System Configuration; Function; Installation; Location - Grundfos Hydro Solo-S Montage- Und Betriebsanleitung

3. System configuration

2
3
1
6 5 4
Fig. 2
Pos. Description
1 Pump
2 Diaphragm tank
3 Pressure switch
4 Pressure gauge
5 Discharge pipe, brass
6 Isolating valve

3.1 Function

The booster set is cut in and out by means of the
pressure switch. When water is consumed, this is
tapped from the diaphragm tank.
Then the pressure drops to a preset pump cut-in
pressure and the pump starts.
When the water consumption falls, the discharge
pressure rises. The pump stops when the cut-out
pressure preset on the pressure switch is reached.

4. Installation

4.1 Location

The booster set should be installed and electrically
connected in accordance with local regulations.
The booster set should be located in a well ventilated
room. The motor requires an adequate air supply to
prevent overheating.

4.2 Pipe connection

Arrows on the pump base show the direction of flow
of water through the pump.
The pipes connected to the booster set must be
adequately sized.
The booster set has no non-return valve.
Caution
A non-return/foot valve must be fitted to
the suction pipe.

4.3 Priming

Do not start the pump until it has been filled with
liquid.
Closed systems or open systems where the
liquid level is above the pump inlet
1. Close the isolating valve on the discharge pipe.
2. Remove the priming plug (pos. 1) from the pump
head. See fig. 3.
3. Gradually open the isolating valve on the suction
pipe until a steady stream of liquid runs out the
priming port.
4. Refit the priming plug and tighten securely.
5. Open the isolating valve(s).
Fig. 3
Pos. Description
1 Priming plug
2 Drain plug
3 Drain plug/bypass valve
2
3
5