12. Functions sequences
12
Service
manual
487 03 29 91
12.8
Stop after extraction
The machine will stop extracting in the following three cases:
• When the preset extractor time has elapsed (approx. 5 minutes).
• When the operator presses in the STOP button on the control panel.
• When the out of balance switch is activated.
The machine´s braking function on the circuit board (output S1:5) is activated after the
control circuit to extraction relay K1 (S1:4) has been broken. The control circuit for the
braking relay K2 is closed (interlock contact in K1 closed), after which K2 operates and
inverts the phase of the drive voltage to motor M1, Which thereby gains braking power.
When K2 operates, an interlock contact in the control circuit opens to relay K1 (extraction
relay) and prevents K1 from operating at the same time as K2.
When the logic circuit detects that the motor has stopped (rotation guard H1 (S4:2) and
SW2 (S1:7) have sent impulses), K2 is de-energised again and the machine is ready for
lid opening.
5
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