
FLOAT SWITCH
FLOAT SWITCH
Model No: PFS-1
Part No: 7950826
Thank you for purchasing this Clarke Float Switch, which is simple to install, and
designed for trouble free operation for a long life.
The FS-1is a plastic float switch moulded to 3 core cable. Actuation is via a roller
ball and micro-switch arrangement within the switch thereby eliminating all heavy
metals.
GUARANTEE
This product is guaranteed against faults in manufacture for 12 months
from date of purchase. Keep your receipt as proof of purchase.
This guarantee is invalid if the product has been found to have been
abused or tampered with in any way, or not used for the purpose for
which it was intended. The reason for return must be clearly stated.
This guarantee does not affect your statutory rights.
TECHNICAL SPECIFICATION
Model No: PFS-1
Part No: 7950826
Thank you for purchasing this Clarke Float Switch, which is simple to install, and
designed for trouble free operation for a long life.
The FS-1is a plastic float switch moulded to 3 core cable. Actuation is via a roller
ball and micro-switch arrangement within the switch thereby eliminating all heavy
metals.
GUARANTEE
This product is guaranteed against faults in manufacture for 12 months
from date of purchase. Keep your receipt as proof of purchase.
This guarantee is invalid if the product has been found to have been
abused or tampered with in any way, or not used for the purpose for
which it was intended. The reason for return must be clearly stated.
This guarantee does not affect your statutory rights.
TECHNICAL SPECIFICATION
Contact rating: 230V - 15A (non-inductive)
230V - 10A, (inductive)
Max. temperature: 70°C
Cable Length 2M
Contact rating: 230V - 15A (non-inductive)
230V - 10A, (inductive)
Max. temperature: 70°C
Cable Length 2M

METHOD OF OPERATION
The microswitch assembly inside the float, axially mounted in line with the weight,
changes contacts according to the float’s position - see diagram. Therefore as
the liquid level drops or rises slowly, a pump or flow control suitably connected
can be switched in or out to maintain an average level of the liquid. By
connecting only one side of the switch, the unit can be also used to fill or empty
the tank as required.
METHOD OF OPERATION
The microswitch assembly inside the float, axially mounted in line with the weight,
changes contacts according to the float’s position - see diagram. Therefore as
the liquid level drops or rises slowly, a pump or flow control suitably connected
can be switched in or out to maintain an average level of the liquid. By connecting
only one side of the switch, the unit can be also used to fill or empty the tank as
required.
MOUNTING
Whilst no hard and fast rules apply to the mounting of these units, the lead should
be supported in an enclosed vessel, and in an open vessel it is advantageous to
clip the lead to the side, especially if excessive turbulence is experienced.
To obviate the effects of rapid switching conditions that would result if such
turbulence is experienced, it is advantageous to use a maintaining circuit which
both safeguards the microswitch and cuts out any chatter in the starters of
associated pumps etc.
ELECTRICAL CONNECTIONS
Connect the BROWN lead to the COMMON/NEUTRAL connector and the other
leads as follows:
A. To drain a pit/sump etc.,
• Connect the BLACK lead to the LIVE connector.
B. To Fill a tank
• Connect the BLUE lead to the LIVE connector
Ensure any connector
boxes in close
proximity of water are
fully waterproofed.
If in any doubt,
regarding electrical
installation, consult a
qualified technician,
DO NOT attempt to
carry out the
installation yourself.
MOUNTING
Whilst no hard and fast rules apply to the mounting of these units, the lead should
be supported in an enclosed vessel, and in an open vessel it is advantageous to
clip the lead to the side, especially if excessive turbulence is experienced.
To obviate the effects of rapid switching conditions that would result if such
turbulence is experienced, it is advantageous to use a maintaining circuit which
both safeguards the microswitch and cuts out any chatter in the starters of
associated pumps etc.
ELECTRICAL CONNECTIONS
Connect the BROWN lead to the COMMON/NEUTRAL connector and the other
leads as follows:
A. To drain a pit/sump etc.,
• Connect the BLACK lead to the LIVE connector.
B. To Fill a tank
• Connect the BLUE lead to the LIVE connector
Ensure any connector
boxes in close
proximity of water are
fully waterproofed.
If in any doubt,
regarding electrical
installation, consult a
qualified technician,
DO NOT attempt to
carry out the
installation yourself.