Test Run; Preparing For Test Run - Panasonic S-160PE1R5B Technical Data & Service Manual

2-1. Preparing for Test Run

Before attempting to start the air conditioner, check the following:
(1) All loose matter is removed from the cabinet especially
steel filings, bits of wire, and clips.
(2) The control wiring is correctly connected and all
electrical connections are tight.
(3) The protective spacers for the compressor used for
2
transportation have been removed.
If not, remove them now.
(4) The transportation pads for the indoor fan have been
removed. If not, remove them now.
(5) The power has been supplied to the unit for at least 12
hours before starting the compressor. The bottom of
the compressor should be warm to the touch and the
crankcase heater around the feet of the compressor
should be hot to the touch. (Fig. 2-1)
(6) Both the gas and liquid tube service valves are open.
If not, open them now. (Fig. 2-2)
(7) Request that the customer be present for the test run. Explain the contents of the instruction manual, and then
have the customer actually operate the system.
(8) Be sure to give the instruction manual and warranty certificate to the customer.
(9) When replacing the control PCB, be sure to make all the same settings on the new PCB as were in use before
replacement. The existing EEPROM is not changed, and is connected to the new control PCB.
Check Before Test Run
Power supply cable
Indoor/outdoor connection wire
Earth wire
Refrigerant tube
Always be sure to use a properly insulated tool to operate the short-circuit pin on the circuit board. (Do not use your finger.)
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.
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.
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 1MΩ.
Use the 500 V mega-testers to measure the insulation.
Do not use the mega-tester for any other circuit except for voltage of 230-240V~ or
400-415V 3N~.
Are the wire connections for the indoor/outdoor units connected as described in the
instructions? Are there any looped wires?
Was the "N-phase" surely connected when connecting the power supply wire on the
three-phase model?
If N-phase is not connected, only the fan may repeat turning ON/OFF without the
compressor operating. In that case, check if there is any problem with N-phase connection.
Is the tubing installed as described in the instructions?
Are the tubes sizes appropriate?
Does the tube's length adhere to the specifications?
Is the branch tube 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 tubing insulation material appropriately installed? (Insulation material is necessary
for both gas and liquid tubing.)
Is the 3-way valve for the liquid tube and gas tube open?
2-2
ON
(Power must be turned ON
at least 12 hours before
attempting test run)
Power mains switch
Liquid tube
Content check
Fig. 2-1
Gas tube
Fig. 2-2