Rice Lake TradeRoute HL Series - Low Profile Installation and Setup for Models from 2011 and Older 128406 - Manual (Page 16)

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Figure 9 – Hydraulic Schematic for 4 Cell Systems
12.3 Valve to Pump
The hydraulic pump on the truck can be plumbed to the control valve. Simply plumb
pressure from the pump to the pressure port on the valve, and plumb the tank port of
the pump to the tank port on the valve.
WARNING: Control valves supplied by Rice Lake Weighing Systems contain
a pressure relief valve. This ensures the pump is protected from over
pressurization. This pressure setting may require adjustment depending on
the application (consult factory).