Mitsubishi City Multi P500YEM-A, Руководство по обслуживанию

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TEST RUN
[1] Before Test Run
(1) Check points before test run
1 Neither refrigerant leak nor loose power source/ transmission lines should be found.
2 Confirm that the resistance between the power source terminal block and the ground exceeds 2M
Ω
by measuring
it with a DC 500 V megger. Do not run if it is lower than 2M
Ω
.
Note: Never apply a megger to the main board as it will damage the main board.
3 Confirm that the ball valves on gas, liquid, and oil balance sides are fully open.
Note: Be sure to close the cap.
4 Be sure that the crankcase heater has been powered by turning the main power source on at least 12 hours
before starting the test run. The shorter powering time causes compressor trouble.
5 If any of the power supply wires (L1, L2, L3, N, .) are incorrectly connected, it is possible to damage the unit.
Please exercise caution.
6 A transmission booster (RP) is required when the number of connected indoor unit models in a cooling system
exceeds the number of models specified in the chart below.
Note: The maximum number of units that can be controlled is determined by the model of the indoor unit, the
type of remote controller, and their capabilities.
The number of indoor units and the total number of remote controllers is displayed in the parenthesis.
(*1) If even one unit that is higher than 200 exists in the cooling system, the maximum capacity will be “200 or
higher”.
* Please refer to the installation manual for more details.
* Before turning the power of the outdoor unit on, first turn on the transmission booster. (If the outdoor unit are mistakenly
turned on first, turn on the transmission booster, and then reset the outdoor unit power.)
(2) Caution at inverter check
Because the inverter power portion of the electrical part box in the outdoor unit have many parts with high voltage, be
sure to follow the instructions shown below to avoid the risk of electric shock.
During energizing power source, never touch inverter power portion because high voltage (approx. 580 V) is
applied to inverter power portion.
At the time of checking
Shut off the main power, and check the inverter with a tester.
Wait for 10 minutes after shutting off the main power source.
Open the main board mounting panel, and check whether the voltage at both ends of electrolytic
capacitor is 20V or less (if over wait until it is less than 20V)
200 or lower
200 or higher
Remote controller PAR-F 25MA
Prior to Ver. E After Ver. F
16 (32) 20 (40)
16 (32) 16 (32)
(*1)
Capability of the
connected indoor units
Remote controller type
Number of connected indoor units that
can be connected without a RP.
1
2
1
2
3