Flowserve DS - Manual (Page 26)

DS USER INSTRUCTIONS ENGLISH 71576283 - 02/13
02
Page 26 of 36 flowserve.com
6.2.1 Routine inspection (daily/weekly)
The following checks should be made
and the appropriate action taken to remedy any
deviations:
a) Check operating behavior. Ensure noise,
vibration and bearing temperatures are normal.
b) Check that there are no abnormal fluid or
lubricant leaks (static and dynamic seals) and
that any sealant systems (if fitted) are full and
operating normally.
c) Pump fitted with a stuffing box: leakage of 20
drops per minute.
d) Pump fitted with a mechanical seal: no leakage.
e) Check the level and condition of oil lubricant. On
grease lubricated pumps, check running hours
since last recharge of grease or complete
grease change.
6.2.2 Periodic inspection (six monthly)
a) Check foundation bolts for
security of attachment and corrosion.
b) Check pump-running records for hourly usage to
determine if bearing lubricant requires changing.
c) The coupling should be checked for correct
alignment and worn driving elements.
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.
6.2.3 Grease lubricated anti-friction bearings
Grease lubricated anti friction
bearings are factory lubricated to prevent rusting for
a short period of time only.
a) Before starting the pump, the bearings must be
properly greased.
b) Check the bearings for the first hour or so after
the pump was started to insure proper function.
c) Proper grease lubrication is very important. Anti
friction bearings can be over greased as well as
under greased. The characteristics of the
installation and severity of the service will
determine the frequency of lubrication.
Type of grease:
•
At ordinary room temperatures: Grease N° 2
•
At low ambient temperatures: Grease N° 1
•
For specific recommendations consult a
reputable grease manufacturer.
•
Do not use graphite
a) Move the axial seal ring back so the gap
between pump shaft and bearing cover can be
seen.
b) Connect grease gun to the nipple.
c) Press grease into bearing housing until the first
signs of it appear in the gap between housing
and shaft. Then stop greasing.
The maximum allowable operating temperatures for
anti friction bearings will differ from unit to unit.
Depending on ambient and fluid temperature, the
difference to the bearing housing temperature
should not exceed 50 °C (122 °F).
Continuously rising temperatures and an abrupt
temperature rise are indicative for trouble.
These symptoms require immediate stopping of the
pump and a thorough investigation to determine the
cause of trouble. V-rings should be seated at the
proper distance from the sealing surface to avoid
overheating.