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“
bolt wont extend
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RELATED FAQS
Question
Answer
What would cause the Von Duprin 88 series exit device latchbolt not to extend and the crossbar to droop?
Resolution:
The spring in the hinge case or end case assembly lifts the crossbar and both lever arms. If broken, the crossbar and lever arms will drop down. The weight of the crossbar and levers will automati...:
How do I wire an EL device to normally hold open the latch and release it during a fire alarm?
Resolution:
Use a normally closed fire alarm as the input to the power supply option board (PS873-2 or PS914-2RS), this will hold the latch retracted. During a fire alarm, the contact will open, dropping...:
What is a mechanical Lock?
Resolution:
A lock is any device which prevents access or use by requiring special knowledge or equipment. Mechanical locks are mechanical devices which secure an opening by keeping a door closed until a rel...: