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8.4.1
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•
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(the larger one)
• Connect the service valve to a manometric unit plus oxigen free nitrogen (OFN) bottle.
•
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2
) using the oxigen free nitrogen (OFN) in the bottle.
• Use liquid soap to check that the joints are tight and without leaks.
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•
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sure that the unions have been tightened and that the flares are the right shape.
•
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•
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• Having reduced the pressure, disconnect the nitrogen bottle.
CAUTION
The airtight testing should never use any oxygen, flammable gas or poisonous gas.
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fig. 14 - Airtight test and leakage detection
8.4.2 Air purge with vacuum pump
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subsequent blockage of the same, corrosion in the circuit.
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•
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• Turn on the relative knob on the monometric unit to allow the pump to access the cooling circuit.
•
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• As soon as the required vacuum value is reached, shut the connection cock and stop the vacuum pump.
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fig. 15 - Air purge with vacuum pump
Note
OU
= Outdoor
unit
IU
=
Indoor unit
Summary of Contents for IDOLA SW-T 3.2
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