Volvo 850 Manual
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Brand: Volvo
Category: Automobile , Automobile Accessories , Automobile Parts , CD Player
Type: Manual for Volvo 850
Pages: 10 (0.26 Mb)
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A/C-HEATER SYSTEM - MANUAL
1995 Volvo 850
1995-96 Manual A/C-Heater Systems
Volvo 850
* PLEASE READ THIS FIRST *
WARNING: To avoid injury from accidental air bag deployment,
read and carefully follow all SERVICE PRECAUTIONS and
DISABLING & ACTIVATING AIR BAG SYSTEM procedures in the
AIR BAG RESTRAINT SYSTEM article in the ACCESSORIES/SAFETY
EQUIPMENT section.
CAUTION: When battery or radio is disconnected, radio will go into
anti-theft protection mode. Obtain radio code anti-theft
protection code from owner prior to servicing vehicle.
A/C SYSTEM SPECIFICATIONS
SPECIFICATIONS
Application Specification
Compressor Type ......................... Zexel DKS-15CH 6-cyl.
Compressor Belt Tension (1)
System Oil Capacity .............................. ( 2) 6.8 ozs.
Refrigerant Capacity (R-134a) ....................... 26.4 ozs.
System Operating Pressures (3)
High Side ..................... 406-450 psi (28.5-31.6 kg/cm
)
Low Side .......................... 25-33 psi (1.8-2.3 kg/cm
)
(1) - Belt tension is maintained by automatic belt tensioner.
(2) - Use PAG Oil (Part No. 11 61 407-0)
(3) - Pressure switch cut-out points.
DESCRIPTION & OPERATION
System is equipped with a cycling clutch system that uses an
expansion valve in refrigerant line between condenser and evaporator,
near condenser. System is engaged when A/C switch on control panel is
pressed. See Fig. 1. Pressure switch on accumulator cycles compressor
clutch on and off. Blower fan speed is controlled by sliding switch on
lower left of A/C-heater control panel.
Airflow modes are controlled by center knob on A/C-heater
control panel. Mode doors are controlled by cables on left side of
climate control unit. See Fig. 2. Temperature blend (air mix) doors,
located on driver and passenger side respectively, is selected by left
or right knob on A/C-heater control panel. Doors are controlled by
cables on left side and center of climate control unit.
Fresh/recirculated air is selected by switch to lower right
of mode knob on A/C-heater control panel. Door is controlled by
recirculation motor on upper half of climate control unit. Air
conditioning system will only operate above 32
F (0 C). Blower switch
must be in position "1" or higher to engage compressor.
A/C compressor is connected in series with the low-pressure
switch, high-pressure switch, and safety switch. The high-pressure and
safety switch cut power to the A/C compressor if pressure in the A/C
high-pressure circuit becomes excessive, supplying a signal to ECM to