4.15.3.3 Control box E50
The control box E50 is installed on the engine and has switches below the LDU-20.
Fig 4-36 Control box E50
Legend
001 LDU-20 003 SCR bypass switch
002 Option SPC - SPC bypass switch
4.15.3.4 Messages of the HP SCR control system
The HP SCR control system gives three messages to the alarm and monitoring system (AMS).
The messages are as follows:
•
SCR ON
This message shows that the HP SCR system is set to ON.
•
SCR minor failure
This message shows a failure that does not have an effect on HP SCR system operation.
•
SCR major failure
This message shows a failure that has an effect on HP SCR system operation. The HP
SCR control system stops the HP SCR system operation and changes to Tier II mode.
4.15.4 LDU-20 pages
The LDU-20 panel has the pages that follow (examples).
X92DF
AA00-9270-00AAA-043A-A
Operation Manual HP Selective catalytic reduction system
Winterthur Gas & Diesel Ltd.
- 132 - Issue 002 2020-08
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