Chrysler 1997 Stratus Convertible RHD Service Manual page 1135

JX
DIAGNOSIS AND TESTING (Continued)
TEMPERATURE REFERENCE CHART
AMBIENT TEMP.
CELSIUS FAHRENHEIT
15.5° 60°
21.1° 70°
26.6° 80°
32.2° 90°
supply hose). If coolant return hose is much cooler
than the supply hose, locate and repair engine cool-
ant flow obstruction in heater system.
POSSIBLE LOCATIONS OR CAUSE OF
OBSTRUCTED COOLANT FLOW
(1) Pinched or kinked heater hoses.
(2) Improper heater hose routing.
(3) Plugged heater hoses or supply and return
ports at cooling system connections, refer to Group 7,
Cooling System.
(4) Plugged heater core.
(5) Air locked heater core.
(6) If coolant flow is verified and outlet tempera-
ture is insufficient, a mechanical problem may exist.
POSSIBLE LOCATION OR CAUSE OF
INSUFFICIENT HEAT
(1) Obstructed cowl air intake.
(2) Obstructed heater system outlets.
(3) Blend-air door not functioning properly.
TEMPERATURE CONTROL
If temperature cannot be adjusted with the TEMP
lever on the control panel, the following could require
service:
(1) Blend-air door binding.
(2) Faulty blend-air door motor.
(3) Improper engine coolant temperature.
(4) Faulty Instrument Panel Control.
SYSTEM OIL LEVEL
It is important to have the correct amount of lubri-
cant in the A/C system to ensure proper lubrication
of the compressor. Too little lubricant will result in
damage to the compressor. Too much lubricant will
reduce the cooling capacity of the system and conse-
quently result in higher discharge air temperatures.
The lubricant used in the compressor is polyalka-
lene glycol PAG lubricant. Only refrigerant lubricant
approved for use with R-134a should be used to ser-
vice the system. Do not use any other lubricant. The
lubricant container should be kept tightly capped
until it is ready for use. Refrigerant lubricant will
quickly absorb any moisture it comes in contact with.
MINIMUM OUTLET
FLOOR TEMP.
CELSIUS FAHRENHEIT
62.2° 144°
63.8° 147°
65.5° 150°
67.2° 153°
HEATING AND AIR CONDITIONING
It is not necessary to check or add lubricant unless
it has been lost. Lubricant loss at the leak point will
be evident by the presence of a wet, shiny surface
around the leak.
REFRIGERANT OIL LEVEL CHECK
When an air conditioning system is first assembled,
all components (except the compressor) are refrigerant
oil free. After the system has been charged with
(R-134a) refrigerant and operated, the oil in the com-
pressor is dispersed through the lines and compo-
nents. The evaporator, condenser, and receiver/drier
will retain a significant amount of oil. Refer to the A/C
Component Refrigerant Oil Capacities chart below.
When a component is replaced, the specified amount
of refrigerant oil must be added. When the compressor
is replaced, the amount of oil that is retained in the
rest of the system must be drained from the replace-
ment compressor. When a line or component has rup-
tured and oil has escaped, the compressor should be
removed and drained. The receiver/drier must be
replaced along with the ruptured part. The oil capac-
ity of the system, minus the amount of oil still in the
remaining components, can be measured and poured
into the suction port of the compressor.
Example: On an A/C system the evaporator retains 60
ml. (2 oz.). The condenser retains 30 ml. (1 oz.) of oil,
and system capacity may be 150 ml. (5.00 oz.) of oil.
150 ml. minus 90 ml. equals 60 ml. (2.00 oz.).
A/C COMPONENT REFRIGERANT OIL CAPACITIES
COMPONENT NAME
Total Air Conditioning System
Condenser
Evaporator
Filter/Drier
Line Blown
CAUTION: The refrigerant oil used in a R-134a A/C
system is unique. Use only oils which were designed
to work with R-134a refrigerant. The oil designated for
this vehicle is SP15 PAG (polyalkalene glycol).
VERIFY REFRIGERANT LUBRICANT LEVEL
(1) Discharge refrigerant system using a recycling/
reclaiming equipment if a charge is present.
(2) Disconnect refrigerant lines from A/C compres-
sor. Cap the open lines to prevent moisture from
entering system.
(3) Remove compressor from vehicle.
(4) From suction and discharge ports on top of
compressor, drain lubricant from compressor.
(5) Add system capacity minus the capacity of
components that have not been replaced. Refer to the
24 - 7
ml. oz.
150 ml. 5.00 oz.
30 ml. 1.00 oz.
59 ml. 2.00 oz.
30 ml. 1.00 oz.
44 ml. 1.50 oz.