DAB VB 35/120 Handleiding voor installatie- en onderhoudsinstructies - Pagina 8
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Speed adjustment, on pumps provided with the necessary device, is accomplished by turning
the three position switch, even when the motor is live.
In twin pumps, simultaneous operation must be at the same speed.
FIG. 12
MAINTENANCE :
The circulator does not require any maintenance.
At the start of the winter season, ensure that the motor shaft is not blocked.
FIG. 13