Carrier 69NT40-541-300, Operation And Service, Page: 27 / 152

T-318 2 − 7
2.2 REFRIGERATION SYSTEM DATA
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 Superheat
Verify at -18 ° C
(0 ° F) container box
temperature
4.5 to 6.7 ° C (8 to 12 ° F)
c. Heater Termination Thermostat
Opens 54 ° (+/-)C = 130 ° (+/-)F
Closes 38 ° (+/-4)C = 100 ° (+/-7)F
d. High Pressure Switch
Cutout 25 (+/-1.0)kg/cm = 350 (+/-10)psig
Cut-In 18 (+/-0.7)kg/cm = 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 (O
2
) 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
Water-Cooled
Condenser
4.9kg (10.75 lbs)
Receiver 4kg (8.75 lbs)
NOTE:
When replacing components (g.), (h.) and (i.), refer to installation instructions included with replacement part.
g. Fusible Plug*
Melting point 99 ° C = (210 ° F)
Torque* 6.2 to 6.9mkg (45 to 50ft-lbs)
h. Sight Glass/Moisture Indicator Torque 8.9 to 9.7mkg (65 to 70ft-lbs)
i. Rupture Disc
Bursts at 35 +/- 5%kg/cm = (500 +/- 5%psig)
Torque
(P/N 14-00215-03)
1.4 to 2mkg (10 to 15 ft-lbs)
j. Condenser Pressure
Transducer
Condenser Fan Starts
Condenser fan will start if condenser pressure is
greater than 14.06kg/cm (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/cm (130psig) AND the con-
denser fan remains ON for at least 30 seconds.
k. Unit Weight Refer to unit model number plate.
l. Water Pressure Switch
Cut-In 0.5 +/-0.2kg/cm (7 +/-3psig)
Cutout 1.6 +/-0.4kg/cm (22 +/-5psig)
m. Discharge Pressure
Regulating Valve
Factory Setting 32.7 +/-2.5kg/cm (72 +/-5.5psig)
* Rupture Disc, part number 14 -00215 -04 may be installed as an alternate for the receiver mounted fusible plug.