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2
2
2-22
Pump down cannot be performed when the tubing length exceeds 30m.
(There is a possiblilty of generating the actuation of the excessive load protection system.)
In this case, collect the refrigerant by the refrigeant collecting system.
NOTE
2-22. Caution for Pump Down
Pump down means refrigerant gas in the system is returned to the outdoor unit.
Pump down is used when the unit is to be moved, or before servicing the refrigerant circuit.
This outdoor unit cannot collect more than the rated refrigerant amount as
shown by the nameplate on the back.
If the amount of refrigerant is more than that recommended, do not conduct
a pump down. In this case use another refrigerant collecting system.
CAUTION
CAUTION
Caution on Pump Down (Refrigerant Recovery)
(1)
(2)
(3)
Stop the unit operetion (cooling heating wind direction, etc.).
Connect the manifold gauge to the service port of the gas tube service valve.
Short-circuit the PUMP pin on the outdoor unit control PCB for over 1 second.
Refrigerant recovery will start and the unit starts driving.
During the refrigerant recovery. LED1 blinks and LED2
lights up on the outdoor unit control PCB.
Remote control display shows
blinks.
(4) Fully close the liquid tube service valve after 2 or 3 minutes.
Pump down will start.
(5) When the manifold gauge reduces to 0.2 - 0.1MPa. fully
close the gas tube service valve.
Then again short-circuit the PUMP pin (CN048).
Refrigerant recovery is finished.
If operation is continued for over 10 minutes, the unit
stops even if the refrigerant recovery is not completed.
Check the liquid tube service valve closed.
When the PUMP pin (CN048) is shorted again during
refrigerant recovery the unit stops.
* For protection of the compressor do not drive until the
unit tubing side becomes negative pressure.
PUMP pin (CN048) is located
on the outdoor PCB as shown.
Pay much attention to the fan of the Outdoor unit as there is danger of injury during
operation.
SM830194-04_Single_BigPAC.indb 22
2014/11/04 13:45:16
Содержание S-200PE1E8
Страница 88: ...1 82 MEMO ...
Страница 112: ...3 2 3 3 1 Outdoor Units Electric Wiring Diagram U 200PE1E8 U 250PE1E8 ...
Страница 113: ...3 3 3 Schematic Diagram U 200PE1E8 U 250PE1E8 ...
Страница 114: ...3 4 3 3 2 Indoor Units High Static Pressure Ducted Type S 200PE2E5 S 250PE2E5 Electric Wiring Diagram ...
Страница 115: ...3 5 3 3 2 Indoor Units High Static Pressure Ducted Type S 200PE1E8A Electric Wiring Diagram ...
Страница 116: ...3 6 3 3 2 Indoor Units High Static Pressure Ducted Type S 200PE1E8A Schematic Diagram ...
Страница 117: ...3 7 3 3 2 Indoor Units High Static Pressure Ducted Type S 200PE1E8 Electric Wiring Diagram ...
Страница 118: ...3 8 3 3 2 Indoor Units High Static Pressure Ducted Type S 200PE1E8 Schematic Diagram ...
Страница 119: ...3 9 3 3 2 Indoor Units High Static Pressure Ducted Type S 250PE1E8 Electric Wiring Diagram ...
Страница 120: ...3 10 3 3 2 Indoor Units High Static Pressure Ducted Type S 250PE1E8 Schematic Diagram ...
Страница 129: ...4 9 4 4 3 Outdoor Unit Filter PCB FIL C906VH8 ...
Страница 130: ...4 10 4 4 4 Outdoor Unit HIC Board HIC C906VH8 ...
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