Paco Mle Motors; Pumps Without Factory-Fitted Sensor; Pumps With Pressure Sensor; Settings - Grundfos LFE Instrucciones De Instalación Y Funcionamiento

11. PACO MLE motors

Grundfos E-pumps have standard motors with integrated variable
frequency drive. The pumps are for a single-phase or three-phase
power supply connection.

11.1 Pumps without factory-fitted sensor

The pumps have a built-in PI controller and can be set up for an
external sensor enabling control of the following parameters:
• pressure
• differential pressure
• temperature
• differential temperature
• flow rate
• liquid level in a tank.
From the factory, the pumps have been set to control mode
uncontrolled. The PI controller can be activated by means of the
Grundfos GO Remote or R100.

11.2 Pumps with pressure sensor

The pumps have a built-in PI controller and are set up with a
pressure sensor enabling control of the pump outlet pressure.
The pumps are set to control mode controlled. The pumps are
typically used to hold a constant pressure in variable-demand
systems or differential pressure in closed-loop applications.

11.3 Settings

The description of settings apply both to pumps without factory-
fitted sensor and to pumps with a factory-fitted pressure sensor.
Setpoint
The desired setpoint can be set in three different ways:
• directly on the pump control panel
• via an input for external setpoint signal
• by means of the Grundfos GO remote or wireless remote
control.
Other settings
All other settings can only be made by means of the Grundfos GO
Remote or R100.
Important parameters such as actual value of control parameter,
power consumption, etc. can be read via the Grundfos GO
remote or R100.
If special or customized settings are required, use Grundfos PC
Tool E-products. Contact Grundfos for more information.
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12. Installing the motor

The pump must be secured to a firm, raised concrete foundation
by means of bolts through the holes in the flange or baseplate.

12.1 Motor cooling

To ensure sufficient cooling of motor and electronics, observe the
following requirements:
•
•
•

12.2 Outdoor installation

When installed outdoors, the pump must be provided with a
suitable cover to avoid condensation on the electronic
components. See fig. 8.
Remove the drain plug pointing downwards in order to avoid
moisture and water build-up inside the motor.
Vertically mounted pumps are IP55 after removal of the drain
plug. Horizontally mounted pumps change enclosure class to
IP54.
In order to retain the UL/cUL approval, follow the
additional installation procedures on page 54.
Make sure that sufficient cooling air is available.
Keep the temperature of the cooling air below 104 °F (40 °C).
Keep cooling fins and fan blades clean.
Examples of covers
Fig. 8