Why won’t my Von Duprin 6100 or 6200 series electric strike lock and unlock properly?
A regulated filtered DC power supply is best power choice.
If AC is being furnished, an SO rectifier kit is required between the power source and the strike. It will not work properly with AC.
Is there pre-load against the strike lip (keeper) when the strike is installed? There should be 1/32” clearance between lip and latch. If the latch is pressing against the lip when the strike energizes or deenergizes, the internal slider can’t move because an internal protrusion from the strike lip pushes against the slider.
Take the strike out of door or frame to eliminate pre-load and to check for issues or excessive heat.
Solenoids with black wires require 24VDC. Are you reading 24VDC (+/- 10%) under load at the connector near the solenoid?
Solenoids with yellow wires require 12VDC. Are you reading 12VDC (+/- 10%) under load at the connector near the solenoid?
Unscrew the solenoid. Verify that the spring and white washer are inside the solenoid and that the plunger moves freely.
Do you have other electric strikes working nearby such that you can swap solenoid or power source/wiring? See if the problem follows if you move the strike to another opening.
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