UL 104-2007 pdf download.Elevator Door Locking Devices and Contacts. 4 Operation 4.1 Hoistway-door interlocks 4.1 .1 An interlock contact shall be positively opened by the locking member or by a member connected to and mechanically
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UL 104-2007 pdf download.Elevator Door Locking Devices and Contacts. 4 Operation 4.1 Hoistway-door interlocks 4.1 .1 An interlock contact shall be positively opened by the locking member or by a member connected to and mechanically
Read more