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(*) No writing appears on the display.
(**) For network alarms, we intend the alarm control propagated by the master to all network devices, on planning, in case of
activation of the alarm relay on the master.
During functioning, in particular conditions, the signals reported in Table 9 are displayed.
Code
Description
displayed
OFF
unit in stand-by (operation disabled)
dF
defrosting in progress
dFu
defrosting not performed
uM
master unit
uSx
slave x unit
Cn
terminal/control connection interrupted
ATTENTION:
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6.1. General Maintenance Information
To guarantee maximum reliability to the machine and avoid dangerous conditions, scrupulously comply with the instructions and
warnings reported in the following pages.
DANGER:
WARNING:
Before conducting any type of maintenance or cleaning intervention reported in this paragraph, it is necessary to section the
machine from the electrical power supply; do so by removing the plug from the power socket.
DANGER:
6.1.1 Safety Signs
To conduct correct maintenance and cleaning operations, it is indispensible to take into consideration the indications reported
below.
During interventions, it is necessary to signal machine intervention using specific signs (these signs are positioned in such a
manner to prevent any undesired intervention on the machine).
During the interventions only authorised staff can access the work area.
ATTENTION:
DANGER:
All the materials with environmental impact which must be eliminated after maintenance interventions must be disposed of according to norms
in force.
ATTENTION::
In any case, to conduct all the maintenance and cleaning operations reported below on the machine, the following Individual
Protection Devices are necessary:
Table 9 – Particular functioning conditions.
if on start-up, the terminal connection/control is not working correctly, the terminal displays "88.8"
and the leds are all off.
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for safety reasons, all the maintenance operations reported in this chapter must only be conducted by
qualified technicians that are specifically trained.
The responsible technicians must also have all the tools and IDP necessary to operate safely.
to always guarantee operators full efficiency and safety of the machine and prevent problems linked to
deterioration of the safety measures or machine stoppages which can be taxing, it is necessary to
implement efficient preventive maintenance, by planning interventions with planned intervals, with the
purpose of renewing or replacing the normal wear parts and audit the general status of the
mechanical and electrical components composing the machine (and its auxiliary equipment), thereby
providing the instructions on possible extraordinary operations which may become necessary.
the manufacturer declines all responsibility for any damage to property and/or persons deriving from
improper interventions conducted by unqualified, untrained, inadequately equipped or unauthorised
staff.
the maintenance and cleaning operations must only be conducted by expert and specialist staff that
have read and understood all the indications reported in this Use and Maintenance Handbook.
only dismantle the parts of the machine actually necessary to conduct the specific maintenance
operation. Furthermore, before re-delivering the machine to operators, it is necessary to verify its
integrity and functionality.
to dispose of materials with high environmental impact, if necessary, appoint specialist structures.
Notes
remains until the next ON command
see par. "ddL"
displayed for 2 seconds when the defrosting command is not
performed because the evaporator temperature is already above
the defrosting end temperature (parameter dst)
at switch on, the network configuration of the unit is displayed
the terminal is not receiving data from the control
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P-SF-SV Pag. 56 Rev 00 02/11
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