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SECTION
5
DRIVE
~WARNING
~
DO
NOT
OVER TENSION
DRIVE
BELTS
AS
PERMANENT
DAMAGE
TO COMPRESSOR
AND
MOTOR
BEARING
AND
SHAFT
CAN RESULT.
Proper drive belt tension and alignment are provided at the
factory, however, good practice dictates checking the drive
after shipment
and before initial start-up. Sheaves should
align straight across the front with a straight edge. proper
tension will allow belts to deflect approximately
1/2 inch at
center
of
span
when
depressed
with
moderate
pressure
with
the
thumb.
Best
tension
is just
enough
tension
to
keep
belts
from
"squealing"
on
start-up.
Belts
can
be
changed
when
necessary
by
removing
fan
shroud
and
belt
guard,
loosening
motor
to motor
base
mounting
nuts and moving
motor
in, using
two adjusting
screws
in motor
base.
To
tighten
new
belts,
reverse
this
procedure.
DO
NOT
OVERTIGHTEN.
New
belts
will
sometimes
stretch
after several
hours
operation
and should
be
checked.
1-3-603
Section
5
Page
1
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