Low Refrigerant Level Leak Test; A/C Pressure Transducer; Removal And Installation; Safety Precautions And Warnings - Chrysler 2000 LHS Owner's Manual

24 - 16 HEATING AND AIR CONDITIONING
SERVICE PROCEDURES (Continued)
(2) Prepare a.284 Kg. (10 oz.) refrigerant charge to
be injected into the system.
(3) Connect and dispense.284 Kg. (10 oz.) of refrig-
erant into the evacuated refrigerant system.
(4) Proceed to Step 2 of Low Refrigerant Level
Leak Test.

LOW REFRIGERANT LEVEL LEAK TEST

(1) Determine if there is any (R-134a) refrigerant
in the system. Use the scan tool (DRBIII ) partial
charge test or pressure gauge liquid line temperature
partial charge check. See system charge level check
or fill for procedure.
(2) Position the vehicle in a wind free work area.
This will aid in detecting small leaks.
(3) Bring the refrigerant system up to operating
temperature and pressure. This is done by allowing
the engine to run for five minutes with the system
set to the following:
• Transaxle in Park
• Engine Idling
• A/C Controls Set in 100 percent outside air
• Blower switch in the high A/C position
• A/C in the ON position
• Open all windows
CAUTION: A leak detector designed for R-12 refrig-
erant may not detect leaks in a R-134a refrigerant
system. Check specifications on leak detector.
(4) Shut off the vehicle and wait 2 to 7 minutes.
Then use an Electronic Leak Detector that is
designed to detect R-134a type refrigerant and search
for leaks. Fittings, lines, or components that appear
to be oily usually indicates a refrigerant leak. To
inspect the evaporator core for leaks, insert the leak
detector probe into the drain tube opening or a heat
duct.
If a thorough leak check has been completed with-
out indication of a leak, proceed to System Charge
Level.
NOTE: If leak is not detected but known to exist,
further diagnosis may be necessary using a refrig-
erant dye and the recovery machine. Refer to recov-
ery machine instructions for proper dye injection
procedures.

REMOVAL AND INSTALLATION

SAFETY PRECAUTIONS AND WARNINGS

WARNING: WEAR EYE PROTECTION WHEN SER-
VICING THE AIR CONDITIONING REFRIGERANT
SYSTEM. SERIOUS EYE INJURY CAN RESULT
FROM EYE CONTACT WITH REFRIGERANT. IF EYE
CONTACT IS MADE, SEEK MEDICAL ATTENTION
IMMEDIATELY.
DO NOT EXPOSE REFRIGERANT TO OPEN
FLAME. POISONOUS GAS IS CREATED WHEN
REFRIGERANT IS BURNED. AN ELECTRONIC TYPE
LEAK DETECTOR IS RECOMMENDED.
LARGE AMOUNTS OF REFRIGERANT RELEASED
IN A CLOSED WORK AREA WILL DISPLACE THE
OXYGEN AND CAUSE SUFFOCATION.
THE EVAPORATION RATE OF REFRIGERANT AT
AVERAGE TEMPERATURE
EXTREMELY HIGH. AS A RESULT, ANYTHING THAT
COMES IN CONTACT WITH THE REFRIGERANT
WILL FREEZE. ALWAYS PROTECT SKIN OR DELI-
CATE OBJECTS FROM DIRECT CONTACT WITH
REFRIGERANT. R-134a SERVICE EQUIPMENT OR
VEHICLE A/C SYSTEM SHOULD NOT BE PRES-
SURE TESTED OR LEAK TESTED WITH COM-
PRESSED AIR.
SOME MIXTURES OF AIR and R-134a HAVE BEEN
SHOWN TO BE COMBUSTIBLE AT ELEVATED
PRESSURES. THESE MIXTURES ARE POTENTIALLY
DANGEROUS AND MAY RESULT IN FIRE OR
EXPLOSION CAUSING INJURY OR PROPERTY
DAMAGE.
ANTIFREEZE IS AN ETHYLENE GLYCOL BASE
COOLANT AND IS HARMFUL IF SWALLOWED OR
INHALED. SEEK MEDICAL ATTENTION IMMEDI-
ATELY IF SWALLOWED OR INHALED. DO NOT
STORE IN OPEN OR UNMARKED CONTAINERS.
WASH SKIN AND CLOTHING THOROUGHLY AFTER
COMING IN CONTACT WITH ETHYLENE GLYCOL.
KEEP OUT OF REACH OF CHILDREN AND PETS.
DO NOT OPEN A COOLING SYSTEM WHEN THE
ENGINE IS AT RUNNING TEMPERATURE. PER-
SONAL INJURY CAN RESULT.
CAUTION: The engine cooling system is designed
to develop internal pressure of 97 to 123 kPa (14 to
18 psi). Allow the vehicle to cool a minimum of 15
minutes before opening the cooling system. Refer
to Group 7, Cooling System.

A/C PRESSURE TRANSDUCER

CAUTION: A/C pressure transducer switch connec-
tor terminal contacts can be damaged by probing
tools during system diagnosis and repair. Failure to
use their respective mating terminals or pin gauge
to check for tightness will cause contact beam
spreads. This will result in loss of continuity.
LH
AND ALTITUDE IS