FAQs

Question
Answer
The QEL exit devices that were shipped prior to August, 2012 will only communicate to the PS873 with 871-2Q option board or PS900 series with 900-2Q option board. If you...
Yes, an automatic operator can be installed on a Dutch door. The operator must be installed on the top leaf of the Dutch door. Only the top half will open unless the top and bottom leaves (se...
Electro-hydraulic Automatic Operators are: Designed for manual opening applications where there is occasional need for automating the door to meet ADA requirements.  Electrically powere...
The valve on the back of a 4041/4040XP closer is a "Back Check Selector Valve" that needs to be turned in on "Parallel Arm" mount applications ONLY. If a 4041/4040XP closer mounted "Top Jamb", or "...
Valve used to provide proper backcheck location for 4040XP and 4050 parallel arm mounting
How to:  What are the steps to adjust a door closer?Facts: All LCN and FALCON door closers will have 3 regulating valves and a spring adjustment.  All closers with a "Delay" feature ...
The part number for the solenoid air valve in the 7900 Series control boxes are: 7901/ES7901 - part# 941 - marked A 7902(S)/ES7902(S) - part# 942 - (2 valves) marked A and B 7949/ES7949 - part...
The regulation valves are designed to adjust the flow the hydraulic fluid in the closer which regulates the door closing speed through various phases of the closing cycle. The regulation valves h...
The Von Duprin EL33A/35A/98/99 devices can be converted to the QEL devices by getting correct sized QEL conversion kit and a 900-2Q option board for the PS914 power supply. 3' Conversion Kit #05...
The attached table shows the part numbers for LX-RX and LX-RX-LC switches field installed.