Setting - Grundfos LCD 108 Installations- Und Bedienungsanleitung

If the PTC resistance/thermal switch of the motor
is connected, the factory-fitted short-circuit
jumper must be removed (terminals T11-T21,
Caution
T12-T22). For correct installation of PTC resistor/
thermal switch, see the installation and operating
instructions of the pump.
Single-phase motors must be connected to an external operating
capacitor and in certain cases also to a starting capacitor.
Further details can be found in the installation and operating
instructions for the pump in question.
Warning
Float switches placed in an explosion hazard
area must be connected via an EEx barrier, e.g.
Grundfos number 96440300.
The EEx barrier must not be installed in the
explosion hazard area.
Equipment used in explosion hazard areas must
in each individual case have been approved for
this particular application. Furthermore, the
cables into the explosion hazard area must be
laid in accordance with local regulations.
Float switches of the same type as Grundfos
product number 96003332 or 96003695, i.e.
float switches with gold-plated contacts suitable
Note
for low voltages and currents (40 V / 100 mA),
must be used. All EEx-approved float switches
are also suitable.
The float switches must be connected as NO contacts, i.e. brown
and black leads, when float switches, Grundfos product number
96003332 or 96003695, are used.
Key to the symbols in fig. 1 on page
page 143:
Pos. Description
Float switch for start of the first pump/
1
common stop.
2 Float switch for start of the next pump.
3 Float switch for high-level alarm.
8
142 and fig. 2 on
Terminal
number
11-12
21-22
31-32

4.2 Setting

Parallel operation with 3 float switches, pages
The module CU 212 has a 10-pole DIP switch in the bottom right
corner, see fig. 6.
During the setting of the DIP switch, the
controller must always be dead for at least
Caution
1 minute to achieve the correct configuration
during start-up after change of the DIP switch
setting.
The DIP switch setting offers the following possibilities:
• selection of starting delay and automatic test run (switch 4),
• setting of stop delay (switches 5, 6 and 7),
• selection of automatic alarm resetting (switch 9),
• selection of automatic restarting (switch 10).
Fig. 6
Set the DIP switch as shown in fig. 6.
Each individual switch (1 to 10) of the DIP switch can be set to
position OFF or ON.
The DIP switch must not be set to other switch
combinations than those described in this
Note
section.
Set the switches 1 to 10 as follows:
• Switches 1, 2 and 3, application type:
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
This setting determines the actual application type
(parallel operation with 3 float switches, pages
143).
• Switch 4, starting delay and automatic test run (only in the
case of battery back-up):
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
At this setting, the start-up is delayed within the range
from 0 to 255 sec. (random) after the electricity supply
has been switched on when the liquid level is
sufficiently high.
Automatic test run carried out every 24 hours.
After the electricity has been switched on, the pump will
start immediately when the liquid level is sufficiently
high.
No automatic test run.
142 and 143.
142 and