WHAT NEGATIVE PRESSURE CAN AAN AUTO OPERATOR OVERCOME

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LCN does not recommend this type of installation, and has never sold a coupler to do this.
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...
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 ...
The capabilities of the auto operator and the required operation of the opening will affect the selection of a power supply.
The 900-4RL has two out put for EL devices and signals to the auto operators to open the doors. PS914 power supply is required with 900-4RL option board to operate the EL device and auto operato...
Von Duprin PS914 x 900-4RL supports two EL with two auto operator.
Chexit devices are NOT electric latch retraction.  In order for Chexit device to operate with an auto operator you will need to add a rim electric strike on a single door or a pair o...