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FLOAT SWITCH
Reference
Name
1
Float switch
2
Float switch holder
3081690555 - Float switch kit (CE)
3081690557 - Float switch kit (CSA)
(Float switch kit for local retro fit assembly.)
Use the pump with a float switch if automatic starting
and stopping is required.
The pump starts if the float switch reaches an angle of
+45° and stops at an angle of -45°.
For continuous operation block the float switch verti-
cally, pointing upwards.
Note! For non CSA pumps with mo-
tor voltage above 400V, the float
switch kit must be complemented by
a step down transformer as the float
is not approved above 400V.
MOTOR PROTECTION PLUG
4
3
2
1
Reference
Name
1
Over current relay
2
On/Off switch
3
Indicator lamp for phase control
4
Plug with phase inverter
To protect the motor against over current it is strongly
recommended to use an external motor protector.
For pumps with 400V 50Hz- 3ph motor an external
motor protector can be ordered separately. It com-
bines the on/off switch and the overload protection in
one device, thus creating optimal operating comfort
and protection for the pump.
If the indicator lamp 3 is lighting red, reverse two
phases with a screw driver in plug 4.
9
After a fault the pump must be restarted manually
pressing the switch on the external motor protector.
SUPPLY CONTROL RELAY
The Sonora pumps can be equipped with a built-in
supply control relay.
Features
Pump protection, the pump will stop in case of:
• Wrong phase sequence.
• Phase failure
A pump equipped with a supply con-
trol relay will not start when phase
sequence is wrong, or in case of
phase failure. To start the pump
when phase sequence is wrong, shift
two of the three phases.
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