von duprin noise

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The new potted module ( PWM ) operates with a soft start, gradually increasing the input on time to the pull coil until it is on 100% of the time. This results in less noise when EL solenoid is pul...
       "Opening Force" adjustment could be set to strong (high).  This adjustment is a turn pot adjustment which can be found on the controller.  Try adjusti...
If the Chexit device shipped prior to 8-24-2015  is not adjusted correctly ( Check vertical rod or Mortise finger) without using the door position switch and nuisance delay is&n...
 
For Motor driven Chexit devices shipped from the factory after 8-24-2015, the Chexit Secure Relay Contacts( white and violet wires) change state to signal the device is not secure. Check the f...
For Solenoid driven Chexit devices shipped from the factory prior to 8-24-2015, the following could cause the device not to provide delay egress:Measure the voltage between green and orange wires o...
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...
With the SUS connected to the AD400, in the EDIT tab there are radio communication settings "FIRST/DELAY/RETRY." FIRST - Is the first delay after the initial transmission of credential data, befor...
AD400 factory default settings when shipped are FIRST = 300 (m sec), DELAY = 200 (m sec) and RETRY = 5  
To change FIRST/DELAY/RETRY connect and couple the SUS/HHD to the AD400 and find under the EDIT tab the FIRST/DELAY/RETRY settings. See notes Or connect the SUS/HHD t...
If a magnetic lock is buzzing or noisy it could be the result of an AC component riding on the DC supply voltage. Using a meter, check for AC riding the DC level. If possible test the mag lock wit...
Rattling could be caused by improper mounting of the mounting plate or armature. Make sure all components are properly secured.
 AC-voltage or "noise" on a power line can cause hum. Ensure supply is filtered and regulated 12 or 24 volts.Not a transformer.Also ensure hardware is properly secure eliminating the poss...
Von Duprin Hydraulic Damper Since transitioning in February 2014 to a new hydraulic damper, Von Duprin is announcing the use of another alternative design. Despite the small design differences, t...
The ES Filter started to ship with these units (Senior Swing/Benchmark/Falcon) on 4/22/2013.  The ES Filter kit will help eliminate line noise from an Electric Strike if used. 
On the Senior Swing, if you have line noise from a strike the unit will go into an Error Code on the Control Box (Er14) and will not operate.  Adding the ES Filter, which is a diode, will eliminate...
On the Benchmark and Falcon, if there is line noise from a strike then the unit will lose it's hold open time.  Adding the ES Filter, which is a diode, will resolve this issue and the unit will hol...