Tweco CutMaster 10mm - Manual (Page 48)

cutmaster 10mm
SERVICE 5-6 Manual 0-5074
5.02 Common Faults
Problem - Symptom Common Cause
Insufficient
Penetration
1. Cutting speed too fast.
2. Torch tilted too much.
3. Metal too thick.
4. Worn torch parts
5. Cutting current too low.
6. Non - Genuine Thermal Dynamics
parts used
7. Incorrect gas pressure
Main Arc
Extinguishes
1. Cutting speed too slow.
2. Torch standoff too high from
workpiece.
3. Cutting current too high.
4. Work cable disconnected.
5. Worn torch parts.
6. Non - Genuine Thermal Dynamics
parts used
Excessive Dross
Formation
1. Cutting speed too slow.
2. Torch standoff too high from
workpiece.
3. Worn torch parts.
4. Improper cutting current.
5. Non - Genuine Thermal Dynamics
parts used
6. Incorrect gas pressure
Short Torch Parts Life1. Oil or moisture in air source.
Exceeding system capability (material
too thick).
3. Excessive pilot arc time
4. Gas pressure too low.
5. Improperly assembled torch.
6. Non - Genuine Thermal Dynamics
parts used
Difficult Starting 1. Worn torch parts.
2. Non - Genuine Thermal Dynamics
parts used.
3. Incorrect gas pressure.
5.03 Basic Troubleshooting Guide
WARNING
There are extremely dangerous voltage and
power levels present inside this unit. Do not
attempt to diagnose or repair unless you have
had training in power electronics measure-
ment and troubleshooting techniques.
A. Basic Troubleshooting: Overview
This guide covers basic troubleshooting. It is
helpful for solving many of the common problems
that can arise with this system. If major complex
subassemblies are faulty, the unit must be returned
to an authorized service center for repair.
Follow all instructions as listed and complete each
section in the order presented.
For major troubleshooting and parts replacement pro-
cedures refer to the Power Supply Service Manual for
this product.
B. How to Use This Guide
The following information will help the Cus-
tomer / Operator determine the most likely causes
for various symptoms. Follow all instructions
as listed and complete each section in the order
presented.
This guide is set up in the following manner:
X. Symptom (Bold Type)
Any Special Instructions
1. Cause
a. Check / Remedy
Locate your symptom, check the causes (easiest
listed first), then remedies. Repair as needed be-
ing sure to verify that unit operates properly after
any repairs.
C. Common Symptoms
A. Gas regulator leaks
1. Regulator is open
a. Reset regulator to 0 psi, then adjust to 65 psi
( 4.5 bar ).