Grundfos PRESSCONTROL User Manual

8
6. Operation
6.1 Normal operation
In case of minor system leakages, the pump starts.
Note: In case of a supply failure, the pump restarts
automatically when the supply has been restored.
6.2 Dry running
6.3 Frost protection
If the unit is not being used during periods of frost,
the unit and the pipework must be drained.
The unit has no drain hole and has to be removed for
drainage.
7. Technical data
* The technical data may be limited by the pump data. See installation and operating instructions for
the pump.
Step Action
1 Open a tap.
2
The unit starts the pump.
The pump runs as long as water
is consumed.
3 Close the tap.
4
The unit stops the pump at maximum
pump pressure.
5 The unit is ready for operation.
Step Action
1
Dry running!
The unit stops the pump after approx.
10 seconds.
PC/MC: The red indicator light illuminates.
EC: No indicator light.
2
Water flow!
Press Reset/Restart.
3 The unit is ready for operation.
Data EC PC MC
Supply voltage 1 x 230 V ±10 %, 50/60 Hz
Ambient temperature +65 °C +65 °C +65 °C
Maximum liquid temperature +60 °C +65 °C +65 °C
Cut-in pressure*
EC 15: 1.5 bar
EC 22: 2.2 bar
PC 15: 1.5 bar
PC 22: 2.2 bar
MC 15: 1.5 bar
MC 22: 2.2 bar
Maximum system pressure 1 MPa (10 bar) 1 MPa (10 bar) 1 MPa (10 bar)
Contact load 6 A 8 A 16 A
Enclosure class IP 65 IP 65 IP 65
Dimensions See fig. A, page 77

Grundfos PRESSCONTROL Specifications

General

Maximum Operating Pressure	10 bar
Maximum Liquid Temperature	60 °C
Frequency	50/60 Hz
Protection Class	IP65
Connection Type	Threaded
Application	Water supply
Type	Electronic pressure controller
Supply Voltage	230 V