80 Powermax30 XP Service Manual 808150 Revision 0
5 – Troubleshooting and System Tests
Test 4 – solenoid valve
This test verifies the proper operation of the solenoid valve (V1).
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 88.)
3. Remove the component barrier. (See Remove the component barrier on page 90.)
4. Reconnect the electrical power.
5. Place a jumper from pin 4 of J6 on the power board (see Figure 12 on page 72 for location) to ground (see
Figure 11 on page 71).
Figure 19
6. Turn the power ON (I). The valve should click.
7. Measure the voltage between pin 4 of J6 and ground.
8. If you do not hear the valve click and the voltage check reads 24 VDC, replace the solenoid valve. (See Replacing the
solenoid valve on page 130.)
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 58 before proceeding.
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