Where is the pressure switch for pentax smart head cam 50 situated?

Sounds like a faulty pressure switch. Contact the maker.

https://www.google.com/search?q=pentax+smart+head

Videos and earlier Fixya help

https://www.google.com/search?q=pentax+smart+head+pressure+switch

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new pump perhaps

check pressure switch

To modify the pressure:

· Start the pump.

· If the SET LED blinks, hold key + down until the SET LED

remains on.
· Then press keys + or - to modify the pressure value

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

Sounds like it is ready for a rebuild.

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.

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?