Carrier 69NT40-541-505, Operation And Service Manual, Page: 26 / 143

T-368 3–6
3.2 REFRIGERATION SYSTEM DATA
* Rupture Disc, part number 14 -00215 -04 may be installed as an alternate for the receiver mounted fusible plug.
a. Compressor/Motor
Assembly
Number of Cylinders 6
Model 06DR
CFM 41
Weight (Dry) 118kg (260 lb)
Approved Oil Castrol Icematic
Oil Charge degrees 3.6 liters (7.6 U.S. pints)
Oil Sight Glass The oil level range, with the compressor off, should
be between the bottom and one-eighth level of the
sight glass.
b. Expansion Valve Super-
heat Verify at -18C (0°F) container
box temperature 4.4 to 6.7°C (8 to 12°F)
c. Heater Termination
Thermostat
Opens 54° (+/ − 3) C = 130° (+/ − 5) F
Closes 38° (+/ − 4) C = 100° (+/ − 7) F
d. High Pressure Switch
Cutout 25 (+/ − 1.0) kg/cm2 = 350 (+/ − 10) psig
Cut-In 18 (+/ − 0.7) kg/cm2 = 250 (+/ − 10) psig
WARNING
!
EXPLOSION HAZARD: Failure to follow this WARNING can result in death, serious personal
injury and / or property damage.
Never use air or gas mixtures containing oxygen (O2) for leak testing or operating the product.
Charge Only With R − 134a: Refrigerant must conform to AHRI Standard 700 specification.
e. Refrigerant R − 134a Conforming to AHRI standard 700 specifications.
f. Refrigerant Charge
Unit Configuration Charge Requirements − R-134a
Receiver 3.3 kg (7.3 lbs)
NOTE
When replacing components (g.) and (h.), refer to installation instructions included with replacement
part.
g. Fusible Plug, Receiver*
Melting point 99°C = (210°F)
Torque* 6.2 to 6.9mkg (45 to 50ft-lbs)
h. Sight Glass/Moisture In-
dicator Torque 8.9 to 9.7mkg (65 to 70ft-lbs)
i. Condenser Pressure
Transducer
Condenser Fan Starts Condenser fan will start if condenser pressure is
greater than 14.06kg/cm2 (200psig) OR the con-
denser fan is OFF for more than 60 seconds.
Condenser Fan Stops Condenser fan will stop if condenser pressure is less
than 9.14kg/cm2 (130psig) AND the condenser fan
remains ON for at least 30 seconds.
j. Unit Weight Refer to unit model number plate.
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