Air Tight Test - Hisense AVW-48UESC Installation & Maintenance Manual

Bottom Side Piping Work
Liquid Piping
Liquid Piping
Bottom Side Piping Hole
c
Rear Piping Work
To avoid damage protect cables and
pipes with rubber sheath (Field-
Pipe Cover
Insulation Pipe
To prevent gaps use a rubber bush and
insulation (Factory-Supplied) adequately
when installing the piping cover. Cut the
lower side guide line of the piping cover
when attaching work is difficult.
5.5

Air Tight Test

(1) The stop valve has been closed before
shipment, however, make sure that the stop
valves are closed completely.
(2) Connect the indoor unit and the outdoor
unit with field-supplied refrigerant piping.
Suspend the refrigerant piping at certain
points and prevent the refrigerant piping
from touching the weak part of the building
such as wall, ceiling, etc.
(If touched, abnormal sound may occur due
to the vibration of the piping. Pay special
attention in case of short piping length.)
Power Wire
Gas Piping
Knock Out Hole
Bottom Base
Rear Cover
Rear Piping Guide Hole
Supplied).
Rubber Sheath(attatch part)
Cut a "+" shape gap at rubber sheath
center,wire lead rubber sheath.
Gas Pipe
Power and Transmission Wire
Liquid Pipe
(3) Apply the oil thinly at the seat surface of the
flare nut and pipe before tightening.
And when tightening the flare nut, use two
spanners.
Lubrication Oil is field-supply.
Model: FVC68D (Ether Oil)
Manufacturer: IDEMITSU KOSAN Co., Ltd.
Procedure
Completion Applying
of Ref. Nitrogen
Piping Gas
(4) Stop Valve
Fig.5.3 Stop Valve Position
Operation of the stop valve should be
performed according to the below.
<Liquid Valve>
Check Joint
(
Only the charging hose
can be connected
Tighten the cap with a
torque below.
Liquid Valve:16N m Cap
Tighten the cap with a
torque below.
(Attach this after work)
.
Gas Valve:49N m
Liquid Valve:37N m
O-Ring
(rubber)
Refrigerant Piping
Hexagonal
Wrench(Size:4mm)
(
To open or close
spindle valve
13
Check of
Pressure
Decrease
Repairing
of Leakage
Part
Do not apply two spanners
at this posotion.If applied,
leakage will occur
Use two spanners
here to squeeze
flare nut
)
. Spindle Valve
Counterclockwise
Clockise
Close before shipment
.
Ref.Pressure
Refrigerant Piping
Liquid Stop Valve
)
Pass
. . ..
Open
. . ..
Close