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Gorman-Rupp Pumps VG6D3-B 1188889 and up User Manual

Page 12

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OM−02817

VG SERIES

PAGE B − 6

INSTALLATION

straightedge to measure the amount of misalign-
ment.

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 3C). In drive
systems using two or more belts, make certain that
the belts are a matched set; unmatched sets will
cause accelerated belt wear.

MISALIGNED:

SHAFTS

NOT PARALLEL

MISALIGNED:

SHAFTS

NOT IN LINE

ALIGNED: SHAFTS

PARALLEL AND

SHEAVES IN LINE

Figure 3C. 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; 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.