Filter
Top Products
WC-IOM-7 • Packaged Heat Pump 41
ƽWARNING
Rotating Components!
During installation, testing, servicing and troubleshooting of this product it may
be necessary to measure the speed of rotating components. Have a qualified or
licensed service individual who has been properly trained in handling exposed
rotating components, perform these tasks. Failure to follow all safety
precautions when exposed to rotating components could result in death or
serious injury.
Make sure all personnel are standing clear of the unit before proceeding. The
system components will start when the power is applied.
Fan Belt Adjustment - Belt Drive Units
The fan belts must be inspected periodically to assure proper unit operation.
Replacement is necessary if the belts appear frayed or worn. Units with dual belts
require a matched set of belts to ensure equal belt length.
When removing or installing the new belts, do not stretch them over the sheaves.
Loosen the belts using the belt tension adjustment bolts on the motor mounting
base.
Once the new belts are installed, using a Browning or Gates tension gauge (or
equivalent) illustrated in Figure 16; adjust the belt tension as follows;
1. To determine the appropriate belt deflection;
a. Measure the center-to-center shaft distance (in inches) between the fan
and motor sheaves.
b. Divide the distance measured in Step 1a by 64; the resulting value
represents the amount of belt deflection that corresponds to the proper
belt tension.
2. Set the large O-ring on the belt tension gauge at the deflection value
determined in Step 1b.
3. Set the small O-ring at zero on the force scale of the gauge plunger.
4. Place the large end of the gauge at the center of the belt span; then depress
the gauge plunger until the large O-ring is even with the top of the next belt
or even with a straightedge placed across the fan and motor sheaves. Refer
to Figure 16.
5. Remove the belt tension gauge. The small O-ring now indicates a number
other than zero on the plunger’s force scale. This number represents the force
(in pounds) required to give the needed deflection.
6. Compare the “force” scale reading (Step 5) with the appropriate “force”
value listed in Table 6. If the “force” reading is outside the range, readjust the
belt tension.
Maintenance