Removal And Installation; Service Warnings And Precautions - Dodge 2000 DURANGO Service Manual

DN
SERVICE PROCEDURES (Continued)
(1) Connect a R-134a refrigerant recovery/recy-
cling/charging station that meets SAE Standard
J2210 and a manifold gauge set to the refrigerant
system of the vehicle.
(2) Open the low and high side valves and start
the charging station vacuum pump. When the suc-
tion gauge reads 88 kPa (26 in. Hg.) vacuum or
greater, close all of the valves and turn off the vac-
uum pump.
(a) If the refrigerant system fails to reach the
specified vacuum, the system has a leak that must
be corrected. See Refrigerant System Leaks in the
Diagnosis and Testing section of this group for the
procedures.
(b) If the refrigerant system maintains the spec-
ified vacuum for five minutes, restart the vacuum
pump, open the suction and discharge valves and
evacuate the system for an additional ten minutes.
(3) Close all of the valves, and turn off the charg-
ing station vacuum pump.
(4) The refrigerant system is now ready to be
charged with R-134a refrigerant. See Refrigerant
System Charge in the Service Procedures section of
this group.

REMOVAL AND INSTALLATION

SERVICE WARNINGS AND PRECAUTIONS

WARNING:
• THE AIR CONDITIONING SYSTEM CONTAINS
REFRIGERANT UNDER HIGH PRESSURE. SEVERE
PERSONAL INJURY MAY RESULT FROM IMPROPER
SERVICE PROCEDURES. REPAIRS SHOULD ONLY
BE PERFORMED BY QUALIFIED SERVICE PERSON-
NEL.
HEATING AND AIR CONDITIONING
• AVOID BREATHING THE REFRIGERANT AND
REFRIGERANT OIL VAPOR OR MIST. EXPOSURE
MAY IRRITATE THE EYES, NOSE, AND/OR THROAT.
WEAR EYE PROTECTION WHEN SERVICING THE
AIR CONDITIONING REFRIGERANT SYSTEM. SERI-
OUS EYE INJURY CAN RESULT FROM DIRECT
CONTACT WITH THE REFRIGERANT. IF EYE CON-
TACT OCCURS, SEEK MEDICAL ATTENTION IMME-
DIATELY.
• DO NOT EXPOSE THE REFRIGERANT TO
OPEN FLAME. POISONOUS GAS IS CREATED
WHEN REFRIGERANT IS BURNED. AN ELEC-
TRONIC LEAK DETECTOR IS RECOMMENDED.
• IF
ACCIDENTAL
OCCURS, VENTILATE THE WORK AREA BEFORE
RESUMING SERVICE.
REFRIGERANT RELEASED IN A CLOSED WORK
AREA WILL DISPLACE THE OXYGEN AND CAUSE
SUFFOCATION.
• THE EVAPORATION RATE OF R-134a REFRIG-
ERANT AT AVERAGE TEMPERATURE AND ALTI-
TUDE IS EXTREMELY
ANYTHING THAT COMES IN CONTACT WITH THE
REFRIGERANT WILL FREEZE. ALWAYS PROTECT
THE SKIN OR DELICATE OBJECTS FROM DIRECT
CONTACT WITH THE REFRIGERANT.
• THE R-134a SERVICE EQUIPMENT OR THE
VEHICLE REFRIGERANT SYSTEM SHOULD NOT BE
PRESSURE 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 PROP-
ERTY DAMAGE.
24 - 29
SYSTEM DISCHARGE
LARGE AMOUNTS
HIGH. AS A RESULT,
OF