Chery A1 2008 Operating Instructions Manual page 144

150kPa, condenser and fins of radiator
will be damaged.
Fins of radiator are necessary
for good heat conduction. Do not brush
the fins; otherwise, they may be
damaged and heat conduction may be
reduced.
Never spray water onto hot radiator;
otherwise, the hot gas generated may
cause personal injury. Flush with water
only when engine does not work and is
cool.
Service and Maintenance