9-3 Viggen Coupe (9400) L4-2.3L Turbo (B235) HO (1999)
2
Turn in the knob clockwise so that the valve is opened and the refrigerant can pass through the connection.
When the snap-on couplings are disconnected, first turn the knob (2) counter-clockwise to close the valve. Then remove the snap-on coupling by
pressing the spring-loaded catch (3) so that the locking sleeve (4) can be pulled up.
When the catch is pressed in, a hissing sound will be heard as the catch also serves to evacuate any refrigerant trapped in the snap-on coupling. The
connections on the low-pressure and high-pressure side are of differing size to eliminate the risk for any mix-ups.
Checking Pressure With Robinair 10324 Smart Cart
1
Check to make sure that the valves on both the blue low-pressure and the red high-pressure hoses on the pressure gauge unit are closed.
2
Connect the blue low-pressure hose with a snap-on coupling to the A/C system low-pressure side.
3
Connect the red high-pressure hose with a snap-on coupling to the A/C system high-pressure side.
4
Open the valves on both snap-on couplings by turning in the knobs.
5
Start the engine.
At an engine speed of 1500 - 2000 rpm and an ambient temperature of 20 °C, it should be possible to note the following on the pressure gauges
when the compressor is operating:
Low-pressure side: 1.5 - 2.5 bar
Purging with the Robinair 10324 Smart Cart and Robinair 17234 purging station