Upgrade Description; Intended Users; Safety And Certification Information - Siemens Maxum II Service Manual

3.1

Upgrade Description

This section describes the procedure to replace the original Flame Photometric Detector (FPD)
in the Maxum II with a newer version FPD. This involves replacing the FPD assembly, called
FPD I, with the new FPD assembly, called FPD II. The existing light pipe and photomultiplier
tube from the FPD I will be reused. It will be necessary to power down the analyzer for this
procedure.
The Flame Photometric Detector (FPD) is a selective detector that can detect sulfur based on
the emission of light during combustion. In 2007 a new version of the FPD was released for
the Maxum II. The original version is now known as FPD I. The new version is called FPD II.
The FPD II is a more sensitive and more consistent detector than the FPD I.
3.2

Intended Users

This procedure is intended for either Siemens personnel or for highly skilled users who have
been trained by Siemens to perform this type of procedure. Users of this procedure must have
strong working knowledge of the safety systems of the Maxum II analyzer and have the
knowledge to safely power the analyzer down and back up. Users must also have a good
working knowledge of the Maxum II hardware and should be very familiar with the operation
and day to day maintenance of the analyzer.
This procedure involves replacement of the Flame Photometric Detector which may impact
the safety protection of the analyzer. This procedure should only be executed with the approval
of applicable local safety personnel and/or the local authority having jurisdiction.
3.3

Safety and Certification Information

This retrofit may impact the safety protection of the analyzer. This procedure involves a retrofit
of the Flame Photometric Detector (FPD). The FPD is an explosion-proof device that is
equipped with required safety systems. It is important that these safety systems not be
compromised. All instructions and warnings in this procedure must be followed.
Maintenance work on the Maxum II analyzer should only be performed when the area is known
to be safe for the work to be done.
Note
This procedure must only be executed with the consent and approval of all applicable local
safety personnel and/or the local authority having jurisdiction.
Conditions for Safe Use per ATEX Certificate
● The FPD shall be protected against mechanical damage by mounting inside another
enclosure.
● The relative maximal pressure existing inside the flameproof enclosure shall not exceed
0.065 bar.
Maxum Edition II Detectors
Service Manual, May 2018, A5E42019847001
Flame Photometric Detector
3.3 Safety and Certification Information
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