Testing The Product; Product Introduction; Product Description; Intended Use - Grundfos LC 241 Manual Del Usuario

3.7 Testing the product

When you have made all the electrical installations and completed
the startup wizard, you can test the system.
For emptying applications:
• Fill the pit with water, and check that the pump starts
automatically at the defined level.
• Test the dry-running protection by starting the pump manually,
and wait while the pit with the pump is emptied. Check if the
control unit activates an alarm and stops the pump when the
defined level is reached.
• Test the high-level by stopping the pump manually, then
continue to fill the pit with water. Check if the control unit starts
an alarm and stops the pump when the defined level is
reached. Set the pump to Auto, and observe that the pump
starts and stops when the stop level has been reached.
For filling applications:
• Start by draining the tank to be filled. When the tank is empty
and the start level is reached, the pump must start. When the
tank is full and the stop level is reached, the pump must stop.
• Test the high-level function by stopping the pump manually,
and continue to fill the tank without the pump with water. Check
if the control unit starts an alarm and stops the pump when the
defined level is reached.
• Test the dry-running protection by starting the pump manually,
and wait while the tank with the pump is emptied. Check if the
control unit starts an alarm and stops the pump when the
defined level is reached. If the pump is placed in a well, this
test may not be possible since the pump cannot empty the
well. Alternatively, pull the dry-run level switch to simulate a
dry-run situation. The same can be done with a submersible
pressure level sensor.

4. Product introduction

4.1 Product description

The level-control unit switches the pump on and off according to the
liquid level measured by float switches or a pressure sensor. When
the start level is reached, the pump starts, and when the liquid level
has been lowered to the stop level, the pump is stopped by the
control unit. An alarm is indicated in case of, for example, high-
water level in the tank or liquid level sensor failure.
Basic settings are configured via the operating panel, and advanced
settings are configured with Grundfos GO Remote. Furthermore,
you can read important operating parameters with Grundfos GO
Remote.

4.2 Intended use

The control unit is designed to control either one or two pumps
The product can be configured for two purposes: emptying a
wastewater pit or filling a pit or tank. The product can be used for
network pumping stations, main pumping stations, commercial
buildings and municipal systems.
If the product is used in an explosive environment, follow local
regulations. If required use additional equipment.
The product must not be exposed to strong solvents or oil
containing liquids.

4.3 Features

The control unit features among others the following functions:
• support of up to two pumps
• manual and automatic control of the pump
• Bluetooth pairing with Grundfos GO Remote
• operating indication, such as power on and pump running
• alarm and warning indication, such as power phase missing
and high-water level
• motor and phase failure protection
• setting of stop delays matching the actual operating conditions
• automatic alternation of pumps.
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