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Gorman-Rupp Pumps T6A3-B /F,/FM User Manual

Page 15

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OM-01046

T SERIES

PAGE B - 8

INSTALLATION

MISALIGNED:

SHAFTS

NOT PARALLEL

MISALIGNED:

SHAFTS

NOT IN LINE

ALIGNED: SHAFTS

PARALLEL AND

SHEAVES IN LINE

Figure 4C. 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.

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 (see the following procedure for measuring
belt tension). Thereafter, check and re‐tension if re­
quired 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.