MAN0597 ISSUE 08 - 02/04
2302M5030
8. ROUTINE SERVICING
78
8. ROUTINE SERVICING
Apart from the maintenance described in Section 7. ROUTINE
MAINTENANCE the servicing requirements are limited to:
• Calibration
• Changing of the cartridge when required or indicated by the
instrument
• Replacing sensors in serviceable cartridges (i.e. non-
OFCH combinations where supported by the instrument)
8.1 SERVICEABLE CARTRIDGES
Instruments that support serviceable cartridges can have the
individual sensors replaced, instead of replacing the whole
cartridge.
The procedure is as follows:
(1) Switch the instrument off and remove the front cover.
(2) Unscrew the central cartridge screw and remove the
cartridge.
(3) On the underneath undo the two screws (1).
(4) Lever out the PCB from the locating tabs (2), on the two
sides adjacent to the screws. Retain the sensor retainer
(3) if fitted.
(5) Pull out the PCB.
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