The exchangers must be cleaned with the machine off and by
personnel authorised and trained for this type of operation.
The exchangers must be cleaned by using the specific pressure
sockets and with specific detergents. At the end of the cleaning
operation the exchangers must be appropriately rinsed to prevent
detergent from circulating in the system.
At the end of the operation the water system must be reloaded and
vented before restarting.
Open the shut-off devices of the system.
Start filling by slowly opening the system water fill-up valve outside
the unit.
When water begins to leak from the air vents, close them and
continue filling until the expected system pressure value is reached.
Verify the hydraulic tightness of the joints.
It is advisable to repeat this operation after the unit has been
operating for a few hours and regularly check the system
pressure. Top-ups must be carried out with the machine off
(pump OFF).
8.6 Refrigerant circuit
8.6.1
Cooling circuit repair
These operations should be carried out only by qualified
personnel, using standard techniques typical of cooling systems
that use halogen fluids such as refrigerants.
8.6.2
Refrigerant top up
They should be carried out only after having identified and repaired
the leaking points.
The system must be filled to a pressure range between 1 and 2
bar.
No more than two top ups are permitted. If an additional top-up
is required, the cooling circuit must be emptied completely and
filled with virgin refrigerant.
8.5.2
Draining of the water circuit
Before starting to load, set the main switch of the system to "off".
Open the rear inspection panel of the unit.
Check that the unit and system drain valves are closed.
Open all vent valves of the unit, of the system and of the related
terminals.
8.7
Decommissioning and disposing
This product falls within the field of application of Directive
2012/19/EU on the management of waste electric and electronic
equipment (WEEE).
Before starting to load, set the main switch of the system to "off".
Before starting to empty, set the main switch of the system to ''off''.
Open the rear inspection panel of the unit.
Verify that the system water load/top-up valve is closed.
If the system is supplemented with anti-freeze liquid, this should
not be drained freely because of pollution. It must be collected
and possibly reused.
8.5.3
Exchanger cleaning
The material not trapped by the filters, the water hardness or the high
concentration of low freezing point solutions may dirty the water
exchangers, reducing the efficiency of the heat exchange.
By using a differential pressure gauge it is possible to check the
pressure loss between exchanger inlet and outlet.
If, from an inspection, it is found that the pressure values compromise
regular operation or reduce machine efficiency, cleaning the
exchanger will be required.
These types of products may contain substances that are
potentially harmful to human health and the environment and
cannot be disposed of as household waste.
When the machine needs to be replaced or dismantled it must be
disposed of according to local regulations on sorted waste,
otherwise you must contact your local dealer for information on free
pick-up.
To Next Page
Loading...
