Galvanic Applied Sciences 943-TGX, Operation Manual

Page: 83 / 110

Revision 4 83 August 02, 2019
The oven compartment and all of its components are HOT (50ºC/120ºF).
Wear appropriate personal protective equipment (gloves, eye wear,
clothing etc) if working with hot surfaces or wait until surface have cooled
to safe temperatures before performing maintenance tasks.
The control cabinet door may NOT be opened while the analyzer is
energized UNLESS the area is known to be non-hazardous. Observe all the
warning labels on the analyzer enclosures.
g) Allow zero gas to flow for approximately five (5) minutes to remove all toxic gases from
the sample system.
h) Close the sample inlet valve V5, sample vent valve V3 and then Close the
Zero Air Flow
Control valve.
i) Remove the Fibre Optic Cables from both ends of the measurement cell. Carefully hang
the cables in a location where the ends of the cables cannot not make contact with
anything. It is recommended that the ends be covered with the orange protectors after
the fibres have cooled.
j) Loosen one of the cell tubing fittings to vent positive pressure zero gas that may be
trapped in the sample system.
k) To remove the measurement cell assembly, disconnect the three (3) interconnecting
tubing lines. These are:
• Sample Stream
•
Vent Stream
•
Zero / Purge Air
l) Remove the 6-32 x 3/8" screw securing the cell RTD to the cell block, using a 7/64" ball
driver. Carefully place the cell RTD behind the cell block where it will be out of the way.
m) Loosen the four (4) ¼-20 x 2" heater bracket mounting screws from the cell block face
using a 3/16" ball driver. Before removing the four (4) screws, place your fingers under
the cell block to catch the plate as you release the last screw.
Ensure that the sample and vent stream disconnections are made on the
cell side of the sample and vent block valves.