RWH-FL01 Float Switch
www.RainWaterHarvesting.co.uk
©
2010
1
FLOAT SWITCH
Product ID: RWH-FL01
INSTALLATION INSTRUCTIONS
The float switch can be wired either to turn a pump off or to turn a pump on. Identify
your application first, before proceeding to connecting the wiring. Correct connection of a
float switch does require electrical knowledge and expertise.
E)
SECURING AND ADJUSTING THE FLOAT SWITCH
The float switch must be mounted in the tank or water source so that it can rise or fall
with the water level and turns off or on at the correct level. Before fitting, tip the float
switch up and down, listening to the gravity switch moving inside the body, in order to
satisfy yourself of the angle at which the switch moves. Secure the cable some distance
from the float switch by one of two methods:
i)
If a bulkhead or downpipe is available in the water source, secure the float switch
cable to it with a nylon tie wrap or similar. Only drill a hole in the bulkhead or downpipe
for the tie wrap if drilling does not compromise the water tightness of the tank.
The diagrams show this mounting
method, with float switch cable
attached to a 4 inch downpipe in
a storage tank by nylon cable tie
or similar. On the left, float switch
is free to float in the presence of
water and has turned a pump ON
or OFF depending on wiring. On
the right, float switch can flip to
the other electrical position (OFF
or ON) as the water level drops to “empty”
ii)
If no such solid mount is available, the cylindrical counter weight (supplied with
the float switch) can be used as an anchor, below which the float switch cable flexes.
Peel the plastic ring off
the counterweight and
place the ring round the
float switch cable below
the weight. Thread the
cable through the weight
so it hangs on the ring.
Secure the cable in the
right position at the top of
the tank securely but making sure that the insulation of the cable will not rub and break
(risk of short circuit).
iii)
In either mounting method i or ii, adjust a) the position of the tie wrap or
counterweight anchor and b) the length the cable after this point so that the float switch
turns the appliance on or off at the correct water levels.
