U
Unloader Valve Assembly
Valve assembly protecting pumps from over-pressure. Automatically diverts flow back to tank when spray sections close.
Urea-System Freeze-Protection
Heating circuit keeping AdBlue lines above –11 °C. Ensures reliable SCR operation in severe winter conditions.
Unplanned Stop Log
Log of stops with reason codes.
Urea-Tank Level Sensor
Sensor monitoring AdBlue level for the SCR system. Prevents NOx-emission faults by alerting the operator before depletion.
Unplanned Stop Report
Form completed after any roadside stoppage detailing fault cause and rectification. Forms part of fleet reliability tracking records.
Urea‑SCR System
Aftertreatment reducing NOx on modern sweeper diesel engines.
Underslung Fan Drive
Belt/shaft layout placing fan low for compact sweeper bodies.
Unsealed-Road Mode
Controller preset optimising suction and broom speed for loose-gravel roads. Reduces dust creation while maintaining effective collection.
Urethane Squeegee
Durable squeegee for paint/epoxy markings.
Undertray Inspection
Inspection of underside for wear/leaks.
