A2.2. Nominal Speed (A Slower Speed Than Usual) - MP sava3 Technical Manual

A2.2. Nominal speed (a slower speed than usual)

No load
- Electrovalve for changing speed (YR).
- The coil is not being supplied correctly  Check the connection in the connector and in the control panel terminal.
 To check the excitation of the coil, place a screwdriver on the upper part to perceive any force of attraction.
- The electrovalve actuator is blocked  the oil returns to the tank via the YR electrovalve sheath.
Clean any possible shavings or impurities.
 Make the seating of the ball on the mechanized cone at the base of the electrovalve.
- Pulsation minimizer (Silencer)
- Partial break or hole in the component  Replace minimizer (the oil is being lost through the soldered joint).
Full load
- Overpressure valve regulator (screw nº 1)
- The screw is wrongly adjusted.
 The return of the oil to the tank with less pressure than that needed for the task.
 Adjust the aforementioned valve to pressure = 1,4
- In order to proceed to carry out the adjustment, we must completely untighten the regulator screw; close the shut-off valve and carry out a call in an
ascending direction. As we begin to introduce the screw, the pressure will start to increase (pressure gauge). Continue until obtaining the appropriate
pressure. In the case that this is not possible, take the regulator apart as indicated in the picture, cleaning any possible impurities which may exist between
the conical piston and its frame.
V700 - 11/2017
YD + YE electrovalve YR electrovalve
·
P
est. Max.
29/40
MP sava3 Hidraulic Power Unit 1 ¼" 1 ½"
YS electrovalve
MTMECMPsava3_700_EN