Setting The Stop Level; Setting The High Level; Stop Delay; Power-On Delay - Grundfos LC 242 Installation And Operating Instructions Manual

Dual pump unit
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1. Press and hold OK until the display and dry running start
flashing.
2. Continuously press OK until the indicator light for the start level
for pump 1 starts flashing.
3. Set the start level for pump 1 by using
the Up and Down buttons.
4. Press OK.
The indicator light for the start level for pump 2 starts flashing.
5. Set the start level for pump 2 by using
the Up and Down buttons.
6. Continuously press OK until the display stops flashing.
The settings have now been stored.

6.4 Setting the stop level

6.4.1 Setting the stop level with Grundfos GO Remote
The settings apply to analog sensors. For digital sensors, the
setting is automatically activated.
The stop level is the same for pump 1 and pump 2.
1. Go to Settings > Level control > Stop level
2. Set the stop level.
If you are using the same level for start and stop, re-
member to set a stop delay. This will prevent the pump
from starting and stopping too frequently.
6.4.2 Setting the stop level with the operating panel
The settings apply to analog sensors. For digital sensors, the
setting is automatically activated.
The stop level is the same for pump 1 and pump 2.
1. Press and hold OK until the display starts flashing.
2. Press OK once.
The current stop level is indicated on the display.
3. Set the stop level using the Up and Down buttons.
4. Continuously press OK to confirm all other settings and to exit
the setup.
If you are using the same level for the start and stop
level, remember to set a stop delay. This will prevent
the pump from starting and stopping too frequently.
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6.5 Setting the high level

6.5.1 Setting the high level with Grundfos GO Remote
For analog sensors:
1. Go to Settings > Level control > High level.
2. Set the high level.
For digital sensors:
1. Go to > Settings > IO modules
2. Select which terminal to configure.
6.5.2 Setting the high level with the operating panel
The settings apply to analog sensors
1. Press and hold OK until the display starts flashing.
2. Press OK four times. The current high level is indicated on the
display.
3. Set the high level using the Up and Down button.
For digital sensors, enable or disable the setting.
1. Press OK once to complete the setting.

6.6 Stop delay

The stop delay is the time from when the stop level is reached until
the pump stops. The stop delay prevents the pump from starting
and stopping too frequently and reduces water hammer in long
pipes.
6.6.1 Setting the stop delay with Grundfos GO Remote
1. Select Settings > Level control > Stop delay > State
2. Select Stop delay time.
3. Set the Stop delay time.

6.7 Power-on delay

With this function it is possible to delay the startup of the pump after
the power supply has been switched on. The purpose is to avoid
disturbing the main power network which could happen if several
pumps start up immediately when the power supply is switched on.
6.7.1 Setting the power-on delay with Grundfos GO Remote
1. Go to Settings > Power-on delay.
2. Set the function to Enabled.
3. Set the time delay.

6.8 Dry-running protection

If the pump is running and the liquid level in the tank or pit becomes
lower than the dry-running level, the dry-running protection will stop
the pump to ensure that it is not damaged.
Dry-running protection is dependent on a feedback signal from a
level sensor installed in the tank or pit.
6.8.1 Setting the dry-running level with Grundfos GO Remote
1. Go to Settings > Level control > Dry-running level.
2. Set the dry-running level.
The dry-running level must be set to a value which en-
sures that the pump is not damaged due to dry-run-
ning. The specific level depends on the installed pump
type. See the installation and operating instructions for
the product.
6.8.2 Setting the dry-running level with the operating panel
1. Press and hold OK until the display starts flashing.
2. Set the dry-running level using the Up or Down button.
3. Continuously press OK to confirm all other settings and to exit
the setup.

6.9 Multipump settings

The control unit enables start and stop of the two pumps alternately.
The pump with the lowest number of running hours is always
started first. The function ensures that the running hours of the
pumps are the same.
It is possible to set a time delay before the next pump is started.

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