Most likely your pressure cut-off switch is defective. Not as common but it happens that somehow your pressure switch has been turned way out of limits and could just need to be tightened down to within specs OR...
The following is a description of the control panel indicators.
Motor Running Indicator,
RAPID CLEAN,
Pressure Indicator
The pressure indicator shows the current operating pressure of the sprayer. It has three different indications: blinking yellow, solid yellow, and solid green.
Blinking yellow: When the pressure indicator is blinking yellow, the sprayer is operating between 0 and 200 PSI. A blinking yellow pressure indicator means:
• The sprayer is plugged in and turned "ON"
• The sprayer is at priming pressure (little or no pressure)
• It is safe to move the PRIME/SPRAY valve between positions• It is safe to change or replace the spray tip.
NOTE: If the pressure indicator begins blinking yellow when the pressure control knob is set at a higher pressure and the Prime/Spray valve is in the Spray position, either the spray tip is worn or the sprayer is in need of service/repair.
Solid Yellow: When the pressure indicator is solid yellow, the sprayer is operating between 201 and 1900 PSI. A solid yellow pressure indicator means:
• The sprayer is at the proper pressure setting for spraying stain, lacquer, varnish, and multi-colors
• If the pressure indicator goes to solid yellow when the pressure is set so that it starts at solid green, it indicates one of the following:
a.Tip wear Indicator — when spraying with latex
or at high pressure the solid yellow appears.
This means the tip is worn and needs to be
replaced.
b.Tip Too Large — when a tip that is too large
for the sprayer is putin the gun, the pressure
indicator will turn from solid green to solid
yellow.
c.Fluid Section wear — if a solid yellow
pressure indicator appears when using a new tip
and the pressure is set at maximum, service may
be required (worn packings, worn piston, stuck
valve, etc...).
Solid Green: When the pressure indicator is solid green, the sprayer is operating between 1901 and 3300 PSI. A solid green pressure indicator means:
• The sprayer is at the proper pressure setting for spraying oil-based and latex house paints
• The sprayer is operating at peak performance at a high pressure setting.
Motor Running Indicator: The Motor Running indicator is on when the motor is commanded to run. This indicator is used by service centers to troubleshoot motor.
Using the last ppg. about the "Motor Running Indicator"... if it is showing it then it is in the commanded mode to run continually. switch that dude to off command!
Thanks Merle. Is that the pressure transducer peice. The silver thing with a phone line hanging out the top of it?
The following is a description of the control panel indicators.
Motor Running Indicator,
RAPID CLEAN,
Pressure Indicator
The pressure indicator shows the current operating pressure of the sprayer. It has three different indications: blinking yellow, solid yellow, and solid green.
Blinking yellow: When the pressure indicator is blinking yellow, the sprayer is operating between 0 and 200 PSI. A blinking yellow pressure indicator means:
• The sprayer is plugged in and turned "ON"
• The sprayer is at priming pressure (little or no pressure)
• It is safe to move the PRIME/SPRAY valve between positions• It is safe to change or replace the spray tip.
NOTE: If the pressure indicator begins blinking yellow when the pressure control knob is set at a higher pressure and the Prime/Spray valve is in the Spray position, either the spray tip is worn or the sprayer is in need of service/repair.
Solid Yellow: When the pressure indicator is solid yellow, the sprayer is operating between 201 and 1900 PSI. A solid yellow pressure indicator means:
• The sprayer is at the proper pressure setting for spraying stain, lacquer, varnish, and multi-colors
• If the pressure indicator goes to solid yellow when the pressure is set so that it starts at solid green, it indicates one of the following:
a.Tip wear Indicator — when spraying with latex
or at high pressure the solid yellow appears.
This means the tip is worn and needs to be
replaced.
b.Tip Too Large — when a tip that is too large
for the sprayer is putin the gun, the pressure
indicator will turn from solid green to solid
yellow.
c.Fluid Section wear — if a solid yellow
pressure indicator appears when using a new tip
and the pressure is set at maximum, service may
be required (worn packings, worn piston, stuck
valve, etc...).
Solid Green: When the pressure indicator is solid green, the sprayer is operating between 1901 and 3300 PSI. A solid green pressure indicator means:
• The sprayer is at the proper pressure setting for spraying oil-based and latex house paints
• The sprayer is operating at peak performance at a high pressure setting.
Motor Running Indicator: The Motor Running indicator is on when the motor is commanded to run. This indicator is used by service centers to troubleshoot motor.
Using the last ppg. about the "Motor Running Indicator"... if it is showing it then it is in the commanded mode to run continually. switch that dude to off command!
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SOURCE: Compressor will not reach the design pressure
Hi,
Let us try the easy possibilities first:
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards. Thank you for using FixYa.
SOURCE: Intermittent pressure building
The check valve is easy to test. All that you have to do is run the compressor till you have some pressure in the tank, 50 ~ 60 lbs will do, then remove the air discharge tube at the check valve installed in the tank (the brass valve). Spray soapy water into the valve. Tiny leak is ok, rapid leak replace valve with generic valve from www.grainger.com . Most likely problem is worn cylinder or reed valves in the head. To check cylinder, unplug unit and (oilfree compressor) remove cover to expose the crank. Push the piston all the way up and check for scratches on the upper part of cylinder. If scratched, replace with kit# K-0650 available at www.toolpartsdirect.com. If cylinder is smooth all the way up then problem should be the reedvalve plate in the head. The reeds could be held open with debris or broken. Clean or replace as needed. Good Luck and email if you have questions about the repair. (Oil in crankcase type compressor will not have cylinder problems)
SOURCE: I have a 3hp 15gal air compressor that i bought
I am assuming that your compressor is oilfree type. Lets go over some basics to determine where fault is located. You will need to do some simple tests. If there are leaks the compressor may not reach set pressure. I use soapy water on all connections and on the head/headvalve (remove plastic covers to get to all parts that may leak) while compressor is running. Make repairs as necessary. If still low pressure, while compressor is running and has reached max obtainable pressure (in your case 15 lbs), carefully place finger over intake port hole (remove filter). If the compressor is pumping normally but leaking there will be ample suction at intake and cause the compressor to speed-up when intake is obstructed with finger. If you feel plenty of suction and no visible (soapy water) leaks, then the problem is probably the cylinder /ring is not correctly seating /scratched and air is leaking past cylinder. Make sure that the cylinder /piston ring is properly aligned and that the lip on the vinyl ring is up toward the head. On oilfree compressors you can examine the cylinder by pushing the piston all the way up, then look for scratches neer top of cylinder. If scratched install cylinder kit. If you do not feel suction but rather air blowing out of the intake, then the problem is the headvalve plate/reed valves are leaking. The reeds must seal perfectly on their seats and not be bent or have obstruction. Replace as necessary. Only one other thing to check and that is the intank check valve. Easy to check. Run compressor till you have about 15 + lbs in the tank then unplug compressor. Carefully loosen the inlet hose at checkvalve and listen for air leaking out of tank. If leaking replace checkvalve. Use caution when removing head to try and save the gaskets. If you see any model numbers on your compressor beginning with WL, you probably have a unit built by Campbell Hausfeld and can find parts at www.chpower.com
Good luck on your repair and email if you have other question.
SOURCE: 20 hp intec runs wide open
24 hp briggs. replaced cam, exhaust lobe was unhardened. now it doesnt fire on that cylinder. plug is wet. spark tester shows spark,please help.
SOURCE: craftsman air compressor 2 hp 20 gallon, seems to
IT depends on the tool. Some tools require higher cfm. (cubic feet per minute) of air. IF your air line is not large enough, then sometimes 90psi is not enough to operate a tool as there is a pressure drop at the tool. Look at the required cfm for each tool. Find a chart for air line size, cfm and pressure. Most impact wrenches should be used on a minimum 3/8" air hose. You could look at your manual and see what the max pressure is on your compressor. You may be able to decrease the differential pressure e.g off and 100 and on at 90, but then the compressor will cycle more frequently, and may exceed the duty rating of the compressor.
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