Below is a short list of operational procedures and helpful hints to ensure your KEITH® WALKING FLOOR® system provides years of good service.
- The hydraulic pump and PTO system requires hydraulic pressure of 2800 PSI with a minimum of 10 gallons per minute of oil flow for proper operation.
- The PTO/Pump system requires a pressure relief valve set at 2800 PSI.
- End-dump truck PTO systems which are set at a maximum 2200 PSI hydraulic pressure will not operate a WALKING FLOOR system properly and could cause serious damage to the system.
- The WALKING FLOOR system requires a minimum 40 gallon oil reservoir to ensure oil does not overheat during unloading and result in heat damage.
- Properly installed, smaller oil reservoirs with coolers may be used provided that they supply adequate cooling.
- A trailer equipped with a standard KEITH WALKING FLOOR drive is capable of unloading approximately 35 tons of material.
- A trailer equipped with a heavy-duty KEITH WALKING FLOOR drive is capable of unloading up to 55 tons.
- A trailer equipped with a KEITH WALKING FLOOR drive is capable of unloading most materials in 4 minutes or less, if the PTO/Pump is set up properly.
- Unloading speed is a function of oil flow. With an oil flow of 30 GPM, the average unloading time is 6 to 7 minutes for a 45 ft/13.5 m trailer with 3.0" cylinders.
- All WALKING FLOOR systems are designed for two way operation - loading or unloading material. A “Control Valve” controls the forward or reverse floor movement.
- A partially opened or partially closed ON/OFF ball valve will create heat damage and result in slower unload speeds or complete floor stoppage. Always open or close the ON/OFF ball valve completely.
- Heat damage will void the warranty on hydraulic components.
- Always make sure back doors are open before engaging the WALKING FLOOR system.
- Never walk on or stand in the way of the material while unloading.
- Make sure quick couplers are fully connected.
- Be sure the quick couplers are connected correctly (Pressure to Pressure - Return to Return).