Panasonic S-22KA1E5S, Руководство по обслуживанию

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Check Before Test Run
Content check
Power supply cable
Indoor/outdoor connection wire
Earth wire
● Is the wire set up and connected as described in the instructions? Check for any phase
sequence.
● Are the wire connection’s screws loose?
● Is the open and close device / leakage breaker installed?
● Is the power supply cable’s thickness and length appropriately measured as described in the
instructions?
● Is it earthed (grounded)?
● Check that the insulation resistant value is more than 1 M Ω .
Use the 500 V mega-testers to measure the insulation.
Do not use the mega-testers for any other circuit except for voltage of 220 V to 240 V.
● Are the wire connections for the indoor/outdoor units connected as described in the instructions?
Are there any looped wires?
Refrigerant pipe
● Is the piping installed as described in the instructions?
● Are the pipes sizes appropriate?
● Does the pipe’s length adhere to the specifications?
● Is the branch pipe slant being appropriately done as described in the instructions?
● Was vacuum removal sufficiently carried out?
● Was the leak tightness test carried out with nitrogen gas? Use the testing pressure of 4.15 MPa.
● Is the piping insulation material appropriately installed? Insulation material is necessary for both
gas and liquid piping.
● Is the 3-way valve for the liquid side and gas side open?
Filling additional refrigerant ● This product is charge-free. No additional refrigerant is necessary.
Other
● Does the indoor unit’s connection capacity fall within the range of 50 to 130%?
● Check that the refrigerant piping and the related wiring is connected to the same refrigerant
system.
•
Always be sure to use properly insulated tool to operate the switch on the circuit board. (Do not use your finger
or a metallic object)
•
Never switch the power supply ON until the installation has completed.
•
Supply electrical current through all indoor units and check the voltage.
•
Supply electrical current through all the outdoor units and check each inter-phase voltage.
•
Switch the power supply ON at least 12 hours before the test run.
•
Removing a connector while the current is running can cause damage to the control board. Once the power
supply is turned OFF, be sure to wait 5 minutes or more before starting to work on it.
•
Follow the indoor and outdoor units’ instructions.
•
Before the test run, ensure to check that the 3-way valve is open. Operating while the valve is closed causes
the compressor to fail.
•
Ensure to connect the refrigerant piping and the related wiring to the same refrigerant system.
•
If the refrigerant piping and the related wiring are different and not connected to the same refrigerant system, it
leads to abnormal operation and causes damage to the unit.
Test Run Procedure
•
Ensure to conduct a test run. In addition, be sure to run the cooling operation test run for at least 20 minutes
before starting the heating operation test run.
•
If you cannot be near the outdoor unit during test run, request for another person to replace you or install a
frontal panel.
•
Once the cooling test run is functioning properly, check that the outflow from the indoor unit is cool.
•
Once the heating test run is functioning properly, check that the outflow from the indoor unit is warm.
•
If the indoor unit has a wired remote control attached, check that the temperature values displayed during test
run for the heat exchanger are as follows.
(The heat exchanger temperature is displayed on the wired remote control timer display screen.)
The heat exchanger temperature during the cooling test run is 6 to 20°C and during the heating test run it is 25
to 55°C.
If the connected indoor unit’s capacity exceeds 100% or if the pipe length is long, the heat exchanger
temperature during cooling test run will be high and low during heating test run.
•
If the units do not operate during test run, perform the malfunctioning diagnostics to countermeasure any
problems. Resume the test run.
■ Performing test run of the outdoor unit
•
Press the TEST RUN button on the outdoor unit’s control board for more than 1 second.
•
If you want to cancel after performing the test run, press the TEST RUN button again for more than 1 second.
•
Perform test run for each outdoor unit and check that all indoor units connected by the refrigerant piping are
also performing the test run. Ensure that the refrigerant piping system and the electrical wiring system are the
same.