Fault Finding Chart; Technical Data; Disposal - Grundfos CU 100 Montage- Und Betriebsanleitung

9. Fault finding chart

Warning
Before starting any work on pumps used to pump liquids which could be constituted as being
hazardous to health, thorough cleaning/venting of pumps, pits, etc. must be carried out
according to local regulations.
Before making any connections in the CU 100 or work on pumps, pits, etc., it must be
ensured that the electricity supply has been switched off and that it cannot be accidentally
switched on.
Fault
1. The pump does not
run.
2. The pump starts and
stops too frequently.

10. Technical data

Voltage variants, rated voltages
• 1 x 230 V, 50 Hz.
• 3 x 230 V, 50 Hz.
• 3 x 400 V, 50 Hz.
Voltage tolerances
–15%/+10%.
See the voltage tolerance stated in the installation
and operating instructions for the pump.
Back-up fuse
Depending on variant, see nameplate.
Ambient temperature
• During operation: –30°C to +50°C.
• In stock: –30°C to +60°C.
Enclosure class
IP54.
EMC (electromagnetic compatibility)
According to EN 61 000-6-2 and EN 61 000-6-3.
Weight
Approx. 4 kg. Depending on variant, see nameplate.
8
Cause
a) Incorrect setting of switches.
b) Fuse in front of the control box
blown.
c) The float switch does not function.
d) Capacitor defective.
a) Incorrect setting of motor starter.
b) Float switch not positioned
correctly.
Remedy
Check the setting of the switches in the
cabinet front. Select the desired
operating mode.
Replace the fuse.
Clean or replace the float switch.
Replace the capacitor.
Set the motor starter to the rated
current stated on the pump nameplate
(three-phase variants only).
Place the float switch in the right
position.

11. Disposal

This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
Subject to alterations.