Daikin Screw Chiller EWLH090J-SS

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)

Check the oil level in the compressors

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

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. Check for abnormal noise or vibration.

Check that high pressure rises and low pressure drops within 10 seconds.

Check that no safeties are activated.

Stop the compressor after 10 seconds.

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

Manufacturer's leak check passed?

After connection of the piping, perform the following steps:

Air in the refrigerant piping evacuated to a value (in mbars)

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