Electrical Connection - Operation; Thermal Switch - Overheat Protection; Running Dry - Westfalia 81 77 21 Instruction Manual

6. A retainer clamp (2) is located on the side of the carrying handle. It serves the
purpose of fixing the line of the float switch. Fix the float switch so that its
leading edge "solidly" touches the ground.
7. Run the vacuum hose. Observe the maximum delivery height (refer to the
Technical Data).
Electrical Connection – Operation
Turning the pump on and off is done via the integrated float switch (4). The pump
automatically switches off if the unit is unplugged of if water level falls below a
specified height.
1. Insert the power plug into a protected socket.
2. Pumping will start automatically as soon as the pump is plugged and the float
switch (4) lies horizontally on the water.
If the water level falls below 7 cm the pump will switch off automatically. This
will effectively prevent the pump from running dry. If the water level rises
again above a certain level and the power cord is still plugged in, the pump
will automatically turn on and start pumping.
3. Pull the power plug to turn off the pump. Make sure that no particles bigger
than approx. 35 mm get sucked as this can block the turbine wheel.
Thermal Switch – Overheat Protection
The pump is equipped with an automatic thermal protection, which prevents
damage to the pump caused by overheating. If the pump becomes too hot during
operating, it will automatically switch off. Pull the plug of the pump and allow the
pump to cool down for approx. 30 minutes before operating again.

Running Dry

Absolutely avoid dry running of the pump! Dry running is operating the pump
without water in the casing.
Using
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