Disposal; Overview: Disposal; About Pump Down; To Pump Down - Daikin RZAG71N V1B Series Installer's Reference Manual

12 Disposal

12.1 Overview: Disposal

12.2 About pump down

12.3 To pump down

RZAG71~140N
Sky Air Alpha-series
4P695307-1A – 2024.02
NOTICE
Do NOT try to dismantle the system yourself: dismantling of the system, treatment of
the refrigerant, oil and other parts MUST comply with applicable legislation. Units
MUST be treated at a specialised treatment facility for reuse, recycling and recovery.
Typical workflow
Disposing of the system typically consists of the following stages:
1 Pumping down the system.
2 Bringing the system to a specialized treatment facility.
INFORMATION
For more details, see the service manual.
The unit is equipped with an automatic pump down function, with which you can
collect all refrigerant from the system into the outdoor unit.
NOTICE
The outdoor unit is equipped with a low pressure switch or a low pressure sensor to
protect the compressor by turning it OFF. NEVER short-circuit the low pressure
switch during pump down operation.
DANGER: RISK OF EXPLOSION
Pump down – Refrigerant leakage. If you want to pump down the system, and there
is a leak in the refrigerant circuit:
▪
Do NOT use the unit's automatic pump down function, with which you can collect
all refrigerant from the system into the outdoor unit. Possible consequence: Self-
combustion and explosion of the compressor because of air going into the
operating compressor.
▪
Use a separate recovery system so that the unit's compressor does NOT have to
operate.
CAUTION
Do not use the unit's automatic pump down function if the total piping length
exceeds the chargeless length. A fraction of the refrigerant could be left in the circuit.
1 Turn ON the main power supply switch.
2 Make sure the liquid stop valve and the gas stop valve are open.
12 Disposal
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Installer reference guide
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