Introduction
This user manual is the original user manual for the Pressure regulator M51 from Spectron Gas Control Systems GmbH, referred to as Spectron.
The pressure regulator series M51 includes the FM51, LM51 and PM51 series.
The user manual is intended to facilitate correct and safe operation for the operating firm, and to warn against misuse. It is intended for the qualified personnel and the operator of the facility.
WARNING

Incorrect operation
Incorrect operation of the system, e.g. due to instruction errors, can lead to personal injury or damage to the system.
- Access to the user manual by the operating and maintenance personnel must be absolutely ensured at all times.
- A copy of the system documentation including the user manual must therefore be kept either on the system or in a suitable and accessible location.
This user manual contains information protected by copyright law. It must not be photocopied, reproduced, translated or copied onto data carriers, either in full or in part, without prior authorisation. Spectron retains all further rights.