Operating Instructions

The SP1500 pump is designed to work with hydraulic tensioners. Before operating the pump, verify the maximum pressure of the tensioner and the hose, as well as compatibility between the connectors.

  1. ALWAYS check the general state of the equipment before connecting it to the main supply, to detect possible damages, both in the pump and in the hydraulic circuit.

  2. Verify that the hydraulic circuit is properly closed and that the tightening devices are correctly placed on the bolts to be tightened.

  3. Check that the personnel involved in the tightening process is on alert and wear adequate personal protective equipment.

  4. Connect the pump to the main supply. Note that when using an autonomous generator unit, it must provide a minimum of 16 KVA. Refer to the section Main Supply Requirements for details.

  5. Make sure that the emergency stop switch is released.

  6. Turn the regulating pressure valve counterclockwise to make sure that at the start up moment the pressure does not rise to an undesirable value.

  7. Turn on the hydraulic pump: Turn the motor on by pressing the GREEN Button. The pump will be running on idle, ready to build the pressure.

  8. Set the working the pressure: To regulate the target pressure, press and hold the GREEN Button of the pendant and turn the pressure regulating valve progressively clockwise. Raise the pressure until the required value is reached.

  9. Once the working pressure has been adjusted, the pump can be operated in two ways:

    • CONTINUOUS MODE: The pump remains on and automatically compensate the pressure drop on the circuit due to expansion or small leaks. This operational mode can be used by a CONSTANT pressure of the GREEN button.

    • STATIC MODE: When the pump has reached the working pressure, press the GREEN button every so often for the intensifier to compensate the pressure.

  10. To relieve the pressure of the circuit:

    • While the pump is turned on, press the RED button of the pendant to activate the relief valve, which lets the oil return to the tank. The valve remains open for 2 seconds in this mode to let the oil return. After that, the valve stops being activated and the motor remains running on idle.

    • The pressure is also relieved during the time the RED button is kept pressed. This is useful when the 2 seconds pre-set are not enough for the tensioners to retract the whole stroke.

      Press the emergency stop switch at any time. While in this state, the alarm of the control box will be activated, the blinking screen of the logic module in red color. The pump remains in this mode for 6 seconds, relieving the pressure and after that time the motor will turn off.

  11. To turn off the hydraulic pump:

    • Turn the pump off by pressing the RED button a second time after pressure relieve.

    • Upon pressing the emergency stop switch, the hydraulic pump will turn off after it is relieve of pressure during 6 seconds.