Flowserve MJ Slurry - Manual (Page 26)

MJ SLURRY USER INSTRUCTIONS ENGLISH 71569294 - 02/08
Page 26 of 42
®
Refer to the manuals of any associated
equipment for periodic checks needed.
6.2 3 Re-lubrication
Lubricant and bearing temperature analysis can be
useful in optimizing lubricant change intervals. In
general however, the following is recommended.
See section 5.2.2 for grease
recommendations.
Regrease
- via grease nipples every 1 000 hours or
sooner depending on the severity of the application.
It is important not to under or over grease the
bearings as this will lead to over heating and
premature failure.
a) Grease lubricated bearing housings have grease
nipples fitted in the bearing covers.
b) Move the axial seal ring back so the gap
between the pump shaft and bearing cover can
be seen.
c) Connect grease gun to the nipple.
d) Press grease into the bearing housing until the
first signs of it appear in the gap between the
housing and shaft, then stop greasing.
e) The maximum allowable operating temperatures
for anti friction bearings will vary from unit to unit,
depending on ambient and fluid temperature.
The rise above ambient should not normally
exceed 55
°C (131 °F) or a combined maximum
of 95 °C (204 °F).
f) A continuously rising temperature or an abrupt
temperature rise indicates a problem. If these
symptoms occur, stop the pump immediately and
investigate the cause.
TIME
TEMP
ERAT
U
R
E
Grease change - every 4 000 hours or sooner
depending on the severity of the application.
a) Remove the bearing housing from the rotor
assembly.
b) Brush the bearing housing with hot kerosene
(100 to 115 °C/212 to 240 °F) or other non-toxic
solvent.
c) Clean and flush out the housing with a light
mineral oil.
d) Do not use waste oil to clean the housing.
To clean the bearings:
a) Wipe off as much grease as possible with a
clean lint-free cloth.
b) Brush bearings with hot kerosene (80 to 90 °C/
175 to 195 °F) while gently spinning the outer
bearing ring.
c) Spin each ball to ensure that it is clean.
To remove badly oxidized grease, which refuses to
come off:
a) Support the rotor in a vertical position and
immerse the bearing in hot kerosene or a mixture
of alcohol and light mineral solvent.
b) Gently spin the bearing outer ring.
c) Dry and reflush the bearing with clean light oil.
d) It is important not to under or over grease the
bearings as this will lead to over heating and
premature failure. It is recommended that the
bearings be filled with grease using a suitable
spatula. In addition the housings should be no
more than half filled.
6.3 Spare parts
6.3.1 Ordering of spares
Flowserve keep records of all pumps that have been
supplied. When ordering spares the following
information should be quoted:
1) Pump serial number
2) Pump
size
3) Part name – taken from section 8
4) Part number – taken from section 8
5) Number of parts required
The pump size and serial number are shown on the
pump nameplate.
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 pump’s safety certification.
6.3.2 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 6 monthly intervals.