23
09
Troubleshooting
Manual 1808 Rev B p/n 001808 0000
SYMPTOM PROBABLE CAUSE REMEDIES
System ultimate pressure
excessively high
System contaminated
by volatile material
Clean equipment with acetone, alcohol, or ether.
Pump ultimate pressure
excessively high
Oil is contaminated Pump down using full gas ballast overnight.
Process equipment
leaks, vacuum pump
leaks
Check leaks.
Oil ow blocked Clean oil lines.
Discharge valve
malfunctioning
See Discharge Valves on page 21.
Shaft seal leaking See Shaft Seal on page 22.
Internal parts worn or
damaged
Disassemble pump and inspect parts for wear or
damage.
Pump noise at low
pressure
Hydraulic slap Increase gas ballast valve opening.
Pump will not start or
stalls
Locked drive bearing Replace bearing.
Loose or broken belts
See Starting Troubles or Stalling on page 19.
Lack of lubrication
Obstruction inside the
pump
Temperature too low
Flooding with oil
Loss of electrical
power
Table 9-1 – Common Symptoms and Remedies
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