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507232-04 7/2017
BLOWER ASSEMBLY
BLOWER
MOTOR
PULLEY
BELT TENSION
ADJUSTMENT
BOLTS
MOTOR
SUPPORT
PLATE
TO TIGHTEN BELT
Turn lower nuts on both
adjustment bolts clock
wise. Secure support
plate with upper nuts.
TO LOOSEN BELT
Turn upper nut on both ad
justment bolts counter
clockwise. Secure support
plate with lower nuts.
FIGURE 25
LOWER
ADJUSTMENT
NUT
UPPER
ADJUSTMENT
NUT
LOCKWASHER
Blower Operation and Adjustments
IMPORTANT
Three phase scroll compressors must be phased se
quentially for correct compressor and blower rota
tion. Follow “COOLING START-UP” section of instal
lation instructions to ensure proper compressor and
blower operation.
A-Blower Belt Adjustment
Maximum life and wear can be obtained from belts only if
proper pulley alignment and belt tension are maintained.
Tighten belt as shown in figure 25.
IMPORTANT
After a 24-48 hour period of operation, tighten new
belts again. This will allow belt to stretch and seat
into grooves.
Make sure blower and motor pulley are aligned as shown in
figure 26. Also make sure motor support plate is level. See
figure 27.
FIGURE 26
PULLEY ALIGNMENT
BELT
BLOWER
PULLEY
MOTOR
PULLEY
NOT ALIGNED
ALIGNED
BLOWER MOTOR SUPPORT PLATE
FIGURE 27
Measure the position of the nuts on the adjusting
screw to make sure the support plate is level.
Tighten upper and lower adjustment nuts.
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