Initial operation
Cooling water system
A3.05.09.00
M20-M601C
en / 16.12.1997 BA000030 1/1
Ĺ
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 running.
If an engine is running on heavy fuel from pier to pier, preheating is absolutely necessary. The
starting 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.
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