or flow gauge or if the relief valve opens, immediately close the cylinder valve (1) and put the flow-gauge regulator out of operation.

8. REPAIR 8.1 Repairs shall only be carried out by trained and qualified persons in authorized repair workshops. 8.2 Only original spare parts may be used. The materials used has to correspond to the gas type to be

processed. Therefore always specify the gas type. 8.3 After a repair the entire flow-gauge regulator has to be checked. 8.4 In case of repairs carried out by the user or third parties without authorization by the manufacturer or

if parts other than original spare parts are used, any form of liability for resulting damage or injury will be void and the manufacturer’s warranty will expire.

9. STATEMENT OF USER RESPONSIBILITIES The service life of apparatus can be infinite when properly installed, operated and maintained. Improper use and adverse conditions will effect the equipment service life. This equipment should be checked periodically and replaced as necessary for continued safe and reliable performance. The use of defective equipment or not in accordance with the above instructions may be dangerous to personal or result in property damage

CONTENTS Page Page 1. Configurations 1 6. Switching off 4 2. Standards 2 7. Operating and maintenance 4 3. Application 2 8. Repair 4 4. Safety instructions 2 9. Statement of responsibility 4 5. Set up and operating guide 3

1. CONFIGURATIONS Part No. Type designation Flow Gas 394-000850-00000 DMDIN TN 200B AR/MIX 16L

16 l/min Ar / CO2

394-000851-00000 DMR TN 200B AR/MIX 16L 394-000852-00000 DMBS TN 200B AR/MIX 16L 394-000853-00000 DMBS TN 200B AR/MIX 16L TE 394-000854-00000 DMSK TN 200B AR/MIX 16L 394-000855-00000 DMF TN 200B AR/MIX 16L 394-000856-00000 DME TN 200B AR/MIX 16L 394-000857-00000 DMI TN 200B AR/MIX 16L 394-000858-00000 DMAS TN 200B AR/MIX 16L

2. STANDARTS

Gas Gas Inlet Connection Type Code DIN BSP CGA NFE AS

Arg./CO2 X W21,8x1/14“-RH(F)

G 5/8“-RH(M) 0,960“x1/14“-RH(M)

W21,7x1/14“-RH(F)

G 5/8“-RH(M)

Gas Gas Outlet Connection Type Code /DIN BSP CGA NFE AS

Arg./CO2 X G 1/4-RH(M) G 3/8-RH(M) 9/16“NF-RH(M) G 1/4-RH(M) 5/8 UNF-RH(M)

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Operating instructions Single stage pressure regulators for gas cylinder up to 200 bar

Series LFG, BFG with flow-gauge

Type LFG Type BSFG

Edition 04/15

© EWM HIGHTEC WELDING GmbH Dr. Günter-Henle-Straße 8, D-56271 Mündersbach

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3. APPLICATION Designated use: Use with gas cylinders for compressed gases and gases dissolved under pressure. Used to reduce a maximum cylinder pressure from up to 200 bar to the desired and constant outlet flow rate. The flow-gauge regulator for gas cylinders was designed in conformance with the latest standards DIN/EN, ISO 2503, BSP, CGA, NFE and AS. For special versions these standards are taken into account as appropriate. Only use according to this instruction manual and especially the safety instructions!

4. SAFETY INSTRUCTIONS Do not operate this apparatus unless you are trained in its proper use or are under competent supervision!

This flow-gauge regulator was designed according to the latest state of technology and meets the requirements of the existing standards.

All instructions marked ! are special safety instructions. ! Use only for gases for which is an identification marking present on the regulator. ! Always open the cylinder valve (1) slowly. In cases of incorrect handling or use for non-designated purposes, dangers for the user or other

persons may arise or the appliance may be damaged. No alterations or additions to the flow-gauge regulator shall be carried out without the approval of manufacturer.

No adapters shall be used between the cylinder valve (1) and the flow-gauge regulator. Secure cylinders to cart, wall or post to prevent them from falling. All cylinders should be used and stored in an upright position. Never drop, strike, or use a damaged cylinder. Examine hoses for cuts, burns or worn areas before each use. Also inspect fittings and replace any found damaged.

Do not repair hoses with friction tape. Always wear gloves made of leather or suitable substitutes. Always wear welding goggles with proper filter lenses. Due not wear torn or ragged clothes. Sparks can ignite ragged ends. Never use oxygen or fuel gas to blow soot or dirt of clothing.

Fire or explosion hazard! ! Smoking or open fires in the vicinity of the gas supply system is strictly prohibited. ! Never test for gas leaks with a flame. Use approved leak-detector product. ! Never use oil or grease on any inlet or outlet connections or cylinder valves. ! Upon completion of work, inspect area for any possible fire or smouldering material. ! Do not use at ambient temperatures below –30 °C or above +60 °C.

5. SET UP AND OPERATION GUIDE

5.1 Before work begins, the details in these operating instructions must be read, and they must be

observed when works is in progress. 5.2 Inspect the cylinder valve (1) for grease, oil or damaged threads. ! Caution: If oil or grease is found in the cylinder valve (1), discontinue use of cylinder

immediately and contact your gas supplier. 5.3 While standing to one side, rapidly open and close (“purge“) each cylinder valve (1) in a flame free

area. This clears the valve of any foreign material. ! Caution: Do not open the cylinder valve (1) any more than is necessary to clear the valve port

(2). Opening the valve (1) to much may cause the cylinder to tip over due to the force of the escaping gas. Do not stand in front of the valve port (2).

5.4 Confirm that the regulator has the correct pressure rating and gas service connection for the cylinder being used.

5.5 Make sure that the flow-gauge regulator connector (3), the thread and the connection seal (9) are clean and undamaged. If any of these parts are damaged the flow-gauge regulator shall not be connected.

! Caution: If oil or grease is found in the regulator inlet connection (3), discontinue use of regulator immediately and take it to a qualified repair station for cleaning.

5.6 Connect the flow-gauge regulator to the closed gas cylinder valve (1). Tighten it leak-tight with a spanner. Adjustment handle (6) shall face horizontal.

! Note: When using a flowmeter regulator, flowmeter must be positioned vertically in order to obtain accurate flow readings.

5.7 Connect hose to outlet connector (7) of the pressure regulator and to the consumer appliance. 5.8 Secure hoses with suitable hose clamps. 5.9 The flow-gauge regulator has a built-in flow restrictor. Check if your installation already has a

restrictor. If so, it shall be removed to ensure correct flow rate display. 5.10 Release the adjustment spring by turning the adjustment handle (6) counter clockwise ! Caution: Failure to release pressure on the adjustment spring before opening cylinder valve

(1) can damage diaphragm and render the regulator inoperable. 5.11 While standing with the cylinder valve (1) between you and the regulator, open cylinder valve (1)

slowly and check for leaks. Use only an approved leak detector solution. The high pressure gauge (4) shows the cylinder pressure.

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9

1 Cylinder valve 2 Cylinder valve port 3 Regulator inlet connection 4 High pressure gauge 5 Flow-gauge 6 Adjustment handle 7 Regulator outlet connection 8 Relief valve 9 Seal (depending on the connection

6

7

5 8 4 3 2 1

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