Saab 900 Service Manual page 50

854-38 Heating and ventilation system, air conditioning system
Draining and charging the sys-
tem (refrigerant)
T?'
t
Caution
Before work is started, disconnect the
cable from the negative pole of the bat-
tery.
Equipment required
Filling station - Refco 11705
Refrigerant cylinder connected to filling station
Leak detector - TIF 5000
Thermometer
Closely fitting protective goggles and gloves
Valves with extension pieces for connection to
the hoses are recommended. These minimize re-
frigerant losses when charging the system.
Important points on handling the equip-
ment
Before use: Check the oil level in the sight glass
on the vacuum pump. If necessary, top up with
Virginia 2890 special vacuum pump oil or the
. equivalent. Do not overti!.
1 Ballast valve
2 Oil filler cap
3 011 sight glass
4 Measuring cylinder heater switch
5 Vacuum pump switch
Saab900