H40, H50, H50VSD-C
Jul ‘17
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Trouble Shooting Guide (cont’d)
Condition:
Cause:
Suggested Correction:
E. Intake Valve Leaks Oil
When Unit Stops.
Intake Valve Seal leaks.
Intake Valve stuck in open position.
Blowdown Solenoid not functioning.
Repair using an Intake Valve Repair Kit.
Repair or replace the Intake Valve.
Replace the Solenoid.
F. Oil Consumption is Too
High.
Oil level is too high.
Oil Return Line (Scavenge Line) is blocked.
Oil Separator is saturated with oil.
Wrong type of oil used.
Unit is operating at too high a temperature.
Oil leak.
Unit load is light or excessive load/idle cycles.
Reduce the oil level to the proper level.
Clean and/or replace the Scavenge In-Line Filter.
Replace the Oil Separator.
Change to factory recommended oil.
See ‘Section C’.
Repair oil leak.
Ensure Unit is set to operate at correct pressures,
and there is a minimum of 10 psi (0.7 bar)
differential. Also the Unit could be oversized for the
tank capacity.
G. Compressor Surges.
Restriction in Heat Exchanger or Hoses.
Pressure Transducer setting is incorrect or
malfunctioning.
Blockage at Unit outlet.
Dryer is freezing up, not allowing air to pass
through.
Air Receiver is too small.
Flush out or replace.
Set pressure as per instructions or replace.
Check for obstructions in outlet piping.
Check that the Dryer parameters are correct.
Increase dew point to 2.0 if required.
Use a minimum 240 Gallon Tank for 50 HP Units.
H. High Power Consumption.
Improper air pressure settings.
Blowdown Solenoid is not functioning.
The voltage in the building is too low or there is
a phase imbalance.
The Motor is failing.
Reset the pressure as per factory defaults.
Inspect or replace as necessary.
Contact an Electrician to verify.
Have Motor inspected.
I Fault Alarms.
Emergency Stop.
High Temperature.
Low Temperature.
High pressure.
Ensure Emergency Stop Button is not pressed in.
See ‘Section C’.
Ambient temperature is too low. Increase to 10°C
(50°F).
Check the pressure settings, the Pressure
Transducer and the wiring to the Transducer.
