HAKO Hakomatic B 1100, Сервисная книжка

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Foil 16
Before operation of the pre-sweeper (B1100 & B1100 PB 1230 only), the hood is to be
closed and the dirt hopper correctly inserted. The hood and the dirt hopper are
monitored each by a switch (NC switch) being serially connected. As soon as the
switch opens, the LED in the standard operator panel lights to signal „open hood“ and
the pre-sweeper function is disabled. Since both switches are serially connected, this
LED equally lights if the switch signalling „no dirt hopper inserted“ opens. In case of
faulty function, check the switch and all cable connections and connectors.
Another safety request is effected by the thermal switch of the broom motor. If this
switch opens, the pre-sweeper function will be disabled and an error code appears.
After engaging the parking brake, all cleaning functions will be disabled and the red
LED „brake engaged“ lights. This switch is an NC switch as well and it is thus
required, in case of faulty function, to check the switch, all cable connections and
connectors.
2.2.2 Initial Position/Release,
Lock Functions