Documentation / Downloads
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Operating instructions, wiring diagrams and technical documentation – organised by application and available as individual files without signing in.
These are the established manufacturer documents. Original units, dimensions, currencies and device revisions are retained in the files; check the document’s revision and reference conditions before use.
Create a data archive
Our support team frequently needs a data archive to analyse an issue quickly. These instructions explain how to prepare the full data set or individual months for sending.
Creating a data archive for support
Archive the full data set or monthly data and prepare it for sending
PDF · 45 KBENDownload
Controllers
EASY: serial number 0601 · MASTER 4: serial number 2404, from August 2022. For CN, also check the year of manufacture and software generation; the matching manual may be in the archive.
EASY · Operating instructions
Version 3.4 · February 2025 · Operation, setup and connection
PDF · 32.2 MBENDownloadEASY · Technical description
Technical specifications and system overview
PDF · 2.5 MBENDownloadMASTER 4 · Operating instructions
August 2022 · From the MASTER 4 documentation package
PDF · 2.7 MBENDownloadMASTER 4 · Electrical documentation
Dimensions, terminal assignments and connection diagrams
PDF · 3.8 MBENDownloadMASTER 4 · Control cabinet wiring diagram
August 2022 · Additional control cabinet documentation
PDF · 1 MBENDownloadMASTER 4 · Operating instructions supplement
VSD control, fixed-speed compressors, manual operation and alarm reports
PDF · 663.4 KBENDownloadMASTER 4 & CN · Functional description
Control, pressure band, schedules, sensors, data storage and integration
PDF · 5.8 MBENDownloadCN · Special wiring diagram
Compressor Network · Check compatibility with your device before use
PDF · 195.1 KBENDownload
Installation & sensors
Cross-controller documentation for planning and installation. Wiring and modifications must be carried out by qualified personnel only.
Example wiring diagrams & cable specifications
Example connections; always verify terminal designations on the actual compressor
PDF · 3.8 MBENDownloadInstalling accessories and sensors
Sensors, heat meters, current/power measurement and connection modules · February 2020
PDF · 9.5 MBENDownloadDP10 differential pressure transmitter · Product documentation
Technical data, installation, dimensions and electrical connection · 8 pages · January 2018
PDF · 1.1 MBENDownload
Interfaces & networking
Export data, integrate external sensor readings and extend the Airleader bus.
OPC UA Server
Provide Airleader data to higher-level systems
PDF · 247.7 KBENDownloadModbus address list
Version 3.00579 · Editable Excel file
XLSX · 53.3 KBENDownloadModbus TCP / RS485 · Data output
Read Airleader data through the Modbus interface
PDF · 672.2 KBENDownloadModbus Extension TCP / RTU · Sensor data
Integrate external measurements into the Airleader controller
PDF · 322.3 KBENDownloadExtending the RS485 bus over Ethernet
Connect the Airleader bus through an IP network
PDF · 250 KBENDownloadExtending the RS485 bus over fibre
Bus connection using fibre-optic cables
PDF · 269.8 KBENDownload
Visualisation, data & IT
Use web visualisation, create flow diagrams with live readings and plan IT integration.
Web visualisation · MASTER 4 / MASTER II
Manual version 4.000 · From the MASTER 4 documentation package
PDF · 2.9 MBENDownloadPanel Designer
Flow diagram with live readings · From visualisation version 3.5
PDF · 634.7 KBENDownloadIT security documentation
Network and security concept · July 2025
PDF · 213.8 KBENDownload
Measurement case & analysis
Manuals for both measurement-case generations, MSS software and measurement-point templates.
Touchscreen measurement case · Operating instructions
Analogue measurement case Touch · Version 1.0
PDF · 1.8 MBENDownloadLCD measurement case · Operating instructions
Earlier device generation with integrated data logger
PDF · 4.5 MBENDownloadMeasurement and simulation software · MSS 3.1
Manual · December 2025
PDF · 2.1 MBENDownloadMeasurement record / channel assignments · Excel
Editable template for sensors and measurement points
XLSX · 8 KBENDownloadMeasurement record / channel assignments · PDF
Printable template for on-site documentation
PDF · 121.9 KBENDownload
Brochures & presentations
Product overviews and background on compressor management, measurement and compressed-air audits. Older brochures may differ from today's product range.
Airleader · MASTER II+ product brochure
Overview of the MASTER II+ generation
PDF · 903.2 KBENDownloadAirleader MASTER · Product brochure
Historical compressor-management brochure
PDF · 2.2 MBENDownloadMeasurement case · Brochure
Universal analogue measurement case and data logger
PDF · 1.7 MBENDownloadMeasurement, compressed-air audit & analysis
Flyer about the measurement case, analysis and savings potential
PDF · 8.4 MBENDownloadGSM measurement case · Professional AirAudits
Presentation of the measurement system and its practical use
PDF · 14.3 MBENDownload
Archive · earlier controller generations
MASTER II+: 2403, January 2019–July 2022 · MASTER II: 2402, August 2017–December 2018 · MASTER: 2401, 2006–May 2018. The original website also refers older CN systems to these documents. Check the manual, software version and device serial number before use.
MASTER II+ · Operating instructions
Serial number 2403 · Also for matching CN generations according to the original site
PDF · 2 MBENDownloadMASTER II / II+ · Electrical documentation
From the MASTER II+ package · Document title: MASTER II
PDF · 2.1 MBENDownloadWeb visualisation · MASTER II / II+
From the MASTER II+ package · Version 4.000, October 2017
PDF · 3.4 MBENDownloadMASTER / MASTER II · Operating instructions V3
Legacy package linked for both models on the original site · Document dated December 2009
PDF · 9.6 MBENDownloadWeb visualisation · MASTER V3
Version 3.006 · December 2009
PDF · 2.8 MBENDownloadMASTER / CN · Direct PC connection
Single-PC solution without a network
PDF · 477.6 KBENDownload
Documents provided by WF Steuerungstechnik GmbH, compiled on 21 September 2026. Each document's own revision applies. BAFA documents are not included here.