Tweco Pak 200 - Manual (Page 84)

TORCH MAINTENANCE 7-4 Manual 0-5057
PAK 200 TORCH MAINTENANCE
7.05 Troubleshooting Guide
A. Troubleshooting
This Sub-Section covers troubleshooting that requires
disassembly and electronic measurements. It is helpful
for solving many of the common problems that can arise
with this torch assembly.
B. How to Use This Guide
The following information is a guide to help the Customer/
Operator determine the most likely causes for various
symptoms.
This guide is set up in the following manner:
X. Symptom (Bold Type)
Any Special Instructions (Text Type)
1. Cause (Italic Type)
a. Check/Remedy (Text Type)
Locate your symptom, check the causes (easiest listed
fi rst) then remedies. Repair as needed being sure to verify
that unit is fully operational after any repairs.
A. Torch will not pilot when torch switch is activated
1. Power Supply RUN/SET switch in SET position
a. Place RUN/SET switch to RUN position.
2. Torch switch activated during 20 second pre-fl ow
a. Release torch switch and wait at least 20 sec-
onds before activating switch again.
3. Coolant return lead clogged or plugged.
a. Check coolant return into unit reservoir. Inspect
torch assembly and replace if necessary.
4. Faulty torch parts.
a. Inspect torch parts and replace if necessary.
Refer to "7.04 Inspection and Replacement
Consumable Torch Parts" on page 7-2
5. Plasma gas pressure too high.
a. Refer to torch consumables information for
correct pressure.
6. 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.
7. Faulty components in power supply system com-
ponents
a. Return for repair or have qualifi ed technician
repair per Service Manual.
B. No cutting output
1. Torch not properly connected to power supply
a. Check that torch leads are properly attached to
power supply.
2. Poor Work Cable Connection.
a. Inspect work cable connection and adjust if
necessary.
3. 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.
4. Faulty components in power supply system com-
ponents
a. Return for repair or have qualifi ed technician
repair per Service Manual.
C. Low cutting output with no control
1. Incorrect setting of AMPERAGE control on power
supply.
a. Check and adjust to proper setting.
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 per Service Manual.
D. 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 "7.08 Torch And Leads
Troubleshooting" on page 7-8.