Saab 900 Service Manual page 63

Saab 900
• Remove the receiver shell from the valve unit.
Heating and ventilation system, air conditioning system 854-51
Refit in the reverse order. See the "Technical
specification" for the tightening torques. Top up
with refrigeration oil. (See the section on refri-
geration oil.) Lubricate all pipe couplings with re-
frigeration oi I. Charge the system with refrige-
rant. (See the section on discharging and charg-
ing.)
Changing the desiccant bag and clean-
: ing the filter - VIR unit
• Drain the system of refrigerant.
• Disconnect all the hose connections to the VIR
unit (use two spanners).
• Slacken off the receiver clamp and I ift out the
VIR unit.
Note
: To preventthe unnecessary intrusion of moisture
into the system components, blank off all open-
. ings and do not re-open until they are to be con-
nected.