Stuart Turner TFL Automatic Flow Switch - Manual (Page 19)

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Flow Switch Circuit Test
1. First confirm visually that the flow switch reed clamp has not been dislodged during
handling or installation. The clamp must be fully located within its flow switch body
groove as shown.
2. To carry out the following test you will need to obtain a magnet, a typical fridge
magnet is suitable.
3. Ensure the power supply is switched on.
4. Position the magnet directly in front of the reed clamp as shown. If pump does not
start, then slowly move the magnet up and down to a position that exceeds the extent
of the reed clamp. The pump should instantaneously start at some point during this
extent of movement. If this does not happen, this indicates a possible fault with the
reed switch or the P.C.B which is located within the terminal box. These should be
checked electrically. Consult Stuart Turner for further instructions.
ENVIRONMENT PROTECTION
Your appliance contains valuable materials which can be recovered or recycled.
At the end of the products’ useful life, please leave it at an appropriate local civic waste
collection point.
Fig. 16
Groove
Body
Reed Clamp
Magnet