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6.1.
RECOMMENDED ELECTRIC
CABLE SECTION
The cable section shown in the table
are recommended for maximum
lengths of 50m.
For longer lengths or different cable
laying, it is up to the PLANNER to
calculate the appropriate line switch,
the power supply line as well as the
connection to the earth wire and
connection cables depending on:
− the length
− the type of cable
− the absorption of the unit and the
physical location, and the ambient
temperature.
ATTENTION:
Check the tightening of all power wire
clamps on commissioning and after
30 days from start-up. Subsequently,
check the tightening of all the power
clamps every six months.
Loose terminals can cause
overheating of the cables and
components.
6.2.
ELECTRIC POWER CONNECTION
TO THE ELECTRICAL MAINS
1.
Before connecting the unit to the
power supply mains , ensure that
the isolating switch is open.
2.
Open the front panel
3.
Use the holes at the top on
the framework for the main
electric power supply cable
and for the cables of the other
external connections under the
responsibility of the installer.
4.
It is forbidden to access with
electric cables in positions not
specifically envisioned in this
manual.
5.
Avoid direct contact with not
insulated copper piping and with
compressor.
6.
Identify the clamps for the
electric connection, always refer
to the electric layout supplied
with the unit.
7.
For the functional connection
of the unit bring a power
supply cable to the electric
control board inside the unit
and connect to the U-N and PE
clamps respecting (U) phase,
(N) neutral, (PE) earth in case
of single-phase power supply
(230V~50Hz),
8.
U-V-W like phases, N like neutral
and PE like earth in case of
three-phase power supply
(400V-3N~50Hz).
9.
Re-position the inspection panels
10. Ensure that all protections
removed for the electric
connection have been restored
before electrically powering the
unit.
14
11. Position the main system switch
(external to the appliance) at
"ON".
7.
CONTROL AND
COMMISSIONING
7.1.
PREPARATION FOR
COMMISSIONING
Please note that, on request by the Aermec
customer or the legitimate owner of the
machine, the units in this series can be
started up by the AERMEC After-Sales
Service in your area (valid only on Italian
territory).
The start of operation must be scheduled in
advance based on the timeframe for the
completion of works for the system. Prior to
the work to be carried out by the AERMEC
service personnel, all other works (electrical
and hydraulic hook-ups, priming and
bleeding of air from the system) must have
been completed.
Before starting the unit make sure that:
1.
All safety conditions have been
respected
2.
The unit is correctly fixed to the
support surface
3.
The minimum technical spaces
have been respected;
4.
The hydraulic connections have
been made respecting the inlet
and outlet
5.
The hydraulic plant has been
loaded and bled.
6.
The hydraulic circuit cocks are
open
7.
The electric connections have
been made correctly
8.
The voltage is within the tolerance
of 10% of the unit nominal value
9.
Earthing is correctly made.
All electric and hydraulic
connections are correctly
tightened.
7.2.
MACHINE COMMISSIONING
- Close the electric control board
hatch.
- Position the appliance door-lock
isolating switch at ON,
turning the handle downwards.
- Press the ON key to switch the
machine. When the LED is on the unit
is ready for functioning.
For electric connections, use the cables
with double isolation according to the
Standards in force on this subject in the
countries where the unit is installed.
Commissioning must be performed
with standard settings. Only when the
inspection has been completed can
the functioning Set Point values by
changed.
Before start-up, power the unit for
at least 12-24 hours positioning the
protection magnet circuit breaker
switch and the door lock isolating
switch at ON
Make sure that the control panel is off
in order to allow the compressor sup oil
to heat.
IWRLI2. 1810. 4900577_05
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