ME Tier Ⅱ to Tier Ⅲ change over

一，转换前提条件:Before starting the SCR System from TierII mode to TierIII mode, ship must change over from High sulfur oil to Diesel oil ,and the sulfur should set to 0.01%.

二，SCR系统模式转换为“自动”:On ERCS MOP select SCR Mode ‘Auto’ mode。

三，两种状况下的操作步骤:
Tier Ⅱ and Tier Ⅲ have two positions can be selected and operated.

集控室控制下:
A：When Main Engine telegraph at in the ECR mode

Touch Engine Mode(Tier Ⅱ)，select Tier Ⅱ OR tier Ⅲ at bottom left of MOP

TierⅡ To TierⅢ and Tier Ⅲ to TierⅡ change over
驾驶台控制下:

主机Tll模式到Tlll模式的转换步骤（老轨、大管面试题）
B：When Main Engine telegraph at Bridge Control mode

Main engine telegraph muse be at bridge mode,touch the RCS main screen of ECS mode

The next screen has TierⅡ to TierⅢ or TierⅢ to TierⅡ change over

The following picture shows TierⅢ running,SCR is in dosing mode.

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