Carrier 60 Service Manual download pdf (Page 12)

1-4

T--295

1. Evaporator Coil With Integrated

Heating Coil (2)

2. Protection Plate

3. Expansion Valve

4. Evaporator Motor Fastening Clamps

(4-GR45, 6-GR60)

5. Evaporator Motor (4-GR45,

6-GR60)

6. Suction Line

7. Heating Lines

8. Service Valve

9. Evaporator Harness

Figure 1-4. Evaporator Section Components

(GR-60 Shown)

1.2.4 Compressor Assembly

The compressor assembly includes the refrigerant

compressor, clutch assembly, suction and discharge

service valves, high pressure switch, low pressure

switch, suction and discharge servicing (charging) ports

and electric solenoid unloaders.

The compressor raises the pressure and temperature of

the refrigerant and forces it into the condenser tubes.

The clutch assembly provides a means of belt driving

the compressor by the bus engine. The suction and

discharge service valves enable servicing of the

compressor. Suction and discharge servicing (charging)

ports mounted on the service valves enable connection

of charging hoses for servicing of the compressor, as

well as other parts of the refrigerant circuit. The high

pressure switch contacts open on a pressure rise to shut

down the system when abnormally high refrigerant

pressures occur. The electric unloaders provide a means

of controlling compressor capacity, which enables

control of temperature inside the bus. For more detailed

information on the compressor, refer to manual number

62-02756.

1.2.5 Fresh Air System

The F resh Air System (6, Figure 1-2) consists of a

damper and damperoperator. The damper operator may

becontrolled by the driver, if a switch isprovided. In the

automatic mode, it is controlled by the Micromax to

open and close t he damper to allow addition of fresh air

into the air entering the evaporator coil. For additional

information on air flow, refer to paragraph 1. 7.

1.2.6 System Operating Controls And Compo-

nents

The system is operated by a Carrier Transicold

Micromax microprocessor controller which consist of a

logic board (Figure 1-10), relay board (Figure 1-8 or

Figure 1-9), and manual operator switches. The manual

operating switches arelocatedon thedrivers controland

may consist of a single OEM supplied ON/OFF switch,

additional OEM supplied switches or a Carrier

Transicold supplied Micromate control panel

(Figure 1-11). The logic board regulates the operational

cycles of the system by energizing or de--energizing

relays on the relay board in response to deviations in

interior temperature. Modes of operation include

Cooling, Heat and Vent. On systems fitted with only an

ON/OFF switch and on systems with the Micromateset

in the AUTO mode, the logic board will cycle the

system between the operating modes as required to

maintain desired set point temperature.

In the vent mode the evaporator fans are operated to

circulate air in the bus interior.

In the heat mode the heatvalve is opened to allow a flow

of engine coolant through the heat section of t he

evaporator coil. The evaporator fans operateto circulate

air over the evaporator coil in the same manner as t he

vent mode.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 55 56

Comments to this Manuals

No comments

Carrier 60 Service Manual Page 12

Comments to this Manuals

Related products and manuals for Unknown Carrier 60