Other Carrier Supplied Items; Refrigeration System Component Specifications; Electrical Specifications - Woundfield Motors; Electrical Specifications-Main Controller Input Sensors And Transducers - Carrier 68G5-105 Series Operation & Service Manual

Figure 1-10. Driver A/C

1.2.6 Other Carrier Supplied Items

Other Carrier supplied items include curbside and
roadside return air temperature sensors, two coolant
control valves and a check valve. The temperature
sensors provide input to the controller on temperature
conditions in the coach. The bypass heat (coolant
control) valve provides a path for coolant flow when all
evaporator heat valves are closed. The other coolant
control valve is the heat valve that controls the flow of
coolant to the driver heater coil. The check valve is
installed in the compressor refrigerant discharge line
and allows refrigerant flow in only one direction to
prevent liquid return to the compressor when the
compressor is shut down.
1.3 REFRIGERATION SYSTEM COMPONENT
SPECIFICATIONS
a. Refrigerant Charge
R-134a: 17.5 lb (8 kg)
b. Compressor
Model: 05G
No. of Cylinder: 6
Weight (Dry): 145 lb (66 kg) including clutch
Oil Charge:
New Compressor: 5.8 pints (2.7 liters)
Replacement Compressor: 5.5 pints (2.6 liters)
Oil Level:
Level in sight glass between bottom of glass and
middle of glass on compressor crankcase
(curbside)
Approved Compressor Oils - R-134a:
Castrol: Icematic SW68C
Mobil: EAL Arctic 68
ICI: Emkarate RL68H
c. Thermostatic Expansion Valve - for R-134a
Units:
1. Main Evaporator:
Superheat Setting (Nonadjustable): 12 to 18_F
(6.7 to 10.1_C)
MOP Setting: None
2. Driver Evaporator and Parcel Rack
Evaporator:
Superheat Setting (Nonadjustable): 5 to 12_F
(6.7 to 10.1_C)
MOP Setting: None
d. High Pressure Switch (HPS):
Opens at: 385 10 psig (26.2
Closes at: 285 10 psig (19.39
1.4 ELECTRICAL SPECIFICATIONS - WOUND
FIELD MOTORS
a. Main Evaporator/Heater Blower (Fan) Motor
Bearing Lubrication: Factory Lubricated (additional
grease not required)
Horsepower:
High Speed: 1.6 (1.2 kw)
Low Speed: 0.7 (0.5 kw)
Full Load Amps (FLA):
High Speed: 56
Low Speed: 28
Operating Speed:
High Speed: 1550 rpm
Low Speed: 1200 rpm
Voltage: 24 vdc
b. Driver Evaporator/Heater Blower (Fan) Motor
Bearing Lubrication: Factory Lubricated (additional
grease not required)
Full Load Amps (FLA): 9.5
Operating Speed:
High Speed: 3300 rpm
Medium Speed: 1600 rpm
Low Speed: 1100 rpm
Voltage: 24 vdc
c. Condenser Fan Motor
Bearing Lubrication: Shell Dolium R
Horsepower: 0.8 hp (1.072 kw)
Full Load Amps (FLA):
High Speed: 32
Low Speed: 21
Operating Speed:
High Speed: 1800 rpm
Low Speed: 1600 rpm
Voltage: 24 vdc
d. Parcel Rack Evaporator Fan Motor
Bearing Lubrication: Factory Lubricated (additional
grease not required)
Full Load Amps (FLA): 9.5
Operating Speed: 3300 rpm
Voltage: 24 vdc
1.5 ELECTRICAL SPECIFICATIONS-MAIN
CONTROLLER INPUT SENSORS AND
TRANSDUCERS
a. Suction and Discharge Pressure Transducer
Supply Voltage: 4.5 to 5.5 vdc (5 vdc nominal)
Input Range: --6.7 to 450 psig (- -0.05 to 30.62 BAR)
Output Voltage: vdc = 0.0098 x psig
+ 0.4659 (See Table 4-5 for calculations.)
b. Temperature Sensors
Input Range: --52.6 to 158_F (- -47 to 70_C)
Output: NTC 10K ohms at 77_F (25_C)
(See Table 4-3 for calculations.)
1-9
.68 BAR)
.68 BAR)
T-312