Content .. 655 656 657 658 ..

Hyundai Santa Fe (2006 year). Manual - part 657

HA -6

HEATING, VENTILATION AND AIR CONDITIONING

AIR CONDITIONING

SYSTEM

INSTRUCTIONS

E3BA7FFA

WHEN HANDLING REFRIGERANT

R-134a 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.

It is standard practice to wear goggles or glasses to
protect your eyes, and gloves to protect your hands.
If the refrigerant splashes into your eyes, wash them
with clean water immediately.

The R-134a container is highly pressurized. Never
leave it in a hot place, and check that the storage
temperature is below 52℃ (126℉)

An electronic leak detector should be used to check
the system for refrigerant leakage. Bear in mind that
the R-134a, upon coming into contact with flame, pro-
duces phosgene, a highly toxic gas.

Use only recommended the lubricant for R-134a sys-
tems. If lubricants other than the recommended one
used, system failure may occur.

PAG lubricant absorbs moisture from the atmosphere
at a rapid rate, therefore the following precautions
must be observed:
-

When removing refrigerant components from a
vehicle, cap immediately the components to pre-
vent from the entry of moisture.

When installing refrigerant components to a ve-
hicle, do not remove the cap until just before con-
necting the components.

Complete the connection of all refrigerant tubes
and hoses without delay to prevent the A/C sys-
tem from taking on moisture.

Use the recommended lubricant from a sealed
container only.

If an accidental discharge in the system occurs, ven-
tilate the work area before resuming service.

LQAC003A

WHEN REPLACING PARTS ON A/C SYSTEM

Never open or loosen a connection before discharging
the system.

Seal the open fittings of components with a cap or
plug immediately to prevent intrusion of moisture or
dust.

Do not remove the sealing caps from a replacement
component until it is ready to be installed.

Before connecting an open fitting, always install a new
sealing ring. Coat the fitting and seal with refrigerant
oil before making the connection.

Moisture

Dust

Plug

LQAC003B

AIR CONDITIONING SYSTEM

HA -7

WHEN INSTALLING CONNECTING PARTS

FLANGE WITH GUIDE PIN

Check the new O-ring for damage (use only the specified)
and lubricate it using compressor oil. Tighten the nut to
specified torque.

Stud bolt

Guide pin

Female fitting

Pushing

Nut

Male fitting

LQAC003C

Tightening torque [ N.m (kg.m, lbf.ft) ]

General bolt, nut

Size

5-6

(0.5 - 0.6, 3.6 - 4.3)

9-11

(0.9 - 1.1, 6.5 - 7.9)

12-14

(1.2 - 1.4, 8.7 - 10)

20 - 26

(2.0 - 2.6, 14 - 18)

M10

25 - 28)

(2.5 - 2.8, 18 - 20

45 - 55

(4.5 - 5.5, 32 - 39)

Flange bolt, nut

Size

5-7

(0.5 - 0.7, 3.6 - 5.0)

8-12

(0.8 - 1.2, 5.8 - 8.6)

10-15

(1.0 - 1.5, 7 - 10)

19 - 28

(1.9 - 2.8, 14 - 20)

M10

21 - 31

(2.1 - 3.1, 15 - 22)

39 - 60

(3.9 - 6.0, 28 - 43)

HANDLING TUBING AND FITTINGS

The internal parts of the refrigeration system will remain in
a state of chemical stability as long as pure moisture-free
refrigerant and refrigerant oil are used. Abnormal amounts
of dirt, moisture or air can upset the chemical stability and
cause problems or serious damage.

THE FOLLOWING PRECAUTIONS MUST BE

OBSERVED

When it is necessary to open the refrigeration system,
have everything you will need to service the system
ready so the system will not be left open any longer
than necessary.

Cap or plug all lines and fittings as soon as they are
opened to prevent the entrance of dirt and moisture.

All lines and components in parts stock should be
capped or sealed until they are ready to be used.

Never attempt to rebind formed lines to fit. Use the
correct line for the installation you are servicing.

All tools, including the refrigerant dispensing manifold,
the gauge set manifold and test hoses, should be kept
clean and dry.

HA -8

HEATING, VENTILATION AND AIR CONDITIONING

REFRIGERATION CYCLE

EA6E42C2

EVAPORATOR

Atomized refrigerant evaporates
into gas while taking heat away
from the surroundings through the
action of the blower fan.
(the surroundings will be cooled).

COMPRESSOR

This is driven by a V-belt
from the engine to change
the evaporated refrigerant
into high pressure
(high temperature) gas and
supply it to the condenser.
The magenetic clutch is
installed to enable cycling
of the compressor.

RECEIVER DRIER

BLOWER

Feeds air in the vehicle under
pressure to the evaporator and
feeds cooled air into the vehicle.

CONDENSER

This is installed in front
of the radiator. It cools high
pressure and high temper-
ature refrigerant to its
condensation point and
returns it to high pressure
liquid.

Outside or
Recirc Air

Condenser fan

High pressure and
high temperature gas

High pressure and
mediate temperature liquid

Low pressure and
low temperature liquid

Low pressure and
low temperature gas

Cooled air

Drain hose

EXPANSION VALVE

Allows the refrigerant
to rapidly expand into
low temperature and
low pressure liquid
(atomized)

This is a single body type with
condenser and installed at the
side of condenser.
It stores the refrigerant and
removes the water and foreign
material among of refrigerant.

EQRF004A

AIR CONDITIONING SYSTEM

HA -9

REFRIGERANT SYSTEM SERVICE
BASICS

ECE8B818

REFRIGERANT RECOVERY

Use only service equipment that is U.L-listed and is cer-
tified to meet the requirements of SAE J2210 to remove
HFC-134a(R-134a) from the air conditioning system.

CAUTION

Air conditioning refrigerant or lubricant vapor
can irritate your eyes, nose, or throat.

Be careful when connecting service equip-
ment.

Do not breathe refrigerant or vapor.

If accidental system discharge occurs, ventilate work area
before resuming service.
Additional health and safety information may be obtained
from the refrigerant and lubricant manufacturers.

Connect an R-134a refrigerant
Recovery/Recycling/Charging System (A) to the high-
pressure service port (B) and the low-pressure ser-
vice port (C) as shown, following the equipment man-
ufacturer’s instructions.

SCMHA6003D

EQKE004A

Measure the amount of refrigerant oil removed from
the A/C system after the recovery process is com-
pleted. Be sure to install the same amount of new
refrigerant oil back into the A/C system before charg-
ing.

Content .. 655 656 657 658 ..