IMPORTANT: Any time you install or remove components, disconnect power to the unit before you begin. "Hot Plugging" components in this manner can cause even further damage to one or more cabinet components.
To power down a Toro E-Series OSMAC system, flip the circuit breaker on the power supply inside the cabinet to the "Off" position.
If the pump in your Toro E-Series OSMAC system is not turning on, test the functionality of the Pump Common first:
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