1-1
62-10630
SECTION 1
DESCRIPTION
1.1 INTRODUCTION
WARNING
Beware of unannounced starting of the
unit. The unit may cycle the fans and operat-
ing compressor unexpectedly as control re-
quirements dictate.
This manual contains Operating Data, Electrical Data
and Service Instructions for the Carrier Transicold
Model 40S and 50S truck refrigeration units listed in
Table 1-1.
The unit (Figure 1-1) is of the split system type with the
condenser mounted outside the truck body, evaporator
mounted in the body, and a CAB COMMAND control
center mounted in the drivers compartment. Two types
of compressor drive are available:
D
D
D
D
Road operation
the compressor is driven by the engine of the vehicle
when in operation over-the-road.
D
D
D
D
Road/Standby version
With the standby option a second compressor is
mounted in the condenser section. This compressor
is driven by 230 volt, single or three phase power.
The model/serial nameplate is located inside of the unit
on the frame as shown in Figure 1-1.
The condenser section (see Figure 1-2 & Figure 1-3)
contains the condenser fan & coil, filter--drier, oil
separator, condenser pressure control valve, hot gas
valve and microprocessor. On road/standby units the
condenser also houses the standby compressor,
control box and rectifier/transformer assembly. In
addition, single phase units are fitted with a start box
which contains the capacitors and relay.
The evaporator assembly consists of the evaporator
fans (3 each = 50S, see Figure 1-5; 2 each = 40S, see
Figure 1-6), evaporator coil, expansion valve, defrost
termination
thermostat,
compressor
pressure
regulating valve, heat exchanger, low pressure switch
and quench valve.
The control system is a microprocessor controller. Once
the controller is set at the desired temperature, the
system automatically selects cooling and heating cycles
as necessary to maintain the desired temperature with
in very close limits.
Table 1-1 Model Chart
R-404A
Road
Condenser Weight
Model
LB
KG
Road
Compressor
Standby Compressor
Road
Road and
Standby
Evaporator Weight
40S
6
2.7
TM 16
06VM306 (3 & 1 phase)
192 lb
320 lb
64 lb (29kg)
50S
6.5
2.9
TM 16
06VM307 (3 phase)
06VM306 (1 phase)
192 lb
(87 kg)
320 lb
(145 kg)
86 lb (39 kg)
NAMEPLATE
CAB COMMAND
EMERGENCY
SWITCH
Figure 1-1 Integra 50S
