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Grundfos Pump UPMXL

Grundfos Pump quality assured – UPMXL 25-124, 230 V, with PWM modulation signal, 180 W, UL/cUL certified for precision control.

Description

Introduction

UPML and UPMXL pumps for the North American market are UL and cUL approved. The type key is designed for the precise identification of the product and not for configuration purposes. It can be found on the product packaging. This Pump Model Number is UPMXL 25-124 165F PWM 180W US 230V GFD.

Pump Range/Type: UPM XL
Nominal Inlet and Outlet Diameter: DN25
Maximum Head (Dm): 124
Port to Port Length: 165 mm (4.19″)
Cast Iron Housing with 2-blot flanges
External Control Signal: PWM (if absent Pump runs at full speed)
Nominal Power Consumption: 180 Watts
Power Supply: 220-240V/1Ph/60Hz

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Installation Position

The pump must always be installed with horizontal motor shaft within ± 5 °. The pump should be installed in the system in such a way that no major amount of air flowing through the pump or gathering in the pump housing will affect the pump when it is out of operation. If, in addition, a check valve is installed in the flow pipe, there is a high risk of dry running as the air cannot pass the valve.

The pump is designed to be installed pumping upwards or downwards.
Arrows on the pump housing indicate the liquid flow direction through the pump.
if the pump is installed horizontally, the conduit box must point downwards. Be aware that the pump connection, flange or union nut, might interfere with the control box.

When making pipe connections, follow the piping manufacturer’s recommen

Insert the check valve, if required.
Refer to the arrows on the pump housing that indicate the direction of the liquid flow through the pump.
Install the pump with horizontal motor shaft.
Fit gaskets to the pump ends.

PWM Signal & Wiring

GRUNDFOS UPML and UPMXL PWM circulators are controlled via a digital low-voltage pulse-width modulation (PWM) signal which means that the speed of rotation depends on the input signal. The speed changes as a function of the input profile.These communication signals are standardized in the VDMA Einheitsblatt 24224 “Wet runner circulating pumps – Specification of PWM control signals”.

Digital low-voltage PWM signal

The square-wave PWM signal is designed for a 100 to 4000 Hz frequency range. The PWM signal is used to select the speed (speed command) and as feedback signal. The PWM frequency of the feedback signal is fixed at 75 Hz in the pump.

Duty cycle: d % = 100 x t/T