Setting - Grundfos LC 108 Montage- Und Betriebsanleitung

4.2 Setting

2 float switches, pages 187 and 188.
The CU 211 module has a 10-pole DIP switch in the bottom right
corner, see fig. 5.
The controller must be off circuit to ensure the
Caution
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. 5
Set the DIP switch as shown in fig. 5.
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
Note combinations than those described in this
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
(2 float switches, pages 187 and 188).
• 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.
• Switches 5, 6 and 7, stop delay:
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
The stop delay is the time from the stop signal is given until the
pump is stopped.
It must be ensured that the pump is not running dry.
0 sec.
15 sec.
30 sec.
45 sec.
• Switch 8:
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
Switch 8 has no function in connection with the actual
application (2 float switches, pages 187 and 188), but
this setting must be maintained!
• Switch 9, automatic alarm resetting:
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
This setting ensures automatic resetting of alarm
signals to external alarm devices and the built-in
buzzer. However, an alarm signal will only be reset if
the cause of the fault no longer exists.
At this setting, the alarm signal must be reset manually
by means of the reset button (the reset button is
described in section 4.5).
• Switch 10, automatic restarting:
When the DIP switch setting is changed, the controller must
be switched off for at least 1 minute!
This setting enables automatic restarting after the PTC
resistance/thermal switch of the motor has cut out the
pump. Restarting will not be carried out until the motor
has cooled to normal temperature.
When the pump connected is used in an explosion
hazard area, switch 10 must not be in this position!
At this setting, the pump must be restarted manually after
the PTC resistance/thermal switch of the motor has cut
out the pump. To restart the pump, push the ON-OFF-
AUTO selector switch into position OFF for a short period
(the ON-OFF-AUTO selector switch is described in
section 4.5).
When the pump connected is used in an explosion
hazard area, switch 10 must be in this position!
60 sec.
90 sec.
120 sec.
180 sec.
9