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von duprin noise
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RELATED FAQS
Question
Answer
What are the differences between the old PCB and the new PWM?
Resolution:
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...:
What would cause my 4600 (4630/4640) Series operator to keep trying to open and squeal after opening to 90 degrees?
Resolution:
"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...:
Why does my Chexit device open without sounding the alarm?
Resolution:
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What would cause the Von Duprin delay egress Chexit device not to provide delay egress?
Resolution:
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...:
Why is the Von Duprin PS873 power supply buzzing or chattering?
Resolution:
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...:
How to adjust First, Delay, and Retry in a PIM400 & AD400?
Resolution:
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...:
Why is my mag lock buzzing?
Resolution:
Rattling could be caused by improper mounting of the mounting plate or armature. Make sure all components are properly secured.:
Maglock Making a "Buzzing" Noise
Resolution:
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Von Duprin Hydraulic Damper Change
Resolution:
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...:
When did we start shipping the Senior Swing, Benchmark, and Falcon operators with the ES Filter?
Resolution:
On the Benchmark, 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 hold it's...: