Torch Tests - Thermal Dynamics C-20A Cutskill Service Manual

6.06 Torch Tests

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.
PIP
Switch
Torch
Switch
Torch Head
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. 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. Turn the switch located on the front panel, to the "On" position.
f. Press the air/set button on the front of the power supply for air flow.
g. Repeat this same Ohm check of the pilot lead to the negative lead. It should now read open (no resistance).
h. Turn off the air flow and check again. The Ohm meter should show a short, less than 1 Ohm.
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.
TROUBLE SHOOTING
WARNING
Negative / Plasma Lead
Black
Orange
Green
White
Pilot
Torch Leads
NOTE
6-8
To Power
Supply Adapter
1
2
Continuity
Check
Pilot
Art # A-05557
Manual 0-4697