AirSep Onyx, Instruction Manual, Page: 34 / 102

AirSep
®
Corporation
8-8 Onyx/Onyx+/Onyx Ultra Instruction Manual
8.3.2.3 Capacitor Replacement
The capacitor starts the compressor. If the compressor cannot start, the
capacitor may be defective and require replacement. To replace the
capacitor, follow the steps listed below:
1. Set the unit’s ON/OFF switch to the OFF position, and unplug the
power cord.
2. Remove both sides and lower front panels.
3. Disconnect the two leads to the capacitor and slide capacitor out of the
tie wraps holding it in place.
4. To install the new capacitor, connect the leads and slide the capacitor
into the tie wraps.
5. Reconnect the front and the side panels.
8.3.3 Solenoid Valves
The oxygen generation unit uses 5 two-way solenoid valves: two feed,
two waste, and one equalization. Each valve has an open (energized)
and closed (de-energized) position. As the unit operates, two valves are
always energized.
The solenoid valves of the unit require no scheduled maintenance. If a
valve becomes noisy, you can easily replace the internal valve parts. To
identify the noisy valve, observe which green circuit board light illuminates
at the time of the noise. The lighting matrix on the circuit board
corresponds to the valve location.
8.3.3.1 Feed or Waste Valve Rebuilding
The two feed valves and two waste valves are located on the unified
valve block. This valve block does not require removal to rebuild a feed
or waste valve.
1. Set the ON/OFF switch to the OFF position, and unplug the power
cord.
2. Remove both sides and back panels.
3. Remove the red cap from the appropriate valve with a slotted head
screwdriver.
4. Lift off the solenoid coil.
Correct direction of spring is required for proper valve
function.