el device does not work

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The Von Duprin EL option can be added to any existing 33A/35A, 98/99 series exit devices. 
SD is Special cylinder dogging in the center case of 98/99 rim and vertical rod non fire rated devices and is available with standard, EL, QEL, CX and ALK.
You can not use these options together on the same device per the following reasons: QEL/EL device retracts the latch bolt of the exit device allowing entry. CX (Chexit) device locks the p...
Yes, the current conversion kits will fit the old style/obsoleted 35 or 35 series vertical rod exit devices. 
It can but the solenoid will need to be purchased through New England Door Closer as the factory discontinued the old ELR solenoid (part #650092-000) in June 2010.
The EL retrofit kit will work with an old style 33/3547 exit device.
If mechanism cover plate causes the EL solenoid to drop when slid over the solenoid, the solenoid plunger requires adjustment.  You must lengthen the rod by turning the hex nut in front of the plun...
Some transformers in the power supplies provide a little humming noise and that is normal. If the humming in Von Duprin PS873 power supply is loud follow these steps. Remove the load from the outp...
  Pushing on the push  bar or activating the EL/QEL or the trim on Von Duprin XP98/99 exit device does not retract the latch, it releases the latch only. Door must be pushed or pulled when device o...
  For Product Shipped Prior to August 2012 using the old (black) potted module: a.       0-100 ft 14 gauge wire b.      0-200 ft 12...
 
If your Von Duprin EL (solenoid) device pulls and releases quickly instead of holding the latch retracted, please check all of the items below.In most cases, one or more of these solutions will r...
Since most wire transfer devices such as an EPT or electric hinges cannot provide large gauge wires, we take the small gauge wire into account when determining the overall wire size for the device....
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.