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English (US)
Resetting an alarm manually
• Press OK in the alarm display.
• Press On/Off twice.
• Activate a digital input DI 1 (Start/stop).
If it is not possible to reset an alarm, the reason may be that the
fault has not been remedied, or that the alarm has been locked.
14.2.3 Locked alarm
In case of a locked alarm, the CU331SP will stop the pump and
become locked. Pump operation cannot be resumed until the
cause of the locked alarm has been remedied and the alarm has
been reset.
Resetting a locked alarm
• Switch off the power supply to the CU331SP for approx.
30 seconds. Switch on the power supply, and press OK in the
alarm display to reset the alarm.
14.3 Indicator lights
The table show the function of the indicator lights.
14.4 Signal relays
The table show the function of the signal relays.
15. Technical data
15.1 Enclosure
All CU331SP enclosures are size B1. The enclosure rating can
be either IP 55 / TYPE 12 or IP 66 / TYPE 4X
15.2 Main dimensions and weight
1)
The dimensions are maximum height, width and depth.
15.3 Surroundings
15.4 Terminal tightening torques
Indicator
light
Function
On (green)
The pump is running or has been stopped by a
stop function.
If flashing, the pump has been stopped by the
user (CU331SP menu), external start/stop or
bus.
Off (orange)
The pump has been stopped with the On/Off
button.
Alarm (red) Indicates an alarm or a warning.
Type Function
Relay 1 • Pump running
Relay 2 •Alarm
TM03 9002 2807
Fig. 24 Enclosure B1
Enclo-
sure
Height
[in]
Width
[in]
Depth
[in]
B1
AaBbC
18.9 17.9 9.5 8.3 10.2
Screw holes [in]
Weight
[lbs]
cdef
0.47 0.75 0.35 0.35 50.7
Relative humidity 5-95 % RH
Ambient temperature
Max. 122 °F
(50 °C)
Average ambient temperature over 24 hours
Max. 113 °F
(45 °C)
Minimum ambient temperature at full
operation
32 °F (0 °C)
Minimum ambient temperature at reduced
operation
14 °F (-10 °C)
Temperature during storage and
transportation
-13 to 150 °F
(-25 to 65 °C)
Storage duration Max. 6 months
Maximum altitude above sea level without
performance reduction
3280 ft (1000 m)
Maximum altitude above sea level with
performance reduction
9840 ft (3000 m)
The CU331SP comes in a packaging which is not
suitable for outdoor storage.
Enclosure
Tightening torque [ft-lb]
Mains Motor Earth Relay
B1 1.3 1.3 2.2 0.4
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