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„ BELT ADJUSTMENT
CHECKING BELT TENSION - Check belt tension occasionally,
especially if looseness is suspected. A quick check to determine if
adjustment is proper may be made by observing the slack side of
the belt for a slight bow when the unit is in operation. If a slight bow
is evident, the belt is usually adjusted satisfactorily.
TENSIONING BELTS - Belt tensioning can be achieved by loosening
the motor anchor screws, pushing the motor away from the pump,
and retightening the motor anchor screws. The motor can be easily
moved by placing a prying tool beneath it. A commercially available
spreader or other belt tensioning device can also be helpful should
tensioning be necessary.
Follow the procedures outlined below to correctly set and measure
belt tension.
1. Lay a straight edge across the top outer surface of the belt drive
from pulley to sheave.
2. At the center of the span, perpendicular to the belt, apply
pressure to the outer surface of the belt with a tension gauge.
Force the belt to the deflection indicated in the table at right.
Compare the reading on the tension gauge to the table below.
Deflection in Inches
Min. Tension (Lbs.)
0.17
Ensure the pulley and sheave are properly aligned and the motor
anchor screws are adequately retightened prior to restarting the
compressor.
Improper pulley/sheave alignment and belt tension can result
in motor overload, excessive vibration, and premature belt
and/or bearing failure.
To prevent these problems from occurring, ensure the pulley
and sheave are aligned and belt tension is satisfactory after
installing new belts or tensioning existing belts.
EN-8
Max. Tension (Lbs.)
3.0
6.0
CAUTION
„ TANK INSPECTION
The life of an air receiver tank is dependent upon several factors
including, but not limited to, operating conditions, ambient
environments, and the level of maintenance. The exact effect of
these factors on tank life is difficult to predict; therefore, Ingersoll
Rand recommends that you schedule a certified tank inspection
within the first five years of compressor service. To arrange a tank
inspection, contact the nearest Ingersoll Rand Customer Center or
distributor, or call 1-800-AIR SERV.
If the tank has not been inspected within the first 10 years of
compressor service, the receiver must be taken out of service until it
has passed inspection. Tanks that fail to meet requirements must be
replaced.
Failure to replace a rusted air receiver tank could result in
air receiver tank rupture or explosion, which could cause
substantial property damage, severe personal injury, or death.
Never modify or repair tank. Obtain replacement from service
center.
WARNING
80444425 Rev. D
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