9 10
For outdoor unit DUO
1) Completely tighten the flare nuts of the indoor and each braches of outdoor unit,
confirm that both the branch valves(Gas and liquid) are set to the closed position.
2) Connect the charge hose with the push pin of handle Lo to the branch valve(Gas)
service port.
3) Connect the charge hose of handle hi connection to the vacuum pump.
4) Fully open the handle Lo of the manifold valve.
5) Operate the vacuum pump to evacuate.
6) Make evacuation for 30 minutes and check whether the compound meter indicates
-0.1Mpa. If the meter does not indicate -0.1Mpa after pumping 30 minutes, it should be
pumped 20 minutes more. If the pressure can’t achieve -0.1Mpa after pumping 50
minutes, please check if there are some leakage points.
Fully close the handle Lo valve of the manifold valve and stop the operation of the
vacuum pump. Confirm that the gauge needle does not move (approximately 5 minutes
after turning off the vacuum pump).
7) Open the branch valve(Gas) about 45° counterclockwise for 6 or 7 seconds after the
gas coming out, then close the valve again. Make sure the pressure display in the
pressure indicator is a little higher than the atmosphere pressure. Then remove the
charge hose from the branch valve(Gas).
8) Fully open the branch valve(Gas and liquid) and securely tighten the cap of the
valves.
9) Perform the same procedure to the other branch valve.
For outdoor unit TRIO/QUATTRO/CINCO
1) Completely tighten the flare nuts of the indoor and each braches of outdoor unit,
confirm that both the main valves(Gas and liquid) are set to the closed position.
2) Connect the charge hose with the push pin of handle lo to the Main valve(Gas)
service port..
3) Connect the charge hose of handle hi connection to the vacuum pump.
4) Fully open the handle Lo of the manifold valve.
5) Fully open the branch valves (A/B/C/D/E)
6) Operate the vacuum pump to evacuate.
7) Make evacuation for 30 minutes and check whether the compound meter indicates
-0.1Mpa. If the meter does not indicate -0.1Mpa after pumping 30 minutes, it should be
pumped 20 minutes more. If the pressure can’t achieve -0.1Mpa after pumping 50
minutes, please check if there are some leakage points.
Fully close the handle Lo valve of the manifold valve and stop the operation of the
vacuum pump. Confirm that the gauge needle does not move (approximately 5 minutes
after turning off the vacuum pump).
8) Open the Main valve(Gas) about 45° counterclockwise for 6 or 7seconds after the
gas coming out, then close the valve again. Make sure the pressure display in the
pressure indicator is a little higher than the atmosphere pressure. Then remove the
charge hose from the Main valve(Gas).
9) Fully open the main valve(Gas) and main valve (Liquid) and securely tighten the cap
of the valves.
Lo Hi
Manifold Valve
Vacuum pump
Handle Lo
Handle Hi
Charge Hose
Branch valve
(Gas)
Outdoor Unit
To
indoor unit
Pressure gauge
Branch valve
(Liquid)
Öffnen
Close
Lo Hi
Manifold Valve
Vacuum pump
Handle Lo
Handle Hi
Charge Hose
Main Valve
(Gas)
Branch valve
(Gas)
Main Valve
(Liquid)
Outdoor Unit
To
indoor unit
Pressure gauge
Open
Close
Vacuum outdoor unit YCZ218 Vacuum outdoor unit YCZ327/YCZ430/YCZ542
ENGLISH
