ESAB R-502 User manual

Brand: ESAB

Model: R-502

Type: User manual

This manual is also suitable for

OPERATING INSTRUCTIONS for

F-11-273-N

September, 1997

R-502, R-5007, R-5008

REGULATOR/FLOWMETERS

Regulator Gas Service & Inlet Outlet

Calibrated Flow Range, Connection, Connection

Model Part No. Construction cfh (L/min) CGA No. CGA No.

R-502 998846 Two-Stage Argon: 10 - 70 (5 - 33) 580

R-502-FM-680 19018 Two-Stage Helium 20 - 220 (0 - 103) 680 032

C-25*: 10 - 65 (5 - 31) (5/8 ¾18),

R-5007 998124 Single-Stage Nitrogen: 10 - 80 (5 - 38) 580 R.H. Fem.)

R-5008 998125 Single-Stage Carbon Dioxide: 10 - 85 (5 - 40) 320

*75% Argon - 25% CO

Mixture

TO CONNECT

1. Open the cylinder valve slightly, for an instant, to

blow out any dust or dirt that may have collected in

the valve outlet. Be sure to keep your face away

from the valve outlet to protect your eyes.

2. Attach the regulator to the cylinder valve, and

tighten the connection nut with a wrench. (Do not

use the flowmeter tube as a handle attaching the

regulator.)

3. Make sure that the flow control valve on the flow-

meter is closed.

4. Open the cylinder valve SLOWLY.

5. Attach hose to the flowmeter outlet and to the equip-

ment with which the gas is to be used. Tighten the

connecting nuts with a wrench.

TO REGULATE FLOW

Flow is controlled by adjusting the flowmeter valve un-

til the desired flow is indicated by the ball float in the

flowmeter tube. Always take the reading across the TOP

of the ball. The outer flowmeter tube (square) can be

rotated by hand to bring the desired scale into position

for convenient reading. Scales for argon, helium, car-

bon dioxide, nitrogen, and C-25 mixture (75 per cent

argon, 25 per cent carbon dioxide) are provided. For

other gas mixtures, consult your gas supplier for the

conversion factor to apply to the reading indicated on

one of the scales. All scales indicate flow in terms of

cubic feet per hour (cfh). The flow readings are accu-

rate within +/- 5% of the maximum calibrated scale

reading for each gas. To convert to liters per minute

(L/min) multiply scale reading by 0.47.

Be sure this information reaches the operator.

You can get extra copies through your supplier.

These INSTRUCTIONS are for experienced operators. If you are not fully familiar with the principles of operation

and safe practices for arc welding equipment, we urge you to read our booklet, Precautions and Safe Practices

for Arc Welding, Cutting, and Gouging, Form 52-529. Do NOT permit untrained persons to install, operate, or

maintain this equipment. Do NOT attempt to install or operate this equipment until you have read and fully under-

stand these instructions. If you do not fully understand these instructions, contact your supplier.

TO STOP WORK:

When work is to be stopped for a half-hour or more, or

before disconnecting the regulator from a cylinder, do

the following:

1. Close the cylinder valve.

2. Open flowmeter valve and valve downstream al-

lowing the trapped gas to flow out.

3. When the gauge and ball float drop to zero, close

the flowmeter valve.

INLET MAINTENANCE:

This regulator is equipped with a porous metal inlet

filter, P/N 71Z33, pressed into the regulator inlet nipple.

No regulator should be connected to a cylinder valve

unless it contains this filter. You can replace the filter if

you have reason to do so. To remove a filter, insert a

No. 1 EZY-OUT or a No. 6 wood screw (about 2-in.

long) into the filter and pull it out. Press the new filter

into the nipple with a 1/4-in. round metal rod.

REPAIR SERVICE

Regulators in need of repair should be returned to your

ESAB welding distributor or to ESAB Remanufacturing

Center, Ebenezer Road, Florence, SC.

If you have your own properly equipped and staffed

repair facility, a repair parts booklet for this regulator is

available on request to your distributor. Request F-14-

353.

NOTE: Safety release device equipped on oxygen

and inert gas regulators is designed for regu-

lator protection; not for hose or equipment

downstream. If gas escapes through the safety

release device, immediately close cylinder

valve, and then remove regulator from service

for repair.

F-11-273-N 9/97 3M Printed in U.S.A.

ESAB R-502 User manual

Brand: ESAB

Model: R-502

Type: User manual

This manual is also suitable for

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ESAB R-502 User manual

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