Hypertherm Powermax30 AIR Service Manual - Manual (Page 90)

90 Powermax30 AIR Service Manual 808850
5 – Troubleshooting and System Tests
Test 8 – fan
Test the fan (M1) for proper operation.
1. Set the power switch to OFF (O), and disconnect the power cord from the power source.
2. Remove the power supply handle and cover. See Remove the power supply cover on page 98.
3. Remove the component barrier. See Remove the component barrier on page 100.
4. Place a jumper from ground (see Figure 5 on page 73 for grounding options) to pin 3 of J5 (black wire, see
Figure 18).
5. Reconnect the electrical power and set the power switch to ON (I).
6. If the fan does not operate, replace the fan. See Replace the fan on page 155.
Figure 18
 Because of protection features on the fan driver chip, this test can trigger a fault. You can
disregard this fault if it occurs as a result of a fan test. The purpose of the fan test is to
verify that the fan is operating properly, not to test the fan drive circuit.
WARNING!
ELECTRIC SHOCK CAN KILL
Use extreme caution when working near live electrical circuits. Dangerous
voltages exist inside the power supply that can cause serious injury or death.
See the WARNING! on page 57 before proceeding.