Vetus D-LINE VD4.120 Operation Manual page 82

6 Maintenance
65 Cleaning the heat exchanger
• Clean the tube of the heat exchanger; use a
pipe brush and fresh water to remove any
growth in the pipes.
• Then rinse the heat exchanger tubes with
clean water.
80
• Make sure that both surfaces of the after
cooler housing are free from dirt residues.
Cleaning the after cooler
• Clean the contact surfaces of the O-ring
and gaskets.