Grundfos LCSE Installation And Operating Instructions Manual page 34

7.4.5 "Constant flow rate"
Pump variant
LCSE
VLSE
The pump maintains a constant flow in the system, independently
of the head. See fig. 43.
H
Fig. 43 Constant flow rate
This control mode requires a flow sensor as shown below:
Example
Q
Fig. 44 "Constant flow rate"
"Controller settings"
For recommended controller settings, see section
Controller settings"
7.11 "Controller" ("
Factory setting
See section
10. Technical data.
34
"Constant flow
rate"
●
●
Q
Q
set
).
7.4.6 "Constant level"
Pump variant
LCSE
VLSE
The pump maintains a constant level, independently of the flow
rate. See fig. 45.
H
Fig. 45 "Constant level"
This control mode requires a level sensor.
The pump can control the level in a tank in two ways:
• As an emptying function where the pump draws the liquid from
a feed tank.
• As a filling function where the pump pumps the liquid into a
storage tank.
See fig. 46.
The type of level control function depends on the setting of the
built-in controller. See section
7.11 "Controller" ("
settings"
).
Examples
• One level sensor.
– emptying function (feed tank).
L
• One level sensor.
– filling function (storage tank).
L
Fig. 46 "Constant level"
"Controller settings"
For recommended controller settings, see section
Controller settings"
7.11 "Controller" ("
Factory setting
See section
10. Technical data.
"Constant level"
●
●
Q
Controller
).