Flowserve MPT - Manual (Page 23)

MPT USER INSTRUCTIONS ENGLISH 85392699 06-09
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6.6.8 Back pull-out assembly/case
•
Fit new O-ring [4610-0] to bearing housing
spigot and lightly oil
•
Ensure that spacing bushes [1680] are screwed
fully home in bearing housing flange. This will
give maximum impeller clearance on assembly
•
Sling from eyebolt [1020] and fit back pull-out
assembly into casing, taking care not to damage
machined casing bores and O-ring. Tighten
fasteners finger tight only
•
Back off stud nuts [6580-1] and spacing bushes
in turn by equal amounts, at the same time
pushing back pull-out assembly into casing until
impeller contacts wear plate. At this stage check
the gap between the bearing housing and case
at four places to ensure that assembly is fully
seated on wear plate
•
To obtain correct clearance at wear plate turn
spacing bushes each one flat in a clockwise
direction. This will give a clearance of 0.30 mm
(0.012 in.) and the nuts [6580-1] can now be
fully tightened
6.6.9 Lubrication
Ensure oil chamber drain plugs are tightly fitted,
remove air vents [3854] from bearing housing and
seal chamber, and fill both chambers to the correct
level on the sight glasses [3858] with Mobil DTE
Medium or Castrol Hyspin AWS 46 oil.
Approximately one liter (33.81 fl. oz.) of oil in seal
chamber and 350 ml (11.83 fl. oz.) in the bearing
housing are needed. Refit vents and check for
leaks. Now that seals are lubricated, check element
for free rotation.
6.6.10 Final assembly
•
Refit coupling and connect driver. Check driver
alignment
•
Refit guards
•
Refit suction and discharge piping with new
gaskets
•
Check all fasteners and plugs for tightness
6.7 Spare Parts
6.7.1 Ordering of spares
Flowserve keeps records of all pumps that have
been supplied. When ordering spares the following
information should be quoted:
(1) Pump serial and service number(s)
(2) Pump type and size
(3) Part name
(4) Part number
(5) Number of parts required
6.7.2 Pump details
The pump size and serial number are shown on the
pump nameplate.
6.7.3 Genuine parts
To ensure continued satisfactory operation,
replacement parts to the original design
specification should be obtained from Flowserve.
Any change to the original design specification,
modification or use of a non-standard part) will
invalidate the pumps safety certification.
6.7.4 Recommended spares
Start up spares:
Normal maintenance spares:
1 – complete set of O-rings, gaskets, and lip seal
1 – mechanical sea
1 – set of bearings
1 – bearing circlip (not applicable MODEL 80)
1 – check valve flap
1 – wear plate
Critical service:
1 – complete set of O-rings, gaskets and lip seal
1 – mechanical seal
1 – set of bearings
1 – bearing circlip (not applicable MODEL 80)
1 – check valve flap
1 – wear plate
1 – impeller
1 – shaft
6.7.5 Storage of spares
Spares should be stored in a clean, dry area away
from vibration. Inspection and re-treatment of
metallic surfaces (if necessary) with preservative is
recommended at six monthly intervals.