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Showing posts with label SPF Troubleshooting. Show all posts
Showing posts with label SPF Troubleshooting. Show all posts
Friday, May 8, 2015
Thursday, February 19, 2015
Flushing the "A" Side hose. How many gallons of fluid do I need to flush it out?
I get asked this all the time, so I thought I would play around and tell you how to figure that out.
A 3/8" hose.
Remember Math class and saying "when will I ever need to know - πR² (Pi x Radius Squared)?" Well look at yourself now.
3/8" = .375" diameter. the radius is 1/2 of that. .1875
.1875 x .1875 x 3.14
Thats .110 cubic inches of space inside the 3/8" hose per inch of hose.
50' of hose is 600 inches.
600 x .110 = 66 cubic inches in a 50' hose.
1 gallon has 231 cubic inches.
If you have 200' of hose, you have 66 x 4 = 264 cubic inches. 1.14 gallons to fill the hose. (add a little for the fittings at each end of each hose)
A 3/8" hose.
Remember Math class and saying "when will I ever need to know - πR² (Pi x Radius Squared)?" Well look at yourself now.
3/8" = .375" diameter. the radius is 1/2 of that. .1875
.1875 x .1875 x 3.14
Thats .110 cubic inches of space inside the 3/8" hose per inch of hose.
50' of hose is 600 inches.
600 x .110 = 66 cubic inches in a 50' hose.
1 gallon has 231 cubic inches.
If you have 200' of hose, you have 66 x 4 = 264 cubic inches. 1.14 gallons to fill the hose. (add a little for the fittings at each end of each hose)
Fluid is by passing as soon as I turn on the fluid
ANSWER: The majority of the time, this is from the side seal (the little steel thingy that rides on the mix chamber - known as assembly18C) not sealing on the chamber surface.
Check your gun PRIOR to connecting the fluid manifold to the gun. Take your gun and hook up only the air hose and turn the air valve on to allow air to flow to the gun. If a check valve (assembly # 26) pops out, you have a problem with that side cartridge (assembly # 18.) If the "A" check pops out, replace the "A" cartridge assembly or if the "B" check pops out, replace the "B" side cartridge.
The check pops out due to air bypassing the side seal/chamber surface, flowing through the cartridge and into the check valve port and this causes the check valve to pop out. Checking the gun with air supply only will save you a fortune in time, seals and frustration.
You can also try flipping the "A" and "B" cartridges if you have not run any fluid through them. Switch the "A" and "B" sides. If the problem is in the side seal, the problem will move to the other side of the gun. If the problem remains on the same side after switching/replacing the side cartridges, you could have issues with the front end body (assembly #11) being worn out or scratched.
Check your gun PRIOR to connecting the fluid manifold to the gun. Take your gun and hook up only the air hose and turn the air valve on to allow air to flow to the gun. If a check valve (assembly # 26) pops out, you have a problem with that side cartridge (assembly # 18.) If the "A" check pops out, replace the "A" cartridge assembly or if the "B" check pops out, replace the "B" side cartridge.
The check pops out due to air bypassing the side seal/chamber surface, flowing through the cartridge and into the check valve port and this causes the check valve to pop out. Checking the gun with air supply only will save you a fortune in time, seals and frustration.
You can also try flipping the "A" and "B" cartridges if you have not run any fluid through them. Switch the "A" and "B" sides. If the problem is in the side seal, the problem will move to the other side of the gun. If the problem remains on the same side after switching/replacing the side cartridges, you could have issues with the front end body (assembly #11) being worn out or scratched.
Issue: Slow Spray Gun Response When Trigger Pulled
ANSWER: The problem is the muffler/Exhaust port on the bottom of the gun handle. On the bottom of the handle is a hex head bolt with a 1/8" hole in the center. That's the breather/filter - assembly # 22. Remove the part and your speed should be normal. I left mine out, but you can push a nail through the small screen. As foam and grease collect on the screen, the exhaust leaving is slowed down causing the shift force to work against itself. Many factory people will claim you have to have that to prevent foam from entering the gun handle. I say - If you have that much foam blowing in the air, you have far bigger issues to address.
Did this answer help solve your problem? Comment below!
Did this answer help solve your problem? Comment below!
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