11 Disposal
Installer reference guide
22
(A)RXP20~3 RXF20~35A2V1B
R32 split series
4P513661-2 – 2017.11
11
Disposal
NOTICE
Do NOT try to dismantle the system yourself: the
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.
11.1
Overview: Disposal
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.
11.2
To pump down
DANGER: RISK OF EXPLOSION
Pump down – Refrigerant leakage.
If you want to pump
down the system, and there is a leakage 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.
NOTICE
During pump down operation, stop the compressor before
removing the refrigerant piping. If the compressor is still
running and the stop valve is open during pump down, air
will be sucked into the system. Compressor breakdown or
damage to the system can result due to abnormal pressure
in the refrigerant cycle.
Pump down operation will extract all refrigerant from the system into
the outdoor unit.
1
Remove the valve lid from the liquid stop valve and the gas stop
valve.
2
Carry out the forced cooling operation. See
stop forced cooling" on page 22
3
After 5 to 10 minutes (after only 1 or 2 minutes in case of very
low ambient temperatures (<−10°C)), close the liquid stop valve
with a hexagonal wrench.
4
Check on the manifold if the vacuum is reached.
5
After 2-3 minutes, close the gas stop valve and stop forced
cooling operation.
c
b
a
d
d
e
a
Gas stop valve
b
Closing direction
c
Hexagonal wrench
d
Valve lid
e
Liquid stop valve
11.3
To start and stop forced cooling
There are 2 methods to perform forced cooling operation:
▪ using the indoor unit ON/OFF switch (if present on the indoor
unit).
▪ using the indoor unit user interface.
Method 1: Using the indoor unit ON/OFF switch
1
Press the ON/OFF switch for at least 5 seconds.
Result:
Operation will start.
Result:
Forced cooling stops automatically after 15 minutes.
2
To stop operation, press the ON/OFF switch.
Method 2: Using the indoor unit user interface
3
Set the operation mode to
cooling
.
For the procedure, refer to the chapter "To perform a test run" in the
installation manual of the indoor unit.
