ESAB fabricator 141i Service Manual

ESAB FABRICATOR 141i
Manual 0-5448 6-3 TROUBLESHOOTING
1. Defective torch trigger
a) Check the torch trigger switch and replace it.
2. 8pin gun connector not connected
a) Connect 8 pin gun connector.
3. MIG GUN/SPOOL GUN switch is switched to SPOOL
GUN.
a) Turn the switch to MIG GUN.
4. When torch trigger is depressed, the output voltage
measured is about 14-24 VDC,but the motor doesn’t
run.
a) Measure the signal between pin 1 and pin 2
of PWM connector on Control PCB2, if it is not
present, replaces Control PCB2.
b) Measure the voltage between pin 1 and pin 2 of
MD connector on primary power PCB. It should
be 5-16VDC. If it is not present, replace Main
PCB1.
c) Measure the voltage between pin 3 and pin 4 of
M1/S in spool gun PCB6. It should be 5-16VDC.
If it is not present, replace spool gun PCB6.
d) Check and replace the wire if it is broken.
e) Replace the motor if it is faulty.
C. Welding wire continues to feed when torch trigger is
released.
1. Trigger mode selection switch is in 4T mode position
a) Turn the trigger mode to 2T mode.
2. Faulty Torch trigger switch
a) Replace torch trigger switch.
3. Torch trigger leads short circuit
a) Repair trigger leads.
D. Welding arc cannot be established.
1. MIG gun polarity lead is not connected to a welding
output terminal
a) Connect the MIG gun polarity lead to either posi-
tive welding output terminal or negative welding
output terminal as appropriate.
2. Poor or no work lead contact
a) Clean work clamp area and ensure good electri-
cal contact.
E. Inconsistent wire feed.
1. Fouled contact tip
a) Replace contact tip if necessary.
2. Drive roll tension not tight enough
a) Tighten drive roll tension.
3. Worn feed roll
a) Replace feed roll.
4. Excessive brake tension on wire reel hub
a) Reduce brake tension on spool hub.
5. Worn, kinked or dirty conduit liner
a) Clean or replace conduit liner.
F. No gas flow
1. Empty gas cylinder
a) Replace gas cylinder.
2. Flow meter/regulator turned off
a) Turn on flow meter/ regulator.
3. Gas passage contains debris
a) Disconnect gas hose from the rear of Power
Source and blow out debris.
4. Gas hose is damaged
a) Replace gas hose
5. Defective gas valve
a) Depress the trigger switch, measure the voltage
between pin 4 and pin 5 of DY1 connector on
Main PCB1. If it is 20-24VDC,but the gas valve
is not active, replace the gas valve.
6. If there is no voltage present between pin 4 and pin
5 of DY1 connector on Main PCB1, replace Control
PCB2.
F. Gas flow continues after the torch trigger switch has
been released.
1. Gas valve has jammed open due to debris in the gas
or gas line
a) Repair or replace the gas valve.
LIFT TIG Process Problem
A. TIG electrode melts when arc is struck.
1. TIG Torch is connected to the (+) polarity terminal
a) Connect the TIG Torch to the (-) polarity terminal.
2. No argon gas protects the electrode
a) Make sure the argon gas is applied.
NOTE!
For other problems, please refer to "STICK
Process Problem" Section.

ESAB fabricator 141i Specifications

General

Brand	ESAB
Model	fabricator 141i
Category	Welding System
Language	English