Hitecsa CED 11.1 Instrucciones De Instalación, Funcionamiento Y Mantenimiento página 40

I N S T A L L A T I O N
PRESSURE TRANSDUCER
The point of operation required by the full power supply (FVS) can be adjusted by acting on the screw (R) of the pressure
transducers.
The factory settings of the transducers P35AC are:
8 - 14 bar = 10 bar (=FVS)
14 - 24 bar = 16 bar (=FVS)
Minimum Speed
In order to avoid that the fan speed goes below accepted levels, the power of the minimum speed (Vrms) can be set between
45% and 90% of the power supply by acting on the knob of the electronic module P38AA.
The value of the minimum speed is reflected on the proportional band . The higher the value of the minimum speed, the
lower the actual proportional band.
Cut-off Point
If the controller does not need to run at minimum speed, set the knob that is on the electronic module at the cut-off point. The
output to the motor will be cut-off the moment the pressure descends below the value of the operating point required less the
proportional band (the fan stops).
The control is factory set so that the fan is able to work from 0 to 100% of its speed, since the fans normally used are capable
of operating throughout the whole tension range.
System control
Once the control unit has been installed and adjusted, check the system by making the equipment run for at least one full
operating cycle. If something should not operate correctly, check both the wiring as well as the components.
05.08 Ref.200989 Rev.100 41