ESAB Plasma Torch Flow Measuring Kit Troubleshooting instruction

Brand: ESAB

Model: Plasma Torch Flow Measuring Kit

Type: Troubleshooting instruction

INSTRUCTIONS for

F-14-391-F

August, 2003

PLASMA TORCH

FLOW MEASURING KIT

P/N 19765 (0558000739)

This kit is designed for checking flows through plasma

cutting torches. Improper flows can cause short life of the

consumables (electrode, nozzle, etc.), poor starting, bad

cuts, or overheated torches.

The kit includes 50-500 cfh (23,6 - 235,9 l/m) Rotameter,

P/N 19768, cone adaptor, P/N 19766, and 2.0 ft

(50,8 mm) hose assembly, P/N 19767.

For measuring flows up to 40 cfh (18,0 l/m), order P/N

19043.

Measure one gas (plasma or cooling) at a time whenever

possible. When there is a single source for both plasma

and cooling gas, measure the total flow.

Instructions for measuring torch gas flows using the hand

held Rotameter.

High voltage can kill. Follow the steps below to as-

sure safe flow measurements.

1. Shut off input power to the power supply at the main

disconnect switch.

2. Unplug the torch switch cord from the unit.

3. Install a new nozzle and electrode in the torch.

4. Turn on the power at the main disconnect switch.

5. Place gas mode selector switch on unit in SET-UP

position.

6. Place power switch on unit to ON position.

7. The Rotameter must be held in the upright vertical

position to give a proper measurement. Measure the

flow of a manual torch by installing the cone adaptor

to the bottom of the Rotameter hand tight (do not

over tighten), hold the torch in an inverted vertical

position and place the cone adaptor firmly over the

torch nozzle and heat shield.

For a mechanized torch, remove the torch from its

mount and use the meter as described above or in-

stall the cone adaptor on the female thread of the

hose and the male thread of the hose to the

Rotameter. This will allow use of the Rotameter with

the torch installed on the machine.

8. Read the gas flow at the top of the Rotameter float

and compare this to the flows listed for your torch on

this document. If the flows are not as specified here,

check to be sure the proper pressure has been set

at the power source regulator, check for damaged or

kinked supply hoses and check for leaks at all gas

fittings. Make the necessary repairs or adjustments

and recheck the flow.

9. After checking the flow, place power switch on unit

to OFF.

10. Turn off power to unit at main disconnect switch.

11. Reconnect torch switch plug to unit.

Do NOT use with torch switch ON. Use SET-UP switch

for flow.

WARNING

NOTE:

Part numbers in parenthesis apply to European units only.

WARNING

Be sure this information reaches the operator.

You can get extra copies through your supplier.

PT-121 Torch Gas Flows:

NOZZLE P/N: 17184 17119 999263

Plasma Gas:

Nitrogen @ 25 psig (1,7 bars) 20-50 cfh (9,4 - 23,6 l/m) 40-90 cfh (18,9 - 42,5 l/m) 50-100 cfh (23,6 - 47,2 l/m)

H-35 @ 65 psig (4,5 bars) 25-75 cfh (11,8 - 35,4 l/m) 85-135 cfh (40,1 - 63,7 l/m) 125-180 cfh (59,0 - 85,0 l/m)

Cooling Gas:

or air @ 50 psig (3,4 bars) 170-230 cfh (80,2 - 108,5 l/m) 170-230 cfh (80,2 - 108,5 l/m) 310-370 cfh (146,3 - 174,6 l/m)

@ 50 psig (3,4 bars) 130-190 cfh (61,4 - 89,7 l/m) 130-190 cfh (61,4 - 89,7 l/m) 240-300 cfh (113,3 - 141,9 l/m)

PT-17A Torch Gas Flow (All Nozzles):

Total Air Flow @ 75 psig (5,2 bars): 290 cfh (136,9 l/m) minimum

PT-20 AM Torch Gas Flow (All Nozzles):

Total Air Flow @ 75 psig (5,2 bars): 325 cfh (153,4 l/m) minimum

PT-23/PT-27 Torch Gas Flow (All Nozzles):

Total Air Flow @ 75 psig (5,2 bars): 240 cfh (113,3 l/m) minimum

PT-31XL Torch Gas Flows:

NOZZLE P/N: 19667 18866 18820

Total Air Flow @ 40 psig (2,6 bars): 140 cfh (66,1 l/m) minimum 190 cfh (89,7 l/m) minimum

F-14-391-F 08/2003 Printed in U.S.A.

PT-26 Torch Gas Flows: (Plasma Gas Only)

NOZZLE (200 A) P/N 36569 (0558003798) & INSULATOR (STD) P/N 34593 (0558003711)

Total Air Flow @ 50 psig (3,4 bars): 95 cfh (44,9 l/m) minimum

PT-26 Torch Gas Flows: (Shield Gas Flow Only)

- on ESP-150 / ESP-200

Total Air Flow @ 50 psig (3,4 bars): 110 - 150 cfh (52,0 - 70,8 l/m) minimum

- on PCM-150

Total Air Flow @ 50 psig (3,4 bars): 175 cfh (82,6 l/m) minimum

PT-32 Torch Gas Flows: (70 & 90 A Nozzles)

Total Air Flow @ 80 psig (5,5 bars): 325 cfh (153,4 l/m) minimum

NOTE:

Part numbers in parenthesis apply to European units only.

Nozzle

Plasma Flow

Cooling Flow

Total Flow

PT-25 Air or Nitrogen Flow Rate should be as follows:

100A

162

396

558

150A

180

372

552

Gouging

144

264

408

@ 75 psig @ 45 psig

Swirl Baffle - 21664 (4-slot)

Nozzle

Plasma Flow

Cooling Flow

Total Flow

100A

187

264

150A

176

221

Gouging

125

156

@ 5,2 Bar @ 3,1 bar

Swirl Baffle - 0558000736 (2-slot)

( cu. ft. per hr. +/- 25% ) ( l / min +/- 25% )

ESAB is continually updating plasma torch designs to provide

our customers and industry with leading performance and value.

Always consult the individual plasma torch sales literature or

instruction manual for the most current flow specifications.

ESAB Plasma Torch Flow Measuring Kit Troubleshooting instruction

ESAB Plasma Torch Flow Measuring Kit Troubleshooting instruction

ESAB Plasma Torch Flow Measuring Kit Troubleshooting instruction

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