Hitachi EX1900-5 Operator's Manual page 212

Clean Outside of Radiator
--- twice a year (in spring and autumn)
Clean the outside of the radiator with radiator cleaner to
remove built up rust and scale to extend the radiator life.
Clean Radiator Core
--- every 500 hours
Clean Intercooler Core
--- every 500 hours
CAUTION: Always wear safety glasses or gog-
gles when using compressed air (Less than 0.2
2
MPa, 2 kgf/cm , 28 psi) to clean radiator core.
IMPORTANT: Compressed air or water can damage
fins. When cleaning the radiator core
with compressed air or water, keep the
nozzle 500 mm (20 in) or more away from
the core face in order not to cause any
damage.
The radiator is positioned along with the intercooler in se-
ries. In case the radiator/intercooler cores become ob-
structed with dust, dirt, or foreign material, clean the cores
with compressed air [less than 0.2 Mpa (2 kgf/cm
water to prevent a reduction in the cooling system perform-
ance.
MAINTENANCE
2
)] or tap
7-80
M18C-07-038