Hitecsa EWFAIB, Installation, Operation And Maintenance Instructions, Page: 6 / 49

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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.