PLATE ASSEM. 9P9992 - Caterpillar

Operating the Engine and the Driven Equipment
Check the gauges and the driven equipment frequently while the engine is operating under a load. The engine can be operated for extended periods of time at full load.Partial Load Operation
Extended operation at reduced load (less than 30%) may cause increased oil consumption and carbon buildup in the cylinders. Extended operation at reduced load may also cause fuel to slobber through the exhaust system. This fuel slobber and oil consumption can result in either loss of power, poor performance, or aftertreatment system damage.To maintain engine efficiency and performance, apply a full load each hour or operate the engine at a load that is greater than 30%. These actions will burn excess carbon from the cylinders. Operating the engine at 30% or higher will also keep the aftertreatment system in normal operating condition.Note: Do not idle the engine for longer than 12 hours without loading the engine and maintaining a 30% or higher load on engine.SCR Performance and Hydrocarbons
Diesel engine combustion produces hydrocarbons (HC) in the exhaust gas emissions. Engine HC emissions are part of normal engine operation, and the levels are further reduced with the use of the SCR aftertreatment system. Certain operating conditions (typically, less than 200° C (392° F) SCR Inlet Temperature) such as continuous idle at low engine speeds and/or loads, can cause temporary reduced catalyst performance. After operating at continuous idle at low engine speeds and/or loads, an immediate return to higher loads, may result in catalyst damage due to rapid increase in exhaust gas temperature.Your power system is equipped with a strategy to protect the aftertreatment by regulating or limiting the available power to avoid such an event. Caterpillar has designed the Marine Engine and Aftertreatment system to operate safely without risk to the catalyst for 12 hours of low idle and/or continuous low load operation.While managing SCR Inlet temperature and applying load, your engine system safely removes accumulated HC while gradually allowing the system to return to full available power.The engine system protection strategy is always active during operation. In an emergency this protection can be overridden using the engine protection override feature. Throughout operation, the engine system may experience the following codes:SPN 2434-1 Engine Exhaust Manifold #1 Temperature #1: Low - Most Severe (3)
When SPN 2434-1 is active, this code requires the operator to follow the HC Release Procedure.Level 3 - The Level 3 Code indicates that