29
• Electric checks
- Check the state of the electric wires and
their insulants.
- Check functioning of the compressor
sump
• Mechanical checks
- Check tightness of the compressor
screws and of the electric box and the
unit's external panelling. Bad fixing is the
origin of anomalous noise and vibrations.
- Check the state of the structure.
If necessary, treat oxidised parts with
paints suitable to eliminate or reduce the
phenomenon of oxidisation.
• Hydraulic checks
- Clean the water filter
- Check the flow meter
- Make air escape from the circuit
- Check the water flow rate is always
constant to the evaporator
- Check the state of the heat insulation of
the hydraulic pipes.
- Where present, check the percentage of
glycol.
8 DISPOSAL
8.1 Disconnection of the unit
The unit must be disconnected by a
qualified technician.
If present, the following must be
recovered:
• The refrigerant gas: the extraction
of the gas must be performed using
closed circuit suction devices in a
way to ensure no gas leaks into the
environment.
• The glycol must not be dispersed
into the environment when removed
but stored in relevant containers.
NOTE
The disposal of any refigerant gas,
any glycoled water and the recovery
of any other material or substance
must be carried out by qualified staff
and in respect with laws in force on
this subject, in order to prevent injury
to persons and damage to objects
and pollution of the surrounding
area.
While awaiting disposal, the unit can
be stored in the open as bad weather
and sudden changes in temperature
do not cause damaging effects for
the environment, because the unit has
electric, cooling and hydraulic circuits
that are integral and closed.
7.2 Dismantling and disposal
In the dismantling phase, the fan, the
engine and the battery, if functioning,
can be recovered by specialised
centres for eventual re-use.
NOTE
For dismantling/disposal, all
materials must always be consigned
to centres that are authorised and in
compliance with national regulations
in force on this subject. Contact the
Head Offices for further information.
9 IMPROPER USE
The appliance is designed and built
to guarantee maximum safety in it's
immediate vicinity (IP21),as well as to
resist atmospheric agents.
The fans are protected from involuntary
intrusions by means of protective
grids.
The accidental opening of the electric
control board with machine functioning
is prevented by the door-block isolating
switch.
Do not place heavy tools or objects
directly on the side heat exchange
batteries, so as not to ruin the fins.
9.1 IMPORTANT SAFETY
INFORMATION
The machine must not exceed the
temperature and pressure limits
indicated in the table stated in the
“Functioning Limits” paragraph in the
technical manual.
Correct functioning is not guaranteed
following a fire; before re-starting the
machine, contact an authorised after-
sales centre.
The machine has safety valves, which
in the case of excessive pressure, can
discharge gases at high temperatures
into the atmosphere.
Wind, earthquakes and other high
intensity natural phenomena have not
been considered.
If the unit is employed in an aggresive
atmospheres or using
aggresive water
consult the Head Offices.
ATTENTION
Following extraordinary maintenance
interventions on the cooling circuit with
replacement of components, before
re-starting the machine, carry out the
following interventions:
- Pay maximum attention when
restoring the load of refrigerant
indicated on the machine plate and
in this manual on page 20
- Open all taps present in the cooling
circuit.
- Correctly connect the electric power
supply and the earth connection.
- Check the hydraulic connections
- Check that the water pump functions
correctly
- Clean the water filters
-
Check that the condenser batteries
are not dirty and blocked
- Check the correct rotation of the fan
units.
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