I. Core Specifications

Model: 300619-02309A (30061902309A)

Voltage: DC 24V (Construction Machinery Standard)

Type: Electronic, Power-on Delay, Fixed / Adjustable Time

Contact Capacity: 10A/24VDC

Terminals: 3-Pin Waterproof Plug (Power, Ground, Output)

Functions: Wiper Intermittent Delay, Engine Pre-heating Delay, Power-off Delay (after engine shutdown)

Housing: Plastic; Waterproof, Dustproof, and Vibration-resistant

Operating Temperature: -40°C to +85°C

II. Applicable Models (Doosan / Diwulun)

Wheel Loaders: DL200A, DL250A, DL300A, DL420A

Excavators: DX140W, DX160W, DX190WA, DX200A, DX210, DX225LCB, DX330

Aliases: Doosan Wiper Relay, Diwulun Intermittent Timer, Daewoo Delay Controller

III. Function Breakdown (3-in-1 Multi-purpose)

Wiper Intermittent: Controls wiper operation with a 3–10 second intermittent interval, suitable for rainy working conditions.

Pre-heating Delay: Activates glow plugs for 5–15 seconds during cold starts (Equivalent to 537-00010).

Power-off Delay: Delays power cutoff by 30 seconds after the ignition key is turned off, protecting the electrical circuits.

IV. Symptoms of Failure

Wipers do not operate intermittently / Run continuously / Do not move at all

Difficulty with cold starts; emission of white smoke (indicating pre-heating failure)

Immediate power cutoff after engine shutdown / Equipment malfunctions

Burnout/corrosion of the plug connector; indicator light fails to illuminate

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