5.8 Pipe draining procedure
1. When the procedure has been completed, keep the high and low pressure pipes connected, close the HP and LP valves, start the
vehicle engine and wait a few minutes for the A/C system to reach full power.
2. If there is only one service point, close the HP or LP valve used and disconnect the pipe from the vehicle.
3. If there are two service points, disconnect the high pressure pipe (HP) from the vehicle and open the HP and LP valves to allow
the gas contained in the pipes to return through the low pressure in the vehicle. Wait until the high and low pressures drop to a value
of about 2 bar, then also disconnect the low pressure pipe (LP).
4. Stop the engine.
This phase must be executed with the engine on, The other phases strictly with the engine off.
5.9 Refrigerant topping-up
If there is refrigerant in the A/C system, the only way to fill the systen with more gas is to perform a TOP-UP operation. To execute
this phase, connect the unit to the A/C system, start the vehicle engine and wait a few minutes for the A/C system to reach its
operating power and stabilize.
- Connect the low pressure pipe.
- Start the engine and the A/C system
- Partially open the low pressure valve (LP)
- Select the “FILLING” operation and press OK to start the cycle.
- Select “GAS”, set the desired quantity and then press OK.
- Select “OIL” , set the quantity to zero and then press OK.
- Select “UV” and “NO”
- Select “START CYCLE” and press OK.
- When charging has been completed, close the LP valve, stop the A/C system and the engine.
This phase must be executed with the engine on, The other phases strictly with the engine off.
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