Unical HP OWER ONE 70, Руководство пользователя и инсталлятора

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1. Remove the screws connecting the top plate. Two for each side of the unit and other two
crews connecting the top plate with the hole-cable plate holder. (For the small sizes, there is
only one fixing screw in the controller’s lateral part of the unit)
2. Remove the screws connecting the cover plate of the electric box then proceed to connect
wire to the terminal block.
3. Insert the cables PG cable glands located on the side of the unit to take them outside the unit
4. Close the electric box and the top panel of the unit with their fixing screws.
The above operations must be done after turning off the unit and disconnecting
it from the power supply (by mean of an appropriate disconnecting switch
which should be already mouted by the installer).
Operations to be performed by qualified personnel.
Remove the top cover without taking away the holder of hole-cabe plate.
The work is completed, please fix all the removed plates then tighten all screws
and washers (if expected).
6 START UP
Before start-up:
•
Check out the availability of the supplied wiring diagrams and manuals of installed apparatus.
•
Check out the availability of the electrical and hydraulic diagrams of the plant in which the unit is installed.
•
Check that the shut-off valves of the hydraulic circuits are open.
• Verify that the hydraulic circuit has been charged under pressure and air vented.
• Check out that all water connections are properly installed and all indications on unit labels are observed.
• Ensure that arrangements have been provided to drain the condensate.
• Check out that all power cables are properly connected and all terminals are hardly fixed.
• Check that electrical connections are carried out according to the norms in force including grounding.
• Check out that the voltage is the one indicated in the unit labels.
• Make sure the voltage is within the limits (±10%) of tolerance range.
•
Check out that crankcase heaters are powered correctly.
•
Check out that there is no refrigerant leakage.
• Check out that all the cover panels are installed in the proper position and locked with fastening screws before start up.
WARNING: The unit must be connected to the electrical network and should be in STAND-BY mode (powered) closing
the general switch in order to operate the crankcase heaters of the compressor for a minimum of 12 hours before
start up. (the heaters are automatically powered when the main switch is switched off). The crankcase heaters are
working properly if, after some minutes, the temperature of crankcase’s compressor is about 10°C ÷ 15°C higher than
ambient temperature.
WARNING: The weight of the pipes doesn’t load unit structure.
WARNING: Never switch off the unit (for a temporary stop) by switching off the main switch: this component should
be used to disconnect the unit from the power supply only for lengthy stoppages (e.g. seasonal stoppages). Besides,
failing the power supply, the crankcase’s heaters are not supplied thus resulting in a possible breakdown of the
compressors once the unit is switched on.
WARNING: Do not modify the internal wiring of the unit otherwise the warranty will terminate immediately.
WARNING: The summer/winter operating mode have to be selected at the beginning of the related season. Frequent
and sudden changes of this seasonal operating mode have to be avoided in order to prevent severe damages to
compressors.
WARNING: When you first install and start-up the unit make sure that the unit is working properly in both cooling
and heating modes.
7 INDICATIONS FOR THE USER
It’s important to take note of the identification data of the unit in order to provide them to the Technical Assistance Service in case
of assistance request.
The identification plate fixed on the unit shows the technical specifications and the performance of the equipment.
In case of manumission, removal or deterioration, please ask a duplicate to the Technical Assistance Service.
The manumission, removal or damaging of the nameplate makes difficult any operation of installation,
maintenance and spare parts request.
It is recommended to keep track of assistance operations done on the unit; this will make easy searching any troubleshooting.
In case breakdown or malfunction situations:
•
check the type of alarm to communicate it to the service center;
• contact an authorized service center;