Loncin G420 Pressure Washer

[Nayden]

 Hi , could someone tell me why the pressure goes down to 2000 psi and then goes up to 3000 psi?When I work with it there is no problem with the pressure. 

 

[Jordiebarrett]

Is there some sort of pressure switch? Looks and sounds like it's idling, slight pressure loss so it builds it back up again. I guess it prevents the machine from having to run flat out constantly?

Sent using the Window Cleaning Forums mobile app

 

[Nayden]

Is there some sort of pressure switch? Looks and sounds like it's idling, slight pressure loss so it builds it back up again. I guess it prevents the machine from having to run flat out constantly?

Sent using the Window Cleaning Forums mobile app
 

Just unloader valve , no leak. Machine worked only for 25 hours in total. 21/Lpm Belt driven , annovi reverberi pump.