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6 Maintenance
Coolant replacement
Every 1000 operating hours.
50 Coolant replacement
The coolant has to be replaced every 1000
operating hours or at least once every two
years.
N.B. Replacing the coolant may also be
necessary as part of the winter storage
procedure; in case that the coolant present
in the cooling system offers insufficient
protection for the winter.
D
anger
Be aware of the risk of skin burning dur-
ing draining the hot coolant! Used coolant
must be collected in a container for proper
disposal according to laws and regula-
tions.
W
arning
Cooling system protec-
tive liquids must be dis-
posed of in accordance
with environmental regu-
lations.
Summary of Contents for DT4.70
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