HIdRos SHH 330, Technical Manual

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SHH
Swimming pool dehumidifiers
MTSHHGB REV.072008
25
ELECTRICAL CONNECTIONS
The power supply must correspond to the electric nominal data (tension, phases, frequency) reported on the label in the front panel
of the unit. Power connections must be made in accordance to the wiring diagram enclosed with the unit and in accordance to the
norms in force. Power cable and line protection must be sized according to the specification reported on the wiring diagram enclosed
with the unit.
WARNING: The line voltage fluctuations can not be more than ±5% of the nominal value, while the voltage
unbalance between one phase and another can not exceed 2%. If those tolerances should not be
respected, please contact our Company.
WARNING: Electric supply must be in the limits shown: in the opposite case warranty will terminate
immediately. Before every operation on the electric section, be sure that the electric supply is
disconnected.
START UP
Before start-up
•
Check that all power cables are properly connected and all terminals are hardly fixed.
•
The voltage at the phase R S T is the one shown in the unit labels.
•
Check that there is not any refrigerant leakage.
•
Check that crankcase heaters are powered correctly.
•
Check that all water connections are properly installed and all indications on unit labels are observed.
•
Before proceeding to start up check that all the cover panels are re-located in the proper position and locked with fastening
screws.
WARNING: Crankcase heaters must be powered at least 12 hours before start up by closing the main
switch (heaters are automatically supplied when main switch is closed). The crankcase heaters are
working properly if after some minutes the compressor crankcase temperature is about 10÷15°C higher
than ambient temperature.
WARNING: Never switch off the unit for temporary stop.
WARNING: Never modify internal wiring connections; warranty will be invalidated.
Start up
Before proceeding to start up close the main switch.
All the units are provided with microprocessor control that manages all the various functions of the unit.
The functions described below are applied both for local board control and remote panel control.
To start the unit turn the green switch ON (the inner led will light up), then activate hygrostat by rotating the knob o by pressing the
instrument keyboard depending on the type of instrument installed ;
If the green electrical supply led should not light up (see following page), please reverse two electrical
phases on the connection to the main switch.
Controls during unit operation
•
Check the fans rotation. If the rotation is incorrect, disconnect the main switch and change over any two phases of the incoming
main supply to reverse motor rotation (only for units with three-phase fan motors).
•
Check that the air speed through the evaporator coil is not higher than 1,5 2 m/s to grant a high dehumidification performance.
ATTENTION: If the air speeds through the evaporating coil exceeds 2 m/s, the dehumidification capacity
of the unit is highly reduced and the required environment conditions can not be respected !!!.