
9.3
External cooling water system
Fig 9-4
Example diagram for single main engine (MDF) (3V76C5775C)
System components:
Drain tank
4T04
Stand-by pump (HT)
4P03
Heater (preheating unit)
4E05
Expansion tank
4T05
Circulating pump (preheater)
4P04
Central cooler
4E08
Temp. control valve (heat recovery)
4V02
Stand-by pump (LT)
4P05
Cooler (reduction gear)
4E10
Transfer pump
4P09
Suction strainer (sea water)
4F01
Temp. control valve (central cooler)
4V08
Circulating pump (sea water)
4P11
Preheating unit
4N01
Air venting
4S01
Evaporator unit
4N02
Pipe connections:
HT-water airvent from air cooler
416
HT-water inlet
401
LT-water inlet
451
HT-water
402
LT-water outlet
452
HT-water air vent
404
LT-water from stand-by pump
457
Water from preheater to HT-circuit
406
LT-water air vent
483
HT-water from stand-by pump
408
Wärtsilä 32 Product Guide - a21 - 7 September 2016
9-5
9. Cooling Water System
Wärtsilä 32 Product Guide
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