Hypertherm Powermax105, Troubleshooting Manual, Page: 98 / 180

Do System Tests to Identify Defective Components
5
98 810430 Troubleshooting Guide Powermax65/85/105 SYNC
Test 6 – Torch stuck open (TSO) or torch stuck closed (TSC)
Use this test when you get 0-30-
n
faults during postflow and the Hypertherm cartridge is in good
condition and is installed correctly.
Examine the torch
1. Do a gas test for 2 minutes. Refer to page 26 .
2. Monitor the gas pressure while the gas is flowing. If the pressure decreases gradually, look for
the following conditions that can cause the pressure to decrease:

Does the torch lead have any kinks?

Are there cable ties around the torch lead that are too tight?

Is there heavy equipment putting too much weight on part of the torch lead?

Are there signs of damage to the torch lead that can cause gas pressure leaks?
3. Connect a different torch to the plasma power supply that is known to operate correctly. Does
the 0-30-
n fault go away?

If yes, continue with the next step.

If no, continue with Examine the plasma power supply on page 99.
4. Do a check for continuity on the original torch,
as follows:
a. Make sure that a cartridge is installed on
the torch and that the torch is
not
connected to the plasma power supply.
b. Do a check for continuity between pin 1 in
the torch connector and the brass in the
center of the connector.
c. Do a check for continuity between pin 2 in
the torch connector and the brass in the
center of the connector.
5. Is there continuity on both pins?

If yes, the problem can be with the plasma
power supply, not the torch. Continue with
Examine the plasma power supply on page 99.

If no, replace the torch lead.
BLK
BLK
1
2
3
4
5
BL
U
6
VIO
7
ORG
8
BL
K
9
BRN
10
GR
Y
11
YE
L
12
WHT
13
RED
14
15
16
17