Compressor fuse keeps blowing

[artdutra04]

Originally Posted by Doug G

The SPIKE relay fuse that runs our compressor keeps blowing out when the tank pressure gets up to 120. We're worried there's a problem with our compressor. We have checked that it is running with +12V on the red lead and the pressure switch is turning off our compressor (through software) at 120 psi. I just dont get what else may be the problem. Our next fix will be to replace the pump with last years. Any other ideas??

Check your main robot battery. As the voltage of your main robot battery decreases, the amperage of the current traveling to all your electrical loads will increase. (E.g. Watts = Volts x Amps). This increased amperage is usually what blows the fuse on the Spike relay.

Replacing your main robot battery with a fresh one should take care of most of your issues.

Edit: Oops, I forgot Ohm's Law.