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REPAIR:
This repair manual is applicable to pump Models 1920, 1920F, 1910 and 1940. All photos illustrate Model 1910
except where noted.
SERVICE:
Your Fairbanks Nijhuis™ pump requires no maintenance other than periodic inspection, lubrication and occasional
cleaning. The intent of inspection is to prevent breakdown, thus obtaining optimum service life.
LUBRICATION OF BEARINGS:
Regreasable bearings will require periodic lubrication and can be accomplished by using the zerk or lubrication fittings
in the bearing cartridge. Lubricate the bearings at regular intervals using a grease of high quality. Lithium, lithium
soda or calcium base grease is recommended as lubricants for pumps operating in both wet and dry locations. Mixing
of different brands of grease should be avoided due to possible chemical reactions between the brands which could
damage the bearings. Accordingly, avoid grease of vegetable or animal base which can develop acids, as well as
grease containing rosin, graphite, talc and other impurities. Under no circumstances should grease be reused.
Overlubrication should be avoided as it may result in overheating and possible bearing failure. Under normal
application, adequate lubrication is assured if the amount of grease is maintained at 1/3 to 1/2 the capacity of the
bearing and adjacent space surrounding it.
In dry locations, each bearing will need lubrication at least every 4,000 hours of running time or every 6 to 12 months,
whichever is more frequent. In wet locations the bearings should be lubricated at least after every 2,000 hours of
running time or every 4 to 6 months, whichever is more frequent. A unit is considered to be installed in a wet location
if the pump and motor are exposed to dripping water, to the weather, or to heavy condensation such as is found in
unheated and poorly ventilated underground locations.
At times it may be necessary to clean the bearings due to
accumulated dirt or deteriorated lubricants. This can be
accomplished by flushing the bearing with a light oil heated to
180 to 200°F while rotating it on a spindle. Wipe the
bearing housing with a clean rag soaked in a cleaning solvent
and flush all surfaces.
Dry bearing thoroughly before relubricating. Compressed air
can be used to speed drying, but care should be taken not to let
bearings rotate while being dried.
Use normal fire caution procedures when using any
petroleum cleaner.
Model 1920 pumps are available with two options for lubricating
the shaft bearings. They are:
1. Regreasable (standard)
2. Oil lubrication
CAUTION:
1900 Series Horizontal Splitcase Pumps
NOTE:
Model 1910
A. Complete pump assemblies.
Instruction and Repair Manual
Model 1940
Models 1920
and 1920F
04/30/14
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