MEP-802

[birddog1106]

I have no power (24) to power switch checked fuel level-fuses will turn over on battle switch ??

 

[Ray70]

I assume you E-stop switch is pulled out and the CB-1 circuit breaker is pushed in?
If you have nothing at all, no panel lights nothing, check the shunt mounted near the right side, bottom inside the control box.
Also check the CR1 diode, I think it's 2nd up from the bottom on the panel to the rear left back wall of the control cube, below the 4 burden resistors, R10 - R R-13.
If either is open you will have nothing for DC power at the control panel.

 

[birddog1106]

I assume you E-stop switch is pulled out and the CB-1 circuit breaker is pushed in?
If you have nothing at all, no panel lights nothing, check the shunt mounted near the right side, bottom inside the control box.
Also check the CR1 diode, I think it's 2nd up from the bottom on the panel to the rear left back wall of the control cube, below the 4 burden resistors, R10 - R R-13.
If either is open you will have nothing for DC power at the control panel.

I got the power back with a LARGE HAMMER !! low fuel switch Hanging-up Installed new fuel pump 3181 I think was the number.Tks for your response VG

 

[Ray70]

Ok, so that would mean that you had 24V DC at the panel, you just couldn't start it because the low fuel fault should have been illuminated.
Were you getting a fault light when trying to start it?
Also, in a low fuel scenario typically the machine would start briefly then shut down within a few seconds with the fault indicator on.
Also a bad fuel pump would not cause "no power either", so I assume you had power, it just wouldn't start??

 

[birddog1106]

Ok, so that would mean that you had 24V DC at the panel, you just couldn't start it because the low fuel fault should have been illuminated.
Were you getting a fault light when trying to start it?
Also, in a low fuel scenario typically the machine would start briefly then shut down within a few seconds with the fault indicator on.
Also a bad fuel pump would not cause "no power either", so I assume you had power, it just wouldn't start??

AS Before,I had NO Power at on/off (red) button. dash lights did not come on untill that 5 lb did it`s job. Also the fuel pump E-8131 works great and easy installation. No fault light.............vg

 

[Ray70]

In that case you hammer action had to have done something else to "fix" a bad connection somewhere.
The fuel level sensor has absolutely no ability to disconnect 24V power from the control panel, so I think you just got lucky, but perhaps only temporary.

 

[birddog1106]

In that case you hammer action had to have done something else to "fix" a bad connection somewhere.
The fuel level sensor has absolutely no ability to disconnect 24V power from the control panel, so I think you just got lucky, but perhaps only temporary.

Well we all have opinions and thank you for Yours..............VG

 

[Ray70]

When the dual float sensor is sensing low fuel, the machine is still allowed to start each time you cycle S1. The machine will start for a short period of time, then the low fuel indicator light on the fault panel is triggered and the machine will be shut down ( with power still on and the low fuel indicator still illuminated). If you cycle the start switch and start the machine again, this same sequence will repeat indefinitely until you are truly out of fuel. At that point power will still be at the control panel and you can crank the engine till' the cows come home, but now it won't start because it is out of fuel. The 24V power to the control panel is never disconnected nor is it completely interrupted ever. Those are the facts, supported by the wiring schematics, not my opinion.