Refrigerant Charge - Astralpool OPTIMA Serie Manual Tecnico

8. REFRIGERANT CHARGE.

For the procedures described below, we recommend you contact a professional specialised in heatingand air
conditioning units.
Draining the Cooling Circuit:
It is imperative to drain the cooling circuit before charging the refrigerant.
- First draining procedure:
A. Connect the gauge tubes to the intake pressure lines of the circuit (low pressure) and to the return pressure
lines (high pressure).
B. Connect the main line of the gauge to the vacuum pump.
C. Open all the valves, including the solenoid and the regulating valves.
D. Open the valves of the gauge (LO = low pressure valve / HI = high pressure valve).
E. Activate the vacuum pump and wait until the circuit is completely drained.
F. Close all valves or stopcocks and disconnect the vacuum pump.
Refrigerant Charge:
The equipment uses R-407-C class refrigerant, which is a blend of 3 different gases with different properties.
This is the reason why the gas taken from the refrigerant bottle must be introduced in the low-pressure circuit by means
of a charger (expansion system).
After having discharged the cooling circuit, and after having installed the charger and connected the flexible tubes of the
gauge to the high and low-pressure circuits, we can proceed with the charge:
1.- High and low pressure switches.
2.- Low pressure circuit (blue).
3.- vacuum pipe/ gas charge (yellow).
4.- low pressure circuit (red).
5.- vacuum pump (yellow).
6.- high pressure valve (red).
7.- low pressure valve(blue).
1.- High and low pressure switches
2.- low pressure circuit (blue).
3.-vacuum pipe/ gas charge (yellow).
4.- low pressure circuit (red).
5.- R407 gas (yellow).
6.- high pressure valve (red).
7.- low pressure valve(blue).
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ENGLISH