Hypertherm Powermax30 Service Manual - Manual (Page 71)

MAINTENANCE
3-32
powermax30
Service Manual
Replace the air filter and regulator
1. Turn OFF the power, disconnect the power cord, and disconnect the gas supply.
2. Remove the 2 screws from the handle on the top of the power supply. Remove the handle and then lift the
cover off the power supply.
3. Remove the gas fitting from the rear of the power supply.
4. Remove the drain hose from the hole in the bottom of the power supply’s base.
5. Disconnect the red and black wires from the pressure sensor.
6. Disconnect the gas supply hose from the filter.
7. Unscrew the nut that holds the air filter in the bracket. Tip the bottom of the air filter away from the power
supply and slide the filter out of the bracket.
8. Position the new air filter in the bracket and replace the retainer nut.
9. Route the drain hose through the hole in the base of the power supply.
10. Press the black wire’s connector onto the pin on the left side of the pressure sensor and the red wire’s
connector onto the pin on the right side of the pressure sensor.
11. Connect the gas supply hose to the new filter. If you are replacing the hose, cut the new hose to the same
length as the old hose.
12. Reconnect the gas fitting, and then reconnect the gas supply to test it for leaks.
13. Being careful not to pinch any of the wires, slide the cover back onto the power supply. Make sure that the
bottom edges are in the tracks. Position the handle over the holes in the top of the cover, then use the
2 screws to secure the cover.
14. Reconnect the electrical power.
Red and black wires
Drain hose
Nut
Bracket
Gas fitting
Filter and
regulator
Gas supply hose Pressure sensor