INNOVAIR DC INVERTER NEXXOS
SERVICE MANUAL
w w w . i n n o v a i r . c o m
1.2 Refrigerant Recharge
/TJUUX[TOZ
2OW[OJYOJK
-GYYOJK
)NKIQ\GR\K
56+4
)259+
)NGXMOTM
:]U]G_\GR\K
:NXKK]G_\GR\K
5[ZJUUX[TOZ
5VKT
5VKT
2U
.O
+RKIZXUTOIYIGRK
I_ROTJKX
Prior to recharging the refrigerant, confirm the additional amount of refrigerant required using the following table:
Models
Standard length
Max. elevation
Max. length
Additional refrigerant
9k&12k
7.5m (24.6ft)
10m (32.8ft)
25m (82.0ft)
15g/m (0.16oz/ft)
18k
7.5m (24.6ft)
20m (65.6ft)
30m (98.4ft)
15g/m (0.16oz/ft)
24k&30k
7.5m (24.6ft)
25m (82.0ft)
50m (164ft)
30g/m (0.32oz/ft)
36k
7.5m (24.6ft)
30m (98.4ft)
65m (213.2ft)
30g/m (0.32oz/ft)
Procedure:
1.
Connect the charge hose to the 3-way service port
and then open the 2- and the 3-way valves.
2.
Connect the charge hose to the valve at the bottom
of the cylinder.
3.
If the refrigerant is R410A, invert the cylinder to
ensure a complete liquid charge.
4.
Open the valve at the bottom of the cylinder and close
the check valve on the charge set to purge the air.
5.
Place the charging cylinder onto an electronic scale
and record the starting weight.
6.
Operate the air conditioner in cooling mode.
7.
Open the valves (Low side) on the charge set and
charge the system with liquid refrigerant.
8.
When the electronic scale displays the correct weight
(refer to the gauge and the pressure of the low side
to confirm), disconnect the charge hose from the
3-way valve’s service port immediately and turn off
the air conditioner before disconnecting the hose.
9.
Mount the valve stem caps and the service port.
10.
Use a torque wrench to tighten the service port cap to
a torque of 18 N.m.
11.
Check for gas leakage.
22
