Goulds Pumps 3498 - IOM - Manual (Page 38)

PREVENTIVE MAINTENANCE
GENERAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . 35
MAINTENANCE TIMETABLE. . . . . . . . . . . . . . . . . . . . . . 35
MAINTENANCE OF FLOOD DAMAGED PUMPS . . . . . . . . . . 36
LUBRICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
SEALING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . 38
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . 40
GENERAL MAINTENANCE
!
The Preventive Maintenance section must be
adhered to in order to keep the applicable ATEX
classification of the equipment. Failure to follow
these procedures will void the ATEX classification
for the equipment.
Operating conditions vary so widely that to recommend one
schedule of preventive maintenance for all centrifugal
pumps is not possible. Yet some sort of regular inspection
must be planned and followed. We suggest a permanent
record be kept of the periodic inspections and maintenance
performed on your pump. This recognition of maintenance
procedure will keep your pump in good working condition,
and prevent costly breakdowns.
One of the best rules to follow in the proper maintenance of
your centrifugal pump is to keep a record of actual
operating hours. Then, after a predetermined period of
operation has elapsed, the pump should be given a
thorough inspection. The length of this operating period
will vary with different applications, and can only be
determined from experience. New equipment, however,
should be examined after a relatively short period of
operation. The next inspection period can be lengthened
somewhat. This system can be followed until a maximum
period of operation is reached which should be considered
the operating schedule between inspections.
MAINTENANCE TIMETABLE
INSPECTION INTERVALS
!
Inspection intervals should be shortened
appropriately if the pumpage is abrasive and/or
corrosive, or if the environment is classified as
potentially explosive.
EVERY MONTH
Check bearing temperature with a thermometer, not by hand.
If bearings are running hot (over 180° F), it may be the result
of too much or too little lubricant. If changing the lubricant
and/or adjusting to proper level does not correct the condition,
disassemble and inspect the bearings. Lip seals bearing on the
shaft may also cause the housing to run hot. Lubricate lip seals
to correct this condition.
EVERY 3 MONTHS
Check the oil on oil lubricated units. Check grease lubricated
bearings for saponification. This condition is usually caused
by the infiltration of water or other fluid past the bearing shaft
seals and can be noticed immediately upon inspection, since it
gives the grease a whitish color. Wash out the bearings with a
clean industrial solvent and replace the grease with the proper
type as recommended.
EVERY 6 MONTHS
Check the packing and replace if necessary. Use the grade
recommended. Be sure the seal cages are centered in the
stuffing box at the entrance of the stuffing box piping
connection.
Take vibration readings on the bearing housings. Compare the
readings with the last set of readings to check for possible
pump component failure (e.g. bearings).
Check shaft or shaft sleeve for scoring. Scoring accelerates
packing wear.
3498 IOM 12/04
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