Flowserve MPT - Manual (Page 20)

MPT USER INSTRUCTIONS ENGLISH 85392699 06-09
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6 MAINTENANCE
6.1 Maintenance schedule
Our specialist service personnel can help with
preventative maintenance records and provide
condition monitoring for temperature and vibration
to identify the onset of potential problems if
required. This schedule is a recommendation only
and is intended to be amended by site experience
of the prevailing conditions. It outlines
recommendations for the pump only and must be
supplemented by schedules for other equipment on
the package.
6.1.1 Routine inspection (daily/weekly)
The following checks should be made and the
appropriate action taken to remedy any deviations:
•
Check operating behavior. Ensure performance,
noise, vibration, and bearing temperatures are
normal
•
Check that there is no abnormal fluid or
lubricant leakage
•
Check running hours since last oil change.
Change if required
•
Refer to the manuals of any associated
equipment for routine checks needed
•
Check oil levels in seal chamber and bearing
housing
6.1.2 Periodic inspection (6 monthly)
•
Check foundation bolts for security of
attachment and corrosion
•
The coupling should be checked for correct
alignment and worn driving elements
•
Check all paint or protective coatings
•
Check all cable glands for tightness
•
Refer to the manuals of any associated
equipment for periodic checks needed
6.2 Lubrication data
6.2.1 Oil lubricated bearings and
mechanical seals
Normal intervals between oil changes are 4000
operating hours or a 12-month period. The
characteristics of the installation and severity of
service will determine the frequency of lubrication
change. See Section 3.3.4, Pump lubricant data.
Any sudden change in oil level should be
investigated without delay. A rise in bearing
housing oil level, together with a drop in the seal
chamber oil level, indicates a secondary seal failure
allowing oil leakage from the seal chamber to the
bearing housing. A drop in bearing housing oil level
indicates an external leak and a check of the pump
would show the source as a failure of the bearing
cover lip seal or gasket or a loose drain plug. An
abnormal rise or fall in the seal chamber oil level
with no change in the bearing housing oil level
indicates a primary seal failure with product leaking
into seal chamber or oil leaking into the pump.
Always use the recommended Type and
grade of oil, Mobil DTE Medium or Castrol Hyspin
AWS 46. Never mix oil types.
6.3 Mechanical seals
When leakage becomes unacceptable as
determined above, the seal will need to be repaired
or replaced.
6.4 Dismantling
6.4.1 General
Cleanliness is extremely important and care
must be taken to prevent any foreign material from
entering the pump or its components.
This pump is of the back pull-out design; it is not
necessary to remove the casing, to detach the
suction and delivery piping, or to remove the driver
to dismantle pump.
6.4.2 Dismantling the pump
Refer to Safety section before dismantling
the pump.
6.4.3 Genuine Flowserve parts
Before dismantling the pump for overhaul,
ensure genuine Flowserve replacement parts
are available.