Setting Up The Pump; Factory Setting; Setting By Means Of Control Panel - Grundfos CRIE Installation And Operating Instrictions

7.3.2 Pumps with pressure sensor
The pump can be set to one of two control modes, i.e. controlled
and uncontrolled, fig. 18.
In control mode controlled, the pump will adjust its performance,
i.e. pump discharge pressure, to the desired setpoint for the
control parameter.
In control mode uncontrolled, the pump will operate according to
the constant curve set.
Controlled
H
H
set
Q
Fig. 18 Pump in control mode controlled (constant pressure)
or uncontrolled (constant curve)

8. Setting up the pump

8.1 Factory setting

Pumps without factory-fitted sensor
The pumps have been factory-set to control mode uncontrolled.
The setpoint value corresponds to 100 % of the maximum pump
performance (see data sheet for the pump).
Pumps with pressure sensor
The pumps have been factory-set to control mode controlled.
The setpoint value corresponds to 50 % of the sensor measuring
range (see sensor nameplate).
Uncontrolled
H
Q

9. Setting by means of control panel

The pump control panel, see fig.
following buttons and indicator lights:
• Buttons, and , for setpoint setting.
• Light fields, yellow, for indication of setpoint.
• Indicator lights, green (operation) and red (fault).
Light fields
Indicator lights
Fig. 19 Control panel, single-phase pumps, 0.5 - 1.5 hp
Light fields
Indicator lights
Fig. 20 Control panel, three-phase pumps, 1-30 hp
19 or 20, incorporates the
Buttons
Buttons
11