Hi all,
Just seeing if any of you can provide a answer to my problem
Right i have a Extracta Excell machine, it came with a 100psi pump
the pump broke recently so i took it to Woodbridge to get repaired
they fitted a 135psi shurflow for me and to start with no problems
first of it started reading 130-135psi on my pressure guage but after a few days settled to betweeen 110-120psi wich according to them is normal, i find that strange as my 100psi used to stay at 100psi and i saw a 400psi machine the other day and that read 400psi on the guage.
Anyway thats not really the major problem its when i pull the trigger, normally now when pulled the guage will drop to 80psi wich is still ok for me it does the job, but every now and then it will drop to anywhere from 20-40psi wich is doing nothing more than tickle the carpet.
I took it back to Woodbridge thinking there was something wrong with the pump and they say there is nothing wrong and showed me the machine working fine when i asked what they done they said they just run some acid through as there must have been a blockage in my solution line.
2 days later and it started again, it now seems to do it at least once a day it will work fine for hours and then just stop, i have noticed though that it seems to allways go wrong if i let my solution tank run dry, (so mayby air in the system?) the thing is it never done this with the old pump.
Any ideas

Also how can i clean the system of any blockages or air before i take it back to them again?