Thermal Dynamics C-70A CUTSKILL, Service Manual

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TROUBLE SHOOTING 6-10 Manual 0-4699
6.06 Torch Tests
WARNING
Disconnect primary power at the source before disassembling the power supply, torch, or torch leads.
1. PIP and Torch Switch Adapter Check
a. Disconnect input power from power supply.
b. Confirm that the torch parts are in place and that they match the parts consumables label on the power supply
cover.
c. Refer to Appendix 2 for torch connection and access. With the power supply on it's side and the panel removed,
disconnect the Power Supply Adapter from the power supply.
d. While the torch trigger is depressed, complete an Ohm check on the two pins in the Power Supply Adapter . The
reading should show a short (less than 1 Ohm). Refer to diagram.
Torch
Switch
Negative / Plasma Lead
Torch Head
White
Black
Orange
Green
PIP
Switch
Torch Leads
To Power
Supply Adapter
Pilot
Pilot
2
1
Continuity
Check
Art # A-05557
2. Start Cartridge Check
a. Disconnect input power and air from power supply.
b. Disconnect the pilot lead (see previous diagram).
c. Perform an Ohm check of the pilot lead to the negative lead. This should show a short of less than 1 Ohm. If it
does not show a short, check the function of the start cartridge. (See Start Cartridge illustration in 6.02) The inner
piece is spring loaded and should move freely. Also check other consumables for proper wear and fit.
d. Connect the power supply to air and power.
e. Press the air/set button on the front of the power supply for air flow.
f. Repeat this same Ohm check of the pilot lead to the negative lead. It should now read open (no resistance).
g. Turn off the air flow and check again. The Ohm meter should show a short, less than 1 Ohm.
NOTE
Every effort has been made to provide complete and accurate information in this manual. However, the
publisher does not assume and hereby disclaims any liability to any party for any loss or damage caused by
errors or omissions in this Manual, whether such errors result from negligence, accident, or any other cause.