yellow jacket 93530, Operation And Maintenance Manual

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8
Pump
Motor
Unusually
noisy
Pump
High
temp
Condition Pump Area Possible Problem Solution
Worn motor Replace motor
Loose motor bolts Tighten bolts
Coupling drive Adjust/replace coupling
No end play on shaft Adjust coupling
Dirt, low, improper oil Flush and replace oil
Air leaks:
1) caps/connection Tighten
2) Gaskets/”O”-rings Replace/put on oil
3) Fittings Replace/reseal
Damaged or worn bearing Call factory
Damaged or worn stators Call factory
Pump out of adjustment Call factory
Low voltage Short extension cord
Dirty oil Flush and replace
Low oil Add/replace
Lint/foreign material Open gas ballast
Parts friction Replace oil/call factory
Too small for system Size pump for system
Air leaks Replace/repair
Motor
Replacement Parts
4
2
1
7, 8, 9, 16, 17, 18
4
5
11 or 12,
13, 14 and 15
19
6, 10
Models #93530 and 93533 - 8 CFM (190 L/M)
3
7
Diagnostics Chart
Poor
vacuum
Quiet pump
Exhaust
Seal
Case
Oil
Leaks
Ultimate
vacuum of
pump - does
not meet
mfg. spec
(read with
thermocouple)
Pump
won’t
start
Motor
stalled
hot/cold
Thermal
Condition Pump Area Possible Problem Solution
Dirty oil Flush 1 to 3 times
Coupling or set screw loose Repair or replace
Bad exhaust valve Repair or replace
Pump not oiling Call factory
Vanes not functioning Call factory
Stator misaligned Call factory
Worn pump bearings Call factory
Pump dropped Call factory
Bad thermocouple Clean or replace
Bad motor Repair or replace
Dirty oil Flush 1 to 3 times
Air leaks Repair or replace
System leaks Isolate/repair
Fitting sealant compound Repair or replace
System leaks Repair leaks
Low oil level Add/replace
Dirty oil Flush 1 to 3 times
Worn pump Replace module, call factory
Air leaks at fittings or gasket seals Replace/repair
Oil level high Adjust oil level
System vented pressure through pump Check oil level, add or replace oil
Pump tipped over Check oil level, add or replace oil
Pump shaft Repair
Worn or damaged seal Replace
Motor loose Adjust/tighten, check seal
Gasket bolts loose Tighten
Oil drain fitting Repair or replace
Gasket damaged Replace
Damaged motor Repair or replace
Damaged pump Replace/call factory
Closed gas ballast on pumps Open intake fitting and gas ballast
Low voltage Shorter extension cord
Cold weather cut-out Open intake fitting for 1 minute
to warm up while starting
Dirty oil Flush 1 to 3 times
Noisy
pump