1. General information
Observe the instructions of optional components of the product.
Observe the material safety data sheet of the dosing medium.
Observe the installation and operating instructions supplied with the AR control unit, Servomotor
or VFD in addition to the instructions in this manual.
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Related information
• 11.1 Diaphragm leakage sensor
• 11.2 Variable frequency drive (VFD)
1.1 Qualification and training
The persons responsible for installation, startup and service must be appropriately qualified for
these tasks.
If the persons do not have the necessary knowledge, training and instruction must be given. If
necessary, training can be performed by the manufacturer or supplier on request.
Read this document before you install the product. Installation and operation
must comply with local regulations and accepted codes of good practice.
AR control unit:
http://net.grundfos.com/qr/i/91834764
Servomotor:
http://net.grundfos.com/qr/i/95721057
VFD supplier manual: https://www.nord.com.
DMX 221 | General information | 4