Outdoor Unit - Toshiba RAV-SM304SDT-TR Service Manual

12-4. Outdoor Unit

12-4-1. Refrigerant Recovery Control
The "ozone destruction coefficient" of HFC refrigerant is 0 and the discharge regulation is set as anathermal
effect gas.
To this model, a switch which can perform the refrigerant recovery (pump down) by the outdoor unit is mounted
so that it is easy to react against the environment at reinstalling or rejection time.
[Operation method]
<SP56>
1) See the mode of the indoor unit to fan mode.
2) Push the refrigerant recovery switch (SW802) of the outdoor unit for approx. 2 seconds.
The cooling operation starts. (This operation finishes after 10 minutes.)
3) After operation for 3 minutes or more, close the valve at liquid side.
4) After recovering refrigerant, close the valve at gas side.
5) When keeping pushed the refrigerant recovery SW again for approx. 2 seconds, the outdoor unit stops.
6) Stop the indoor unit and then turn off the power supply.
Sub SW P.C. board of
model with 3HP or below
Refrigerant recovery
Exchange
to Cooling
only
Power saving
NOTE
The electric portion of the refrigerant recovery SW on the sub-
board is electrified, therefore be careful to an electric shock.
<SP80>
1) Set the mode of the indoor unit to fan mode.
2) Set all DIP switch SW804 to OFF (Initial status) and then push
the button switch SW801 for approx. 1 second.
The cooling operation starts.
(During this time, D805 (Green LED) flashes.)
This operation finishes by 10 minutes.
3) After operation for 3 minutes or more, close valve at liquid side.
4) After recovery of refrigerant, close valve at gas side.
5) Push the button switch SW801 again for approx. 1 second.
The outdoor unit stops.
6) Stop the indoor unit and then turn off the power supply.
SW802
SW
ON
SW801
Existing
piping
Sub SW P.C. board
– 132 –
Refrigerant recovery
SW
N
W804: All OFF (As initial status)
SW801: Push for 1 second.
The D805 (Green LED)
flashes.
D800
D801
D802
D803
D804
D805