Gorman-Rupp Pumps V3A60-B 1321968 and up User Manual
Page 15
OM−05815
ULTRA V SERIES
PAGE B − 8
INSTALLATION
Tighten the belts in accordance with the belt manu-
facturer’s instructions. If the belts are too loose,
they will slip; if the belts are too tight, there will be
excessive power loss and possible bearing failure.
Select pulleys that will match the proper speed ra-
tio; overspeeding the pump may damage both
pump and power source.
Do not operate the pump without the
guard in place over the rotating parts
.
exposed rotating parts can catch cloth-
ing, fingers, or tools, causing severe in-
jury to personnel.
DRIVE BELT TENSIONING
General Rules of Tensioning
For new drive belts, check the tension after 5, 20
and 50 hours of operation and re-tension as re-
quired. Thereafter, check and re-tension if required
monthly or at 500 hour intervals, whichever comes
first.
Ideal drive belt tension is the lowest tension at
which the belt will not slip under peak load condi-
tions. Do not over-tension drive belts. Over-ten-
sioning will shorten both drive belt and bearing life.
Under-tensioning will cause belt slippage. Always
keep belts free from dirt, grease, oil and other for-
eign material which may cause slippage.