Technical Information
83
G 5xxx
This pump has switched auxiliary windings which are additionally activated at
the moment of pump switch-on to raise the starting torque. In this state power
supply voltage is applied directly to the main winding and via the operational
capacitor to the auxiliary winding. During normal operation, the efficiency
factor is increased. The main winding is then switched to be in parallel with
the operational capacitor.
The winding changes are made via a changeover relay on the electronic
module.
At every switch-on, the changeover relay and the circulation pump starting
relay are supplied with power at the same time. The changeover relay
switches the windings with a time delay.
The circulation pump has thermal winding protection.
Figure 050-9: MPEW Circulation Pump
2.11 MPPW Circulation Pump (with Frequency Converter & Slide Shutter)
Circulation pump MPPW is fitted with a frequency converter and a slide shutter.
The MPPW pump can be adjusted in various ways, enabling improved noise
levels to be attained.
Higher speeds can shorten program duration, if required; see Turbo
Function, Section 080-2.4.
To achieve perfect wash results while also protecting the load, pump
pressures of varying strength are produced depending on the program. See
Table 050-1.
1 Slide shutter motor
2 Heater pressure switch
3 Heater elements
4 Motor connection
5 Capacitor
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