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Clean the flowmeters
If the flowmeters become dirty or discolored, you can remove and clean the central glass tube.
For more information on cleaning the flowmeters, see www.kinginstruments.com.
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To clean the flowmeters
1. To remove the front shield, pinch the sides and carefully pull the front shield away from the
flowmeter.
2. Remove the black plug on the top of the frame.
3. Insert a 3/16 inch hex key in the outlet hole and into the compression screw.
4. Turn the hex key counterclockwise until the compression screw is raised enough to remove the
glass tube.
5. Carefully remove the glass tube, taking care not to lose the float.
6. To remove the float and float stops, insert a rod into one end of the glass tube and push the
components out the other end.
7. Clean the components with a mild soap solution.
8. To reassemble, reinsert the float and float stop, place the glass tube back into position, and turn
the compression screw clockwise. Make sure the rube is facing frontward. Tighten the
compression screw to 4 in. lbs. of torque. Snap the front shield back into place and replace the
black plug.
Thermo Scientific Modular Gas System User Guide 71
Maintenance