Mitsubishi Electric 500YEMK-A, Руководство по обслуживанию

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Note: 1 If there are any units which are not operating, it will cause refrigerant to accumulate, so operate all the indoor
units. Also, in order to prevent stable operation from being disrupted by the thermostat going OFF, set the trial
operation mode.
Note: 2 If the high pressure is stabilized, it is safe to judge that the operation condition is stable.
Judge that operation is stabilized or not stabilized by whether the compressor starts after 3 or more minutes have
passed.
Note: 3 When turning on SW1 to
1 2 3 4 5 6 7 8 9 10
ON
, the LED will display the liquid level.
SW4-2 OFF : Variable Capacity Unit AL Display
SW4-2 ON : Constant Capacity Unit AL Display
Note: 4 If AL = 1 is indicates basically adjustment is not necessary, but when the liquid level is on the low side, in it the
AL = 1 region if one unit is stopped and refrigerant is accumulated in the unit it may result in there being
insufficient refrigerant, at such a time, adjustment is necessary.
Note: 5 Determine the difference in the volume of refrigerant necessary for cooling and for heating as follows. out
supplementary charging in accordance with the table below.
❇ The piping length is the total pipe length calculated for a liquid pipe with a ø 19.05 size.
Note: 6 When turning on SW 1 to
1 2 3 4 5 6 7 8 9 10
ON
, the LED will display the liquid level (AL).
SW4-2 OFF : Variable Capacity Unit AL Display
SW4-2 ON : Constant Capacity Unit AL Display
Note: 7 Middle capacity operation refers to the smallest indoor unit operation capacity attainable with the constant
capacity Unit. Unlike the outdoor unit models, operate about 70 % of the indoor units when operating the
constant capacity unit.
Pipe Length
Additional Refrigerant
Volume
60 m or less 60 ~ 90 m 90 m or longer
19 kg 24 kg 29 kg
If the liquid pipe size is ø 15.88, the actual length is 0.85
If the liquid pipe size is
ø
12.7, the actual length is 0.4
If the liquid pipe size is ø 9.52, the actual length is 0.2
If the liquid pipe size is
ø
6.35, the actual length is 0.1
Carry