Instruction Manual
748441-D
April 2002
Rosemount Analytical Inc. A Division of Emerson Process Management
Maintenance and Service 5-3
Model CAT100
a. Analyzer
Removal
1. Refer to drawing 659921 for location
of components.
2. Remove only the dome housing from
the extender ring.
3. Mark the location of the screws on
each analyzer mount using a fine tip
marker. It is important that the ana-
lyzer be replaced in the exact same
location so that the light guides touch
the inside of the glass window.
4. Loosen, do not remove, the screws
(17) holding the swing tab (14) on
each analyzer mount (2) and swing
the tab clear of the slot.
5. Loosen, do not remove, the six
screws (23) holding the analyzer.
6. Slide the analyzer forward being care-
ful of the umbilical cables and gas
lines attached.
7. Disconnect all electrical connections
and gas lines and remove the ana-
lyzer component for repair or re-
placement.
8. Close all gas line fittings with PVC
caps after removal of the analyzer.
b. Analyzer
Replacement
1. Slide the analyzer onto the mounts,
being careful that the screws and
washers are on the outside.
2. Locate the analyzer in the exact same
location as when removed by aligning
the screws with the alignment marks
previously made.
3. Tighten
the
screws.
4. Make sure the dome threads are
clean and free of any contaminants.
5. Replace the dome housing, by lining
up the reference marks so that the
threads engage properly. If any resis-
tance is felt, remove the dome and
clean the threads.
6. Make sure that the spring loaded light
guides just touch the inside of the
glass window. Failure to have the light
guides touching the glass window can
result in spontaneous menu naviga-
tion.
c.
Power Supply Assembly Removal
1. Follow the process for analyzer re-
moval in Section 5-2a (page 5-3).
2. Disconnect all wires from the power
supply terminal block.
3. Loosen, do not remove, the three
screws (17) holding the power supply
assembly.
4. Slide the power supply assembly in its
slotted holes and remove.
5. Reverse the process for installation.