pump not making presure sometimes

[ANDYS]

i have cat pumps at my coinwash sometime there presure and sometime theres is not what could it be only happens in one of the bay ?

 

[DiamondWash]

What type of cat pump? 310, 5CP2120W

 

[soapy]

The inlet solenoid is probably sticking. Does it only happen on hot or on cold?

 

[MEP001]

There are so many possibilities it's going to be very difficult to diagnose over an internet forum. Is it all pumps at once when it happens? Is it one pump just sometimes? Is it all pumps randomly?

What brand of equipment do you have? Upload some photos of the plumbing if you don't know.

If you don't answer the questions put to you (which is your habit) you won't get anywhere here.

 

[ANDYS]

There are so many possibilities it's going to be very difficult to diagnose over an internet forum. Is it all pumps at once when it happens? Is it one pump just sometimes? Is it all pumps randomly?

What brand of equipment do you have? Upload some photos of the plumbing if you don't know.

If you don't answer the questions put to you (which is your habit) you won't get anywhere here.

it is a cat 620 pump it only happens in one bay sometimes so i closed that bay