31
After purging the air, use a torque wrench to
tighten the flare nut on the 2-way valve.
4). Check the gas leakage.
Check the flare connections for gas leakage.
5). Discharge the refrigerant.
Close the valve on the charging cylinder and
discharge the refrigerant by loosening the flare
nut on the 2-way valve approximately
45’ until
the gauge indicates
0.3Mpa(43.5Psi) to 0.5
Mpa(72.5Psi).
6). Disconnect the charge set and the charging
cylinder, and set the 2-way and 3-way valves to
the open position.
Be sure to use a hexagonal wrench to operate
the valve stems.
7). Mount the valve stems nuts and the service
port cap.
Be sure to use a torque wrench to tighten the
service port cap to a torque 18N·m.
Be sure to check the gas leakage.
3.
Adding refrigerant if the pipe
length >7.5m(0.3in)
Procedure:
1). Connect the charge hose to the charging
cylinder, open the 2-way valve and the 3-way
valve.
Connect the charge hose which you
disconnected from the vacuum pump to the
valve at the bottom of the cylinder. If the
refrigerant is R410A, make the cylinder bottom
up to ensure the liquid charge.
2). Purge the air from the charge hose.
Open the valve at the bottom of the cylinder
and press the check valve on the charge set to
purge the air (be careful of the liquid refrigerant).
3) Put the charging cylinder onto the electronic
scale and record the weight.
4) Operate the air conditioner at the cooling
mode.
5) Open the valves (Low side) on the charge set
and charge the system with liquid refrigerant.
6).When the electronic scale displays the
proper weight (refer to the table), disconnect the
charge hose from the 3-
way valve’s service port
immediately and turn off the air conditioner
7). Mount the valve stems nuts and the service
port cap.
Be sure to use a torque wrench to tighten the
service port cap to a torque 18N·m.
Be sure to check the gas leakage.
7.5 Adding the refrigerant after running
the system for many years
Procedure
1). Connect the charge hose to the 3-way
service port, open the 2-way valve and the
3-way valve.
Connect the charge hose to the valve at the
bottom of the cylinder. If the refrigerant is
R410A, make the cylinder bottom up to ensure
liquid charge.
2). Purge the air from the charge hose.
Open the valve at the bottom of the cylinder
and press the check valve on the charge set to
purge the air (be careful of the liquid
refrigerant).
3) Put the charging cylinder onto the electronic
scale and record the weight.
4) Operate the air conditioner at the cooling
mode.
5) Open the valves (Low side) on the charge set
and charge the system with liquid refrigerant.
Electronic scale
Summary of Contents for MSV1-09HRFN1-MT0W
Page 20: ...16 6 Wiring Diagram 6 1 Indoor Unit MSV1 09HRFN1 MT0W MSV1 12HRFN1 MT0W...
Page 21: ...17 MSV1 12HRDN1 MQ0W...
Page 22: ...18 MSV1 18HRDN1 MQ0W MSV1 24HRDN1 MQ0W...
Page 23: ...19 6 2 Outdoor Unit MOC 09HFN1 MTOW MOC 12HFN1 MTOW...
Page 24: ...20 MOC 12HDN1 MQ0W...
Page 25: ...21 MOC 12HDN1 MQ0W with low ambient temp cooling function...
Page 26: ...22 MOF 18HDN1 MQ0W...
Page 27: ...23 MOF 18HDN1 MQ0W with low ambient temp cooling function...
Page 28: ...24 MOG 24HDN1 MQOW...
Page 29: ...25 MOG 24HDN1 MQOW with low ambient temp cooling function...
Page 30: ...26 MOC 09HFN1 MTOW MOC 12HFN1 MTOW...
Page 31: ...27 MOC 12HDN1 MQ0W...
Page 32: ...28 MOF 18HDN1 MQ0W MOG 24HDN1 MQOW...
Page 60: ...56...
Page 63: ...59 P U P V...
Page 64: ...60 P W P N...
Page 90: ...86 16 2 Capacitor clip 1 201200100002 35 Electric heater of chassis 1 202403100187...