AirSep MN138-1 H - Manual (Page 35)

29
MN138-1 Rev H
02/14
Problem Probable Cause Solution
Compressor relief valve activates
(popping sound)
• Faulty electrical connection at waste
valve.
• Faulty solenoid valve coil.
• (Acceptable rating: 713-837 Ohms)
• Contaminated sieve beds.
• Faulty circuit board.
• Faulty relief valve.
• Repair electrical connection.
• Replace valve coil. (Use of an
ohmmeter can be helpful to easily
determine faulty coil).
• Replace sieve beds.
• Replace circuit board.
• Replace relief valve.
Unit alarms with l/0 power switch
in “ I ” position. Circuit breaker
repeatedly trips.
• Faulty electrical connection.
• Faulty capacitor.
• Faulty circuit breaker.
• Faulty compressor.
• Faulty circuit board.
• Repair electrical connection.
• Replace capacitor.
• Replace circuit breaker.
• Replace compressor.
• Replace circuit board.
Cabinet fan does not turn.
• Faulty electrical connections.
•
Faulty cabinet fan.
• Check electrical connections.
•
Replace cabinet fan.
Flowmeter fluctuates
• Improperly set or faulty product
regulator.
• Leak.
• Reduced air intake (suction)
• Faulty flowmeter.
• Worn compressor.
• Faulty circuit board.
• Faulty solenoid valve.
• Check regulator setting. Repair or
replace regulator.
• Leak test and repair leak.
• Check compressor intake path for
obstruction. Remove obstruction.
• Replace flowmeter.
• Replace compressor
• Replace circuit board.
• Replace solenoid valve manifold.
Limited or low flow. • Restriction in humidifier/tubing.
• Product regulator set too low.
• Leak.
• Reduced air intake (suction)
•
Weak compressor
• Faulty circuit board
• Restriction in mixing tank
• Faulty solenoid valve.
• Replace humidifier or tubing.
• Adjust regulator setting.
• Leak test and repair.
• Check compressor intake path for
obstruction and remove, if needed.
• Check system pressure, and rebuild or
exchange compressor.
• Replace circuit board.
• Replace mixing tank
• Replace valve manifold.
No flow indicated on flow meter,
and 6-beep no flow alarm does
not activate.
•
Internal leak. (likely in location from
unit regulator to flow meter)
•
Main circuit boards prior to Rev. R do
not have a ‘no flow’ alarm
•
Leak test and repair. In particular,
regulator / fittings following air path
to flow meter. Repair leaks.