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42 Packaged Heat Pump • WC-IOM-7
Maintenance
Note: Actual belt deflection “force” must not exceed the maximum “force”
value shown in Table 6.
7. Recheck the belt tension at least twice during the first 2 to 3 days of
operation. Belt tension may decrease until the new belts are “run in”.
Monthly Maintenance
ƽWARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing.
Follow proper lockout/tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power before servicing could
result in death or serious injury.
Before completing the following checks, turn the unit OFF and lock the main
power disconnect switch open. Failure to disconnect power before servicing can
cause severe personal injury or death.
Table 6. Belt tension measurement and deflection ranges
Deflection Force (Lbs.)
Belts
Cross
Section
Small
P.D
Range
Super Gripbelts Gripnotch Steel Cable
Gripbelts
Min. Max. Min. Max. Min. Max
A
3.0 - 3.6 3 4 1/2 3 7/8 5 1/2 3 1/4 4
3.8 - 4.8 3 1/2 5 4 1/2 6 1/4 3 3/4 4 3/4
5.0 - 7.0 4 5 1/2 5 6 7/8 4 1/4 5 1/4
B
3.4 - 4.2 4 5 1/2 5 3/4 8 4 1/2 5 1/2
4.4 - 5.6 5 1/8 7 1/8 6 1/2 9 1/8 5 3/4 7 1/4
5.8 - 8.8 6 3/8 8 3/4 7 3/8 10 1/8 7 8 3/4
Figure 16. Belt tension gauge