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Instruction Manual
245364-V
May 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Replacement Parts 7-1
Model 755A
SECTION 7
REPLACEMENT PARTS
The following parts are recommended for
routine maintenance and troubleshooting of
the Model 755A Oxygen Analyzer. If the
troubleshooting procedures in Section 6 do
not resolve the problem, contact Rosemount
Analytical Customer Service Center (see
Section 8-1).
CAUTION
PARTS INTEGRITY
Tampering or unauthorized substitution of
components may adversely affect safety of
this product. Use only factory
documented components for repair.
7-1 CIRCUIT BOARD REPLACEMENT POLICY
In most situations involving a malfunction of a
circuit board, it is more practical to replace the
board than to attempt isolation and
replacement of the individual component. The
cost of test and replacement will exceed the
cost of a rebuilt assembly. As standard
policy, rebuilt boards are available on an
exchange basis.
Because of the exchange policy covering
circuit boards, the following list does not
include individual, circuit board mounted
components. If circumstances necessitate
replacement of an individual component,
which can be identified by inspection or from
the schematic diagrams, obtain the
replacement component from a local source
of supply.
7-2 SELECTED REPLACEMENT PARTS
809374 Fuse, Power 3/4A (120VAC)
092114 Fuse, Power 1/2A (240VAC)
777362 Fuse, Heater 3A 120VAC Pkg of 15
777361 Fuse, Heater 1.5A 240VAC Pkg of 15
861469 Thermal Fuse (F2,F3)
656189 Detector/Optical Bench Assembly 0 to
1%
656190 Detector/Optical Bench Assembly 0 to
1% Corrosion Resistant
616418 Source Lamp Kit
622350 Photocell
652225 Transducer Assembly
621023 Current Output Board (0 to 20mA, 4
to 20mA)
631773 Case Board
652220 Control Board