Tweco PCM - 102 Machine Torch - Manual (Page 36)

SERVICE 5-4 Manual 0-2818
B. No cutting output
1. Torch not properly connected to power supply
a. Check that torch leads are properly attached
to power supply
2. Shield cup not properly installed on torch
a. Check that shield cup is fully seated against
torch head (do not overtighten)
3. Parts - In - Place (PIP) not satisfied.
a. Check canted coiled spring inside shield cup
4. Faulty components in torch and leads assembly
a. Inspect torch assemblies and replace if neces-
sary. Refer to Section 5.06, Torch & Leads
Troubleshooting.
5. Faulty components in power supply system components
a. Return for repair or have qualified technician
repair per Service Manual.
C. Limited output with no control
1. Poor input or output connections to power supply
a. Check all input and output connections.
2. Faulty components in torch and leads assembly
a. Inspect torch assemblies and replace if neces-
sary. Refer to Section 5.06, Torch & Leads
Troubleshooting.
3. Faulty components in power supply system components
a. Return for repair or have qualified technician
repair per Service Manual.
D. Erratic or improper cutting output
1. Poor input or output connections to power supply
a. Check all input and output connections.
2. Current set too low at power supply
a. Increase current setting.
3. Torch is being moved too fast across workpiece
a. Reduce cutting speed (refer to Appendix Page
for the Power Supply being used).
4. Excessive oil or moisture in torch
a. Hold torch 1/8 inch (3.2 mm) from clean sur-
face while purging and observe oil or moisture
buildup (do not activate torch).
5. Torch tip dragged across workpiece
a. When the tip is dragged across the workpiece,
the amperage automatically cuts back to 35
amps (see Note).
NOTE
All power supplies may not have this feature.
E. No gas flow
1. Gas not connected or pressure too low
a. Check source for proper operating gas pressure
(refer to Appendix Page for Power Supply
used).
2. Faulty components in torch and leads assembly
a. Inspect torch assemblies and replace if neces-
sary. Refer to Section 5.06, Torch & Leads
Troubleshooting.
3. Faulty components in power supply system components
a. Return for repair or have qualified technician
repair per Service Manual.
F. Torch cuts but not adequately
1. Current set too low at power supply
a. Increase current setting
2. Torch is being moved too fast across workpiece
a. Reduce cutting speed (refer to Appendix Page
for the Power Supply being used).
3. Excessive oil or moisture in torch
a. Hold torch 1/8 inch (3.2 mm) from clean sur-
face while purging and observe oil or moisture
buildup (do not activate torch)