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English
2 - Safety
Q periodically check the board’s internal wiring
Q 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
Q make sure that the connections to the unit conform to the
instructions provided in this manual and on the unit’s panelling
Q if you have to disassemble a piece, make sure that it has been
properly mounted again before restarting the unit
Q do not touch the delivery pipes from the compressor, the
compressor and any other piping or component inside the
machine before wearing protective gloves
Q keep a fire extinguisher fir for electrical appliances near the
machine
Q on the units installed indoor, connect the safety valve of the
refrigeration circuit to a piping network that can channel any
overflowing refrigerant outside
Q remove and leak of fluid inside and outside the unit
Q collect the waste liquids and dry any oil spillage
Q periodically clean the compressor compartment, to remove any
fouling
Q do not store flammable liquids near the unit
Q do not disperse the refrigerant and the lubricating oil into the
environment
Q weld only empty pipes; do not approach flames or other sources
of heat to refrigerant pipes
Q do not bend/hit pipes containing fluids under pressure
2.6 Precautions during maintenance operations
Maintenance operations can be carried out by authorised technicians
only.
Before performing any maintenance operations:
Q disconnect the unit from the mains with the external disconnecting
switch
Q place a warning sign “do not turn on - maintenance in progress”
on the external disconnecting switch
Q make sure that on-off remote controls are inhibited
Q wear suitable personal protective equipment (helmet, safety
gloves, goggles and shoes etc.)
To carry out any measurements or checks which require the
activation of the machine:
Q work with the electrical board open only for the necessary time
Q close the electrical board as soon as the measurement or check
has been completed
Q for outdoor units, do not carry out any operations in the presence
of dangerous climatic conditions (rain, snow, mist etc.)
The following precautions must be always adopted:
Q do not scatter the fluids of the refrigeration circuit in the
surrounding environment
Q when replacing an eprom or electronic cards, use always suitable
devices (extractor, antistatic bracelet, etc.)
Q to replace a compressor, the evaporator, the condensing coils or
any other weighty element, make sure that the lifting equipment is
consistent with the weight to be lifted
Q in air units with independent compressor compartment, do not
access the fan compartment unless you have disconnected the
machine by the disconnecting switch on the board and you have
placed a warning sign “do not turn on - maintenance in progress”
Q contact manufacturer for any modifications to the refrigeration,
hydraulic or wiring diagram of the unit, as well as to its control
logics
Q contact manufacturer if it is necessary to perform very difficult
disassembly and assembly operations
Q use only original spare parts purchased directly from manufacturer
or the official retailers of the companies on the recommended
spare parts list
Q contact manufacturer if it is necessary to handle the unit one year
after its positioning on site or if you wish to dismantle it.
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