Single Gas Instrument Service Manual
Page 8
Bacharach, Inc.
Instruction
0019-9166
Figure 2-3.
Chamber As-
sembly, Exploded
View
Figure 2-3A.
Fan-blade assem-
bly set screw
a. If disassembled, push the Fan Assembly onto the Motor shaft until it seats
(Fig 2-3).
Be sure the set screw
(Fig 2-3A)
is not screwed in so far that it
prevents the adapter from seating fully.
Tighten the set screw to approxi-
mately 32–40 ounce-inches using the .05 in. Allen wrench. Spin the Fan
Assembly to be sure it will run in the chamber.
b. Mate and secure the Chamber and Motor Assembly together with the
two screws and nuts removed in Step 3 (Tighten to 16–20 oz. in.).
8. Reinstall the Membrane (mesh side toward the chamber assembly), O-ring,
and Sensor on the chamber assembly (Fig 2-2); then secure the Sensor using
the three screws and nuts removed in Step 2 (Tighten to 4–8 oz. in.).
9. Close the case as per Section “2.2 Closing the Case.”
