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9 - START-UP
9.1 PRELIMINARY INFORMATION
If the unit has been tipped during transport, wait at least 2
hours before starting it up
General
The indicated operations should be done by qualified
technician with specific training on the product.
The service centres shall perform by request the start-up;
the electrical, hydraulic connections and the remaining
work on the system are provided by the installer.
Agree upon the start-up date with the service centre
sufficiently in advance .
Before checking, please verify that :
the unit should be installed properly and in conformity with
this manual.
the electrical power supply line should be sectioned at the
beginning.
the line sectioning device is open, locked and equipped
with the suitable warning signs.
ensure no voltage is present .
After turning off the power, wait at least 5 minutes before
accessing to the electrical panel or any other electrical
component.
Before accessing check with a multimeter that there
are no residual stresses.
Refrigerant circuit
Visually check the refrigerating circuit: the presence of oil
stains can mean leakage (caused, for example, by
transport, handling or other).
Use the pressure taps only if you need to load or unload
the refrigerant circuit.
Hydraulic circuit
Before realizing the unit connection make sure that the
hydraulic system has been cleaned up and the clearing
water has been drained .
Check that the water circuit has been charged and
pressurised .
Check that the cut-off valves on the circuit are in the
"OPEN" position.
Check that no air is present in the circuit, if required,
evacuate using the air bleeding valve placed at the
system's high points.
Aeraulic system
Verify that:
the rooms are clean (free from dirt)
ducting are completed, connected and without obstructions
Electrical circuit
Verify that the unit is connected to the ground plant .
Check tightening of the conductors: the vibrations caused
by handling and transport might cause loosing .
Feed the unit by closing the sectioning device, but leave it
on OFF
Check the voltage and frequency net values which must
be within the limits:
220-240Vac
Check that the phases unbalancing must be lower than 2%
The operating out of the limits can cause malfunctions
damages and makes decay the warranty.
Verify tensions - Absorbitions
Check that the air and water temperatures are within the oper-
ating limits.
With unit at steady state, i.e. in stable and close-to-work con-
ditions, check:
supply voltage
unit total absorption
absorption of each electric load..
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