Xe ô tô hyundai excel toàn tập hyundai excel - P1

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CONDITIONING SYSTEM

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GENERAL 2

SERVICE ADJUSTMENT PROCEDURES 10

HEATER 30

VENTILATORS 37

COMPRESSOR 40

COOLING UNIT 58

CONDENSER 62

RECEIVER DRIER 63

CONDENSER FAN AND RELAY 64

A/CON RELAY AND RESISTOR 65

G E N E R A L

SPECIFICATIONS (DKK)

Heater assembly

Type

Performance Kcal/h (B.T.U./h)

Heater control assembly

Air-mix, warm water type 3,800 (15,000)

Control knob Air-conditioning

Cooling capacity Kcal/h (B.T.U./h)

Compressor

Model

No of cylinders and displacement cc/Rev.

Maximum allowable speed

High pressure switch

Low pressure switch

Fusible plug

OFF: 2,647 kPa (384 psi, 27 kg/cm 2 ), ON: 2,059 kPa (299 psi, 21 kg/cm 2 ) OFF: 206 kPa (30 psi, 2.1 kg/cm 2 ), ON: 196 kPa (28 psi, 2kg/cm 2 ) 103°C (217°F)

Refrigerant and quantity gr (oz., lb) R-12, 850-1,000 (30-35, 1.9-2.2)

3,300 (13,000)

DKS - 15BH

6 cylinders, 153 7,000 rpm

Electromagnetic, single-plate dry clutch

DC 12V, 45W

850-900 rpm Fin mounted thermostat OFF: - 1° - 1°C (30° - 34°F) ON: 3° - 5°C (38° - 41°F)

SERVICE STANDARD

Air-conditioning

Amount of deflection of V belt

Engine idling speed

Clutch clearance

8-10 mm (0.3-0.4 in.) 850-900 rpm

S P E C I F I C A T I O N S ( M A N D O )

Heater assembly

Type

Performance kcal/h (B.T.U./h)

Heater control assembly

Air-conditioning

Cooling capacity Kcal/h (B.T.U./h)

Compressor

Model

No of cylinders and displacement cc/Rev.

Maximum allowable speed

High pressure switch

Low pressure switch

Fusible plug

OFF: 2,647 kPa (384 psi, 27 kg/cm 2 ) ON: 2,059 kPa (299 psi, 21 kg/cm 2 ) OFF: 206 kPa (30 psi, 2.1 kg/cm 2 ), ON: 196 kPa (28 psi, 2 kg/cm 2 ) 103°C (217°F)

Refrigerant and quantity gr (oz., lb) R-12, 850-1,000 (30-35, 1.9-2.2)

Air-mix, warm water type 3,800 (15,000)

Control knob

3,300 (13,000) SD-709

7 cylinders, 155.

7,000 rpm Electromagnetic, signal-place dry clutch

DC 12V, 49W

850-900 rpm Fin mounted thermostat OFF: -1° - 1°C (30° - 34°F), ON: 3° - 5°C (38° - 41°F)

S E R V I C E S T A N D A R D S

Air-conditioning

Amount of deflection of V belt

Engine idling speed

Clutch clearance

8-10 mm (0.3-0.4 in.) 850-900 rpm

0.4-0.78 mm (0.016-0.031 in.)

LUBRICANTS

Heater assembly

Heater control lever Multipurpose grease

SAE J310a, NLGI grade #2

As required

Air-conditioner

SPECIAL TOOLS

A: DKS-15BH B: SD-709

97-4

(Number and name)

09977-21811

Bearing remover and

installer and pulley

No ventilation even when

the mode control lever

Remedy Repair or replace the water valve

Incorrect adjust installation of warm Adjust the warm water flow water flow control cable control cable

Incorrect adjustment of water Adjust the mode control cable valve link

Incorrect adjustment of change over dampers

Loose duct connection

Adjust the mode control cable

Connect the duct securely or replace the packing

Foreign material inside blower Incorrect balance of blower motor or fan

Damaged blower Ventilator duct connection malfunction

Incorrect adjustment of inside/

outside air changeover damper

Remove foreign material Replace the blower motor or fan Replace

Connect the duct securely or replace the packing

Adjust the inside/outside fresh air changeover cable

Probable cause Blown “BLOWER” fuse Malfunction blower motor Faulty resistor

Malfunction blower control switch Open or loose connection in electric circuit

Obstruction in the inlet of the blower unit

Clogged evaporator

Frosted evaporator Leaking air

Remedy Replace

Replace Replace Replace Repair open-circuited point

Remove obstruction

Clean evaporator with compressed air Check thermostat Check for leakage on both sides of cooling unit and air ducts

Malfunctioning dual pressure switch Malfunctioning thermostat

Malfunctioning A/C switch Malfunctioning blower switch Blown “A/C” fuse and/or “BLOWER”

fuse

Check operation Check operation Check operation Check operation Check operation Replace

Loose compressor drive belt Battery voltage too low Internal malfunction of compressor

Short circuit in the magnet coil Oil on clutch face

Gap between drive plate and pulley too large

Readjust Recharge battery Repair or replace compressor Replace Clean or replace clutch Adjust gap

Open or loose connection in electric Repair open-circuited

Remedy

Normal pressure are:

High pressure 1,470-1,760 kPa (213-256 psi, 15-18 kg/cm 2 ) Low pressure 190-290 kPa (28-42 psi, 1.9-2.9 kg/cm 2 ) When, ambient temperature 35°C (95°F) Engine speed 1,500 rpm Internal malfunction of compressor Repair or replace

compressor Faulty contact at sensing bulb of the

expansion valve Faulty insulation at sensing bulb of the expansion valve

Expansion valve opening is too large Insufficient refrigerant

Receiver-Drier clogged Expansion valve clogged Faulty thermostat Frosted piping

Repair Repair Repair Charge refrigerant Replace

Replace Check operation Clean or replace piping

97-8

High pressure is too high

High pressure is too low

Insufficient cooling of the condenser Check and clean condenser

Malfunctioning condenser fan motor Check operation

Internal malfunction of compressor Repair or replace compressor

SERVICE ADJUSTMENT PROCEDURES

CHECK AND ADJUSTMENT

After installation, check the following points and confirm that

everything is in order, and then charge the gas, adjust the idling,

and make the adjustment, performance test and the operation

test.

1 Check for any abnormal vehicle performance, etc which might

have been caused by installation of the equipment.

2 Check the magnetic clutch for operation (without turning the

Drive belt 7-9 mm (0.28-0.35 in.)

Air conditioner compressor belt 8-10 mm (0.32-0.40 in.)

97-10

ADJUSTMENT OF FAST IDLE CONTROL DEVICE

(F.I.C.D)

The vacuum system is designed to perform the F.I.C.D raises

the idling speed of the engine ensure better to cooling when the

car is stationary.

1 Warm up the engine.

2 Make sure engine is at correct idling speed with air conditioner

in the “OFF” position.

3 Set the engine speed to the specified rpm by adjusting screw

with air conditioner in the “ON” position

Specified rpm: 850-900 rpm

4 Depress and release accelerator pedal several times, and make

sure that engine speed returns to the specified rpm.

REFRIGERATION CYCLE

97-12

A I R C O N D I T I O N E R C O M P O N E N T S

DUAL PRESSURE SWITCH

Low pressure control

When refrigerant pressure exceeds (206 kPa (2.1 kg/cm 2 , 30

psi), refrigerant pressure overrides the force of spring A In this

case, the metal diaphragm remains intact and the movable

contact point itself moves in the direction of the arrow, thereby

closing the contact point (1), turning on, resulting in normal

operation.

When refrigerant pressure falls below 196 kPa (2.0 kg/cm 2 , 28

psi), the force of spring A opens the contact point (1), turning off,

and therefore turning the compressor off.

High pressure control

When refrigerant pressure exceeds 2,647 kPa (27 kg/cm 2 , 284

psi), refrigerant pressure overrides the metal diaphragm

resist-ance The metal diaphragm deforms and moves the pin in the

direction of the arrow, thereby opening the contact point (2),

turning off, and therefore turning the compressor off.

When pressure falls below 2,059 kPa (21 kg/cm 2 , 300 psi), the

metal diaphragm returns to the original state, closing the

con-tact point (2), turning on, resulting in normal operation.

SERVICE ADJUSTMENT PROCEDURES

SAFETY PRECAUTIONS

1 The R-12 liquid refrigerant is highly volatile A drop on the skin

of your hand could result in localized frostbite When handling

the refrigerant, be sure to wear gloves.

2 If the refrigerant splashes into your eyes, wash them with clean

water immediately It is standard practice to wear goggles or

glasses to protect your eyes, and gloves to protect your hands.

3 The R-12 container is a highly pressurized vessel Never leave it

in a hot place, and check to be sure that the storage temperature

is below 52°C (126°F).

4 A halide leak detector is often used to check the system for

refrigerant leakage Bear in mind that R-12, upon coming into

contact with flame (this detector burns like propane to produce

a small flame), produces phosgene, a toxic gas.

INSTALLATION OF MANIFOLD GAUGE SET

1 Close both hand valves of the manifold gauge fittings.

2 Install the charging hoses of the gauge set to the fittings.

Connect the low-pressure hose to the low-pressure service

port, and the high-pressure hose to the high-pressure service

port.

Tighten the hose nuts by hand.

NOTE

Fittings for attaching the manifold gauge set and located on

the compressor and the high pressure hose.

9 7 - 1 4

HANDLING REFRIGERANT SERVICE TAP VALVE

1 Before connecting the valve to the refrigerant container, turn

the handle fully counterclockwise.

2 Turn the disc counterclockwise until it reaches its highest

position.

3 Connect the center hose to the valve fitting Turn the disc fully

clockwise by hand.

4 Turn the handle clockwise to make a hole in the sealed top.

5 Turn the handle fully counterclockwise to fill the center hose

with air Do not open the high-and low-pressure hand valves.

6 Loosen the center hose nut connected to the center fitting of the

manifold gauge.

7 Allow air to escape for a few seconds, and then tighten the nut.

DISCHARGING THE REFRIGERATION SYSTEM

1 Connect the manifold gauge set to the system.

2 Place the free end of the center hose on a shop towel.

3 Slowly open the high-pressure hand valve to adjust the

refrig-erant flow Open the valve only slightly.

CAUTION

If refrigerant is allowed to escape too fast, compressor oil

will be drawn out of the system.

4 Check the shop towel to make sure no oil is being discharged.

If oil is present, partially close the hand valve.

5 After the manifold gauge reading drops below 434 kPa (3.5

kg/cm*, 50 psi), slowly open the low-pressure hand valve.

6 As the system pressure drops, gradually open both the high-and

the low-pressure hand valves until both gauges read 0 kPa (0

kg/cm 2 , 0 psi).

EVACUATING REFRIGERANT SYSTEM

NOTE

It is necessary to evacuate the air conditioning system any

time the system has been serviced to the extent that it has

been discharged Evacuation is necessary to rid the system

of all air and moisture that may have been allowed to enter

the unit.

After installation of a component, the system should be

evacuated for approximately 15 minutes A component in

service that has been opened for repair should be evacuated

for 30 minutes.

1 Engine should be off.

2 Connect manifold gauge set to compressor gauge fittings.

Close both high and low pressure valves.

3 Make sure refrigerant has been discharged from system.

4 Connect the center hose of the gauge set to the vacuum pump

inlet.

5 Start the vacuum pump and then open the high and low

mani-fold pressure valves.

6 After about ten minutes, check that the low pressure gauge

reads more than 94.39 kPa (0.96 kg/cm*, 13.7 psi) vacuum If

the pressure rises or the specified negative pressure can not

be obtained, there is a leak in the system In this case, repair

the leak as described in the following.

(a) Close both the manifold valves and stop the vacuum pump.

(b) Charge system with a can of refrigerant [about 0.4 kg (0.9

Ibs.)] Refer to Charging Refrigerant.

(c) Check for refrigerant leakage with a leak detector.

Repair any leakage found Refer to Checking Refrigerant

leak.

(d) Discharge refrigerant again, and then evacuate system.

If not leaks found, continue evacuating the system.

7 One again, operate the vacuum pump.

8 Open both manifold pressure valves to obtain 94.39 kPa (0.96

kg/cm*, 13.7 psi) of vacuum.

9 After low pressure manifold gauge indicates as close to 94.39

kPa (0.96 kg/cm*, 13.7 psi) as possible, continue evacuating

for 15 minutes.

10 After evacuating for 15 minutes, close both manifold pressure

valves and stop the vacuum pump Disconnect the hose from

the vacuum pump The system is new ready for charging.

97-16

CHARGING REFRIGERANT SYSTEM (Vapor)

NOTE

This step is to charge the system through the low pressure

side with refrigerant in a vapor state When the refrigerant

container is placed rightside up, refrigerant will enter the

system as a vapor.

1 Install the refrigerant can tap valve as described in Handling the

Refrigerant Service Tap Valve section.

2 Open the low pressure valve Adjust the valve so that the low

pressure gauge does not read over 412 kPa (4.2 kg/cm*, 60 psi).

3 Put the refrigerant container in a pan of warm water (maximum

temperature 40°C or (104°F) to keep vapor pressure in the

container slightly higher than vapor pressure in the system.

4 Run the engine at fast idle, and operate the air conditioner.

CAUTION

Be sure to keep the container upright to prevent liquid

refrig-erant being charged into the system through the suction side,

resulting in possible damage to the compressor.

5 Charge the system with more than one container (400g, 0.9 lb)

to the specified amount Then, close the low pressure valve.

Specified amount: 0.85-1.0 kg (1.9-2.2 lb)

NOTE

A fully charged system is indicated by the receiver sight glass

being free of any bubbles.

When refrigerant charging speed is slow, immerse

refriger-ant can in water, heated to a temperature of about 40°C

(104°F).

WARNING

o Under any circumstances the refrigerant can must not be

warmed in water heated to a temperature of over 52°C

(125°F).

o A blow torch or stove must never be used to warm up the

can.

CHARGING REFRlGERANT SYSTEM (LIQUID)

NOTE

This step is to charge an empty system through the high

pressure side with refrigerant in a liquid state When the

refrigerant container is held upside down, refrigerant will

enter the system as a liquid.

CAUTION

Never run the engine when charging the system through the

high pressure side.

Do not open the low pressure valve when the system is being

charged with liquid refrigerant.

1 Close both high and low pressure valves completely after the

system is evacuated.

2 Install the refrigerant can tap valve as described in Handling the

Refrigerant Service Tap Valve secton.

3 Open the high pressure valve fully, and keep the container

upside down.

4 Charge the system with more than one container (400 g, 0.9

lb) to the specified amount by weighing charged refrigerant

with a scale Overcharging will cause discharge pressure (high

side) to rise then, close the high pressure valve.

Specified amount: 0.85-1.0 kg (1.9-2.2 lb)

NOTE

A fully charged system is indicated by the receiver sight glass

being free of any bubbles.

If the low pressure gauge does not show a reading, the

sys-tem is clogged and must be repaired.

5 After the specified amount of refrigerant has been charged into

system, close manifold gauge valve.

6 Confirm that there are no leaks in system by checking with a

leak detector Refer to Checking Refrigerant Leak.

NOTE

Conducting a performance test prior to removing manifold

gauge is a good service operation Refer to Performance

Test.

COMPRESSOR OIL LEVEL CHECK

The oil used to lubricate the compressor circulates into system

from the oil pump while compressor is operating.

Whenever replacing any component of the system or when a

large amount of gas leakage occurs, add oil to maintain the

original total amount of oil.

Total amount of oil in the system:

150cc (5.1 fl oz, 5.3 Imp fl oz)

LOW HIGH

9 7 - 1 8

Oil return operation

Before checking and adjusting oil level, operate compressor at

engine idling speed, with controls set for maximum cooling and

high blower speed, for 20 to 30 minutes in order to return oil to

compressor.

Checking and adjusting for used compressor

1 After oil return operation; stop the engine and discharge

refrig-erant and then remove compressor from the vehicle.

2 Drain compressor oil from the oil drain plug and measure the

amount.

Oil is sometimes hard to extract when compressor is cooled.

Remove oil while compressor is warm [maintained to

40-50°C (104-122°F).

3 If the amount is less than 90 cc (3.0 US fl oz, 3.2 Imp fl oz), some

refrigerant may have leaked out Conduct leak tests for

connec-tions of each system, and if necessary, repair or replace faulty

parts.

4 Check the purity of the oil and then adjust oil level following the

procedure below.

Pour in same amount of oil as was drained out

Pour in 90 cc (3.0, 3.2) of oil

(b) Oil contains chips or other foreign material After air

condi-tioner system has been flushed with refrigerant, replace

receiver dryer Then pour 150 cc (DKK), 120-150 cc

(SD-709).

Charging oil of replacement component parts

When replacing the system’s component parts, be sure to

supply the following amount of oil to the component parts to be

REFRIGERANT LEVEL CHECK

1 Start the engine and hold engine speed at 1,500 rpm.

2 Set A/C switch to “ON” position.

3 Set temperature lever to maximum cold position.

4 Set blower to maximum speed.

5 Check sight glass after the lapse of about five minutes Judge

according to the following table.

High pressure side is High pressure side is High pressure side is warm and low pressure hot and low pressure abnormally hot side is fairly cold side is cold

State in sight glass Bubbles flow

continu-ously Bubbles will disappear and some- thing like mist will flow when refrigerant

is nearly gone

The bubbles are seen

at intervals of 1-2 seconds

Almost transparent No bubbles can be Bubbles may appear seen

when engine speed is raised and lowered

No clear difference exists between these two conditions

Both pressure on high and low pressure sides are slightly low Check for gas leakage, repair as required, re- plenish and charge system

Both pressure on high and low pressure sides are normal

Both pressure on high and low pressure sides are abnormally high Discharge refrigerant from service valve of low pressure side

(a) The bubbles seen through the sight glass are influenced by

the ambient temperature Since the bubbles are hard to

show up in comparatively low temperatures below 20°C

(68°F), it is possible that a slightly larger amount of frigerant

would be filled, if supplied according to the sight glass Be

sure to recheck the amount when exceeds 20°C (68°F) In

higher temperature the bubbles are easy to show up.

(b) When the screen in the receiver drier is clogged, the bubbles

will appear even if the amount of refrigerant is normal In

this case, the outlet side pipe of the receiver drier becomes

considerably cold.

HOSE AND PIPE CHECK

Check heater and air conditioner for damaged hoses or pipes

due to interference or friction with adjoining parts If damage is

minor, repair those affected hoses or pipes If damage is major

and if there is the possibility of encountering holes, replace the

affected parts.

Carefully check hoses and pipes, especially those located

close to moving parts or sharp edge of panel.

CHECKING REFRIGERANT LEAKS

Conduct a leak test with electric leak detector whenever

leak-age of refrigerant is suspected and when conducting service

operations which are accompanied by disassembly or loosening

of connection fittings.

Electric leak detector

The leak detector is a delicate device that detects small amounts

of halogen In order to use the device properly, read the

manuals put out by each maker and perform the specified

maintenance and inspections.

If a gas leak is detected, proceed as follows:

1 Check torque on the connection fitting and, if too loose, tighten

to the proper torque Check for gas leakage with a leak detector.

2 If leakage continues even after fitting has been retightened,

discharge refrigerant from system, disconnect the fittings, and

check its seating face for damage Always replace even if

dam-age is slight.

3 Check compressor oil and add oil if required.

4 Charge refrigerant and recheck for gas leaks If no leaks are

found, evacuate and charge system.

O F F - S E A S O N M A I N T E N A N C E

Even in the off-season, turn the compressor for 10 minutes at

least once a month by running the engine at idling rpm.

PROPANE LEAK DETECTOR

ELECTRIC LEAK DETECTOR

97-22

PERFORMANCE TEST

1 Install the manifold gauge set.

2 Run the engine at 2,000 rpm and set the controls for maximum

cooling and high blower speed.

3 Keep all window and doors open.

4 Place a dry-bulb thermometer in the cool air outlet.

5 Place a psychrometer close to the inlet of the cooling unit.

6 Check that the reading on the high pressure gauge is

1,373-1,575 kPa (14-16 kg/cm 2 , 199-228 psi).

If the reading is too high, pour water on the condenser.

If the reading to too low, cover the front of the condenser.

7 Check that the reading on the dry-bulb thermometer at the air

inlet at 25-35°C (77-95°F).

8 Calculate the relative humidity from the psychrometric graph

by comparing the wet-and dry-bulb reading of the

psychrome-ter at the air inlet.

9 Measure the dry-bulb temperature at the cool air outlet, and

calculate the difference between the inlet dry-bulb and outlet

dry-bulb temperatures.

10 Check that the intersection of the relative humidity and

temperature difference is between the two hatched lines If

the intersection is within the two lines, cooling performance is

satisfactory.

PERFORMANCE TEST DIAGNOSIS

The test gauge indicators shown on the following chapter are to be

used as typical examples of common problems which you may

Low side

NORMAL

High side NORMAL

and “OFF” cycle.

o Sight glass: Tiny bubbles.

o Discharge air:

Becomes warm as low side cycles into vacuum.

o Discharge air:

Becomes warm all the time during hot part of day.

o Compressor: Cycles

on and off too fast.

o Low side gauge:

Not enough range shown on low side gauge.

DIAGNOSIS Some air and mois- ture in system.

Excessive moisture in system

Defective thermostatic switch

CORRECTION

1 Leak test system.

2 Discharge refrigerant from system.

3 Repair leaks as located.

4 Replace receiver-drier The drier is probably saturated with moisture.

5 Evacuate the system for

5 Operate system and check performance.

1 Stop engine and turn air conditioner “OFF”

2 Replace thermostatic switch when installing new thermostatic switch, make sure that capillary tube is installed in the same position and to the same depth in eva- porator core as old switch tube.

3 Operate system and check performance.

9 7 - 2 4

GAUGE READINGS

Low side

LOW

High side LOW

Low side

LOW

High side LOW

OTHER SYMPTOMS

o Compressor: low side pressure builds too high before compressor turn on (cycle “ON” point too high)

o Discharge air:

Slightly cool.

o Sight glass:

Some bubbles.

o Discharge air: Warm

o Sight glass: Clear

o Discharge air:

Slightly cool.

o Expansion valve:

Sweating or frost build up.

DIAGNOSIS Faulty thermostatic switch

o System slightly low on R-12

o System very low

on R-12

o Possible leak in system.

o Expansion valve stuck closed.

o Screen plugged.

o Sensing bulb mal- function.

so that no short circuiting can occured.

3 Operate system and check performance.

1 Check leaks.

2 Discharge refrigerant.

3 Repair leaks.

4 Check compressor oil level.

5 Evacuate system using a vacuum pump.

6 Charge system with R-12

7 Operate system and check performance.

1 Check leaks.

2 Leak test compressor seal area very carefully.

3 Discharge refrigerant.

4 Check compressor oil level.

5 Evaporate system using a vacuum pump.

6 Charge system with R-12.

7 Operate system and check performance.

1 Discharge system.

2 Disconnect inlet line

at expansion valve and remove and inspect screen.

3 Clean and replace screen and reconnect inlet line.

4 Evacuate system using a vacuum pump.

5 Charge system with R-12.

GAUGE READINGS OTHER SYMPTOMS

Low side

LOW

High side LOW

Low side

HIGH

High side LOW

Low side

HIGH

High side HIGH

Low side

HIGH

High side HIGH

9 7 - 2 6

o Discharge air:

slightly cool.

o High side pipe:

Cool and also shows sweating or frost.

0 ssor malfunc- tion

Compre-o tioning condenser overch- arge.

Malfunc-0 Large amount

of air and moisture

CORRECTION

1 Discharge system.

2 Remove and replace receiver-drier, liquid pipes or other defective components.

3 Evacuate system using a vacuum pump.

4 Charge system with R-12

5 Operate system and check performance.

1 Isolate compressor.

2 Remove compressor der head and inspect compressor.

cylin-3 Check compressor oil level.

mount-4 Check for refrigerant overcharge.

5 Operate system and check performance.

1 Discharge refrigerant from system.

2 Replace receiver-drier which may be saturated with moisture.

3 Evacuate system using vacuum pump.

4 Charge system with R-12.

5 Operate system and check performance.

o Expansion valve sutck open

CORRECTION

1 Discharge system.

2 Replace expansion valve, making sure all contacts are clean and secure.

3 Evacuate system using vacuum pump, then rech- arge system with R-12.

4 Operate system and check performance.

AIR CONDITIONING INSTALLATION

PRECAU-T I O N S

1 Refrigerant Lines

(a) Always use two wrenches when disconnection or

connect-ing lines.

(b) Protective plugs are used to prevent contamination and

moisture from entering disconnected air conditioning

com-ponents and lines Always install plugs on fittings that are

exposed to the atmosphere.

(c) Clean contaminated o-rings during installation Never use

compressed air.

(d) Use only new o-rings during installation.

The o-ring should be lubricated with compressor oil to the

area shown.

(e) Install the o-ring against the shoulder to ensure proper

seating as shown.

(f) Insert tube into union First tighten nut by hand as much as

possible Then, tighten nut to specified torque.

2 Compressor

Compressor oil and during agent (n 2 ) are sealed in the

compres-sor and attention must be paid to the following.

(a) During handling and installation, the compressor must be

kept perfectly level.

If you suspect that the compressor has not been kept level,

manually rotate the compressor shaft 5 to 6 times before

installing to return any oil at the head of the compressor to

the oil reservoir If the compressor is started suddenly with

the oil in the compressor head, the valve may be damaged.

(b) Do not remove plugs from fittings just prior to connecting

lines.

3 Condenser

(a) The condenser is made completely of aluminium, so be

careful not to damage the tube or fins.

(b) When connecting pipe, tighten initially by hand, then be

sure to use two wrenches to tighten.

If tightened with only one wrench, the outlet/inlet port will

be strained, causing gas leakage or damage to the line or

condenser.

4 Receiver-drier

The receiver drier contains dry agent (N 2 ) desiccant, etc

Atten-tion must be paid to the following points.

(a) Do not remove plugs until just before connecting.

The connection of the outlet and inlet port of the

receiver-drier is the final step of the pipe installation procedure.

(b) Do not mistake the inlet (Marked IN) and the outlet

connec-tions.

HEATER KIT

9 7 - 3 0

O P E R A T I O N

The door (D1) is used to select either fresh air from (a) On setting the lever to “VENT” position, air flows

Setting the RECIRC/FRESH control lever to “FRESH” (b) On setting the lever to “BI-LEVEL” position, air position, will allow outside air to enter Setting the flows to the ventilator outlets, to the floor outlets RECIRC/FRESH control lever to “RECIRC”, will allow and to the defroster outlets.

inside air to recirculate (c) On moving the lever to “HEAT” position, air flows

2 The door (D2) is always opened and admitting

recir-culated air regardless of the position of D1 door.

3 Outlet air flow is controlled by the doors (D4, D5 and

D6).

The mode control lever opens and shuts the doors

(D4, D5 and D6) and establishes the air passage

according to the lever position.

to the floor outlets and to the defroster outlets (d) On moving the lever to “DEF” position, air flows to the defroster outlets.

4 The cooling or heating temperature is controlled by the door (D3) The door (D3) is connected to the tempera- ture control lever by a cable.

(The water valve is also connected to the temperature control lever by a cable.)