Daikin Screw Chiller EWWH120J-SS

The units were checked for leaks by the manufacturer.

After connection of the piping, was a leak test performed?

Enter the value of air evacuated in the refrigerant piping (in mbars absolute)

Was the air purged with refrigerants?

Do not purge the air with refrigerants.

Was a vacuum pump used to vacuum the installation?

Sign off on the Screw Chiller Testing

Install mainfuses, earth leak detector and mainswitch. Recommended fuses: aM according to IEC standard 269-2. Refer to the wiring diagram for size.

Supply the main voltage and check if it is within the allowable ±10% limits of the nameplate rating. The electrical main power supply should be arranged so, that it can be switched on or off independently of the electrical supply to other items of the plant and equipment in general. Refer to the wiring diagram, terminals L1, L2 and L3.

Supply water to the evaporator and verify if waterflow is within the limits as given in the table under “Water charge, flow and quality”.

The pipng must be completely purged. See also chapter “Preparing, checking and connecting the water circuit”.

Connect the pump contact(s) in series with the contact of the flowswitch(es), so that the unit can only come in operation when the waterpumps are running and the water flow is sufficient.

Check the oil level in the compressors.

Install the filter kit(s) supplied with the unit in front of the evaporator(s) water inlet.