Flowserve ESP2 - Manual (Page 29)

ESP2 USER INSTRUCTIONS ENGLISH PCN-(71569292) 4-12
Page 29 of 64
5.2 Bearing Lubrication
Operation of the unit without proper
lubrication can result in overheating of the bearings,
bearing failures, pump seizures and actual breakup of
the equipment exposing operation personnel to
personal injury.
Check to see that connections are made to
lubrication fittings at pump manifold (3869) on
mounting plate (6110).
5.2.1 Line Shaft Bearings
Check to see that no damage has occurred to any
lubrication lines above and below the mounting plate
(6110) during shipment or installation. For number of
bearings, refer to Figure 5-5 on next page.
5.2.1.1 External Flush Lubrication
a)
Clean cool [<70C (160F)] liquid from an external
source must be used when pumps are furnished
with external flush lubrication connections.
b) Check to see that connections are made to
lubrication fittings on pump manifold (3869) on
mounting plate (6110) and that 1.9 LPM (0.5
gpm) of flushing fluid per bearing (See Figure 5-
5) at 1.4 kg/cm
2
(20 PSIG) above maximum
sump pressure.
It is absolutely necessary that rubber
bearings be wet at all times during operation.
5.2.1.2 Product Lubrication
When conditions warrant, the pump can be furnished
with provisions for pumped product bearing
lubrication. This is accomplished by means of a
lubrication line from the discharge flange of the pump
casing (1100) to the adapter bearing (3020.2), while
the rest of the lines are run from the manifold (3869)
on the pump mounting plate (2025). In the case of a
pumped-product lubricated pump with separators
furnished, all lube lines will be run from the pump
manifold (3869).
a)
Check to see that connections are made to
lubrication fittings at pump manifold (3869) on
mounting plate (6110) and for the adapter
(1340.1) bearing (3020.2).
b) Check that 1.9 LPM (0.5 gpm) of pumped liquid
per bearing (See Figure 5-5) at 1.4 kg/cm
2 (20
PSIG) for standard product lubricated pumps or
1.8 kg/cm
2
(25 PSIG) for product lubricated with
separators is available.
5.2.1.3 Grease Lubrication
Pumps furnished with grease lubricated shaft
bearings (3020.1&.2) will leave the factory with lube
lines (3840.1) and bearings (3020.1&.2) already
packed with grease. The grease used will be of a
water- resistant nature. Each bearing should be
regreased prior to start-up through the grease fittings
located in the manifold (3869) on the pump mounting
plate (6110). Grease must be insoluble in the liquid
being pumped. The recommended grease to be used
is Keystone 81 EP-2 or an equivalent. Keystone 81
EP-2 is the grease that is packed in the bearing
lubrication lines before the pump leaves the factory.
Consult local lubricant suppliers for the type of grease
most compatible with the liquid being pumped. The
grease lubrication system is the same as the external
flush system with the exception of the manifold
(3869). For grease lubrication the manifold contains
grease fittings while the external flush manifold
contains fluid line taps.
5.2.2 Thrust Bearing
The external thrust bearing will either be a
regreaseable bearing (3031), in which case it will
leave the factory with grease already packed, or it will
be a shielded bearing (greased-for-life). For a
regreaseable thrust bearing, it is suggested that the
bearing be dregreased before starting the unit. A
moisture-resistant, lithium-base grease of Number 2
consistency should be used. A shielded bearing will
not need to be degreased, but will need to be
replaced when it becomes excessively worn.
Any unusual noise or vibration from the thrust
bearing may mean the bearing is ready for replacement
and the pump should be dismantled and bearing
checked, and/or replaced.
5.2.3 Driver Bearings
Driver Bearings should be regreased before starting
the pump. Consult the manufacturer's directions for
lubricating instructions.
FIGURE 5-4: Recommended lubricants
Line Shaft
Bearings
External flush, product being pumped, or
Keystone 81 EP-2 grease or equivalent
Thrust
Bearing and
motor
A moisture-resistant, lithium-base grease of
Number 2 consistency.