Re: campbell hausfeld paint sprayer has no suction
The same thing happened to me before if the paint is too thick. Another reason was when the gun toppled over and paint went into the spring and needle in which case you will have to take it apart and clean it.
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Go to the Campbell-Hausfeld website at http://www.chpower.com/, under the 'Service & Support" tab select 'Manuals/Parts Lists. Do a search for your model number and you'll be presented with the manuals and parts lists for that line of paint sprayers.
AL SeriesParts List- AL Airless Breakdown.6AL SeriesParts List- AL Airless Models - Breakdown with Block- 2001.073.1AL SeriesSafety Sheet- 2011.06AL SeriesSpecifications- Airless Tip Compatibility.3AL SeriesSpecifications- Paint Tip Selection Chart- 2003.04.5
In order of ease/cost to fix: First, check your spray tip. Most of them are reversible to help spray out any debris that may be lodged in them. Next, check that all of your filters are clear and let paint flow freely. Depending on your model there are up to three, one filter in the spray gun, usually in the handle, another filter is at the pickup tube and some sprayers also have another filter on the machine where the hose hooks up. Another cause may be because your paint is way too thick or not mixed well. A highly recommended paint additive for airless sprayers is Floetrol, it makes the paint flow extremely well. If none of these fix your problem you may well have a worn packing or diaphragm, again depending on your model, and the machine isn't developing enough pressure to atomize the paint. If you have the means put a pressure guage in line with the hose at the machine and turn it on. You need at least 1200 to 1800 psi for most latex paints, a little higher for enamels and thicker paints.
there are several issues that can cause this problem. I will assume you have used the sprayer before so that will eliminate an incorrect air cap. The only other issues are paint viscosity, worn parts and the number one cause improper cleaning. Be prepared for a complete disassemble of your gun. Depending on what you spray any residue can become hard as cement and it only takes a small amount to cause problems. Below is a link to the manual that gives an exploded view of your gun. Hope this helps but if not please let me know and I will trouble shoot further.