Internal connections - Grundfos UPS 15-60 CH Pump

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28 Oct 2014
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Location
Edinburgh
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United Kingdom
I need to know what exactly is switched by the three position switch on this pump.

Plug connections that I can trace without getting into the switch mechanism:

1 and 2 are strapped externally
3 unknown
4 capacitor
5 unknown
6 unknown
7 unknown
8 N and capacitor

The plastic switch actuator has broken off and I would like to simply hardwire the pump into its highest speed mode.

My intuition is that it is a single pole switch that switches L to 5, 6 and 7 in turn.

Can anybody confirm?

Alternatively, anybody got a spare switch assembly from a knackered pump?
 
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