Manual no. WM070501
Page
22
CoolCut40 - air
start trigger
Control transformer failure
Replace
Input voltage is too low
Use rated Input voltage
8 Cutting current cannot be
adjusted
cutting current adjustment
potentiometer is loose or
damage
Check and repair
9 Wall circuit breaker jump
Control transformer short
circuit
Check and replace
Solenoid valve short circuit
Check and replace
Cooling fan short circuit
Check and replace
Work excess the rated duty
circle
Use under rated duty
circle
Input voltage is too high
Use proper voltage
Table 6.1
6-2. Plasma cutting trouble shooting
No.
Problem
Cause
Solution
10
Erratic or improper
cutting output.
Wrong cable size
Choose the right cable
size
11
Cable or receptacle
too hot.
Poor contact between cutting
torch or earth cable and
receptacle at machine
Clean and tighten all
plasma cutting
connections
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