Mitsubishi Electric PUHY-RP200YJM-A Manual De Instrucciones página 6

6Refrigerant oil recovery operation
Procedure 6
Set the dipswitches 3-1 and 4-8 to ON in that order. The compressor turns on, and oil recovery operation starts.
* When multiple outdoor units are connected in a system, refer to the followings for which dipswitch should be operated.
• When different capacity outdoor units are combined, operate the dipswitch on the larger capacity unit.
• When the same capacity outdoor units are combined, operate the dipswitch on the unit whose address is smaller.
Check the operation mode (cooling or heating) during the refrigerant oil recovery operation.
* Before the refrigerant oil recovery operation is started, the operation mode (cooling or heating) is automatically selected. When outside temper-
ature is 20°C or above, cooling mode is selected. When outside temperature is lower than 15°C, heating mode is selected. When outside tem-
perature is between 15°C and 20°C, operation mode varies depending on the indoor temperature. When indoor temperature is 23°C or below,
heating mode is selected. When indoor temperature is 23°C or above, cooling mode is selected.
* Turn the dipswitches 1-1, 1-2, 1-3, and 1-6 to ON to check the operation mode on the outdoor unit LED as follows. (The operation mode can
also be checked on the display of local remote controller or maintenance tool.)
When cooling mode is selected
Procedure 7
The refrigerant oil recovery operation is explained in the next page. Wait for the operation to be automatically completed.
* If there was excess refrigerant that had not been charged at "2Refrigerant charging", charge it during oil recovery operation at step 4 (cooling
operation) or step 5 (heating operation). After charging the refrigerant, close the valve on the refrigerant cylinder. (Even when the required
amount of refrigerant is already charged, refrigerant charge is automatically adjusted.)
* If the cylinder runs out of refrigerant during the refrigerant oil recovery operation, continue the operation and replace the cylinder.
* If the cumulative oil recovery operation hour is more than three and a half hours, turn the dipswitches 4-8 and 3-1 to OFF to stop the operation
and turn the dipswitches 4-7 on all the units (OC, OS1, and OS2) to OFF.
The refrigerant oil recovery operation is explained in the following flow charts.
Wait for the operation to be automatically completed.
* Refer to the table at right for the maximum amount of refrigerant charge.
Do not exceed the maximum amount.
If the refrigerant oil recovery operation does not finish after the maximum
amount of refrigerant is charged, close the valve on refrigerant cylinder, and wait
for the operation to be completed automatically.
* If the cylinder runs out of refrigerant during the refrigerant oil recovery operation,
continue the operation and replace the cylinder.
If the length or diameter of the refrigerant pipe is known, take the following procedure.
If more than the amount of refrigerant that you calculated is charged into the system in auto-charge mode, then there is no problem if you wish to
close the cylinder valve while the unit is operating. The unit will stop operating of its own accord.
When heating mode is selected
Address switches
SW5
Close the panel at
SW4
bottom front of the
unit.
OFF ON
SW3-1
SW3
6
LED monitor
Dipswitches
SW3 SW1
SW2
Each dipswitch has 1 to 10 switches from
1
2
the top. (OFF-left, ON-right)
3
4
(e.g., SW3-1 is the top switch of SW3.
5
6
The figure at left indicates that only SW3-1
7
8
9
is set to ON.)
10
Outdoor unit capacity and the maximum
amount of refrigerant charge
Outdoor unit
charge (except for the indoor units)
capacity
RP200
RP250
RP300 - RP900
Maximum amount of refrigerant
(kg)
18.0
18.0
25.0