CLIVET WDAT-iZ4, Manual For Installation, Use And Maintenance

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6 START-UP
Cooling circuit
1 Visually inspect the refrigerating circuit: the presence of oil
stains can by a symptom of leakage (caused e.g. by
transportation, handling or other).
2 Verify that the refrigerating circuit is in pressure: Using the
unit manometers, if present, or service manometers.
3 Make sure that all the service outlets are closed with proper
caps; if caps are not present a leak of refrigerant can be
possible.
4 Open all of the refrigeration circuit shut-off valves (if
applicable).
Hydraulic circuit
1 Before connecting the unit to the hydraulic system, make sure
that the hydraulic system has been washed and that the
water has been drained
2 Check that the hydraulic circuit has been filled and
pressurized-
3 Check that the shut-off valves in the circuit are in the “OPEN”
position.
4 Check that there is no air inside the circuit, and bleed it
through the vent valves in the high points of the system if
necessary.
5 When using antifreeze solutions, make sure the glycol
percentage is suitable for the type of use envisaged.
NOTE
Ÿ
Neglecting the washing will lead to several filter cleaning
interventions and at worst cases can cause damages to the
exchangers and the other parts.
Electric circuit
Check the unit is connected to the earthing system.
Check the conductors are tightened as: the vibrations caused by
handling and transport might cause these to come loose.
Power the unit by closing the isolation device but leave in OFF.
Check the network frequency and voltage values, which must be
within the limits: 380-415V 3N~ 50Hz +/-6%
Check and adjust the phase balance as necessary: it must be
lower than 2%
Example:
400 - 6% = 376
400 + 6% = 424
NOTE
Ÿ Working outside of these limits can cause irreversible damages
and voids the warranty.
Weight of glycol (%) 10 20 30
Freezing temperature (°C) -3.9 -8.9 -15.6
Safety temperature +1 -4 -10