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ENGINEER: means a person authorised directly by
manufacturer or, in all EC countries, excluding Italy,
under his full responsibility, by the distributor of prod-
uct, to perform any routine and extraordinary mainte-
nance operations, as well as any regulation, control,
servicing operations and the replacement of pieces, as
may be necessary during the life of the unit.
2.3 Access to the unit
The unit must be placed in an area which can be ac-
cessed also by OPERATORS and ENGINEERS; oth-
erwise the unit must be surrounded by a fence at not
less than 2 meters from the external surface of the ma-
chine.
OPERATORS and ENGINEERS must enter the fenced
area only after wearing suitable clothing (safety shoes,
gloves, helmet etc.). The INSTALLER personnel or any
other visitor must always be accompanied by an OP-
ERATOR.
For no reason shall any unauthorised personnel be left
alone in contact with the unit.
2.4 General precautions
The OPERATOR must simply use the controls of the
unit; he must not open any panel, other than the one
providing access to the control module.
The INSTALLER must simply work on the connections
between plant and machine; he must not open any
panels of the machine and he must not enable any
control.
When you approach or work on the unit, follow the
precautions listed below:
n
do not wear loose clothing or jewellery or any other
accessory tat may be caught in moving parts
n
wear suitable personal protective equipment
(gloves, goggles etc.) when you have to work in the
presence of free flames (welding operations) or with
compressed air
n
if the unit is placed in a closed room, wear ear pro-
tection devices
n
cut off connecting pipes, drain them in order to bal-
ance the pressure to the atmospheric value before
disconnecting them, disassemble connections, fil-
ters, joints or other line items
n
do not use your hands to check for any pressure
drops
n
use tools in a good state of repair; be sure to have
understood the instructions before using them
n
be sure to have removed all tools, electrical cables
and any other objects before closing and starting
the unit again
2.5 Precautions against residual risks
Prevention of residual risks caused by the
control system
n
be sure to have perfectly understood the operating
instructions before carrying out any operation on
the control panel
n
when you have to work on the control panel, keep
always the operating instructions within reach
n
start the unit only after you have checked its perfect
connection to the plant
n
promptly inform the ENGINEER about any alarm
involving the unit
n
do not reset manual restoration alarms unless you
have identified and removed their cause
Prevention of residual mechanical risks
n
install the unit according to the instructions provided
in this manual
n
carry out all the periodical maintenance operations
prescribed by this manual
n
wear a protective helmet before accessing the inte-
rior of the unit
n
before opening any panelling of the machine, make
sure that it is secured to it by hinges
n
do not touch air condensation coils without wearing
protective gloves
n
do not remove the guards from moving elements
while the unit is running
n
check the correct position of the moving elements’
guards before restarting the unit
Prevention of residual electrical risks
n
connect the unit to the mains according to the in-
structions provided in this manual
n
periodically carry out all the maintenance opera-
tions specified by this manual
n
disconnect the unit from the mains by the external
disconnecting switch before opening the electrical
board
n
check the proper grounding of the unit before start-
up
n
check all the electrical connections, the connect-
ing cables, and in particular the insulation; replace
worn or damaged cables
n
periodically check the board’s internal wiring
n
do not use cables having an inadequate section or
flying connections, even for limited periods of time
or in an emergency
Prevention of other residual risks
n
make sure that the connections to the unit conform
Safety
