MAK M43C Operating Instructions Manual page 78

M20-M601C
Cooling water system
• Fill the cooling water system via the expansion tank. It is required that the cooling water has a level of
corrosion protection (see A4.05.09.nn).
• Set the correct position of the isolating and changeover cocks and/or valves on the cooling water
system, see book C.
• Switch on the fresh water standby pump and check the system for leaks.
•
If there are cocks or valves in the cooling water piping on the engine, for draining individual cooling
water spaces for repair (e.g. cylinder head, turbocharger etc.), check whether these cocks or valves
are open, so that there will be no heat accumulation in the parts to be cooled.
• Unless connected to a permanent venting arrangement, all components and pipes belonging to the
system must be consecutively vented. The vent pipe from the engine to the header tank generally
has a stop valve to throttle the water flow. While the engine is running, a sufficient permanent venting
must be ensured.
• Preheat the engine in good time before starting: Switch the preheater and circulating pumps on or
open the isolating valves if the cooling water circuit is connected with the circuit of the engine run-
ning.
If an engine is running on heavy fuel from pier to pier, preheating is absolutely necessary. The star-
ting performance is better with distillate fuel. Water condensation is avoided and the time needed
until the engine has been warmed up to normal working temperature is considerably shorter.
For preheating temperature see A3.05.18.nn.
For pressures and temperatures see A1.05 an A1.06.
en / 16.12.1997
Initial operation
Cooling water system
BA000030
A3.05.09.00
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