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49
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'09•KX-T-139
(1) Guideline of accuracy
8-3. Refrigerant quantity check
Refrigerant quantity check tells you whether the refrigerant quantity is excessive (over) or insufficient (low).
(Even if the check operation is not practiced, the test run and normal operation can be performed.)
For further details regarding the check operation refer to the technical data.
It must be noted that, during the check operation, the outdoor units and the indoor units are operated automatically.
Guidelines of judgment on the refrigerant quantity are as shown below.
It should be noted that the result of judgment could vary depending on the conditions of judgment.
(2) Confirmation before implementing the refrigerant quantity check
Confirm on all of the followings before starting the refrigerant quantity check.
・
Confirm that it has been completed all works up to “8-1 Before starting operation”.
・
Check operation cannot be done when the total capacity of connected indoor units is less than 80% of the outdoor unit capacity.
・
Check operation cannot be done when the system communication method is that of previous SL.
・
Check operation cannot be done when the system is stopped by an error.
・
Practice the check operation within applicable operation temperature range (Outdoor temperature: 10 - 43˚C, room temperature: 15 - 32˚C). Check operation
will not start out of these ranges.
・
Start the check operation only at 5 minutes after stopping all indoor units.
(3) Method of refrigerant quantity check operation
(a) Starting the refrigerant quantity check operation
・
Confirm that all of the following switches are turned OFF; SW3-2 (Auto backup operation), SW3-6 (Pipe wash mode), SW3-7 (Forced cooling/heating mode),
SW5-1 (Test run), SW5-2 (Test run cooling setting), SW5-3 (Pump-down operation) and SW5-6, 7, 8 (Capacity measurement mode). (In case of combination,
on both master/slave units)
・
At the next, turn the SW3-4 (Refrigerant quantity check operation) OFF
→
ON (only on master unit in case of combination) so that the check operation will start.
・
It takes 60 ~ 75 minutes normally from the start to the end of check operation.
(
b
) End of refrigerant quantity check operation and result display
・
When the check operation is over, the system stops automatically, and the result is displayed on the 7-segment indicator. (Only on master unit in case of
combination)
< Normal ending >
・
7-segment indicator shows “Co End”.
・
Return the SW3-4 to OFF. 7-segment indicator returns to normal display.
・
Return SW3-7 (Forced cooling/heating mode) to ON.
< Abnormal ending >
・
7-segment indicator shows an error alarm.
・
Repair the faulty section referring to the guidance, and return the SW3-4 to OFF.
・
At the next, repeat the check operation from the Step (2) above.
・
Practice the refrigerant quantity check operation only after charging the measured quantity of additional
refrigerant.
・
It is necessary to add or reduce the refrigerant depending on the result of refrigerant quantity check. Even when
it has been judged that proper quantity of refrigerant is retained, the result could become inadequate if the
operating conditions are changed.
・
It should be noted, therefore, that a result under particular conditions cannot cover all operating conditions.
Important
Refrigerant quantity over
+10 kg (Single machine)
+20 kg (Combination machine)
Low refrigerant quantity
20% of the additional refrigerant quantity for piping (P)
Summary of Contents for FDCH1010CKXE6G
Page 8: ... 09 KX T 139 2 2 Exterior dimensions Models FDCH335CKXE6G K 400CKXE6G 450CKXE6G PCB003Z141 ...
Page 9: ... 09 KX T 139 Models FDCH504CKXE6G 560CKXE6G 560CKXE6G K 615CKXE6G 680CKXE6G PCB003Z142 ...
Page 10: ... 09 KX T 139 2 3 Electrical wiring Models All model PCB003Z139 ...
Page 41: ......
Page 42: ... 40 09 KX T 139 ...
Page 63: ... 09 KX T 139 Combination use PCB003Z587 61 ...
Page 64: ... 09 KX T 139 2 2 Exterior dimensions Models FDCH335CKXE6G K 400CKXE6G 450CKXE6G PCB003Z589 62 ...
Page 65: ... 09 KX T 139 Models FDCH504CKXE6G 560CKXE6G 560CKXE6G K 615CKXE6G 680CKXE6G PCB003Z590 63 ...
Page 66: ... 09 KX T 139 2 3 Electrical wiring Models All model PCB003Z588 64 ...
