Hyundai HL955 Manual page 580

※ Manual SCR system cleaning Manual SCR system cleaning
Safety button
1
2
SCR warning HEST warning
lamp blink lamp ON
SCR warning HEST warning
lamp lamp
OFF ON OFF
(18) (18)
HEST HEST (High exhaust system temperature) warning lamp
7609A3CD53
※
Manual SCR system cleaning applies if the machine is in a Manual SCR system cleaning applies if the machine is in a
fireproof area. fireproof area.
※
To stop a manual SCR system cleaning before it has com- To stop a manual SCR system cleaning before it has com-
pleted, set to the SCR system cleaning switch to the inhibit pleted, set to the SCR system cleaning switch to the inhibit
position or turn OFF the engine. position or turn OFF the engine.
①
Stop and park the machine.
② Pull the safety button and push the switch to position ② to
initiate the manual SCR system cleaning.
※
Refer to the page 7-66 for the SCR system cleaning Refer to the page 7-66 for the
operation. operation.
※
The engine speed may increase to 950~1050 rpm and The engine speed may increase to 950~1050
system cleaning begins and it will take approximately 20~60 system cleaning
minutes. minutes.
③
The SCR system cleaning warning lamp will blink and HEST
warning lamp will light ON during the SCR system cleaning is
operating.
④
The SCR system cleaning and/or HEST warning lamp will light
OFF when the SCR system cleaning is completed.
760F3CD129
warning lamp
①
This warning lamp indicates, when illuminated, that exhaust
temperatures are high due to SCR system cleaning.
②
The lamp will also illuminate during a manual SCR system
cleaning.
③
When this lamp is illuminated, be sure the exhaust pipe outlet
is not directed at any surface or material that can melt, burn, or
explode.
When this lamp is illuminated, the exhaust gas temperature When this lamp is illuminated, the exhaust gas temperature
could reach 800 could reach 800˚C [1500
melt common materials, and to burn people. melt common materials, and to burn people.
※
The lamp does not signify the need for any kind of equipment The lamp does not signify the need for any kind of equipment
or engine service; It merely alerts the equipment operator to or engine service; It merely alerts the equipment operator to
high exhaust temperatures. It will be common for the lamp to high exhaust temperatures. It will be common for the lamp to
illuminate on and off during normal equipment operation as the illuminate on and off during normal equipment operation as the
engine completes SCR system cleaning. engine completes SCR system cleaning.
7-29
SCR system cleaning switch
begins and it will take approximately 20~60
[1500˚F], which is hot enough to ignite or ], which is hot enough to ignite or
switch
rpm and SCR SCR