Carrier 50HJQ004 Installation, Start-Up And Service Instructions Manual page 58

service port on the suction line. Mount the temperature sensing
device on the suction line and insulate it so that outdoor ambient
temperature does not affect the reading. Indoor-air cfm must be
within the unit's normal operating range.
NOTE: Do not use mercury or dial type pocket thermometers as
they are not designed for
measurement.
TO USE COOLING CHARGING CHARTS
Take the outdoor ambient temperature and read the suction
pressure gauge. Refer to the charts to determine what the suction
temperature should be. If the suction temperature is high, add
refrigerant. If the suction temperature is low, carefully recover
some of the charge. Recheck the suction pressure as the charge is
adjusted.
Example: (Fig. 49)
Outdoor Temperature . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Temperature should be
(Suction Temperature may vary ± 5° F.)
STEP 10 —REPLACEMENT PARTS
A complete list of replacement parts may be obtained from any
Carrier distributor.
Fig. 49 --- Cooling Charging Chart- -- -50HJQ004
this type of temperature
85_F
74 psig
. . . . . . . . . . . . . . . . . . 52_F
C06048
Fig. 50 --- Cooling Charging Chart- -- -50HJQ005
Fig. 51 --- Cooling Charging Chart- -- -50HJQ006
58
C06049
C06050