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CHECK OIL LEVEL/MAKE SURE THE COMPRESSOR IS CONNECTED TO WALL PLUG NOT THRU EXTENSION CORD???CHECK FUSE BOX TO HOUSE ALSO..MOST COMPRESSORS MUST BE CONNECTED TO OUTLET WITH OUT EXTENSION CORDS
On a 375 h s#201202020049 change the element in the compressor crank and run for 10 minutes good are and then shuts off and it won't crank back turns over but won't start
More then likely it is either in the valve plate (bad flapper valve or gasket) or the piston and sleeve have worn out which is usually from scoring. You will see that when you take the head off to inspect.
I can not find a Craftsman compressor with that model number anywhere so here are a couple things to look into. If the compressor fills to 70psi and keeps on running check the valve plate and piston/cylinder assemblies. Check that the valve reeds on the valve plate are not bent, broken or warped from heat. Then check that the wiper (oil less) or pistion rings (oil splash) are not damaged and that the cylinder wall is not scarred up. Any of these will let the compressor fill up to the point where the air pressure leaks past the valves or piston and won't fill any further. If the compressor fills to 70psi then shuts off the problem is in the pressure switch. Some have an adjustment screw or bolt to control when it turns on and shuts off. If you had a drop from 100 to 70 the springs may be weak or broke and you'll have to replace the switch.
All compressors dump a little air when they shut off, it's the air in the pump head and discharge tube. This bleed off should only last two to three seconds. If this pressure isn't bled off the motor won't be able to restart when the pressure drops in the tank becuase there will be too much pressure in the pump head for it to start turning again. If you have a longer bleed off or if the motor is struggling to restart most likely you have a stuck or broke check valve. It's the piece where the discharge tube connects to the tank. It's designed to let air into the tank but not back out so the pressure valve can bleed off the air in the pump. On rare occasions you can remove it and clean it out but usually they have to be replaced. You would need Makita Part Number 409004-E.
I don't know if your unit is exposed to the direct sun light if it is I suggest you create some shade , or if this this unit is enclosed is not getting enough air flow to keep cool.
( this air flow helps to stabilized the sensor that stop and start the compressor )
The compressor will fill slowly if there is a leak at a fitting or pressure leaking back from the checkvalve. It will also fill slowly if there is a worn / broken reed valve/s and or leaking gasket in the head. Try easy test first. With compressor running and air filter off, spray soapy water on all joints looking for leak (also spray on head of pump to check leaking bolts /gaskets). If leaking, repair as needed. If no leaks are found with soapy water, stop compressor and listen for leak at the pressure switch unloader valve. If no air appears to be leaking from the compressor then most likely problem is with reed valves or gasket in the head. Remove head very carefully trying not to tear gaskets. Examine reed valves for broken parts and or burned /broken gaskets. If gaskets or reed valves are bad, the discharge air tube will be very hot. Repair as needed. Good luck
A 2475 has no way to tell how much oil is in it other than removing the oil fill plug and looking unless a low oil level switch has been installed. You should fill this unit to the bottom of the oil fill plug threads. It's less than 2 quarts. IR does have a spec sheet that tells the exact amount. I don't have it available right now!
Below is the procedure for COOLANT change including amount needed. SSR Ultra Coolant (Standard Factory Fill) SSR Ultra Coolant is a polyglycol base coolant. Change Ultra Coolant after every 8000 hours or every two years, whichever comes first. In addition to the tools normally found in any reasonably equipped serviceman's toolbox, the following items should be available at the work site: 1) Suitable drain pan and container to hold lubricant drained from unit. 2) A quantity of proper lubricant sufficient to refill the compressor. 3) A minimum of one replacement coolant filter element of the proper type for the unit to be worked on. There is a coolant drain valve on each compressor. It is located on the bottom of the separator tank. The coolant should be drained soon after the compressor has been shut down. When the coolant is hot, the drainage will be more complete and any particles in suspension in the coolant will be carried out with the coolant. Hot coolant can cause severe injury. Use care when draining separator tank. To drain the unit, place drain pan under drain valve. Open drain valve to start drainage. After draining is complete, close drain valve. After the unit is drained and a new coolant filter element is installed, refill the system with fresh coolant through the filler cap on the side of the separator tank. Bring the receiver level of coolant up to the top of the sight glass. Replace the fill cap. Start the compressor and allow it to run unloaded for a short time. The correct coolant level is at the midpoint of the sight glass with the unit running in the "UNLOADED" mode. If the level is not near the midpoint, stop the compressor and allow all pressure to relieve from the system. Open the fill cap and add more coolant. 50 hp (37 kw).....................3.4 gallons (12.9 liters) Coolant fill quantity ! WARNING Hot coolant can cause severe injury. Use care when near this area. Use only recommended coolant. Read instruction book before servicing. 39543921 Replace the fill cap. Start the compressor and allow it to run unloaded. The coolant level should now be near the midpoint of the sightglass. DO NOT OVERFILL THE MACHINE. Over filling will affect separation and carryover down stream.
sounds like you need a new check valve which should be somewhere between the compressor outlet piping,tubing,etc and the tank which prevents the air in tank to back feed to the compressor which would cause hard starting and could damage the motor easy way to check is when you shut off the compressor with some air in the tank if the check valve is bad it would continue to bleed air out out the unloader valve .the unloader valve on your unit is most likely part of the pressure switch when the unit shuts of it should only bleed down the pressure in the pump so it would make it easy to start when needed hope i didn't confuse you
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