Pentair Berkeley Manual Del Usuario página 7

Installation • Belt Drive
A Incorrect
Centerline - A of each shaft and pulley must
be parallel for proper alignment.
ALIGNMENT
Drive belt can catch and trap clothing
or body. Belt guard must ALWAYS be in place when
pump is running. Belt guard is not shown for pictorial
clarity.
• Drive and pump shaft center-lines (A) must be
parallel as shown. Belt center-lines (B) must be
straight as shown.
• When installing belts, move the driver toward the
pump to allow belts to be placed on pulley. Then,
move the driver away from pump to obtain proper belt
tension as described below.
TENSION
• Multiple belt spans must be equal tension in all belts.
Proper belt tension varies with the size of belt being
used, however a general rule is:
Belts are properly tensioned when one belt can be
depressed one belt thickness at the center of the
span when pressing with thumb.
Another method is that a properly tensioned belt can
be rotated (twisted) one-quarter revolution at the
center of span.
A
B
Centerline
B
Incorrect
Centerline - B represents center of belt and
pulley.This centerline must be straight for
proper alignment.
Centerline
B
A
NOTICE: Belts must be tight enough to prevent slip-
ping during operation. Loose belts result in early belt
failure and reduced performance. However, excessive
tightness of belts will result in overheating of the belts
and excessive bearing load in the pump and driver.
• Most Vee belts will stretch slightly after initial
installation. After a short period of operation,
re-check belt tension and adjust as necessary.
B
6027 0609
Center of Span.
Slack should be not more
than one belt thickness.
A
Proper tension allows one-
A
quarter revolution of belt.
A-A
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