Tweco CE PAK Master 150XL Without Latch Circuit - Manual (Page 46)

SERVICE 5-6 Manual 0-2696
H. AC POWER Indicator ON; Fans operate; No gas flow
1. Gas not connected or pressure too low
a. Check source for at least 100-125 psi (68.9- 86.2 bar).
2. Faulty components in unit
a. Return for repair or have qualified technician repair
per Service Manual.
I. Torch cuts but not adequately
1. Current set too low
a. Increase current setting.
2. Torch is being moved too fast across workpiece
a. Reduce cutting speed (refer to Instruction
Manual supplied with torch).
3. Excessive oil or 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)
4. Defective torch parts
a. Replace defective parts.
J. GAS Indicator OFF
1. Gas pressure set too low
a. Adjust pressure
2. Faulty power supply
a. Return for repair or have qualified technician
repair per Service Manual.
3. No coolant flow.
a. Return for repair or have qualified technician
repair per Service Manual.
K. GAS Indicator OFF, plasma and/or secondary gas
does not flow
1. Low plasma pressure
a. Check plasma pressure
2. Secondary supply turned OFF (or cylinder empty)
a. Check secondary supply
3. Blocked torch
a. Check torch parts.
4. Faulty power supply
a. Return for repair or have qualified technician
repair per Service Manual.
L. GAS Indicator flashing ON and OFF
1. Air in coolant lines
a. Check for proper coolant level at rear panel gauge
b. Run pump for ten minutes to purge air from the cool-
ant lines before using the system.
M. Leaking torch connection
1. Loose torch connection
a. Check connection making sure connector is fully
seated.
N. Weak or sputtering pilot; CD stays on during pilot
1. Plasma gas pressure too high
a. Adjust pressure
2. Low OCV (normal 290-350 VDC) caused by improper
input voltage selection
a. Check input voltage connections
3. Faulty power supply
a. Return for repair or have qualified technician
repair per Service Manual.
O. Pilot arc ON; No main arc transfer (torch brought
within range of work)
1. Work cable not connected
a. Connect work cable securely
2. Faulty power supply
a. Return for repair or have qualified technician
repair per Service Manual.
P. AC Indicator ON; GAS Indicator light on when
torch switch pressed; DC Indicator light blinks
1. Shorted torch.
a. Return for repair or have qualified technician
repair per Service Manual.
2. Faulty power supply.
a. Return for repair or have qualified technician
repair per Service Manual.