Carrier 30HR Specifications download pdf (Page 10)

MOTOR WINDING THERMAL PROTECTOR OR

HIGH-PRESSURE SWITCH – Turn START-STOP

Switch to "Stop", then to "Start". Entire unit stops; restart is

under timer control.

LOW-PRESSURE SWITCH-Automatic restart when

pressure rises to cut-in point.

OIL PRESSURE SAFETY SWITCH-Manually depresses

reset button devices and turn START-STOP switch to "Stop"

and then to "Start".

If any safety device action repeats. Do not make a second

attempt to restart unit until the cause is determined and

corrected.

Timer Controlled Restart- when power is restored after an

interruption; restart is automatic thru normal timer-controlled

cycle. When control circuit is reenergized, approximately 5

minutes will elapse before first compressor is energized.

When START-STOP switch is turned to "Stop" or when

low water temperature cutout opens during unit operation,

timer will start, run for approximately 5 minutes and stop.

Timer is now set for first compressor to start immediately

when operation is resumed.

Servicing 30HR Units-If it is necessary to open both main

power circuit breakers, first turn the control circuit START-

STOP switch to "Stop".

This de-energizes (and closes) the liquid line valves and

energizes the crankcase heaters while the compressors are off.

If only one main power circuit breaker will be open, first turn

the control circuit START-STOP switch to "Stop" and then

disconnect the control relay holding Coil in the control circuit

for the compressor that will be off This will de-energize the

liquid line valve for that circuit and energize the crankcase

heater for the off compressor. Then turn the control circuit

START-STOP switch to "Start” to restart the operable

compressor.

On 30HS units, the oil pressure safety switch(es) for the

off compressor(s) will open, causing the liquid line valve(s) to

close. The control circuit will remain energized and the

crankcase heater(s) for the off compressor(s) will energize. At

restart, depress the reset button on the oil safety switch, and

turn the START-STOP switch to "stop” then to "Start

TROUBLESHOOTING

SYMPTOMS PROBABLE CAUSE REMEDY

Power line open Reset circuit breaker

Check control circuit

for ground or short

Control circuit breaker

tripped

Reset breaker

Safety thermostat

tripped

Reset thermostat

Tripped power breaker Check the controls.

Find cause of trip and

reset breaker

Power off-restart

Pump binding-free

pump

Incorrect wiring

rewire

Condenser circulating

pump not running

Pump motor burned

Out-replace

Loose terminal

connection

Check connections

Improperly wired

controls

Check wiring and

rewire

Low line voltage Check line voltage-

determine location of

voltage drop and

remedy deficiency

Compressor motor

defective

Check motor winding

for open or short rep-

lace compressor, if

necessary

Compressor

does not run

Seized compressor Replace compressor

Raise differential

setting

Check capillary for

pinches

Low-pressure control

erratic in action

Replace control

Compressor suction

Valve leaking

Replace valve plate

Compressor suction

Shut off valve partially

closed

Open valve

Compressor

cycles on low

pressure control

Low refrigerant charge Add refrigerant

SYMPTOMS PROBABLE CAUSE REMEDY

Compressor

Cycles on low-

Pressure control

Plugged compressor

Suction strainer

Clean strainer or

Replace

Check capillary tube

for pinches

High-pressure control

Erratic in action

Set control as

required

Compressor discharge

valve partially closed

Open valve, or

replace

if defective

Air in system Purge

Condenser scaled Clean condenser

Compressor

Cycles on high

Pressure control

Condenser water pump or

fans not operating

Start pump repair or

replace if defective

Low refrigerant charge Add refrigerant

Control contacts fused Replace control

Air in system Purge

Partially plugged or

plugged expansion valve

or strainer

Clean or replace

Defective insulation Replace or repair

Service load too high Keep doors and

windows closed

Unit operates long

or continuously

Inefficient compressor Check valves,

replace

If necessary

Support piping as

required

Piping vibration

Check for loose pipe

connectors

Add refrigerant Expansion valve hissing

Check for plugged

liquid line strainer

Check valve plates

for valve noise

Replace compressor

(worn bearings)

System noises

Compressor noisy

Check for loose

compressor hold

down bolts

1 2 ... 5 6 7 8 9 10 11 12

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Pioneer DEH-1600RB RU Manual de usuario (18 paginas)

Marca: Pioneer | Categoria: Car radio | Tamaño: 0.51 MB |

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Инструкция по эксплуатации

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Схема проводных соединений

Передняя панель

Радиоприемник



Использование функций RDS

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Дополнительная информация

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Carrier 30HR Specifications Page 10

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Carrier 30HR Specifications Page 10

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Pioneer DEH-1600RB RU manuales

Pioneer DEH-1600RB RU Manual de usuario (18 paginas)

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