4
2 - Safety
2.2 Definitions
OWNER:
means the legal representative of the company, body or
individual who owns the plant where unit has been installed; he/she
has the responsibility of making sure that all the safety regulations
specified in this manual are complied with, along with the national
laws in force.
INSTALLER:
means the legal representative of the company who has
been given by the owner the job of positioning and performing the
hydraulic, electric and other connections of unit to the plant: he/she
is responsible for handling and properly installing the appliance, as
specified in this manual and according to the national regulations in
force.
OPERATOR:
means a person authorised by the owner to do on the
unit all the regulation and control operations expressly described in
this manual, that must be strictly complied with, without exceeding
the scope of the tasks entrusted to him.
ENGINEER:
means a person authorised directly by manufacturer or,
in all EC countries, excluding Italy, under his full responsibility, by the
distributor of the product, to perform any routine and extraordinary
maintenance 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 General precautions
The OPERATOR must simply use the controls of the unit; he must
not open any panel.
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
that 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
isolate the water supply to the unit, drain the connecting pipes
in order to balance the pressure to the atmospheric value before
disconnecting them, disassemble connections, filters, 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
2.4 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, always keep the
operating instructions within reach
n
start the unit only after you have checked it is correctly connected
to the plant
n
promptly inform the ENGINEER about any alarm involving the unit
n
do not reset manual restoration alarms unless they have been
correctly identified and rectified accordingly
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
before opening any panelling of the machine, make sure that it is
secured and safe to do so
Prevention of residual electrical risks
n
connect the unit to the mains according to the instructions
provided in this manual
n
periodically carry out all the maintenance operations 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 connecting 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 to the
instructions provided in this manual and on the unit’s panelling
n
if you have to disassemble a piece, make sure that it has been
properly mounted again before restarting the unit
n
when in operation or when charged with refrigerant, do not touch
the delivery pipes from the compressor and any other piping or
component inside the machine unless wearing protective gloves
n
keep a fire extinguisher for electrical appliances near the machine
