Discovery I (LJ) V8-4.0L (1996)
Refrigerant: Service and Repair
REFRIGERANT RECOVERY, RECYCLING AND RECHARGING
WARNING:
The air conditioning system is charged with a high pressure, potentially toxic refrigerant. Repairs or servicing must only be carried out by an operator
familiar with both the vehicle system and the charging and testing equipment. Wear eye and hand safety protection. Open connections slowly in case
liquid or pressure is present. Allow to bleed off slowly.
All operations must be carried out in a well-ventilated area away from
open flame and heat sources. Always wear safety goggles and gloves when opening refrigerant connections.
CAUTION: Overcharging air conditioning system will cause excessive head pressure.
An air conditioning portable Refrigerant Recovery Recycling Recharging Station for use with Ri34a refrigerant incorporates all the features necessary to
recover refrigerant R134a from the air conditioning system, to filter and remove moisture, to evacuate and recharge with the reclaimed refrigerant. The
unit can also be used for performance testing and air conditioning system analysis.
Recovery And Recycling
1. High pressure servicing connection
2. Low pressure servicing connection
1. Connect a Refrigerant Station to the high and low pressure servicing connections.
2. Operate the refrigerant recovery system according to the manufacturer's instructions.
3. Measure the amount of oil discharged from the system. Add an equal amount of new refrigerant oil to compressor before evacuation sequence.
WARNING: Refrigerant must always be recycled before reuse, to ensure that the purity of the refrigerant is high enough for safe use in the air
conditioning system. Recycling should always be carried out with equipment which is design certified by Underwriter Laboratory Inc.. for compliance
with SAE-J1991. Other equipment may not recycle refrigerant to the required level of purity.
A R134a Refrigerant Recovery Recycling Recharging Station must not be used with any other type of refrigerant.
Refrigerant R134a from domestic and commercial sources must not be used in motor vehicle air conditioning systems.
Evacuation And Recharging
1. Add refrigerant oil to compressor if necessary.
2. Renew the receiver/drier.
CAUTION: When a major repair has been carried out, a leak test should be carried out using inert gas.
3. Connect a Refrigerant Station to the high and low pressure
servicing connections.
CAUTION: Whenever the refrigerant system is opened, the receiver/drier must be renewed immediately before evacuating and recharging the
system.
4. Operate the refrigerant evacuation system according to the manufacturer's instructions.
NOTE: If the vacuum reading is below 700 mm Hg after 15 minutes, suspect a leak in the system. Partially recharge the system and check for
leaks using an electronic leak tester. Check suction lines first, then run the compressor for 5 minutes and then check the high pressure lines.