Intek 100CS with CE Marking - Manual (Page 10)

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SECTION 4 ! MAINTENANCE
The maintenance of the Model 100CS flow switch must be performed by qualified service personnel.
4.1 GENERAL MAINTENANCE
!! CAUTION: Prior to opening the electrical enclosure, service personnel shall be
properly grounded with an anti-static device to prevent damage to components
within the electrical enclosure.
Certain precautions should be taken to insure proper performance of all models of flow instruments.
Since the measurement technique involves a signal resulting from heat transfer to the flowing medium,
care should be exercised to prevent build-up of varying layers on the walls of the transducer. Layers
such as bacterial growth, dried paints, gas bubbles and non-solubles can result in measurement below
actual flow rates. Periodic checks and cleaning should be performed to insure a clean pipe or probe
surface.
It should be part of normal maintenance procedure to check the system for proper functioning.
Experience and other observable conditions should be utilized to determine the frequency of inspection.
To test the flow switch action, the flow rate should be reduced below (for low flow switch) or raised
above (for high flow switch) the switching level. Then check and insure relay action and continuity of
the shut down or warning circuits which it operates.
The joints of all intrusive probe tips should be inspected for wear and corrosion.
4.2 SPARE PARTS
The Model 100CS has no user serviceable parts, except for one replaceable fuse (Wickmann plug-in
fuse, part no. 3720250041). If spare parts are required, a complete unit should be ordered and stocked.