Drain Pump - Hanseatic WQP12-7311D Technical & Service Manual

Location of Drain Pump
Bottom view
The work principle
Drain pump consists of electrical motor, impeller, inlet and outlet.
Drain pump is a kind of pump driven by permanent magnet synchronous motor. The rotor is
made with permanent magnet material, the running inertia of rotor is very small, the stator
consist of silicon steel stack and coil. When the drain pump is on power, the rotor will be
very easy to start.
The defeat point
1. The motor coil is broken, so the drain pump can't work. It will cause the E2 , E4 or E1 error
.
2. The magnetism of motor rotor is weak, so drain pump cannot work. It will cause the E2, E4
or E1 error .
3. The connector is loose, so the drain pump can't work. It will cause the E2, E4 or E1 error .
4. The rotor is locked by residues, so the drain can't work . It will cause the E2, E4 or E1
error .
5.The drain pump assembly rack is loose, it will cause noise.
6.The non-return valve is bad, the remain water is too much.
Explanatory notes: failure of drain pump may cause E1, becaus
Technical data
Nominal voltage
Frequency
Resistance
Delivery height
Delivery performance

Drain Pump

The work principle
220-240VAC
50Hz
167 10%Ω
1M
≥17l/min(230VAC)
-> Theory of parts
Drain pump integrated into sump
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