85
2. Air Purging Using Refrigerant
Procedure:
1). Confirm that both the 2-way and 3-way
valves are set to the closed position.
2). Connect the charge set and a charging
cylinder to the service port on the 3-way valve.
3). Air purging:
Open the valves on the charging cylinder and
the charge set. Loosen the flare nut on the
2-way valve approximately 45° for 3 seconds
then closing it for 1 minute. Repeat 3 times.
After purging the air, use a torque wrench to
tighten the flare nut on the 2-way valve.
4). Check for gas leaks.
Check the flare connections for gas leaks.
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 displays a value between 0.3 to 0.5
Mpa(43.5 to 72.5Psi)
6). Disconnect the charge set and the charging
cylinder. Set the 2-way and 3-way valves to the
open position.
Be sure to use a hexagonal wrench to open and
close 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 of 18N·m.
Be sure to check for gas leaks.
12.4.4 Adding Refrigerant after Long-Term
System Operation
Procedure
1). Connect the charge hose to the 3-way
service port and open the 2-way and 3-way
valve.
Connect the charge hose to the valve at the
bottom of the cylinder. If the refrigerant is
R410A, place 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) Place the charging cylinder onto the
electronic scale and record the weight.
4) Turn on the air conditioner in 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 gauge and the
pressure of the low side), disconnect the charge
hose from the 3-
way valve’s service port
immediately and turn off the air conditioner
before disconnecting the hose.
7). Mount the valve stem caps and the service
port.
Use torque wrench to tighten the service port
cap to a torque of 18N.m.
Be sure to check for gas leaks.
12.4.5 Re-installation When Indoor Unit
Requires Repairs
1. Collecting the Refrigerant into the
Outdoor Unit
Содержание CCA3U-09HRFN1-MC
Страница 8: ...5 2 2 Part names of Indoor Outdoor units Cassette Units ...
Страница 9: ...6 A5 Duct Units A6 Duct Units ...
Страница 10: ...7 Console Units ...
Страница 11: ...8 Ceiling floor Units ...
Страница 12: ...9 HESP DUCT Units ...
Страница 31: ...28 Console Units 16 Drain pipe 195 Hanging arm Unit mm 700 600 210 ...
Страница 38: ...35 Console Units Ceiling floor Units ...
Страница 43: ...40 CFAU 09HRFN1 M C CFAU 12HRFN1 M C MCD 36HRFN1 M C MCD 48HRFN1 M D ...
Страница 44: ...41 CTBU 36HWFN1 M C CTBU 48HWFN1 M C ...
Страница 45: ...42 MUEU 18HRFN1 M C MUEU 24HRFN1 M C MUE 36HRFN1 M C ...
Страница 46: ...43 MUE 48HRFN1 M C MUE 60HRFN1 MW ...
Страница 47: ...44 MUE 36HRFN1 M C MUE 48HRFN1 M C ...
Страница 48: ...45 MUE 60HRFN1 MW MTI 18HWFN1 MT0W MTIU 24HWFN1 MW ...
Страница 49: ...46 MTIU 36HWFN1 MW MTIU 48HWFN1 MW MHG 60HWFN1 MW ...
Страница 51: ...48 MOBA30 09HFN1 MT0W MOB30 12HFN1 MT0W ...
Страница 52: ...49 MOD30 24HFN1 MT0W MOD01 23HFN1 MT0W ...
Страница 53: ...50 MOD30U 36HFN1 M ...
Страница 59: ...56 CTBU 09HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 60: ...57 CTBU 12HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 61: ...58 CTBU 18HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 62: ...59 CTBU 24HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 63: ...60 CTB 36HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 64: ...61 CTB 48HWFN1 M C Code 0 Code 1 Code 2 Code 3 Code 4 ...
Страница 74: ...71 12 Field Wiring 36K 48K 60K ...
Страница 123: ...120 P U P V ...
Страница 124: ...121 P W P N ...
Страница 141: ...138 ...
Страница 151: ...148 4 Remove the evaporator support board 5 Screw off the fixing screws to remove the evaporator 4 screws 1 screw ...
Страница 187: ...184 5 Remove the four fixing screws of the fan motor then remove the motor 5 ...
Страница 200: ...197 6 Remove the grounding screw 7 Remove the Wires 1 2 3 or L1 L2 S Then remove the electronic control box 7 ...