Fayat Bomag CR 820 T Tier 4, Operating Instructions, Maintenance Instructions, Page: 89 / 130

7 Standard Operating Procedures
Date May 2020
Page 7-17
Operations Manual
CR 820 T
Adequate DEF Quality is essential to meet-
ing emission targets. If an issue with the DEF
Quality is detected, the ECM will warn the op-
erator by use of the DEF and/or WARN lamps.
Primary and Secondary Inducement de-rates
will follow soon after (see next 2 slides). Ideal
Quality DEF is 32.5% (+/- 1.5%) Urea and
77.5% Water. Quality is reported on the opera-
tor display as % Urea.DEF Fluid in the reservoir
must meet ISO Standard 22241-1, a.k.a. DIN
70027.The following conditions are optimal for
maintaining DEF Quality and shelf life during
prolonged transportation and storage:
• Storage Temperature between 23 °F
and 77 °F (-5 °C and 25 °C Store in
sealed containers (to avoid contamina-
tion)
• Avoid direct sunlight
Figure 7.28 - Aftertreatment DEF Related Inducements 1