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My power spayer is about 18 months old and it started acting up about a month ago. By acting up I mean it started taking longer than usual to prime itself to where the pump would stop pumping (with the wand trigger off).
However now the pump just continuously pumps no matter what position the trigger is in. In addition, the pressure at the nozzle has seemed to decrease. I assume that the wand valve is ok since it does not leak fluid when closed.
I hate to think that the pump is going bad after only 18 months of moderate use. Has anyone experienced this? Ideas?
Thanks
I have found that if you use a lot of orange deodorizer mixed into your solution and don’t flush it after, that it seems to wear away the pump seals if it is left to sit and causes the pump to go bad quicker. Not saying this is the cause of your situation, just throwing my observation out there.
Bad seals…. hmmm that makes sense. I guess it’s new pump time.
The pump has a pressure switch on it. It can be adjusted with the small screw on the end of the pump. Clockwise increases the pressure output. If the pump is functioning correctly, the pump should shut off when the trigger valve is closed. This means that the pump reached the pressure setting. It will then start up when the back-pressure is reduced. This happens as soon as you pull the trigger. As far as the slow prime, Dave mentioned one possible problem, the other could be a small air leak in the suction side of the punp or hose. Check the hose clamp connections at the pump. Also make sure the screen at the end of the blue hose is clean.
Just a note when cleaning the screen on the end of the hose. If you decide to tap it on something rather than wiping it or blowing the foreign material off, you best have a replacement screen as they do break.
If it is like mine (120 V ac) these are diaphragm pumps as are the batt. oper. ones the diaphram perforates over time mine also caused the press. switch to stop controlling due to leaking through to the switch. and i had a pressure washer on my hands (after I replaced the diaphragm). I now bleed off pressure after each use, this takes the pressure off the diaphragm. You can buy replacement parts but unless you are well versed in these pumps, I would buy the replacement head instead. good luck.
I was not aware of a 120v unit. I was given the battery operated unit with my original equipment package. I like the fact that I am “unteathered” with the battery powered unit however I wonder if the 120v units are more sturdy… Has anyone tried both? I’d be interested in the pros/cons of each. Seems as though parts for the battery operated unit are less costly (complete pump for battery operated unit is about $80, whereas the pump head alone is over $100 for the 120v model). However this cost differential may be offset if the 120v units last longer…
I have seen a 120 v model and it is like the battery version except it has a 120 v motor /pump unit and a cord end on it. The pump is nearly identical in appearance and in my opinion would have similar issues in the long run.
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