Air Filter; Evaporator Blower And Motor - Carrier SINGLE PACKAGED ELECTRIC COOLING UNITS 50GS Installation And Operating Instructions Manual

Fig. 19—Cooling Charging Chart, 50GS042 Units
Fig. 21—Cooling Charging Chart, 50GS060 Units

AIR FILTER

Never operate the unit without a suitable air filter in the
return-air duct system. Always replace the filter with the same
dimensional size and type as originally installed. See Tables
1 and 2 for recommended filter sizes.
Inspect air filter(s) at least once each month and replace
(throwaway-type) or clean (cleanable-type) at least twice during
each heating and cooling season or whenever the filter(s) becomes
clogged with dust and lint.

EVAPORATOR BLOWER AND MOTOR

NOTE: All motors are prelubricated. Do not attempt to lubricate
these motors.
C99041
OUTDOOR TEMP
° F ° C
115 46
105 41
95 35
85 29
75 24
65 18
55 13
45 7
°
C99043
22
Fig. 20—Cooling Charging Chart, 50GS048 Units
(024) 60HZ CHARGING CHART
Fig. 22—Cooling Charging Chart, 50GX024 Units
For longer life, operating economy, and continuing efficiency,
clean accumulated dirt and grease from the blower wheel and
motor annually.
Disconnect and tag electrical power to the unit before
cleaning the blower motor and wheel. Failure to adhere to this
warning could cause personal injury or death.
To clean the blower motor and wheel:
1. Remove and disassemble blower assembly as follows:
a. Remove unit access panel.
b. Disconnect motor lead from time delay relay (TDR).
Disconnect yellow lead from terminal L2 of the contactor.
OUTDOOR TEMP
° F ° C
115 46
105 41
95 35
85 29
75 24
65 18
55 13
45 7
°
C99042
OUTDOOR TEMP
° F ° C
115 46
105 41
95 35
85 29
75 24
65 18
55 13
45 7
°
C99044