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5
Test Run
Checklist Before Test Run
After the installation of the unit, check the items listed below first.
CAUTION
Do not power on the system.
Pass/Fail
Check list
Read the complete installation and operation manual.
Installation
Check that the units are properly installed, to avoid abnormal noises and vibrations when starting up the units.
Compressor and others shipping brackets removed.
‘The Piping Length’ and ‘Additional Refrigerant Charge’ are calculated and recorded on the table of the unit.
Be sure that the stop valves are open on both liquid and gas side.
All Controllers installed and all control wiring is installed and properly connected at each terminal block.
All drain piping is connected, including indoor units tie-in, and insulated as required.
Refrigerant lines are completely insulated including flare nut connections at Indoor Units.
All ductwork is connected and air filters installed.
Air inlet/outlet
Check that the air inlet and outlet of the unit is not obstructed by paper sheets, cardboard, or any other material.
Field wiring
Be sure that the field wiring has been carried out according to the instructions described in the manual and
according to the applicable legislation.
Earth wiring
Be sure that the earth wires have been connected properly and that the earth terminals are tightened.
Insulation test of the main power circuit
Using a megatester for 500 V, check that the insulation resistance of 2 MΩ or more is attained by applying
a voltage of 500 V DC between power terminals and earth.
NEVER use the megatester for the communication wiring.
Fuses, circuit breakers, or protection devices
Check that the fuses, circuit breakers, or the locally installed protection devices are of the specified size
and type.
Do not bypass a fuse and a protection device.
Internal wiring
Visually check the electrical component box and the inside of the unit for loose connections or damaged
electrical components.
Components damage
Check for damaged components and extruded piping inside the unit.
Consistency Check between Refrigeration Pipelines and Communication Lines
Check and confirm that the refrigerant piping and communication lines connected to the indoor and
outdoor units are belong to the same refrigeration system.
