VACUUM AND REFRIGERANT CHARGE
ENGLISH
41
CAUTION
Do not perform the air purge with refrig-
erant. Make sure to use a vacuum pump
with a vacuum gauge attached.
!
WARNING
Use a vacuum pump or Inert (nitrogen)
gas when performing leakage detection
or air purge.
Use of oxygen, compressed air, or flam-
mable gas causes fire or explosion.
There is a risk of death, injury, fire, or
explosion.
!
Turn on the #5 DIP switch on the outdoor unit
Press the ‘
▶
’ or ‘
◀
’ button to display "SVC"
on 7-segment, then press the ‘
●
’ button
Press the ‘
▶
’ or ‘
◀
’ button to display "Se3"
on 7-segment, then press the ‘
●
’ button
"VACC" is displayed on 7-segment and an
outdoor unit valve, an outdoor EEV and an
indoor EEV are opened.
DIP SWITCH
7-Segment
SW01C ( : confirm)
SW02C ( : backward)
: forward)
SW04C ( X : cancel)
SW01D (reset)
SW03C (
ȭ
ȯ
Ɨ
How to Unset Vacuum Mode
Turn all DIP switches off, then press
the reset button (SW01D) for 2 seconds.
WARNING
While in vacuum mode, the outdoor
operation is stopped and the compressor
is not run.
!
Vacuum mode is
activated
How to Set Vacuum Mode
Setting the Vacuum Mode
This mode is used for a vacuum operation
after removing the refrigerant at the work site
to, for example, replace parts of a compressor
or an outdoor unit or to add or replace an out-
door unit.
VACUUM AND REFRIG-
ERANT CHARGE
Vacuum
Vacuum drying should be made from the serv-
ice port to the connected pipes and the indoor
unit using a vacuum pump with the service
valve of the outdoor unit closed.
(Make sure to vacuum from the service port
of the liquid pipe and the gas pipe.)
When the vacuum capacity reaches 5 torr,
there should be no change in the vacuum
gauge (remained at 5 torr) for one hour.
(Any changes mean a leakage or moisture
detected inside the pipe.)
If there is a possibility of moisture remaining
inside the pipe, vacuum the system for 2
hours and give pressure to the system to 0.05
MPa(0.5 kgf/cm2) with nitrogen.
And then vacuum it again more than one hour
until it reaches 5 torr. Maintain the 5 torr level
for one hour and check whether the vacuum
gauge does not rise or not.
Содержание GP-W500B6C
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