Airwell MQL 6 [6/40] English
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Airwell MQL 6 [6/40] English

Airwell MQL 15 [6/40] English
Page 5
English
Safety
h
periodically check the board’s internal wiring
h
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
h
make sure that the connections to the unit conform
to the instructions provided in this manual and on
the unit’s panelling
h
if you have to disassemble a piece, make sure that
it has been properly mounted again before restart-
ing the unit
h
do not touch the delivery pipes from the compres-
sor, the compressor and any other piping or com-
ponent inside the machine before wearing protec-
tive gloves
h
keep a fire extinguisher fir for electrical appliances
near the machine
h
on the units installed indoor, connect the safety
valve of the refrigeration circuit to a piping net-
work that can channel any overflowing refrigerant
outside
h
remove and leak of fluid inside and outside the unit
h
collect the waste liquids and dry any oil spillage
h
periodically clean the compressor compartment, to
remove any fouling
h
do not store flammable liquids near the unit
h
do not disperse the refrigerant and the lubricating
oil into the environment
h
weld only empty pipes; do not approach flames or
other sources of heat to refrigerant pipes
h
do not bend/hit pipes containing fluids under pres-
sure
2.6 Precautions during maintenance
operations
Maintenance operations can be carried out by au-
thorised technicians only.
Before performing any maintenance operations:
h
disconnect the unit from the mains with the external
disconnecting switch
h
place a warning sign “do not turn on - mainte-
nance in progress” on the external disconnecting
switch
h
make sure that on-off remote controls are inhibited
h
wear suitable personal protective equipment (hel-
met, safety gloves, goggles and shoes etc.)
To carry out any measurements or checks which re-
quire the activation of the machine:
h
work with the electrical board open only for the
necessary time
h
close the electrical board as soon as the measure-
ment or check has been completed
h
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:
h
do not scatter the fluids of the refrigeration circuit
in the surrounding environment
h
when replacing an eprom or electronic cards, use
always suitable devices (extractor, antistatic
bracelet, etc.)
h
o replace a compressor, the evaporator, the con-
densing coils or any other weighty element, make
sure that the lifting equipment is consistent with the
weight to be lifted
h
in air units with independent compressor compart-
ment, do not access the fan compartment unless
you have disconnected the machine by the discon-
necting switch on the board and you have placed
a warning sign “do not turn on - maintenance in
progress”
h
contact Itelco-Clima for any modifications to the re-
frigeration, hydraulic or wiring diagram of the
unit, as well as to its control logics
h
contact Itelco-Clima if it is necessary to perform
very difficult disassembly and assembly operations
h
use only original spare parts purchased directly
from Itelco-Clima or the official retailers of the com-
panies on the recommended spare parts list
h
contact Itelco-Clima if it is necessary to handle the
unit one year after its positioning on site or if you
wish to dismantle it.
Manuale MQL-MQH 10.6.2005 12:26 Pagina 5

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