Page 327 - Reciprocating Compressors Operation Maintenance

312 Reciprocating Compressors: Operation and Maintenance

TABLE 5-1 (CONTINUED)
TROUBLESHOOTING CHART

The Problem i_
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The Causes CO
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Intake pipe restricted, too small, too long
Intake filter clogged »
Unloaders or control defective * «• • *
Unloader setting wrong • a
Discharge pressure above rating •
Piston rings worn, broken, or stuck . .
Cylinder (piston) worn or scored • .
Gauge defective •
Intercooler, drain more often •
Speed too high * *
V-belt or other misalignment *
Pulley or flywheel loose *
Motor rotor loose on shaft *
Foundation too small *
Grout improperly placed *

Foundation bolts loose .
Leveling wedges left under compressor *
Piping improperly supported •
Foundation uneven — unit rocks •
Liquid carryover *

Oil level too high .
Oil viscosity incorrect • •
Rotation wrong *
Oil level too low •
Belts too tight *
Oil wrong type #
Crankcase oil pressure too high *
Unloaded running time too long (2) •
(2) Use automatic start-stop control