Flowserve MF - Manual (Page 25)

MF USER INSTRUCTIONS ENGLISH 71569191 12/04
Page 25 of 50
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The grease flowing out of the bearing
frame may be hot and under pressure. Bearings may
run slightly hot immediately after adding new grease.
Monitor the bearing temperatures until they return to
normal. Any marked increase in the temperature of
the bearings after return to normal operation may
indicate the presence of dirt in the bearing,
insufficient cleaning, improper re-assembly, or a
faulty/damaged bearing. In this case the pump
should be immediately stopped and the cause of the
trouble investigated.
5.2.4 Bearing operating temperatures
The maximum operating temperatures for anti-friction
bearings will differ from unit to unit. In general,
bearing frames 3A, 4A and 5A bearings can run up to
16 o C (60 o F) and 4T,5T, 6A and 7A sizes can run up
to 38 o C (100 o F) above ambient. This should be no
cause for alarm. However, continuously rising
temperatures, or an abrupt temperature rise, are
indicative of possible trouble.
These symptoms require immediate stopping of the
pump and a thorough investigation to determine the
cause of the trouble.
5.2.5 Selection of oil lubricants
The bearings are to be lubricated with a premium
quality paraffinic based turbine or R&O lubricating oil.
The oil should have an ISO 68 Grade, an
approximate Viscosity Index (VI) of 100, a pour point
of -30 o C (-22 o F), and a Timken OK load rating of
16kg (35 lbs) minimum. The oil should shed water
and contain oxidation, rust, and foam inhibitors. The
following oils are acceptable. Others oils meeting the
above requirements may also be used.
5.2.5.1 Recommended oil lubricants
AMOCO Amokon 68 / American Industrial Oil 68
CHEVRON Turbine Oil GST 68 / Machine Oil R&O 68
EXXON Terrestic 68
SHELL Turbo T 68
TEXACO Regal R&O 68
BP Turbinol Select-68
5.2.5.2 Recommended oil fill quantities
Fr.
No
Initial
Fill Vol.
m 3
(fl·oz.)
Oil Level
mm
(in.)
±3 mm (±0.125 in.)
3A 0.0004
(13) N/A-Built with constant level oiler.
4A 0.0006
(22) N/A-Built with constant level oiler
5A 0.0009
(30) N/A-Built with constant level oiler
6A 0.0016
(55) 61 (2.4)
7A 0.0035
(120) 71(2.8)
The oil level shown in the table above is applicable
to bearing frames equipped with Timken bearings,
which have externally mounted sight glasses and is
the distance from oil level to the pup shaft centerline.
5.2.6 Recommended grease lubricants
The bearings are to be lubricated with a premium
quality Lithium based NGLI # 2 grease suitable for
anti-friction bearings use. The grease should have a
viscosity range of 150 to 220 cSt (mm 2 /sec) at 40 o C
(100 o F) and Timken load rating of 16 kg (35 lb.)
minimum. The grease should contain rust and
oxidation inhibitors and extreme pressure additives.
See table 5.2.6.1 for recommended grease types.
Equivalents may also be used.
5.2.6.1 Recommended grease lubricants
AMOCO Amolith EP2
CHEVRON Duralith EP2
EXXON Lidok EP2
MOBIL Mobilux EP2
SHELL Alvania EP2
TEXACO Multifak EP2
BP Energrease LS EP 2