Technical Information
50
G1000 / G2000 Dishwashers
4.3.7
Spray Arm Sensing
Specific model dishwashers are equipped with a spray arm sensing system to alert
the operator that the spray arm is obstructed by a large dish, or utensil etc....
A spray arm sensor(s) is / are fitted on the water intake to monitor the middle and / or
lower spray arm(s) as shown in Figure 4-14. A small magnet is fitted on one end of
the appropriate spray arm.
Figure 4-14:
Spray Arm Sensor
The spray arm sensor is only monitored during a program in operation when the
circulation pump is activated.
The time period during which the spray arms are monitored is given by the electronic
control. If a fault is detected, it will be indicated but not saved in the fault memory.
The indication will be cancelled when the fault is remedied.
The minimum spray arm speed is approx. 5 rpm. Therefore approx. 12 sec. after the
start of the monitoring time, the next pulse should be registered.
The maximum spray arm speed is approx. 50rpm. Therefore after the start of the
monitoring time, the next pulse can only be registered at the earliest approx. 1.2 sec.
later.
If a fault is indicated, the indication will remain active even after the door has been
opened. To cancel the fault indication, the door must be closed again.
