Nilfisk SC800 ST User Manual

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Service Manual: SC750, SC800, SC 750 ST, SC800 ST

Form Number 56043150 Page 64





The Main Machine Controller intenonally shuts down machine funcons in two stages if the baery voltage drops too

low. This is called “Low Voltage Cut Out”. It is done to preserve the life of the baeries. The rst stage of low voltage cut

out shuts o the scrub funcon by turning o the scrub brush motors and raising the brush deck. It also shuts o the so-

luon and detergent. The vacuum is sll allowed to run in order to recover soluon that is on the oor. The second stage

of low voltage cut out turns o the vacuum. Wet baeries and Gel baeries use dierent voltage thresholds.

Stage Threshold (volts) Shuts Down

Wet Baeries – 20.55 V

Gel Baeries – 21.75 V

Brushes, soluon, detergent and

raises brush deck

Wet Baeries – 20.40 V

Gel Baeries – 21.60 V

Vacuum



Typical baery run mes may be around 2-4 hours.

Battery Compartment Dimensions

Length = 24.5” (62.23 cm), Width = 14.25” (36.2 cm), Height = 14.25” (36.2 cm)

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Nilfisk SC800 ST Heavy-Duty Cleaning