Goulds Pumps VRS - IOM - Manual (Page 26)

MAINTENANCE OF BEARINGS
The bearings have been adequately greased prior to
shipment. Under normal operating conditions, add grease
monthly or after 500 operating hours, whichever occurs
first. Add approximately (4) pumps to the inboard fitting
and outboard fitting. Use a lithium based NLGI 2 grease to
match the type used when the pump was initially built.
$
CAUTION
Never mix greases of different consistency (NLGI 1 or
3 with NLGI 2) or different thickener soaps (sodium or
calcium with lithium). The consistency usually
becomes softer and will not provide adequate
lubrication to the bearings.
NOTE: When regreasing there is a possibility of
impurities entering the bearing housing. The grease
container, the greasing device, and the fittings must be
clean.
Acceptable Greases:
Shell Alvania No. 2
Mobil Mobilux EP No. 2
Texaco Multifak No. 2
Sun Oil Co. Prestige No. 42
American Oil Co. Amolith Grease No. 2
MAINTENANCE OF SEALS
When it becomes necessary to replace the bearing housing
seals, the housing and the bearings should be flushed clean
with a solvent and repacked with new grease. Overpacking
results in excessive bearing temperature.
MAINTENANCE OF DRIVE
Well designed and properly installed V-belt drives are
capable of running for years without maintenance. There
are a few points that should be checked periodically.
•
Sheave Alignment - Alignment must be maintained
for full power transmission, minimum vibration, and
long drive life.
•
Belt Installation - When installing new belts, shorten
the center distance between sheaves so that the belts
can be placed on the sheave without the use of force.
Never ‘roll’ or ‘pry’ the belts into place, as this could
damage the belt cords.
•
Check Belt Fit - Regardless of the belt section used,
the belt should never be allowed to bottom in the
groove. This will cause the belts to lose their wedging
action and allow slippage. Replace such sheaves or
belts.
•
Maintain Proper Belt Tension - Tension is essential
for long belt life. Improper tension could cause belt
fatigue and/or hot bearings. Methods of determining
proper belt tension can be obtained from the drive
manufacturer.
•
Use Belt Guards - Belt guards protect personnel from
danger and the drive from contamination. Inspect
periodically to assure that belts do not rub against
guard.
•
Keep Belts Clean - Dirt and grease reduce belt life.
Belt dressing affects performance only temporarily
and is never recommended. Maintaining a clean drive
is a better idea.
If any questions arise pertaining to the drive limitations,
consult the manufacturer.
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VRS IOM - 5/08