Gorman-Rupp Pumps 62E31-B All serial numbers - Manual (Page 13)

OM−04020 60 SERIES PUMPS
PAGE B − 7 INSTALLATION
straightedge to measure the amount of misalign-
ment.
Figure 5. Aligning Non-Spider Type Couplings
V-Belt Drives
When using V-belt drives, the power source and
the pump must be parallel. Use a straightedge
along the sides of the pulleys to ensure that the pul-
leys are properly aligned (see Figure 6). In drive
systems using two or more belts, make certain that
the belts are a matched set; unmatched sets will
cause accelerated belt wear.
SHAFTS
NOT
PARALLEL
SHAFTS
NOT
IN LINE
MISALIGNED
SHAFTS PARALLEL
AND
SHEAVES IN LINE
ALIGNED
Figure 6. Alignment of V-Belt Driven Pumps
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; over speeding 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.