Question about Air Tools & Compressors
Do you have this pressure switch?
Posted by Anonymous on
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Posted on Jan 02, 2017
Assuming that you are wiring for 115v. Lets start with the ground. The cord that attaches to the wall outlet will have three wires, green, black , and white. Insert the cord thru one of the openings of the pressure switch and attach the green wire to the ground screw. Next look very closely at the contacts and notice that they are arrainged in pairs. There is a small brass bar with two contacts that completes the circuit for each line. Start with L1 and attach white wire from cord, then attach white wire from motor to the screw terminal that small brass bar bridges to (should be T1). Next attach black wire from cord to L2 and black wire from motor to remining screw. Remember that the small brass bar with two contacts is the bridge and simply connects white to white and black to black. Enjoy
Posted on Dec 16, 2008
Ingersoll rand parts and manuals are available at www.grainger.com, or call you local grainger store, they have a very good customer service for faxing parts lists to your place. Notice: some Ingersoll rand compressors have been recalled. Check the address below. If you have general questons about a problem that you are having, post again. Good Luck
Posted on Jan 10, 2009
1)Let your unit pump up.
2)Turn it off.
3)Find the supply line from the pump to the tank.
4)Remove the supply line from the pump head.
5a)If you hear air coming from the tank you have a bad check valve.
5b)If you do not hear air coming from the tank, you have a leaky
Posted on Feb 02, 2009
I have worked on many makita compressors and have run-across this problem on a few of them. Your compressor has a check valve that is supposed to hold tank pressure after the switch reaches set pressure. There is an unloader valve built into the pressure switch that releases the pressure in the discharge hose after the unit shuts off. The unloader allows the compressor to restart with-out any pressure in the discharge line. If the brass check valve is leaking pressure back into the system, air will leak out of the unloader valve. Follow the discharge line to the tank and you will see the brass check valve. To test valve for fault, run the compressor till it builds around 80 psi and unplug the unit from the wall outlet. Remove the 1/4" hose connector from the check valve and check for air leaking out of the valve. If it is leaking you can order form www.toolpartsdirect.com. or call the makita 1-800 number. The price is about the same. Good Luck on your repair.
Posted on Mar 19, 2009
EVERYONE WANTS TO MAKE EVERYTHING PLASTIC THESE DAYS. REMOVE PLASTIC LINE AND REPLACE WITH 1/4" FLEXIBLE COPPER ( ANY KIND ) JUST PICKUP A SMALL ROLL AT A HARDWARE STORE. MAKE SURE YOU GET A COUPLE OF FITTINGS, NUTS AND/OR FERRELS. HOPE THIS HELPS, JODY
Posted on Apr 20, 2009
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