Samsung DH32ZA1 - Refrigerant Refill Procedure

SAMSUNG | 41
INSTALLATION
3
Air-Purge Procedure
3-5. Air-Purge Procedure
● Use the vacuum pump to remove N2 gas or air inside the indoor unit and pipes.
Indoor Unit
DC
BA
Outdoor Unit
Half union
Suction(gas)
pipe side
Suction(gas)
valve
Liquid
pipe side
Liquid
valve
Suspension hook
High
pressure
gauge
Hand
wheel
Finger tight
fittings
Connected to
high pressure
side
Charging
line
Vacuum pump
For mounting
other end of
hose when
not in use
3-way valve
Liquid
Valve
Suction
Valve
1
Tighten all pipe connections (A, B, C, D)
to prevent any leakage.
2
Check that the suction and liquid valves are
turned off clockwise to close the outdoor unit.
3
Remove the cap on the opposite side of the
Suction tube connection (A) and connect a hose
from the pressure gauge of which other end is
connected to the vacuum pump.
4
Operate the vacuum pump enough until the
pressure gauge indicates “0”.
5
Disconnect the hose from the suction valve
carefully not to break the vacuum.
7
Check the leakage on the connections.
(A, B, C, D)
8
Check each valve for leakage.
6
Turn on the suction and liquid valves
counterclockwise to open the outdoor unit to
the indoor unit.
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