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Original installation and operating instructions.
CONTENTS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Warning
Prior to installation, read these
installation and operating instructions.
Installation and operation must comply
with local regulations and accepted
codes of good practice.
1. General description
The control box CU 100 is designed for the control of
small pumps.
The CU 100 is incorporated in an IP54 plastic
cabinet and has screwed metric cable entries.
The control box is available in several variants which
can be used for
•
single-phase pumps or
•
three-phase pumps
and
•
start/stop by means of a float switch or
•
manual start/stop.
Single-phase control boxes are supplied with
capacitors and with or without float switch.
Three-phase control boxes are supplied with a float
switch.
2. Applications
The control box CU 100 is designed for the starting,
operation and protection of small pumps.
•
Single-phase: up to 9 amps.
•
Three-phase: up to 5 amps.
See section 10. Technical data.
4
3. Type key
Example
Page
Type range
4
Type designation
4
Voltage:
4
230 = 230 [V]
4
400 = 400 [V]
5
Number of phases:
7
1 = One phase
7
3 = Three phases
7
Maximum amp. consumption for the
8
pump [A]
8
Run / starting capacitor [μF]
8
A = with float switch
[ ] = without float switch
4. Functions
The control boxes CU 100 incorporate:
•
an on/off switch (O/I),
•
a contactor which is cut in and out by the float
switch (if installed) and/or
•
a man/auto switch in the cabinet front as well as
•
capacitors for single-phase variants.
During manual operation, the pump is started and
stopped by means of the man/auto switch or the
thermal relay.
Single-phase variants: The thermal relay must be
reset manually with the button in the cabinet front.
Three-phase variants: The motor starter is
automatically reset.
During automatic operation, the float switch will start
and stop the pump.
See the following functional block diagram.
Functional block diagram:
Float switch
Fig. 1
CU
100
230 1 9 30/150
Control box
Pump
A
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