Air purging
24
Vacuum pump
Charge hose
Manifold valve
-76cm/Hg
Charge
hose
Handle Lo
Handle Hi
Outdoor unit
Indoor unit
When using the vacuum pump
For method of u
s
ing a manifold valve, refer to it
s
operation manual.
manifold valve.
evacuate. After
s
tarting evacuation,
s
lightly loo
s
e the flare nut of the
Lo valve on the ga
s
pipe
s
ide and
check if the air i
s
entering (Operation
noi
s
e of the vacuum pump change
s
and a compound meter indicate
s
0 in
s
tead of minu
s
), then tighten
the flare nut. The procedure verifie
s
if there are block
s
in
s
ide the tube
s
.
valve B about 45
counterclockwi
s
e for 6~7
out, then tighten the flare nut
again. Make
s
ure the pre
ss
ure
di
s
play in the pre
ss
ure indicator i
s
a little higher than the atmo
s
phere
pre
ss
ure. Thi
s
procedure verifie
s
if
the refrigerant goe
s
through the
tube
s
correctly.
o
manifold valve to the vacuum pump.
s
econd
s
after the ga
s
come
s
5. Make evacuation for 15 minute
s
or more and check that the
compound meter indicate
s
-7.6 x 10 Micron
s
Hg (-1x10 Pa).
5
1. Completely tighten the flare nut
s
at
connection point A, B, C and D.
Connect valve core removal tool to
the charging port, then connect
vacuum ho
s
e to valve core tool.
Open the
s
chrader valve.
Note:
The
s
chrader valve i
s
in
s
ide
the charging port.
2. Connect the other charge ho
s
e of
3. Fully open the handle Lo of the
4. Operate the vacuum pump to
packed valve.
9. Securely tighten the cap of the
s
tem
s
B and A.
8. Fully open the packed valve
fully clo
s
e the handle Lo of the
manifold valve and
s
top the
operation of the vacuum pump.
After the evacuation i
s
completed,
6. Turn the
s
tem of the packed
7. Clo
s
e the
s
chrader valve, then
remove the valve core tool.
Replace the charging port cap.
