Grundfos CU 321 Installation And Operating Instructions página 17

Pump size
The Pump size is selected from a list of possible
sizes. The default size is 40.
To change the pump size, press
the or button to go to the desired setting.
The display starts flashing when the
is pressed and it will display the pump size using:
PU XX (XX = actual pump size).
For possible pump sizes, see the table below.
Change/
Press to select the pump size. The display stops
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flashing.
Possible pump sizes:
3 hp
CU 321 data Pump
75 75S30-5
40 (default) 40S30-9
25 25S30-15
16 16S30-24
5 hp
CU 321 data Pump
75 75S50-8
40 (default) 40S50-15
25 25S50-26
16 16S50-38
Press to go to the next menu: Max. speed.
Max. speed
The Max. speed menu makes it possible to reduce
the max. speed of the pump.
To change the max. speed, press
the or button to go to the desired setting.
The display starts flashing when the
is pressed and it will display the max. speed using:
SP XXX (XXX = actual max. speed)
(360 = 3600 rpm and 150 = 1500 rpm).
Change/
Press to select the speed. The display stops
Enter
flashing.
Range of max. speed settings:
Max. 3600 rpm (default)
Min. 1500 rpm
Press to go to the next menu: Reset type.
Reset type
The Reset type menu makes it possible to choose
between two types of reset: Automatic or manual.
Change/
and use If automatic reset is selected, the CU 321 automati-
Enter
cally resets in case of a fault.
Change/
button If manual reset is selected, press
Enter
alarm.
To change the reset type, press
the
The display starts flashing when the
is pressed and it will display the reset type using:
Re X (X = Reset type).
Automatic resetting time: 10 seconds.
(Resetting time for dry run: 30 minutes.)
Press
flashing.
Possible reset types:
0
1
Press
ing hours.
Controller operating hours
The Controller operating hours menu displays the
number of hours that the CU 321 has been con-
nected to the mains.
The display shows: hD XXX (XXX = the hours the
CU 321 has been connected to mains). The scale
is x100 hours.
The value is not reset at power-off.
Press
hours.
Pump operating hours
The Pump operating hours menu displays the num-
Change/
and use
ber of hours that the pump has been running.
Enter
The display shows: hP XXX (XXX = the operating
Change/ button
hours of the pump). The scale is x100 hours.
Enter
The value is not reset at power-off.
Press
1st alarm
The 1st alarm menu displays the alarm code of
the latest alarm.
The display shows: AL1 XX (XX = alarm code).
For more information about alarm codes, see
section 5.4.
Press
2nd alarm
The 2nd alarm menu displays the alarm code of
the 2nd alarm.
The display shows: AL2 XX (XX = alarm code).
For more information about alarm codes, see
section 5.4.
Press
Change/
or button to go to the desired setting.
Change/
to select the reset type. The display stops
Enter
Manual
Automatic (default)
to go to the next menu: Controller operat-
to go to the next menu: Pump operating
to go to the next menu: 1st alarm.
to go to the next menu: 2nd alarm.
to go to the next menu: 3rd alarm.
Off/ to reset the
Reset
and use
Enter
Change/
button
Enter
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