Grundfos CME User Manual

English (GB)
31
Fig. 33 Constant differential temperature
Controller settings
For recommended controller settings, see section
13.12 "Controller" (Controller settings).
Factory setting
See section 24. Factory settings.
13.5.5 "Constant flow rate"
The pump maintains a constant flow in the system,
independently of the head. See fig. 34.
Fig. 34 Constant flow rate
This control mode requires a flow sensor as shown
below:
Fig. 35 "Constant flow rate"
Controller settings
For recommended controller settings, see section
13.12 "Controller" (Controller settings).
Factory setting
See section 24. Factory settings.
Examples
• One differential-temperature sensor.
The pump uses the input from the sensor to
control the differential temperature.
You can set the sensor manually or by using the
Assist menu. See section 13.42 Assisted pump
setup.
• Two temperature sensors.
Constant differential-temperature control is
achievable with two temperature sensors. The
pump uses the input from the two sensors and
calculates the differential temperature.
Both sensors must have the same unit and must
be set as feedback sensors. You can do this
manually, sensor by sensor, or by using the
Assist menu. See section 13.42 Assisted pump
setup.
t
t
t
t
Pump variant "Constant flow rate"
CME ●
CRE, CRIE, CRNE,
SPKE, MTRE
●
TM05 7955 1713
Example
H
Q
Q
set
Q

Grundfos CME Specifications

General

Liquid temperature range	0 °C to +60 °C
Maximum operating pressure	10 bar
Series	CME
Frequency	50/60 Hz
Max Pressure	10 bar
Pump Type	Centrifugal
Material	Stainless steel
Applications	pressure boosting, irrigation
Pumped liquid	Clean water
Approvals	CE
Max Liquid Temperature	60°C
Power Supply	1-phase or 3-phase