Flowserve MF - Manual (Page 23)

MF USER INSTRUCTIONS ENGLISH 71569191 12/04
Page 23 of 50
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5.2 Pump lubricants
Determine the mode of lubrication of the pump set,
e.g. grease or oil lubrication.
For oil lubricated pumps, fill the
bearing housing with correct grade of oil to the
correct level, check sight glass.
Oil quantities are provided in section 5.2.5.2. Grease
lubricated pumps and electric motors are supplied
pre-greased. See section 5.2.6.2 for approximate
grease filling quantities information. Other drivers
and gearboxes, if appropriate, should be lubricated in
accordance with their User Instructions.
5.2.1 Bearings-oil lubricated
MF pumps can be furnished with oil lubricated
bearings at the customers request. However,
although the oil and grease lubricated bearing frames
are physically interchangeable in whole, individual
parts may or may not be interchangeable. Check
with the nearest Flowserve Sales Representative to
determine inter-changeability of the parts.
5.2.1.1 Constant level oiler for frames 3A,4A & 5A
For 3A, 4A and 5A frame MF pumps externally
mounted constant level oiler is used. The rotating oil
slingers coat the inside of the bearing housing with oil
droplets. No special oil level adjustment is necessary
in this type of oiling system. The constant level oiler
maintains the oil level automatically.
VENT CAP
OIL SLINGER
CONSTANT LEVEL
OILER
Oil circulation and lubrication is achieved by the
bearing rollers pumping oil through the bearings
towards the covers. During operation, a level drop of
up to 6 mm (0.25 in.) can occur due to this bearing
pumping action. If oil is added during operation, do
not adjust to the static oil level as this over-oiling may
cause the bearing end cover seals to leak.
5.2.1.2 Filling the constant level oiler
Unscrew the bottle from the oiler, then fill with the
recommended oil. Allow the oil to flow until the oil
level in the bottle reaches and maintains constant
level. Make sure the bottle is in the lowest position
while filling so that the correct amount of oil enters
the housing cavity. It will be necessary to refill the
bottle several times.
Do not fill through the air vent opening
on the top of the bearing frame. Do not overfill the
reservoir to avoid overheating of bearings.
Before starting the pump, check the
bearing frame oil level and add oil to the bearing
frame as necessary. Refer to the table in sec 5.2.5.2
for the correct bearing frame oil level. Assuming that
the oil level in the bearing frame is properly
maintained and contamination is minimal.
Oil lubricated anti-friction bearings are
factory lubricated to prevent rusting for a short period
of time only. Immediately upon receiving equipment,
fill the oil reservoir to the proper level with the proper
lubricant. If the units are to be stored longer than six
months, fill the bearing frame cavity with a good
quality R&O oil capable of providing rust protection to
the parts. See section 2.4.3 for details on Long Term
Storage .
5.2.2 Externally mounted oil level indicator for
frame 6A and 7A pumps
Pumps are equipped with an externally mounted oil
level sight gauge and vent cap as shown in figure .
Introduce oil into the bearing frame by removing the
vent and fill the bearing housing to the level as given
in Table 5.2.5.2. The oil level measured from the
centerline of the shaft. See detail in section
5.2.2.1below. After filling with oil, mark the correct
static oil level on the sight glass, and maintain this
level to within ±3 mm (±0.125 in.).