1IntroductionThis manual contains procedures for the installation or replacement of the following:For applications which require UL listing:❑ Veeder-Root Non-Discriminating Stand-Alone Dispenser Pan Sensor withDispenser Control InterfacePart No. 847990-001 (Float-Switch Type)❑ Veeder-Root Discriminating Stand-Alone Dispenser Pan Sensor with Dispenser Control Interface Part No. 847990-002 (Differentiating type)For applications which require cUL listing:❑ Veeder-Root Non-Discriminating Stand-Alone Dispenser Pan Sensor withDispenser Control InterfacePart No. 847970-001 (Float-Switch Type)❑ Veeder-Root Discriminating Stand-Alone Dispenser Pan Sensor with Dispenser Control InterfacePart No. 847970-002 (Differentiating Type)The above parts are designed and manufactured by Veeder-Root. This manual assumesall preliminary site preparation is completed, and that field wiring to the dispenserjunction box is in place.Safety SymbolsThe following safety symbols are used throughout this manual to alert you to importantsafety hazards and precautions.ExplosiveFuels and their vapors are extremely explosive if ignited.FlammableFuels and their vapors are extremely flammable.ElectricityHigh voltage exists in, and is supplied to, the device. A potential shock hazard exists.