Volvo Penta TAD560VE Operator's Manual page 82

Maintenance
80
4 Fill the cooling system with 15-20 % mixture of
concentrated coolant. Use only Volvo Penta
recommended concentrated coolant mixed with
clean water.
5 Drain the coolant after 1-2 days of operation.
Remove the filler cap and possibly the lower
radiator hose to increase the speed of emptying.
To prevent suspended material from settling back
in the system emptying should be done rapidly,
within the space of 10 minutes, when the engine
has not been standing still for a long time.
6 Flush the system immediately and thoroughly with
clean hot water to prevent dirt from settling in the
inner areas. Flush until the water that runs out is
completely clean. Make sure that any heater
controls are set to full heating during emptying.
7 If contamination should still be left after a long
period of flushing, cleanout using Volvo Penta
radiator cleaner, followed by finishing-off with Volvo
Penta neutralizer. Carefully follow the instructions
on the package. Otherwise, continue as in item 8
below.
8 When the cooling system is completely free from
contamination, close the drain taps and plugs.
9 Fill up with Volvo Penta recommended coolant,
following the instructions in the chapters entitled
Maintenance, page 76 and Coolant Level,
Checking and Topping Up, page 77.
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