5 Description
12 of 44
Hya-Solo DSV
5.5 Configuration and function
Fig.3: Illustration of a Hya-Solo DSV
1 Master switch 2 Accumulator
3 Pump 4 Pressure sensor
5 PumpDrive 6 Valves
Design
The fully automatic pressure booster system is equipped with a non-self-priming
vertical high-pressure pump (3) for pumping the fluid handled to the consumer
installations at a constant pressure.
Function
Automatic mode
The pump is started as a function of pressure and stopped as a function of flow by a
fully automatic control unit. If the pressure drops below the pre-set pressure, the
pump starts up and the frequency inverter controls the pressure booster system to
maintain the set pressure, so that the pressure is kept constant.
If the demand decreases, the pump stops as soon as the flow rate has fallen below a
set minimum value.
Function
Manual mode
A key for manual operation is provided on the control panel. In manual mode the
pump operates at the pre-set minimum speed, independently of the automatic
system (pressure transmitter) or an External ON/OFF signal.
NOTE
Continuous manual mode is reserved exclusively for emergencies!
Continuous operation of the pressure booster system in manual mode may result in
waste of energy and water.
In manual mode, a minimum flow (see table below) is essential to prevent the fluid
handled and the pump from overheating when no water is consumed at the
consumer installations.
Minimum flow for pump in manual mode
Table5: Minimum flow per pump in manual mode
Pump Minimum flow per pump in manual mode
[l/h]
Movitec 2B 200
Movitec 4B 400
Movitec 6B 600
Movitec 10B 1100
Movitec 15B 1600
Movitec 25B 2800
Movitec 40B 4600
Movitec 60B 6100
Movitec 90B 8500
Example
An open
1
/
2
-inch tap equals a water consumption of approx. 800 to 1,200l/h.