Urea Scr System - Hitachi ZAXIS 120-6 class Operator's Manual

K. Urea SCR System
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WARNING: Fill specified DEF/AdBlue® into the DEF/
AdBlue® tank.
If improper DEF/AdBlue® is refilled, fire or system
failure may result. If improper liquid is refilled in the
DEF/AdBlue® tank, consult your authorized dealer for
check or repair.
Specified DEF/AdBlue®
Refill DEF/AdBlue® which meets Japanese Industrial Standards
(JIS K2247), International Organization for Standardization (ISO
22241) or Deutsche Industrie Normen (DIN 70070). If improper
liquid (diesel oil, kerosene or gasoline) is refilled in the DEF/
AdBlue® tank, fire or system failure may result. The specified
DEF/AdBlue® is colorless and odorless solution (urea 32.5%,
water 67.5%) which begins to freeze at -11 °C. When storing
unused DEF/AdBlue®, it is recommended to store it within the
temperature range of -10 to 30 °C. It deteriorates down more
readily at 40 °C.
In some cases, specified area solution is referred to by one or
more of these names:
 Aqueous Urea Solution 32
 AUS 32
 NOx Reduction Agent
 Catalyst Solution
MAINTENANCE
7-156