24
6.
Hold a vacuum for 120 minutes while the compound meter
reads 500 microns (μmHg).
If the
meter does not indicate 500 microns after pumping for 30 minutes, continue checking the
pressure for
20 minutes more. If the pressure can’t achieve
500 microns after pumping 50 minutes,
check to see 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.
Turn the flare nut of the 3-way valves about 45° counterclockwise for 6 or 7 seconds after the gas
comes out, then retighten the flare nut. Make sure the pressure display in the pressure indicator
is 10 psi higher than the atmosphere pressure. Then remove the charge hose from the 3-way valve.
8.
Fully open the 2-way valve and 3-way valve and securely tighten the cap of the 3-way valve.
6.5 Adding Refrigerant for a Used System
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 sure the cylinder is upside-down 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.
Summary of Contents for 12H47YIMI
Page 10: ...10 1080 mm 226 mm 335 mm 30H48ZIMI 49 57 1259 mm 11 1 282 mm 14 25 362 mm 36H46ZIMI...
Page 19: ...19 Model Voltage V Capacity BTU Type 12H47ZOMI 230 12 000 HEAT PUMP...
Page 56: ...56 P W N U...
Page 57: ...57 N V N W...
Page 82: ...82 7 Then lift the PCB assembly off the unit NOTE All wires are still connected...