Flowserve Gearex Rotary Gear Pumps External and Internal Bearing - Manual (Page 29)

EXTERNAL GEAREX USER INSTRUCTIONS ENGLISH 71569246 (2167B-E1)
Flowserve Pump Division 29
®
The oil filled bottle should then be refitted so as to
return it to the upright position. Filling should be
repeated until oil remains visible within the bottle.
Other drivers and gearboxes, if appropriate, should be
lubricated in accordance with their manuals.
In the case of product lubricated
bearings the source of product supply should be
checked against the order. There may be
requirements for an external clean supply, particular
supply pressure or the commencement of lubrication
supply before pump start-up.
5.1.3.2 Internal bearing pump
Bearing lubrication is provided by the liquid being
pumped. To further ensure circulation of fluid through
the bearings, internal ports are provided in the bearing
housings. These ports are located on the suction side
of the pump only.
5.2 Pump lubricants
5.2.1 Typical oils
Company
Column “A” Column “B” Column “C”
Mobil Mobil DTE Oil BB MOBILGEAR 626 Mobil DTE Oil HH
Shell OMALA Oil 220 OMALA Oil 68 OMALA Oil 460
Sunoco SUNVIS 790 (220) SUNVIS 747 (46) SUNVIS 7150
Amoco RYKON Oil No. 220 AMOGEAR No. 68 American Industrial Oil No. 460
Texaco REGAL R&O 220 MEROPA 150 REGAL R&O 460
Arco PENNANT NL 220 PENNANT NL 68 RUBILENE 460
Chevron AW Machine Oil 220 EP Industrial Oil 46x NL Gear Compound 460
Exxon TERESSTIC N220 SPARTAN EP 68 TERESSTIC 460
*Esso TERESSO N220 SPARTAN EP 68 CYLESSO TK 460
Petro Canada GIREX 220 GIREX 68 GIREX 320
*Imperial Oil Limited (Canada)
5.2.2 Recommended fill quantities for external
bearing pump
Refer to section 3.4 Performance and operating
limits.
5.2.3 Checking running oil level in gear housing
If the oil reservoir is filled to the level indicated on the
column gauge (when pump is at running speed),
ample lubrication will be provided for the timing gears
and bearings contained in the housing.
However, if field operating conditions (temperature,
etc.) vary considerably from standard, the level must
be checked internally to insure proper lubrication.
Follow the procedure as outlined below.
a) Remove the filler vent plug.
b) With the pump running at rated speed and
operating temperature, the timing gears should
pick up enough oil to create a fine mist
throughout the gear case. Too much oil will
cause overheating. Too little oil will cause gear
and bearing failure. Adjust oil level until fine mist
is present.
c) Replace vent filler and pipe plugs.
d) Repeat procedure periodically to ensure proper
lubrication and extended pump life.
5.2.4 Lubrication schedule for
external bearing pump
5.2.4.1 Requirements for oil lubricated bearings
Normal oil change intervals are 4 000 operating hours
or at least every 6 months. For pumps on hot service
or in severely damp or corrosive atmosphere, the oil
will require changing more frequently. Lubricant and
bearing temperature analysis can be useful in
optimizing lubricant change intervals.
The lubricating oil should be a high quality mineral oil
having foam inhibitors. Synthetic oils may also be
used if checks show that the rubber oil seals will not
be adversely affected.
The bearing temperature may be allowed to rise to
50 ºC (122 ºF).above ambient, but should not exceed
82 ºC (180 ºF). A continuously rising temperature, or
an abrupt rise, indicate a fault.