NOTICE:
Lubricate adjusting studs for easy maintenance.
7.1.3 Seals
The upper bearing housing seal may generate some heat until broken in. Oil may be applied to the seal if
the heat it generates becomes excessive at the time the pump is started. Make sure the seal area is free
of dust and dirt prior to starting.
7.1.4 Duplex thrust bearing replacement
Duplex bearings are made up of two single row bearings manufactured with controlled relationship be-
tween the axial location of the inner and outer ring faces and are supplied as matched pairs or sets.
When it becomes necessary to replace a duplex bearing, both halves of the new bearing must be match-
ed. Under no circumstances should a duplex bearing be made by using two single row bearings not spe-
cifically matched tor duplex use.
When replacing a duplex bearing, mount the two mated bearings back- to-back so that the stamped
faces (high shoulders) of the outer rings are together.
In case of making replacements for bearings which have been installed and run, it is recommended that
both halves be replaced. This avoids the dangers involved in attempting to match two bearings, one of
which has unknown internal characteristics.
7.1.5 Gaskets and o-ring seals
When making inspections or repairs, be sure to replace all gaskets and o-rings. Pumps will operate at
reduced capacities if o-rings are not installed.
7.1.6 MAINTENANCE SCHEDULE
In general, a routine maintenance program can extend the life of your pump. Well maintained equipment
will last longer and require fewer repairs.
NOTICE:
You should keep maintenance records, this will help pinpoint potential causes of problems.
1.
Routine Maintenance -
•
Bearing lubrication
•
Seal monitoring
•
Vibration analysis
•
Discharge pressure
•
Temperature monitoring
1.
Routine Inspections -
•
Check for unusual noise, vibration and bearing temperatures.
•
Inspect pump and piping for leaks.
1.
Quarterly Inspections -
•
Check hold down bolts for tightness.
1.
Yearly Inspections -
7.1 Operating and Maintenance Instructions
Model VJC Installation, Operation, and Maintenance Manual
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Summary of Contents for VJC
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