Intek 100FS - Manual (Page 12)

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SECTION 4 ! MAINTENANCE
4.1 GENERAL MAINTENANCE
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.
4.2 SPARE PARTS
There are no normally recommended spare parts to stock. The transducer and electronics are a
matched set and therefore are not interchangeable with others. Should a spare be needed, a complete
unit should be ordered and stocked.
If fuse replacement is ever needed, for AC powered units , use a Wickman part no. 3730500041 (½A,
fast acting fuse) or equivalent. For units powered by 24 Vdc, the fuse is a 1A, slow blow fuse and may
be replaced with Wickman part no. 3741100041 or equivalent.