Airwell VLS 804 [7/85] Safety
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Airwell VLS 804 [7/85] Safety

Airwell VLS 804 [7/85] Safety
Page 6
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I
periodically check the board’s internal wiring
I
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
I
make sure that the connections to the unit conform
to the instructions provided in this manual and on
the unit’s panelling
I
if you have to disassemble a piece, make sure that
it has been properly mounted again before restar-
ting the unit
I
do not touch the delivery pipes from the compres-
sor, the compressor and any other piping or com-
ponent inside the machine before wearing protecti-
ve gloves
I
keep a fire extinguisher fir for electrical appliances
near the machine
I
on the units installed indoor, connect the safety val-
ve of the refrigeration circuit to a piping network
that can channel any overflowing refrigerant outsi-
de
I
remove and leak of fluid inside and outside the unit
I
collect the waste liquids and dry any oil spillage
I
periodically clean the compressor compartment, to
remove any fouling
I
do not store flammable liquids near the unit
I
do not disperse the refrigerant and the lubricating
oil into the environment
I
weld only empty pipes; do not approach flames or
other sources of heat to refrigerant pipes
I
do not bend/hit pipes containing fluids under pres-
sure
2.6 Precautions during maintenance
operations
Maintenance operations can be carried out by
authorised technicians only.
Before performing any maintenance operations:
I
disconnect the unit from the mains with the external
disconnecting switch
I
place a warning sign “do not turn on - maintenan-
ce in progress” on the external disconnecting swit-
ch
I
make sure that on-off remote controls are inhibited
I
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:
I
work with the electrical board open only for the ne-
cessary time
I
close the electrical board as soon as the measure-
ment or check has been completed
I
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:
I
do not scatter the fluids of the refrigeration circuit in
the surrounding environment
I
when replacing an eprom or electronic cards, use
always suitable devices (extractor, antistatic brace-
let, etc.)
I
to 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
I
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”
I
contact Itelco-Industry for any modifications to the
refrigeration, hydraulic or wiring diagram of the
unit, as well as to its control logics
I
contact Itelco-Industry if it is necessary to perform
very difficult disassembly and assembly operations
I
use only original spare parts purchased directly
from Itelco-Industry or the official retailers of the
companies on the recommended spare parts list
I
contact Itelco-Industry if it is necessary to handle
the unit one year after its positioning on site or if
you wish to dismantle it.
VLS-eng.qxp 12-04-2007 14:43 Pagina 6

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