AERMEC SGE250, Руководство по установке

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14
VAC
5
OFF
When the vacuum pump shows a sufficient level of vacuum, wait a few minutes
and then proceed with the following operations:
• Close the yellow valve marked “VAC”.
• Switch off the vacuum pump.
• Check that the vacuum gauge does not show a drop in the vacuum level
compared with when the pump was operating.
15
VAC
5
ON
If the vacuum level reading does not change (an indication that the cooling
circuit is not leaking):
• Switch the vacuum pump back on.
• Open the valve marked “VAC”.
• Continue to create the vacuum for a few minutes.
16
LOW
HIGH
VAC
3
4
5
Close the valves marked “LOW”, “VAC” and “HIGH”.
• Wait a few minutes and then switch on the unit in Cooling mode.
17
LOW
HIGH
VAC
REF
3
4
5
6
TOPPING UP THE REFRIGERANT GAS; Depending on the length of the lines, if the
installation needs topping up with refrigerant gas, proceed as follows:
• Switch on the unit in Cooling mode.
• Leave the LP hose connected to the pressure gauge unit.
• The valve marked “VAC” should be kept closed.
• Connect the cylinder of refrigerant gas to the hose connected to the pressure
gauge unit connection (see the connection circled in the figure).
• Open the tap on the cylinder (which must be fitted with an immersed hose).
• Bleed the air from the hose leaving the connection on the pressure gauge unit
slightly loose until the gas does not flow out, then slowly tighten the connection.
• Open the valve marked “LOW”.
• Position the cylinder on electronic scales.
• Open the valve marked “REF” in short bursts, in order to add the required amount
of refrigerant..
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