Quincy Compressor QR-25 210, Instruction Manual

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QR-25 Series Quincy Compressor
52201-107, December 2012 33 3501 Wismann Lane, Quincy IL - 62305-3116
Trouble Probable Cause
Excessive lubricant •Compressor runs unloaded too long
consumption •Worn piston rings
•Restricted intake system
•Compressor running too hot
•Breather valve not functioning properly
•Lubricant level in crankcase too high
•Lubricant viscosity wrong for the application
•Connecting rod out of alignment, bent or twisted
•Leaking oil seal
•Piston rings not seated
(allow 100 hours for seating)
•Wrong lubricant
(may be a detergent oil with a tendency to foam)
•Inferior grade of lubricant
Excessive current draw •Low voltage
(must be within 10% of name plate voltage)
(To determine maximum
•Loose electrical connection
amper age allowed, multiply
•Wire size too small
the FLA on the motor
•Incorrect lubricant
nameplate by the service
•Discharge pressure too high
factor.)
•Intercooler plugging
CAUTION ! •Bearings tight or seizing
Motor surface temperature •No crankshaft endplay
normally exceeds 170° F. •Motor sized incorrectly
•Motor defective
•Drive belts too tight
Failure to start •Power not on
•Blown circuit fuse
•Overload relay tripped
•Low voltage
•Faulty start switch
•Power failure
•Pressure switch incorrectly
adjusted or faulty
•Loose or broken wire
•Motor defective
•Compressor seized
Motor stalls •Motor overloaded
(refer to
Excessive current draw
)
Overload relays are designed to pro-
tect the motor from damage due to
motor overload. If the overload relay
trips persistently, DO NOT CONTIN-
UE TO PUSH THE RESET BUTTON!
Contact your local Quincy distribu-
tor for assistance.
CAUTION !