Drum Compartment; Detailed Description - Honeywell 854 ATG Series Instruction Manual

5.3 Drum compartment

5.3.1 Detailed description

Figure 5.1 shows the cross-section of the drum compartment of the medium pressure version and identifies
the components. Figure 5.2 shows the chemical and high pressure version.
The drum shaft, mounted in the drum with a tolerance ring, is inserted into the magnet cap. Two carbon
PTFE bearings in the drum shaft bushing support the drum shaft. These bearings should be replaced when
repeatability deteriorates.
The drum shaft bushing is kept in position by a circlip. The drum shaft bushing is provided with an internal
thread which facilitates removal from the magnet cap.
Figure 5.1 Cross section of the drum compartment
854 ATG medium pressure version
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Figure 5.2 Cross section of the drum compartment
854 ATG High pressure version and
Chemical version
Maintenance