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“ Motor runs too short ”

Resolution: A 4600 (4630/4640) not opening to a full 90 degrees could be caused by a couple things: The Opening Force could be set too low. Try increasing the opening force adjustment on the contr...:

How many Chexit devices can be operated from the PS914 power supply?

Resolution: Following information determine number of the Chexit devices that were shipped prior to 8-24-2015 from the factory with solenoid driven can be hooked up to a single Von Duprin PS873 or PS914 p...:

How do I identify the new QEL motor launched in 2012?

Resolution: The new QEL motor has a label affixed to the cover, the older QEL motor has no such label. See attached image.:

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“ Motor runs too short ”

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