ESAB Cutmaster 80 - Basic Troubleshooting Guide

ESAB CUTMASTER 80
SERVICE Manual 0-5396
5-4
5.05 Basic Troubleshooting Guide
WARNING
Thereareextremelydangerousvoltageandpowerlevelspresentinsidethisunit.Do
notattempttodiagnoseorrepairunlessyouhavehadtraininginpowerelectronics
measurement and troubleshooting techniques.
Problem - Symptom Possible Cause Recommended Action
ON/OFFSwitch
isONbuttheA/C
Indicator does not
light
1. Primary power disconnect is in
OFF position.
2. Primary fuses / breakers are
blown or tripped.
3. Units internal fuse blown.
4. Faulty components in unit.
1.TurnprimarypowerdisconnectswitchtoONposition.
2.a)Havequaliedpersoncheckprimaryfuses/breakers.
b) Connect unit to known good primary power receptacle
3. a) Replace fuse.
b)Iffuseblowsagain,returntoauthorizedservicecenterfor
repair or replacement.
4.Returntoauthorizedservicecenterforrepairorreplacement.
Fault indicator
ashing,65PSI
indicatorashing
1.Improperinputvoltage.
2.Primaryinputvoltageproblem.
3. Faulty components in unit.
1.Checkforproperprimaryinputvoltage.
2.Havequaliedpersoncheckprimaryvoltagetoinsureitmeets
unit requirements see section 2.05.
3.Returntoauthorizedservicecenterforrepairorreplacement.
TEMPERATURE
indicatorON.FAULT
indicatorashing.
1.Airowthroughoraroundtheunit
is obstructed.
2. Duty cycle of the unit has been
exceeded
3. Failed components in unit
1. Refer to clearance information – section 2.04
2. Allow unit to cool.
3.Returntoauthorizedservicecenterforrepairorreplacement.
GASLEDOFF,
FAULTandMIN
pressure indicators
ashing.
1. Gas supply not connected to unit.
2.GassupplynotturnedON.
3. Gas supply pressure too low.
4.AIRPRESSURECONTROL
regulator set too low.
5. Failed components in unit.
1. Connect gas supply to unit.
2.TurngassupplyON.
3. Set air supply inlet pressure to unit to 120 psi.
4.Adjustregulatortosetairpressure-seesection4.02.
5.Returntoauthorizedservicecenterforrepairorreplacement.
FAULT and 70 PSI
indicatorsashing.
1. Shield Cup loose.
2. Torch not properly connected to
power supply.
3. Problem in torch and leads PIP
circuit.
4. Failed components in unit.
1. Hand tighten the shield cup until it is snug.
2. Insure torch ATC is securely fastened to unit.
3.Replacetorchandleadsorreturntoauthorizedservicecenter
for repair or replacement.
4.Returntoauthorizedservicecenterforrepairorreplacement.
FAULT and 75 PSI
indicatorsashing.
1.StartsignalisactivewhenON/
OFFSWITCHisturnedtoON
position.
2. Problem in the torch and leads
switch circuit.
3. Failed components in unit.
1.Startcanbeactiveforoneofthefollowing:
•Handtorchswitchheldclosed
•Handpendantswitchheldclosed
•CNCSTARTsignalisactivelow
Release the START signal source
2.Replacetorchandleadsorreturntoauthorizedservicecenter
for repair or replacement.
3.Returntoauthorizedservicecenterforrepairorreplacement.