Carrier Supra 650 Service Manual download pdf (Page 19)

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Table 1-5.Test Point Identification

Test Point #

Circuit

TP1 RR NO Output

TP2 DER NC Output

TP3 F11 Output

TP4 DER NO Output

TP5 EHR NO Output

TP6 SSR NO Output

TP7 GPR NO Output

TP8 HR1 NO Output

TP9 SR NO Output

TP10 UFR NO Output

TP11 CCR NO Output

TP12 DDR NO Output

TP13 EFMR1 NO Output

TP14 EFMR2 NO Output

TP15 EFMR3 NO Output

TP16 RCR NO Output

TP17 DPS 12 Volt Input

1.2 GENERAL DESCRIPTION

The Supra models are self contained one-piece refrig-

eration/heating units designed for truck applications.

The units consist of a condenser section, located out-

side the truck body, and an evaporator section which

extends inside the body. Two types of drives may be

included:

Road Operation

Both the TDB and TDS model units are equipped with an

engine. In the Road Operation mode, the compressor

and alternator are driven by the engine. TDB units do not

have standby motors. A standby motor shell is installed

(without the motor winding) to allow the same belt ar-

rangement for both units.

Standby Operation

TDS units are equipped with an internal combustion

diesel engine and an electric standby motor. In Standby

Operation, the compressor and alternator are driven by

the electric standby motor.

1.3 CONDENSING SECTION

The condensing section (see Figure 1-1, Figure 1-2 &

Figure 1-3) contains the drive equipment, alternator and

the high side refrigeration system equipment. The en-

gine radiator and refrigerant condenser are incorpo-

rated into a single condenser/radiator assembly.

1.3.1 Drive Equipment

The drive equipment includes the engine, engine

mounted clutch, air cleaner, muffler, coolant overflow

bottle, drive belts and standby motor.

a. Engine

The engine (Figure 1-1, item 3) is a TriVortex diesel

manufactured by Kubota. Engine operation is controlled

by a Run Solenoid and a Speed Solenoid. The engine is

cooled by a radiator which is integral with the refrigerant

condenser. The cooling system is fitted with a coolant

overflow reservoir. Engine air cleaners are dry type.

b. Clutch Assembly

The clutch assembly is mounted on the engine crank-

shaft. All units have centrifugal type clutches.

c. Standby Motor

The standby motor operates on nominal

460v-3ph-60Hz or 230v-3ph-60Hz power. An overload

and short cycle protection is provided along with auto-

matic reset. Units are also equipped with a remote

mounted power receptacle.

d. Alternator/Regulator

CAUTION

Observe proper polarity when installing

battery, negative battery terminal must be

grounded. Reverse polarity will destroy the

rectifier diodes in alternator. As a precau-

tionary measure, disconnect positive bat-

tery terminal when charging battery in unit.

Connecting charger in reverse will destroy

the rectifier diodes in alternator.

The alternator supplies power for operation of the sys-

tem controls, evaporator fan motors and for charging of

the unit battery, if equipped.

The alternator converts mechanical and magnetic ener-

gy to alternating current (AC) and voltage, by the rota-

tion of an electromagnetic field (rotor) inside a three

phase stator assembly. The alternating current and volt-

age is changed to direct current and voltage, by passing

AC energy through a three phase, full-wave rectifier

system. Six silicon rectifier diodes are used.

The regulator is an all-electronic, transistorized device.

No mechanical contacts or relays are used to perform

the voltage regulation of the alternator system. The

electronic circuitry should never require adjustment and

the solid state active elements used have proved reli-

able enough to warrant a sealed unit.

The regulator is an electronic switching device. It

senses the voltage appearing at the auxiliary terminal of

the alternator and supplies the necessary field current

for maintaining the system voltage at the output termi-

nal. The output current is determined by the load.

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Comments to this Manuals

Hermes Hurtado 13 Mar 2025 | 11:43:58

Soy mecánico mantenedor. Necesito manuales técnicos

Carrier Supra 650 Service Manual Page 19

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