SsangYong Rexton. Manual - part 628

SSANGYONG Y200

7B-14 GENERAL HVAC SYSTEM

Important: R e f e r t o t h e m a n u f a c t u r e r ’ s
instructions for the charging station in use. It is
necessary to evacuate the system before
recharging it with new or recycled refrigerant.

3. Start the vacuum pump and begin the evacuation

process. Non-condensable gases (mostly air) are
vented from the tank automatically during the
recycling process. The pressure being released
may be heard.

4. Check for leaks in the system. Refer to the

manufacturer’s instructions for the charging
station in use.

I m p o r t a n t : Change the vacuum pump oil
f r e q u e n t l y . R e f e r t o t h e m a n u f a c t u r e r ’ s
instructions for the charging station in use.

Check for Refrigerant Leaks

1. Connect the center hose of the gauge to the

refrigerant tank.

2. Open the high pressure valve of the gauge to

charge with refrigerant gas.

3. Charge until the low pressure gauge reads 1.0 kg/cm

and close the valve.

4. Using a gas leak detector, check the system for

leaks.

5. If any leak is found, replace O-ring or repair the

faulty connection.

How to Use the Tap Valve

1. Rotate the handle counterclockwise fully before

connecting the valve to the refrigerant tank.

2. Rotate the disk counterclockwise fully.

3. Connect the center hose to the valve fitting and

then rotate the disk clockwise fully by hand.

4. Rotate the handle clockwise to drill the sealed

hole.

5. Remove the hose nut securing the center fitting

of the manifold gauge and then tighten the nut
again in a few seconds.

YAD7B180

YAD7B190

YAD7B200

GENERAL HVAC SYSTEM 7B-15

SSANGYONG Y200

Charging Refrigerant

Charging for Gas

1. Connect the tap valve to the refrigerant tank.

2. Open the low pressure and adjust the low-side

reading below 4.2 kg/cm

3. Place the refrigerant tank in the warm water

(40 ° C) and keep the gas pressure in the refrigerant
tank higher than the gas pressure in the charging
valve.

4. Run the engine at high speed and operate A/C

system.

Notice: Place the refrigerant tank on the flat floor
to protect the liquid refrigerant from coming
t h r o u g h t h e s u c t i o n i n l e t r e s u l t i n g i n t h e
compressor’s damage.

5. Charge the specified amount to the charging valve

and close the low pressure valve.

Notice:

•

If the charging speed is low, it’s more efficient
to place the refrigerant tank in the warm water
(40 ° C). But the temperature should keep below
(52 ° C) at any situation.

•

Be careful not to contact the heating device or
material.

Charging for Liquid

Notice:

•

Do not operate when charging the system through
the high-side rpessure.

•

Do not open the low pressure valve when charging
the system by the liquid refrigerant.

1. Tighten both high pressure and low pressure

completely before evacuating the charging valve.

2. Connect the tap valve of the refrigerant tank.

3. Open the high pressure valve and turn the

refrigerant tank upside down.

Single: 850 ± 50 g

Dual: 1200 ± 50 g

Specified amount

YAD7B210

YAD7B220

YAD7B230

SSANGYONG Y200

7B-16 GENERAL HVAC SYSTEM

;;;;;

Operation Check

Notice: Operation Check is recommended before
removing the manifold gauge.

1. Install the manifold gauge set.

2. Run the engine at 2,000 rpm and set the blower

switch at ‘HI’ and A/C switch ‘ON’. Set the
temperature control lever at ‘COOL’.

3. Keep opening all of the window and door.

4. Place a dry bulb thermometer to the front duct.

5. Place a psychrometer close to the inlet of the

cooling unit.

6. Check the high pressure gauge reading within

14 - 16 kg/cm

If the reading indicates high excessively, spray
the water to the condenser.

If the reading indicates low excessively, cover the
condenser with the towel.

7. Check the temperature of air inlet within 25 - 35

8. C a l c u l a t e t h e r e l a t i v e h u m i d i t y f r o m t h e

psychrometic graph comparing the wet/dry
temperature at the air inlet.

9. Measure the wet/dry temperature at the cold air

outlet and calculate the temperature difference of
the dry bulb between the inlet and the outlet.

10. Check the cross point of the relative humidity and

check the temperature difference between the
black line. If the cross point is located between
the black line, the cooling performance is normal.

4. The discharging pressure increases when the

charging valve charges excessively, so charge
the charging valve to the specified amount with
measuring the weight of the refrigerant before
closing the high pressure valve.

5. Charge the specified amount of the refrigerant and

then close the valve of the manifold gauge. Check
the system for any leak.

YAD7B240

GENERAL HVAC SYSTEM 7B-17

SSANGYONG Y200

Total Oil Capacity

265 cc

COMPRESSOR OIL
REPLACEMENT

Before Oil Replacement

When any part is replaced or there are a lot of gas
leaks in the A/C system, you should add the specified
amount of the oil to keep the approval oil capacity
because the oil for lubricating the compressor
circulates through the A/C system during operating
the compressor.

Handling Oil

•

Be careful that moistures, dusts etc. must not flow
into the oil.

•

Do not mix with any other material.

•

If the oil leaves outside for long time, it’s possible
to mix it with the moistures and so keep the oil
sealed with a container.

Circulating Oil

For checking or adjusting the oil level, set the control
unit to full cold and max blower speed with keeping
the engine run at idle for 20 - 30 minutes in order to
circulate the oil through the compressor.

Replacement Oil

1. Perform the oil circulation and stop the engine.

Remove the compressor on the vehicle.

2. Drain the oil at the position of the system line

connection.

Notice: It may be difficult to discharge the oil when
the compressor is cold. At this time warm the
compressor (40 - 50

C) before discharging the

oil.

YAD7B250

Content .. 626 627 628 629 ..