11.1.3. Evacuation of Re-installation
WHEN REINSTALLING AN AIR CONDITIONER, BE SURE TO
EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES
in the following procedure.
1.
Connect a charging hose with a push pin to the Low
side of a charging set and the service port of the 3-way
valve.
•
Be sure to connect the end of the charging hose with the
push pin to the service port.
2.
Connect the centre hose of the charging set to a
vacuum pump.
3.
Turn on the power switch of the vacuum pump and
make sure that the needle in the gauge moves from 0
MPa (0 cmHg) to -0.1 MPa (-76 cmHg). Then evacuate
the air for approximately ten minutes.
4.
Close the Low side valve of the charging set and turn
off the vacuum pump. Make sure that the needle in the
gauge does not move after approximately five minutes.
BE SURE TO TAKE THIS PROCEDURE IN ORDER TO
AVOID GAS LEAKAGE.
5.
Disconnect the charging hose from the vacuum pump.
6.
Charge the pipes and indoor unit with gas refrigerant
from 3-way valve service port, and then discharge the
refrigerant until low side (gas side) gauge needle
indicates 0.3 MPa (3 kg/cm
2
).
If air remain in the indoor unit and refrigeration pipes, it will
affect the compressor, reduce to cooling capacity, and could
lead to a malfunction.
7.
Tighten the service port cap at a torque of 18 N.m with
a torque wrench.
8.
Remove the valve caps of the 2-way valve and the 3-
way valve. Position both of the valves to “open” using
a hexagonal wrench (4 mm).
9.
Mount the valve caps onto the 2-way and 3-way valves.
•
BE SURE TO USE REFRIGERANT RECLAIMING
EQUIPMENT
WHILE
DISCHARGING
THE
REFRIGERANT.
•
Purge the air from charge set’s centre hose.
•
Be sure to check for gas leakage.
Caution
If gauge needle does not move from 0 MPA (0 cmHg)
to -0.1 MPa (-76 cmHg) in step (3) above, take the
following measures:
If the leaks stop when the piping connections are
tightened further, continue working from step 3.
If the leaks do not stop when the connections are
retightened, repair the location of the leak.
Procedure:
54
CS-A18DKD CU-A18DKD / CS-A24DKD CU-A24DKD
Summary of Contents for CS-A18DKD
Page 11: ...4 2 Outdoor Unit 4 2 1 CU A18DKD CU A24DKD 11 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 12: ...5 Refrigeration Cycle Diagram 12 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 13: ...6 Block Diagram 13 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 14: ...7 Wiring Diagram CS A18DKD CU A18DKD CS A24DKD CU A24DKD 14 ...
Page 35: ...9 Operating Instructions 35 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 36: ...36 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 37: ...37 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 38: ...38 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 39: ...39 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 40: ...40 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 45: ...3 For the embedded piping 45 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 70: ...14 Technical Data 14 1 Thermostat characteristics 70 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 71: ...14 2 Operation characteristics 71 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 72: ...72 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 81: ...81 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...
Page 83: ...19 2 Remote Control 83 CS A18DKD CU A18DKD CS A24DKD CU A24DKD ...