Hydraulic power unit will not start
Verify that the control power light on the main panel is on. If not, check the estop circuit.
Pump will not go into load
First, make sure to close the “A-Line” on the Power Pack. Place the pump into load and check to see if it builds up to system pressure (pressure should reach the level reflected in the Hydraulic Schematic Prints).
If the pressure does not develop, verify there is power to the Load/Bypass coil. This is done by checking the LED light on the angle plug of the Load/Bypass Valve located on the power unit. The LED light should be lit “ON”. If there is no power (Angle Plug Light – OFF), check the Fuse and the Output Module in the electrical panel to verify that the Pump Load Solenoid Output is “ON”.
If there is power to the Load/Bypass Valve (Angle Plug Light – “ON”), but the pressure does not come up to the system pressure shown in the Hydraulic Schematic prints, check the manual override function of this block by pressing the Manual Override button. If it is possible to build up pressure with the Manual Override button engaged, the Coil on the Load/Bypass Valve needs to be replaced.
If there is pressure with the A-Line Valve closed and the pump will not stroke, open the A-Line Valve and make sure there is power to the FWD Solenoid on the control block of the pump by confirming the LED light is lit. If there is no power (Angle Plug Light – OFF), check the Fuse and Output Module to the Forward Coil in the Electrical Panel to verify they are “ON”. If there is power (Angle Plug Light – “ON”), manually override the coil by pushing the Manual Override button. If the pump starts pumping with the Manual Override button engaged, the Forward Coil needs to be replaced.
Note: Older models may not have an Angle Plug with a Light. For these units, please verify there is power at the Angle Plug.