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A1-8 MAINS SWITCH MONITORING
To ensure a defined ON/OFF sequence for the system, the position of the mains switch Q1 is eval-
uated via a contact on 13,14. The unit does not start unless the contact is closed. Then a fault
indication (amber LED comes on) is displayed on the front panel with no display message (blank
display). LED3 on A1 comes on.
NOTES:
a1-8.pcx
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