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380C - 480C COMPRESSOR KIT
TROUBLESHOOTING GUIDE:
Tank pressure drops when
compressor(s)shutoff
1.Loosedraincock
2.Checkvalveleaking
3.Looseconnections
1. Tighten drain cock
2.Replacecheckvalveor
compressor
3. Check all connections with
soap and water solution
and tighten
Compressor runs
continuouslyandairow
lower than normal
1.Excessiveairusage
2.Looseconnections
3.Wornpistonringorinletvalve.
4.Cloggedairlterelement
1. Decrease air usage
2. Check all connections with
soap and water solution
and tighten.
3.Replacecompressor
4.Replaceairlterelement
Compressor runs
continuously causing
safetyvalve(ifequipped)
to open
1.Faultypressureswitch
2.Defectivesafetyvalve
1.Replacepressureswitch
2.Replacesafetyvalve
Excessivemoisturein
discharge
1.Excessivewaterinairtank
2.Highhumidity
1. Drain tank, tilt tank to drain.
Draintankmorefrequently
2.Movecompressortoarea
with less humidity, or use
airlinelter
Compressor will not run 1. No power, or power switch
inOFFposition
2.Blownfuse
3.Motoroverheats
4.Faultypressureswitch
(ifhookeduptoa
pressureswitch).
1.Makesurecompressor
switchisON
2. Disconnect compressor
from power source, replace
fuse.(RefertoSpecications
section for correct
fuseamperage)
3.Letcompressorcoolofffor
about 30 minutes to allow
thermaloverloadswitchtoreset.
4.Replacepressureswitch
Thermaloverload
protector cuts out
repeatedly
1.Lackofproperventilationor
ambient temperature is too high
2.Compressorvalvesfailed
1.Movecompressortowell
ventilatedarea,orareawith
lower ambient temperature
2.Replacecompressor
Excessiveknocking
or rattling
1.Loosemountingbolts
2. Worn bearing on eccentric or
motor shaft
3. Cylinder or piston ring is worn
1. Tighten bolts
2.Replacebearingor
piston assembly
3.Replacepistonorcompressor
CAUTION: NEVER DISASSEMBLE COMPRESSOR WHILE
COMPRESSOR IS PRESSURIZED.
USER MANUAL
PROBLEM:
POSSIBLECAUSE(S) CORRECTIVEACTION
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