SCREW VACUUM PUMP MAINTENANCE AND CHECK LIST
No. Item
Check Point
Daily
Monthly
3
∼
6
Month
Yearly
1 Ampere of Motor
Any Change?
Ampere as specified?
2 Rotation
Is rotation smooth and correct?
3
Suction and Discharge
Pressure
Are those pressures as specified?
4
Noise and Vibration
Any abnormal sound or vibration?
5 Temperature
Any excessive oil temperature
rise on Bearing and other parts?
6
Oil amount of Front
End cover
Is Oil at proper level?
7
Water contamination
on Front End cover
Clean or not ?
8 Oil Leak
Oil not leaked?
9 Lubricant Replacement
All Oil & Grease in Front end
cover & Grease cover to be
replaced.
10
Amount and pressure
of Cooling Water for
Pump Casing
The amount as specified?
The pressure not too high?
11
Suction and
Discharge pipe
Is there any Scale?
12
Cleaning and Dry run
at stop
Before stopping the pump after each
batch, close the main V/V on suction
and run for 20
∼
30min. while purging
N
2
or air.
13
Check Inside of
Casing and Screw
Any rust or flaw found?
14
Mech. seal, Lip Seal,
Oil Seal, Bearing,
O-ring, Slip Sleeve,
Speedi Sleeve, Packing,
V-Belt/Coupling,
Replace when need.
