Tweco Pak 200 - Manual (Page 85)

Manual 0-5057 7-5 TORCH MAINTENANCE
TORCH MAINTENANCE PAK 200
3. Faulty components in power supply system com-
ponents
a. Return for repair or have qualifi ed technician
repair per Service Manual.
E. Improper cutting output
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 Section "4.07
Recommended Cutting Speeds" on page 4-8).
3. Excessive oil or moisture in torch
a. Hold torch 1/8 inch (3mm) from clean surface
while purging and observe oil or moisture
buildup (Do Not activate torch)
4. Poor input or output connections to power supply
a. Check all input and output connections.
F. No gas fl ow
1. Gas not connected or pressure too low
a. Check source for at least 100-125 psi (6.9- 8.6
bar) maximum pressure.
2. Faulty components in torch and leads assembly
a. Inspect torch assemblies and replace if neces-
sary. Refer to Section "7.08 Torch And Leads
Troubleshooting" on page 7-8.
3. Faulty components in power supply system com-
ponents
a. Return for repair or have qualifi ed technician
repair.
G. 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 Section "4.07
Recommended Cutting Speeds" on page 4-8).
3. Oil or excessive moisture in torch
a. Hold torch 1/8 inch (3 mm) from clean surface
while purging and observe oil or moisture
buildup (Do Not activate torch).
7.06 Servicing Hand Torch Components
A. Removing Torch Switch and Torch Head Assembly
Removing the torch control switch assembly requires
gaining access to the switch wiring and partially disas-
sembling the torch handle, as follows:
1. Remove the shield cup, tip, gas distributor and
electrode from the Torch Head assembly.
2. Roll the torch switch sheath back over the handle
to expose the tape covering the torch switch con-
nectors.
NOTE
Use a soap and water solution on the sheath
to assist in rolling.
Sheath
Connectors From
Torch Switch
Torch Handle
Torch Control
Switch
A-02196
Threaded Locking Nut
Figure 7-5: Switch Wiring
3. Carefully cut and remove the tape from the leads
and the end of the leads sheathing.
4. Slide the sheathing back to expose the torch switch
connectors.
5. Remove the tape securing the two connectors
together.
6. Disconnect the torch switch leads.
NOTE
The torch switch connectors are made to fi t
into the matching connectors.
7. Remove torch from handle.
NOTE
Keep the lock nut threaded on the Torch Head.
8. Disconnect all four leads to disconnect the Torch
Head.