Instruction Booklet KHEOS
20 ENGL ISH
EN
5.7.1 Oil/UV tracer recharge
Use only PAG or ESTER oils for lubrication of automotive A/C systems containing R134a refrigerant.
In the event of improper use of the unit, with consequent oil contamination, switch the unit off immediately and
contact our Technical Service Dept
Do not use solvent based additives.
Do not use sealing liquids
- Oil must be charged by means of the “Oil” valve (fig.1), through which they will be drawn up due to the vacuum formed, before
pressing the OK button for gas charge.
- Rotate the valve to the left to charge the content of the bottle on the left which is used for oil.
Avoid pulling out the containers as much as possible to reduce the entry of humid air from the outside.
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’s 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 performed with the engine on. The other phases strictly with the engine off.
Fig.
1
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