54
Maintenance
11. Maintenance
11.1 Prerequisites
This section is intended only for the Technical Support
Service.
Follow the safety instructions in the "About R-290 refrige-
rant" a pag. 8.
All operations must be carried out by personnel who
meet the requirements of current regulations and are
trained in the risks related to such operations.
Operate in compliance with safety regulations in force.
The maintenance allows to:
• maintaining the unit efficient
• reduce the deterioration speed all the equipment is
subject to over time
• collect information and data to understand the effi-
ciency state of the unit and prevent possible faults
Check that:
• the electrical power supply line should be isolated at
the beginning
• the unit isolator is open, locked and equipped with
the suitable warning
• make sure no tension 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.
When installing or servicing, never leave the unit unatten-
ded after removing the service panels.
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