—
52
—
Using Vacuum Pump
1. Connect the flexible charge tube of the manifold valve with the charge mouth of the low pressure valve (both the high
and low pressure valves must be closed).
2. Connect the flexible charge tube with the vacuum pump.
3. Put the low pressure (Lo) handle of the manifold valve to the complete open position.
4. Start the vacuum pump to operate vacuum pumping. Now open the connecting pipe nut of the low pressure valve
slightly to check if air is entering.
5. After the vacuum pumping is completed, put the low pressure (Lo) handle of the manifold valve to the complete close
position to stop the vacuum pump (after operating vacuum pumping for above 15 minutes, confirm if the reading of
multi-use meter is -10
×
105pa (-76cmHg)).
6. Completely open the high and low pressure valves.
7. Disconnect the flexible charge tube from the charge mouth of
the low pressure valve.
8. Tighten the low pressure valve cap (refer to Figure 10).
③
Electrical Cable Layout
1. Before connections, refer to the part voltages specified on the nameplate, and then carry out line connections
according to the electrical diagram attached on the unit. Do not connect high voltage cables with low voltage cables.
2. The air-conditioning unit must have special voltage cable and must be equipped with power leakage switch and air
switch so as to deal with the occurrence of overload.
3. The air-conditioning unit must be grounded to avoid harm as a result of insulation failure.
4. All lines must be correctly connected according to the electrical diagrams attached to the unit. Wrong connections
may cause abnormal operation or damage of the air-conditioning unit.
Caution
;
All electrical line layouts must be carried out by professional technicians. Wrong line layout may cause electric shock or
fire accident.
④
Connection of Power Cables
1. Remove the front side plate (Figure 11).
2. Drill through the cable-cross hole at the outdoor unit and attach the cable-cross loop.
3. Pull all cables through the cable-cross loop hole.
4. Carry out line connections according to the electrical diagram for the outdoor unit side. Ensure the connections are
secure.
5. Use wire-pressed clamps to press and secure the cables.
Caution :
1. There must be reliable grounding.
2. The connections must be reliable.
3. The connection points shall not subject to tension.
4. Other cables must have reliable connections with their corresponding terminals.
5. For single phase, connect the two 3-core rubber covered cables to the corresponding terminals.
6. Cooling Only Type : (3-Phase)
Connect the 3-core rubber covered cable to the L, N1 terminals of the 8-bit terminal board. Connect the 5-core rubber
covered cable to the L1, L2, L3 and N terminals of the 8-bit terminal board.
Heating and Cooling Type : (3-Phase)
Connect the 5-core rubber covered cable to the 5-bit terminal board
Manifold Valve
Multi-Use Meter
-76cmHg
Lo Handle
Flexible Charge Tube
Pressure Gauge
Hi Handle
Flexible Charge Tube
Vacuum Valve
Low Pressure Valve
(Figure 10)
Содержание AIR C18
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Страница 14: ... 11 Applicable to GE AIR C24 OUT Unit mm Over 600 Bolt Nut Wrench ...
Страница 15: ... 12 Applicable to GE AIR C34 C41 OUT 378 Unit mm Over 600 Bolt Nut Wrench ...
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