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“
negative air pressure
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RELATED FAQS
Question
Answer
What is the minimum and maximum PSI applied to a 4800 operator?
Resolution:
The pneumatic operators are designed to function with an input air pressure to the 7901/7902 Series control box of 80 (min) 100 (max) PSI, and an output pressure of 60 to 80 PSI to the pneumatic (2...:
How do I get a Size 1 (ADA) closer to close against air pressure?
Resolution:
If an Size 1 (ADA) closer is set to 5 lbs. opening force, it will only have about 3 lbs. (60/70%) closing force. If the closer will not close against air pressure, but the ADA requirements have to ...:
What can be done for a door that will not close against wind pressure?
Resolution:
To correctly answer this question, we need to know how much more force is required to get the door closed. They could try turning the Rod & Shoe over (short side of shoe towards the hinge), or they...:
How are the solenoid air valves in the 7900 series control boxes marked?
Resolution:
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...:
Does LCN sell a coupler to stack two 4040XP closers together?
Resolution:
LCN does not recommend this type of installation, and has never sold a coupler to do this.:
What door meets FBC / NOA Zone 4 requirements?
Resolution:
H-Series doors in single leaf applications with only mortise locks meet the FBC / NOA Zone 4 requirements?3070 max flushOutswing & Inswing applicationsZone 4 requires 120 to 170 psf.: