Bulletin TI-LCMS-SF5000J
Installation, Operation and Maintenance Manual
Super Flow Tri-Gas Generators
www.labgasgenerators.com
31
1-800-343-4048
Compressor Troubleshooting
Symptom
Probable Cause
Corrective Action
Excessive noise or vibration
• Drive belts are loose
• Drive belt has separated or
flat spot
• Cooling fan touching guard
• Motor bearing has failed
• Re-greasing procedure
not performed at 5,000 hr
intervals
• Pump damaged
• Tighten belts to specification
• Replace drive belt
• Adjust guard
• Replace motor
• Removal of stationary scroll
is required for pump inspec-
tion
• Repair or replace pump
TEMPERATURE HIGH light
is on, Compressor shuts
down
• Room temp is above 104°F
• Inlet air duct is obstructed
• Cooling air fan not running
• Re-greasing procedure not
performed at 5,000 hr inter-
vals
• Aftercooler fins dirty, clogged
• Excessive tip seal wear
• Intake filter damaged
• Compressor is dirty
• Add ventilation or air condi-
tioning to room
• Remove obstruction or
reposition unit to allow for
cooling air
• Check electrical connection
at fan
• Replace cooling air fan
• Re-grease
• Clean aftercooler
• Replace tip seals per in-
structions every 5,000 hrs
• Check, replace filter
• Clean unit
Compressor shuts down on
temperature malfunction
• Temperature switch has
unplugged
• Temperature switch has
failed
• Plug in temperature switch
• Replace temperature switch
Compressor turns on/off
rapidly
• Receiver tank has high
level of water
• Compressor check valve
has failed
• Defective pressure switch
• Replace electric tank drain
• Replace check valve
• Replace pressure switch
Safety valve blows off
• Pressure switch has failed
to open
• Motor starter contacts
welded shut
• Replace pressure switch
• Replace motor starter
Motor overload has tripped
• Motor has failed
• Improper wiring
• Wrong overload setting
• Low voltage
• Pump has failed
• Replace motor
• Check wiring
• Check overload setting
• Check incoming power supply
• Fix or replace pump
