Pentax water pump

Although it has a manufacturer's name of Pentax, I don't think this is a camera. Industrial Machinery may be a better option.

If the pump runs manually as you state, then the problem probably has to do with the control for the pump. It could be a bad capacitor in the control , but I'm not sure there are replacement parts for these control units. Possibly you need a new control unit.

Check the pressure switch. Be sure you have enough water available. Check for a leak. What are you pumping. Is it pumping. I am not familiar with this pump so I am just listing some points to check. If it is a submersible well pump it can develop a lot of pressure.

There's not enough water running into the pump this is why its cutting out , hope this helps

we need wiring diagram for achromatic 1. the power supply is 240 v 50 hz

Are you sure the rotor on the motor is rotating freely and getting up to full speed? Did you try running the motor without attaching the housing that actually pumps the water?

yes, buy a better pump that is not smart

it sounds like the switch is faulty take it back to the shop and tell them ok

hi i have a pentax water pump the smart head, it works very good .one day the pump did not come on when i turn the pipe on so i take off the switch i put it back on the pump came on water was flowing as normal when time to turn the pipe off the pump will not cut off so i switch it back off and call an electrician he check it and he said i need to change the circuit board in the pump so he did now the started to work only on the lower pipe but it takeing long to come on and cut off.the upper pipe when turn on the pump not coming on i open all the union to bleed make sure on air in the line but still having the same problem can this be the head it self need changing?

It sounds like there is a leak in the system allowing pressure to drop.