Start-Up - Airwell AWHM-TDF 190 Manuel D'installation, D'utilisation Et D'entretien

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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