Tweco PakMaster 75XL Plus (CE) - Manual (Page 39)

Manual 0-2782 5-5 SERVICE
3. Unit is overheated
a. Allow unit to cool down. Make sure the unit
has not been operated beyond duty cycle limit.
4. Input line voltage is below 75% of rated level
a. Check and connect to proper input power line
5. Faulty components in unit
a. Return for repair or have qualified technician
repair per Service Manual.
D. Torch will not pilot when torch switch is activated
1. RUN/SET/LATCH switch in SET position
a. Move switch to RUN position.
2. Faulty torch parts
a. Inspect torch parts and replace if necessary (re-
fer to Instruction Manual supplied with torch).
3. Gas pressure too high or too low
a. Set pressure to 60 psi (4.1 bar).
4. Faulty components in unit
a. Return for repair or have qualified technician
repair per Service Manual.
E. No cutting output; AC Power indicator ON; Fans
operating
1. Torch not properly connected to power supply
a. Check that torch leads are properly attached to
power supply.
2. Shield cup not properly installed on torch
a. Check that shield cup is fully seated against
torch head (do not overtighten if screwed on).
3. Faulty components in unit
a. Return for repair or have qualified technician
repair per Service Manual.
4. Faulty Torch
a. Return for repair or have qualified technician
repair per Torch Instruction Manual.
F. Low cutting output with no control
1. Torch tip touching workpiece, tip saver active
2. Incorrect setting of CURRENT control
a. Check and adjusted to proper setting.
3. Faulty components in unit
a. Return for repair or have qualified technician
repair per Service Manual.
G. Erratic or improper cutting output
1. Poor input or output connections
a. Check all input and output connections.
2. Incorrect type and size cable on input or output
a. Use proper type and size cables.
H. Cutting output available; Fans not operating, AC
Power indicator ON
1. Fan blades blocked
a. Check and clear blades.
2. Faulty components in unit
a. Return for repair or have qualified technician
repair per Service Manual.
I. No gas flow; Fans operate; AC POWER indicator
ON
1. Gas not connected or pressure too low
a. Check source for at least 70 psi (4.8 bar).
2. Gas supply pressure too high
a. Maximum of 125 psi inlet pressure
3. Faulty components in unit
a. Return for repair or have qualified technician
repair per Service Manual.
J. Torch cuts but not adequately
1. Drag circuit active
a. Lift tip from work piece.
2. Current set too low
a. Increase current setting.
3. Torch is being moved too fast across workpiece
a. Reduce cutting speed (refer to Instruction
Manual supplied with torch.)
4. 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).