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I would use some sort of degrease product in the system to remove the oil residue . I believe that if you read the instructions it would say when cutting rock use only water to cool the diamond blade . Cutting oil is used only on certain metals to lubricate the saw edges and teeth as well as cooling and never in a concentration above 25% as it affects the cutting ability of the blade. For example concrete cutters use diamond saws and tap water when cutting
your pump could be over heating and cutting out during the pump cycle. or you could have something creating a 'butterfly' block in the waste pipe, that can move into a block position sometimes. let it pump until it won't. then you will be able to tell if the pump is cutting out due to heat, or if it is still running, and just unable to get the water physically out the pipe. hope this helps.
You are going to need a crank sensor when it get warmed up it looses its ability to send a signal to the ECM, (resistance is higher when hot and lower when cold) so when it cools off the signal is strong until it get hot then goes
Cross-cut shredders require monthly oiling of the cutting cylinders to maintain proper operation. Failure to oil the blades regularly could result in excessive noise during operation.
Oiling Your Shredder's Cutting Blades:
To keep your shredder in top condition, the cutting blades need to be oiled every so often (for frequency, please refer to your owner's manual). We recommend using Powershred® Lubricant or a vegetable-based oil (such as corn or canola) in a non-aerosol container with an extension nozzle.
Caution: Never use flammable synthetic oil, petroleum-based, or aerosol lubricants to oil the cutting blades. Some agents may combust, causing serious injury. NEVER USE WD40.
1. Depress and hold the reverse button down. 2. Put the tip of the oil bottle in the paper entry and make one or two sweeps the length of the entry while squeezing the oil bottle. 3. Move the power switch to Auto (I) position, or depress the manual forward button (depending on model of shredder) and allow the blades to run at least three seconds. 4. Move the power switch to Reverse (R) position and allow it to run for at least three seconds. 5. Repeat steps three and four above at least three times.
First check with a pressure gauge to see that the pressure is, indeed, dropping. Then, if it is possible, turn off the outlet valve to isolate the pump.
If pressure is still dropping, there is probably a check valve on the inlet of the pump that prevents water from the high pressure side from leaking back to the inlet piping side.
To test this, let the pump run and pressurize the house and immediately close the valve for the incoming water. If the pressure holds, then open the inlet valve and see if the pressure drops. If it drops, the inlet check valve has to be replaced (or cleaned).
Check your water pressure tank air pressure, turn off pump, drain off all water pressure and using a air pressure gauge check pressure at the schrader valve on the water pressure tank. It should be 2 lbs below pump cut-in pressure, they come factory charged at 30 PSI...works for most residential systems. Most likely you have a bad bladder in pressure tank.
Other possibles are a broken line between pump and pressure switch/pressure tank or bad pressure switch.If you have a pressure gauge on the water system(should have one near pressure switch) see if it is cycling at the right points if it is the switch is good. If pressure is dropping with NO water uasge in house you have a leak.
Most likely a bad pressure tank bladder is the problem.