E+D+J Fire pump system, with electric pump, diesel engine pump, jockey pump and control panel. Fire pump system E+D+J,Operation: 1 ... carbon/ceramic.2. Diesel engine pump, with capacity equal to electric pump capacity, fuel tank.3. Jockey pump, horizontal or vertical, 10, ... panel, MCB for each pump, DOL starter with thermal over load protection for main electric pump, hand off auto selector switch ...