en
20 WILO SE 2021-01
NOTICE
Check the inlet quantity!
The maximum inlet volume flow must be less
than the maximum pump delivery rate. If the in-
let quantity is higher, the pump will not be able
to pump away the volume flow. The pump
chamber may overflow!
6.1 Before activating
Check the following prior to activation:
ƒ Has the electrical connection been carried out in accord-
ance with regulations?
ƒ Has the connection cable been routed safely?
ƒ Can the float switch move freely?
ƒ Temperature of the pumped fluid observed?
ƒ Immersion depth observed?
ƒ Are the pressure pipe and pump sump free of deposits?
ƒ All gate valves in the pressure pipe open?
6.2 Switching on and off
The pump is switched on and off depending on the version:
ƒ Pump with plug, without float switch
The pump will switch on immediately after the plug has
been inserted into the socket. To switch off the pump,
pull the plug.
ƒ Pump with plug and float switch
The pump will switch on and off automatically on reaching
the switching level:
– Upper floater: Pump on.
– Lower floater: Pump off.
ƒ Pump with bare cable end (without plug)
Switch the pump on and off via a separate control. Read
the installation and operating instructions for the control
unit for further details.
6.3 Test run
If the pump is installed stationary (e.g. cesspool, overflow
shaft), carry out a test run. Check the basic conditions (feed
quantity, switching points) with the test run. The test run
must include three pump cycles.
1. Flood the pump chamber: Open inlet.
NOTICE!The required feed quantity for the test run
can also be simulated using another water source.
2. When the switch-on level is reached: pump starts.
3. Switch-off level reached: pump stops.
4. Repeat two more pumping processes.
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