Flowserve Mark 3 - Manual (Page 22)

USER INSTRUCTIONS MARK 3 High Silicon Iron ENGLISH 71569249 09-04
®
Figure 5-5: Maximum external housing
temperatures
Lubrication Temperature
Oil bath 82 °C (180 °F)
Oil mist 82 °C (180 °F)
Grease 94 °C (200 °F)
The maximum temperature that the
bearing can be exposed to is 105 °C (220 °F).
Figure 5-6: Lubrication intervals*
Lubricant Under 71 °C
(160 °F) 71-80 °C
(160-175 °F) 80-94 °C
(175-200 °F)
Grease 6 months 3 months 1.5 months
Mineral oil 6 months 3 months 1.5 months
Synthetic oil** 18 months 18 months 18 months
* Assuming good maintenance and operation practices, and no
contamination.
** May be increased to 36 months with ANSI 3A™ power end.
*** Bearing Temperatures up to 16°C (30 °F) higher than housing.
5.2.2 Grease
5.2.2.1 Regreasable
Single shielded regreasable bearings
When the grease lubrication option is specified,
single shielded bearings, grease fittings and vent pipe
plugs are installed inboard and outboard.
Figure 5-7: Horizontal pump shield orientation
Horizontal pump bearings are packed with Exxon
POLYREX EM grease prior to assembly. For
relubrication, a grease with the same type base
(polyurea) and oil (mineral) should be used. To
regrease, remove the pipe plug from both the inboard
and outboard bearing location. (See figure 5-9.)
After relubricating the bearings three times, it is
typically recommended that the bearing housing is
cleaned out.
To regrease bearings under coupling
guard, stop pump, lock the motor, remove coupling
guard, and then regrease the bearings.
Figure 5-8: Regreasable configuration
Figure 5-9: Horizontal lubrication amounts
Housing Initial lube Relubrication
Group 2 inboard
Until grease
comes out of plug
17 cm 3 (1.0 in. 3 )
Group 2 outboard
Until grease
comes out of plug
28 cm 3 (1.7 in. 3 )
Group 2 duplex 68 cm 3 (4.1 in. 3 ) 34 cm 3 (2.1 in. 3 )
Do not fill the housing with oil when
greased bearings are used. The oil will leach the
grease out of the bearings and the life of the bearings
may be drastically reduced.
5.2.2.1 Grease for life
Double shielded or double sealed bearings
These bearings are packed with grease by the
bearing manufacturer and should not be relubricated.
The replacement interval for these bearings is greatly
affected by their operating temperature and speed.
Shielded bearings typically operate cooler.
5.2.3 Oil mist
The inlet port for all horizontal pumps is the plugged
½ in. NPT located at the top of the bearing housing.
A vent fitting has been supplied on the bearing carrier
as well as a plugged ¼ in. NPT bottom drain on the
bearing housing. See section 4.6.6.5, Oil mist
lubrication system. Do not allow oil level to remain
above the center of the bearing housing sight glass
window with purge mist (wet sump) systems.
The optional oil slinger must not be used with an oil
mist system.
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