Tweco 42 CutMaster Service Manual - Manual (Page 38)

Troubleshooting 6-2 Manual 0-5171
CUTMASTER 42 TROUBLESHOOTING
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.
4. Faulty components in unit
a. Return for repair or have qualified technician repair per service manual.
E. Torch will not pilot, when torch trigger is activated.
1. Faulty parts in torch
a. Check torch parts per section 4.02; replace as needed.
2. Gas pressure too low
a. Adjust supply pressure to proper setting value.
NOTE
The pressure should be set at (100 PSI).
3. Faulty tip in use
a. In 115VAC operation, 40 Amp Tip is used which prevents the unit from piloting;
Replace with 20 Amp Tip.
4. Faulty components in unit
a. Return for repair or have qualified technician repair per service manual.
F. No cutting output when torch is activated; AC indicator ON, gas flows, fan turns.
1. Torch is not connected properly to power supply.
a. Check torch connection to power supply.
2. Working cable not connected to work piece, or connection is poor.
a. Make sure that work cable has a proper connection to a clean, dry area of the work piece.
3. Faulty components in unit
a. Return for repair or have qualified technician repair per service manual.
4. Faulty torch
a. Return for repair or have qualified technician repair.
G. Torch cuts but not adequately
1. Incorrect setting of output current control
a. Check and adjust to proper setting.
2. Working cable connection to work piece is poor.
a. Make sure that work cable has a proper connection to a clean, dry area of the work piece.
3. Faulty components in unit
a. Return for repair or have qualified technician repair.
H. Output is restricted, and can not be controlled.
1. Input or output connection is poor.
a. Check all input and output connection leads.
2. Working cable connection to work piece is poor.
a. Make sure that work cable has a proper connection to a clean, dry area of the work piece.