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REPLACEMENT AND CLEANING OF PHOTOMETRIC COMPONENTS
24 - 6
ETC00781(4) Series 100 e 02/2004
24.4 Chopper Replacement
P Open the analyzer housing (cf. chapter 23).
P Take the photometer assembly out of the analyzer housing (see chapter 24.1).
P Remove the light source(s) from chopper housing (see chapter 24.2).
P Remove the analysis cell(s) from chopper housing (see chapter 24.3.1).
P Remove the analysis cell(s) from chopper housing (see chapter 24.3.1).
P Reinstall the analysis cell(s) to new chopper housing (see chapter 24.3.3).
P Insert the light source(s) to new chopper housing (see chapter 24.2).
P Reinstall the photometer assembly (see chapter 24.5).
24.5 Reinstalling of the Photometer Assembly
P Insert the photometer assembly into the analyzer housing and fasten in position using
the mounting bracket screws (Fig. 24-1, Item 1).
P Only analyzers with gas detector:
Insert preamplifier (Fig. 3-2, Item 5) to holding device (Fig. 3-2, Item 4).
P Reconnect all gas lines to the assembly.
P Reconnect all electrical connections between the photometer assembly and the electronic
unit (see chapter 18.).
P Perform a leakage test (see chapter 22).
P Perform the physical zeroing procedure (see chapter 24.6).
CHOPPER REPLACEMENT / REINSTALLING OF THE PHOTOMETER ASSEMBLY