In-line lubrication amounts – Flowserve Mark 3 Sealed Metallic Durco User Manual
Page 38
MARK 3 USER INSTRUCTIONS ENGLISH 71569102 01-13
Page 38 of 72
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Figure 5.8: Horizontal pump shield orientation
Figure 5.9: In-line 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. In the
case of the In-Line pump the bearings are packed
with Exxon Unirex N3 grease. For relubrication, a
grease with the same type base (lithium) and oil
(mineral) should be used. To regrease, remove the
pipe plug from both the inboard and outboard bearing
location. (See figure 5.10.) 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 5.10: Regreasable configuration
The amount of grease required for horizontal pumps
is shown in figure 5.11
Figure 5.11 Grease lubrication amounts
Horizontal lubrication amounts
Housing
Initial lube
Relubrication
Group 1 inboard
Until grease
comes out of plug
7.5 cm
3
(0.46 in.
3
)
Group 1 outboard
14 cm
3
(0.85 in.
3
)
Group 1 duplex
34 cm
3
(2.1 in.
3
)
17 cm
3
(1.0 in.
3
)
Group 2 inboard
Until grease
comes out of plug
17 cm
3
(1.0 in.
3
)
Group 2 outboard
28 cm
3
(1.7 in.
3
)
Group 2 duplex
68 cm
3
(4.1 in.
3
)
34 cm
3
(2.1 in.
3
)
Group 3 inboard
Until grease
comes out of plug
30 cm
3
(1.8 in.
3
)
Group 3 outboard
54 cm
3
(3.3 in.
3
)
Group 3 duplex
115 cm
3
(7.0 in.
3
)
60 cm
3
(3.7 in.
3
)
In-Line lubrication amounts
Housing location
New bearing
Relubrication
Group 1 inboard
10 cm
3
(0.6 in.
3
)
7.5 cm
3
(0.46 in.
3
)
Group 1 outboard
20.5 cm
3
(1.3 in.
3
)
14 cm
3
(0.85 in.
3
)
Group 2 inboard
16.4 cm
3
(1.0 in.
3
)
17 cm
3
(1.0 in.
3
)
Group 2 outboard
47.4 cm
3
(2.9 in.
3
)
28 cm
3
(1.7 in.
3
)
If new bearings are not lubricated, they should be packed prior to
installation and the housing lubricated as described above.
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.
Grease for life
5.2.2.2
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
To further limit dirt ingress and dewpoint issues within
the bearing housing, a
1
/
2
” connection is available for a
low pressure instrument air or nitrogen supply where
applicable.
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 4.6.6.7, 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.