
Service Manual
4-27
MAINTENANCE
TURN OFF all power source switches.
Tool
Adjustable Wrench
(8) Cover the hole of (L) brazing for return oil circuit using tape.
Connect a charging hose to (M) brazing for oil separator outlet. Then, charge nitrogen (22 psi (0.15
MPa)) from the upper union of (E) low pressure access port, and recover refrigerant oil in the (K) oil
separator, applying pressure.
NOTE:
In an instance where the unit has two return oil circuits and two oil separators (Example:
(H,Y)VAHP120B31S), collect the refrigerant oil from one oil separator and then from the other.
(9) Stop charging nitrogen after the refrigerant oil has completely been collected and connect the return oil
pipe. After connecting the pipe, perform the nitrogen pressurization from (E) low pressure access port.
'XULQJWKHZRUNFKHFNWKDWWKHRLOGRHVQRWVSLOORXWIURPWKHÀDUHQXWFRQQHFWLRQDQGEUD]HMRLQW
(10) Perform vacuuming from (E) low pressure access port and add the same quantity of oil that was
collected from (D) access port for recovering refrigerant oil.
NOTE:
If replacing the return oil circuit only, procedures (8) and (9) are not required.
(11) When the procedures have been completed, perform vacuuming again from (E) low pressure access
port and recharge the refrigerant. After recharging, open the stop valves.
NOTES:
1. Use a clean charging hose.
2. Charge the refrigerant oil in a short amount of time (within approximately 20 minutes).
Use a container with a small opening so that the refrigerant oil will not absorb moisture from the
atmosphere.
(K) Oil Separator
(M) Brazing for
Oil Separator Outlet
(I) Return Oil Circuit
(For Inverter Compressor)
(I) Return Oil Circuit
(Remove after cutting.)
Detail of Cutting Position
(I) Return Oil Circuit
(For Constant Speed Compressor)
(L) Brazing for Return Oil Circuit
(G) Solenoid Valve Coil
(J) Accumulator Pipe
(H) Solenoid Valve Body
Cut
(I) Return Oil Circuit
Detail of Cutting Position
Cut
(J) Accumulator Pipe
Ɣ +<9$+3%6+<9$+5%6
Содержание YVAHP072B31S
Страница 2: ......
Страница 10: ...viii Service Manual ...
Страница 16: ......
Страница 17: ...Service Manual 1 1 INSTALLATION 1 Installation ...
Страница 559: ...Service Manual 1 543 INSTALLATION 7 7RXFK DFN WR QLVK WKLV VHWWLQJ The screen returns to the Service Menu screen 7 ...
Страница 577: ...Service Manual 1 561 INSTALLATION 9 Touch Back to return to the Service Menu screen 9 ...
Страница 920: ......
Страница 921: ...Service Manual 2 1 OPERATION 2 Operation ...
Страница 983: ...Service Manual 2 63 OPERATION Clipped Ceiling Type Grille for Front Discharge 2SWLRQDO Decorative Panel 2SWLRQDO ...
Страница 1184: ...2 264 Service Manual OPERATION 7 Touch on Return to Group sel to return to Setting Group Selection 7 ...
Страница 1315: ...Service Manual 3 1 TROUBLESHOOTING 3 Troubleshooting ...
Страница 1425: ...Service Manual 3 111 TROUBLESHOOTING Surge Absorber SA Surge Absorber SA Surge Absorber SA 3RVLWLRQ RI 6XUJH EVRUEHU 9 9 1 1 1 ...
Страница 1461: ...Service Manual 4 1 MAINTENANCE 4 Maintenance ...
Страница 1657: ...Service Manual 5 1 EXTERNAL INPUT OUTPUT AND FUNCTION SETTING 5 External Input Output and Function Setting ...
Страница 1728: ......
Страница 1729: ...Service Manual 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Страница 1738: ...6 10 Service Manual FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A ft 3 l b ...
Страница 1739: ...SERVICE PARTS LIST Service Manual 7 1 7 Service Parts List ...
Страница 1795: ......
Страница 1796: ... 2015 Johnson Controls Inc SM 15001 ...