Pump products

burks APM-E Intelligent Variable Frequency Circulator Pump

Liquid temperature: +0 C to +110 C
Max. system pressure: 1.0 MPa
Protection class: IP42
Power supply: 1 x 230 V, 50/60 Hz
Product description: The burks APM-E intelligent variable-frequency circulator pump uses a canned permanent-magnet motor: leak-free and quiet. AUTO adaptive mode adjusts performance to the actual heat demand. For underflo
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Overview

The APM-E series intelligent high-efficiency circulator pump uses a canned (shielded) motor: the stator is fully shielded and the rotating parts run immersed in the pumped liquid, which also cools the motor and lubricates the bearings. Leak-free, quiet, energy efficient and easy to install, the pump is pre-set at the factory and suits underfloor heating systems, single-pipe heating systems and two-pipe heating systems.

From the manual: overview and operating conditions

Features

● Permanent-magnet motor, variable-frequency drive closely integrated with the motor, compact construction
● Low operating noise
● Adaptive control mode suitable for most applications
● Two differential-pressure control modes (proportional and constant pressure)
● Display shows actual power consumption P1 in watts (W)
● Automatic night mode
● Intelligent variable-speed frequency control
● Energy saving up to European Class A efficiency requirements

Technical data

Item	Data
Pumped liquid	Clean, thin, non-corrosive, non-flammable and non-explosive liquid, free of solid particles, fibres and mineral oil
Liquid temperature	+0 C to +110 C
System pressure	Max. 1.0 MPa
Protection class	IP42
Power supply	Single-phase 230 V, 50/60 Hz, voltage tolerance -10% to +6%
Model explanation	Example APM25-12-180E: 25 = nominal inlet/outlet diameter (mm), 12 = max. head (m), 180 = port-to-port length (mm), E = motor encapsulation mode

From the manual: control panel (AUTO adaptive mode / CS speed mode)

Control modes and fault codes

● AUTO (adaptive mode): automatically adjusts pump performance to the actual heat demand of the system, with self-learning function
● CS (speed control mode): speed stages set according to heat demand while the pump runs
● Fault codes: E1 over-current protection / E2 motor locked-rotor protection / E3 drive self-test failure / E4 abnormal supply voltage / E5 dry-run protection / E6 phase-loss protection (motor not connected or poor cable contact)