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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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