SVC 4-24
29. Lift the base up enough to expose the heated
block, heater and sensor cartridge wires.
30. Carefully slide the two cartridges out of the
block. (The smaller of the two cartridges is the
sensor and must be handled gently in order to
prevent breakage.)
31. If a PCOC fan is installed, remove the back cov-
er of the instrument by removing four screws
and sliding the cover off of the rear of the in-
strument.
32. If installed, remove the PCOC fan cover to allow
removal of the tubing attached to the detector
weldment.
33. Trace the hydrogen and air inlet tubes, at-
tached
to the detector weldment, to their appropriate
connection at the flow manifold block (exposed
left side of the instrument). (The specific desti-
nations of the two tubes depends upon the
function of each tube, and upon whether the
detector base is located in the “ A” or “B” detec-
tor position.)
34. Disconnect the tubes by removing the tube outlet
fitting plate from the manifold block.
When bending tubing, do not make sharp
bends which may crimp the tubing.
35. Prepare the replacement detector weldment by
bending its tubes until they are oriented similar-
ly to those on the weldment just removed.
36. Position the replacement detector over the
opening where it is to be installed.
COOLING
FAN
FAN
SHROUD
FLOW
DIRECTION
ARROW
SCREW
FLOW
MANIFOLD
TUBE OUTLET
FITTING PLATE
SENSOR
HEATER
HEATED
BLOCK
BASE SPANNER NUT
JET
INSULATION
PLATE
THERMAL STRAP
Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com
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