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TROUBLE SHOOTING CHART
CONDITION
POSSIBLE PROBLEM
UNUSUALLY
1. Bad Bearings
NOISY
2. Loose Motor Bolts
3. Coupling Drive
4. Dirty, low, or improper oil
5. Air leaks in connections
HIGH
1. Low or improper voltage
TEMPERATURE
2. Worn bearings
3. Low oil level
POOR VACUUM
1. System leaks
2. Low oil level
3. Dirty oil
4. Air leaks at connection
5. Air leak through seal
6. Worn rotary mechanism
OIL LEAKS
1. Oil leaks through exhaust
2. Oil leaks through shaft seal
3. Oil leaks through reservoir
4. System vented pressure
5. Pump tipped over
PUMP DOES
1. No voltage or incorrect
NOT START
2. Damaged motor
3. Thermal cutout
THERMAL
1. Low or incorrect voltage
CUTOUT
2. Cold weather
3. Dirty Oil
through pump
SOLUTION
1. Replace motor
2. Tighten Bolts
3. Adjust or replace coupling
4. Replace oil
5. Fix leaks
1. Check power source voltage
2. Replace motor
3. Add or replace
1. Fix leaks
2. Add or replace oil
3. Flush and replace oil
4. Fix leaks
5. Replace shaft seal
6. Replace cartridge
1. Oil level too high
2. Replace shaft seal
3. Tighten bolts or replace gasket
4. Check oil level
5. Check oil level
1. Oil level too high
2. Replace motor
3. Wait for thermal switch to reset.
Check for cause of thermal.
1. Check voltage, move voltage
selector switch to correct setting
2. Start and run vacuum pump with
the intake fitting and gas ballast
open for 1 minute to warm up oil.
3. Flush and replace oil.
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