Daikin Screw Chiller EWLH080J-SS

Warning: This procedure should only be performed by a qualified technician.

Was the unit checked for leaks by the manufacturer?

After connection of the piping, perform the following steps:

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

Do not purge the air with refrigerants. Use a vacuum pump to vacuum the installation.

Perform an integral pre-start inspection as explained in 'BEFORE STARTING'

Read the operation manual delivered with the unit

Use the 1/4” SAE Flare stop valve on the filter drier to pre-charge the unit with the complete calculated precharge

Do not operate the compressor for pre-charging, this to avoid compressor damage!

After completion of procedure step 2, perform an 'initial start' test

Start the compressor and wait for the compressor to go through the star/delta. Carefully check during start-up.

Compressor is not producing any abnormal noise or vibration

High pressure rises and low pressure drops within 10 seconds after to evaluate if the compressor is not operating in reverse due to wrong wiring

Install mainfuses, earth leak detector and mainswitch

Supply the main voltage and check if it is within the allowable ±10% limits of the nameplate rating

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

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