862 HVAC (a) Recovery and Recycling The following procedure is typical for the use of Refrigerant Recovery, Recycling and Recharging station or Refrigerant Recovery Unit (RRU) when recovering refrigerant from a car air conditioning system. 1. Connect a Refrigerant Station to the high and low pressure servicing connections located inside hood. High pressure line Low pressure line 2. Operate the refrigerant recovery system according to the manufacturer’s instructions and recover the refrigerant and oil from the vehicle. 3. Measure the amount of oil discharged from the system. Add an equal amount of new refrigerant oil before evacuation sequence. WARNING: 1. 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. 2. R134aRefrigerant Recovery RecyclingRecharging Station must not be used with any other type of refrigerant. REFRIGERANT RECOVERY, RECYCLING AND RECHARGING WARNING : 1. 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. 2. All operations must be carried out in a wellventilated area away from open flame and heat sources. 3. Always wear safety goggles and gloves when opening refrigerant connections. Wear eye and hand safety protection. Open connections slowly in case liquid or pressure is present. Allow to bleed off slowly. CAUTION: Overcharging air conditioning system will cause excessive head pressure. An air conditioning portable Refrigerant Recovery Recycl ing Recharging Stat ion or Refrigerant Recovery Unit (RRU) for use with R134a 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. The operator must adhere to the equipment manufacturers’ instructions. The RRU set up is as shown in following figure:
RkJQdWJsaXNoZXIy MTIwNTUz