HP FM Centrifugal Pump PCN=71576526 - Manual (Page 24)

FM USER INSTRUCTIONS ENGLISH 71576526 - 03/07
Page 24 of 32
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6.2.2 Routine inspection (daily/weekly)
The following checks should be made
and the appropriate action taken to remedy any
deviations:
a) Check the behavior of the pump while running:
noise level, vibrations, bearings temperature,
flow rate and pressure.
b) Pump fitted with a stuffing box: leakage of 20
drops per minute.
c) Pump fitted with a mechanical seal: no leakage.
d) Check the level and condition of oil lubricant. On
grease lubricated pumps, check running hours
since last recharge of grease or complete
grease change.
6.2.3 Periodic inspection (6 monthly)
Check pump running records for hourly usage to
determine if bearing lubricant requires changing.
If a check shows a bad running of the
motor pump unit, the user must:
a) Refer to the "fault finding chart" chapter 7 of this
leaflet to apply the recommended solutions.
b) Ensure that your equipment corresponds to the
arrangements of this leaflet
c) Contact Flowserve after-sales Department if the
problem persists.
6.2.4 Mechanical seals
The current maintenance is limited to seal control. It
is necessary to detect any small leakage which
announces the beginning of the deterioration of
friction faces or secondary seal elements (rings,
bellows, synthetic membranes). It is advisable to
stop the pump as soon as possible. Have an
approved seal vendor replace or repair the seal.
4213 4200 2445
4240 4610
6.2.5 Gland packing
6.2.5.1 Pump fitted with a packed gland
A well run in and correctly adjusted packing gland
requires little maintenance
If, after some time, the leakage becomes too great,
the gland should be tightened again in order to
return these to a normal level.
If re-tightening is not possible, new packing must be
installed.
6.2.5.2 Gland packing inspection and removal
a) Remove the shield guards
b)
Slide back the gland
c) Remove the packing rings with an extractor
designed for this purpose (including the lantern
ring if it exists; note its position and its direction
of rotation).
d) Inspect the state of the sleeve surface; the
presence of many marked grooves will indicate
that it must be replaced.
e) Carefully clean the different pieces of the
packing gland.
6.2.5.3 Gland packing fitting
If the packing is supplied as cord the packing must
be cut so that the external diameter is lightly
tightened and there is an initial gap between the
sleeve and the packing ring.
For that purpose, wind the packing helically around
the shaft sleeve or a chuck of the same diameter.
(Take precautions to avoid damaging sleeve).
Example of straight cut Example of bevel cut
Ensure a tightening on the stuffing
box housing and not on the sleeve.
SETTING OF PACKING
Follow the instructions:
a) Assembly of the packing in S.
b)
Staggering by about 90° between two pickings.
c) Assemble packing after packing.