Von Duprin CX98/99 power supply

Von Duprin CX98/99 is a motor‑driven controlled egress (Chexit) device that operates on 24 VDC and uses a 1.25 A inrush current with a 390 mA holding draw; common failures include power supply mismatch, relay contact wear, or motor winding damage. Typical fault patterns are loss of strike actuation, failure to release after fire alarm, or intermittent operation due to loose wiring or degraded contacts. First‑check diagnostics: verify the 24 VDC supply and inrush current with a multimeter; inspect continuity and resistance of the motor windings; examine relay contacts for pitting or corrosion and confirm proper door status and alarm signal routing.[oss-gpt-20b]

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