Confirming The Operation Of Indoor Unit; Pump Down; Customer Guidance - Fujitsu AOU36RLXFZ1 Installation Manual

9. 2. Confirming the operation of indoor unit

Run the unit in a normal way, and confirm its operation. (Please end the test run first
before confirmation)
(1) Cold air (or warm air) must be discharged from the indoor unit.
(2) The indoor unit operates normally when air direction or air volume adjustment button
is pressed.

10. PUMP DOWN

PUMP DOWN OPERATION
To avoid discharging refrigerant into the atmosphere at the time of relocation or disposal,
recover refrigerant by doing the cooling operation or forced cooling operation according
to the following procedure. (When the cooling operation cannot start in winter, and so on,
start the forced cooling operation.)
(1) Do the air purging of the charge hose by connecting the charging hose of gauge
manifold to the charging port of 3 way valve (At lease one unit of connected units) and
opening the low pressure valve slightly.
(2) Close the valve stem of 2 way valve (All connected units) completely.
(3) Start the cooling operation or following forced cooling operation. (All connected
units) When using the remote control unit Press the TEST RUN button after starting
the cooling operation by the remote control unit. The operation indicator lamp and
timer indicator lamp will begin to flash simultaneously during test run. When using
the MANUAL AUTO button of the indoor unit (The remote control unit is lost, and so
on.) Keep on pressing the MANUAL AUTO button of the indoor unit for more than 10
seconds. (The forced cooling operation cannot start if the MANUAL AUTO button is not
kept on pressing for more than 10 seconds.)
(4) Close the valve stem of 3 way valve (All connected units) when the reading on the
compound pressure gauge becomes 7.3 to 0 psi (0.05 to 0 MPa).
(5) Stop the operation. (All connected units) Press the START/STOP button of the remote
control unit to stop the operation. Press the MANUAL AUTO button when stopping the
operation from indoor unit side. (It is not necessary to press on keeping for more than
10 seconds.)
During the pump-down operation, make sure that compressor is off before you remove
the refrigerant piping. Do not remove the connection pipe while the compressor is
in operation with 2 or 3 way valve open. This may cause abnormal pressure in the
refrigeration cycle that breakage and injury.

11. CUSTOMER GUIDANCE

Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, air
flow adjustment, and other remote control unit operations.
(2) Air filter removal and cleaning.
(3) Give the operating manual and installation instruction sheet to the customer
LED is on the reverse
side of the board.
CAUTION
Hole
En-14