805-402A is a pressure board control assembly used to regulate and monitor pressure on Impact 440 and RentSpray 500 sprayers. This electronic module processes input from pressure sensors and user controls, adjusting motor output to maintain consistent pressure. Replace a faulty, unresponsive, or damaged control board to restore precise pressure control and reliable sprayer performance.
| Part Number | 805-402A |
|---|---|
| Part Description | Pressure Board Control Assembly |
| Brand | Impact / RentSpray |
| Fits | Impact 440, RentSpray 500 |
| Condition | New |
The 805-402A pressure board control assembly is an electronic module that serves as the brain of the pressure management system on Impact 440 and RentSpray 500 sprayers. It receives signals from the pressure transducer and operator controls, then adjusts motor speed to maintain the desired pressure setting automatically.
Over time, control boards can fail due to electrical surges, moisture exposure, or component fatigue. A faulty control board may cause erratic pressure, failure to maintain set pressure, unresponsiveness to adjustments, or complete loss of function. Replacing it with this genuine OEM assembly restores accurate pressure regulation and ensures reliable sprayer operation.
| Pressure regulation | Monitors and adjusts motor speed to maintain set pressure |
|---|---|
| Signal processing | Interprets inputs from pressure sensor and user controls |
| System communication | May interface with display and diagnostic systems |
| Erratic pressure | Pressure fluctuates widely during operation |
|---|---|
| No pressure control | Adjustments have no effect on motor or pressure |
| Failure to maintain | Cannot hold set pressure under load |
| Visible damage | Burnt components, cracked board, or corroded connections |
Part 805-402A is designed for use on the following Impact and RentSpray models. Always verify fitment by consulting your machine's parts manual.
| Model | Component |
|---|---|
| Impact 440 | Pressure board control assembly |
| RentSpray 500 | Pressure board control assembly |
When replacing the pressure control board, inspect these associated components to ensure complete system reliability.
Provides pressure feedback to the board; test for accurate readings.
A failing motor can cause pressure issues; verify motor condition.
Check for loose, corroded, or damaged connections to the board.
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