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Service
Service Hints
1. Caution homeowner to maintain clean air filters at all times.
Also, not to needlessly close off supply and return air registers.
This reduces air flow through the system, which shortens
equipment service life, as well as, increasing operating costs.
2. Check all power fuses or circuit breakers to be sure that they are
the correct rating.
3. Periodic cleaning of the outdoor coil to permit full and
unrestricted air flow circulation is essential.
Fan Blade Setting Dimensions
Shown in Figure 12 are the correct fan blade setting dimensions for
proper air delivery across the outdoor coil.
Any service work requiring removal or adjustment in the fan and/
or motor area will require that the dimensions below be checked
and blade adjusted in or out on the motor shaft accordingly.
Figure 12 — Fan Blade
Table 9 — Fan Blade Setting Dimensions
Model
CTHAC181
CTHAC241
CTHAC301
CTHAC361
CTHAC421
CTHAC481
CTHAC601
A
Dimension A
3"
3-1/4"
Page 13
Manual 2100-292
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