Tweco 35A CutSkill - Manual (Page 28)

cutskill 35A
SERVICE 5-2 Manual 0-5104
A. Every three months
Check external air filter, replace if necessary.
1. Shut off input power; turn off the gas supply.
Bleed down the gas supply. Check air filter and replace if neces-
sary.
NOTE
Leave internal ground wire in place.
B. Every six months
1. Check the in-line air filter(s), clean or replace as required.
2. Check cables and hoses for leaks or cracks, replace if necessary.
3. Check all contactor points for severe arcing or pits, replace if necessary.
4. Vacuum dust and dirt out of the entire machine.
5.02 Basic Troubleshooting Guide
!
WARNING
There are extremely dangerous voltage and power levels present inside this unit. Do not attempt to
diagnose or repair it unless you are an accredited service provider and you have had training in power
electronics measurement and troubleshooting techniques.
1. Common Faults symptom
A. Gas regulator leakage
1) Gas regulator on
a. Reset the regulator to 0 PSI and re-adjust it to 65 PSI (4.5 bar).
B. AC indicator OFF
1) Main input power cord does not connect to power distribution net.
a. Connect the power cord.
2) Power ON/OFF switch in OFF (down) position.
a. Turn switch to ON (up) position.
3) Actual input voltage does not correspond to voltage of unit.
a. Verify that the input line voltage is correct.
4) Faulty components in unit
a. Return for repair or have qualified technician repair per service manual.
C. Torch will not pilot; When trigger is activated, Air indicator ON.
1) Gas pressure too low. Adjust the pressure to 65 PSI/4.5 bar.
D. AC indicator ON, TEMP indicator ON.
1) Air flow blocked
a. Check for blocked air flow around the unit and correct condition.
2) Fan blocked
a. Check for blocked status and correct condition.
3) Unit is overheated.
a. Keep the machine plugged in and turned on for five minutes. This will allow
the fan to run and cool the machine.