Systems and scheduled
maintenance
Solé, S.A. C-243 b, km 2 · 08760 Martorell (Barcelona) ·Tel. +34 93 775 14 00 · www.solediesel.com · [email protected]
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Marine diesel engines. Operator’s manual
5.6.
Cooling system
The engine cooling system is based on coolant circulation controlled by centrifugal pump with
thermostatic control and heat exchanger, where the coolant is refrigerated by sea water. Moreover,
the exhaust manifold is cooled also by sea water.
Coolant specifications
It is recommended use SOLÉ DIESEL 50% coolant or another coolant with similar
specifications. On the other hand, distilled water with an anti-freezing agent is also suitable. The anti-
freezing agent concentration according to operating conditions is specified in anti-freezing agent
package labels. It is advisable select the anti-freezing agent concentration based on a temperature
approx. 5ºC under the actual atmospheric temperature.
Other engine coolants may affect warranty coverage, cause an internal build-up of rust and
scale and/or shorten engine life.
Never mix different types of coolants. This may adversely affect the properties of the engine coolant.
Maintenance task. Coolant check
Allow the engine to cool. Release pressure from the cooling system before removing the
pressure cap. To release pressure, cover the pressure cap with a thick cloth and then slowly turn the
cap counterclockwise. Remove the cap after pressure has been completely released and the engine
has cooled. Check the coolant level at the tank, the level must be approximately 3/4 full.
Coolant circuit capacity (l)
MINI-17
2,7
MINI-29
3,0
MINI-33
5.7
MINI-44
8,0
MINI-55
8,0
Thermostatic valve
Initial opening 76,5ºC
Final opening 90ºC
COOLANT CIRCUIT DESCRIPTION
PIECE ELEMENT
1
Coolant pump
2
Heat exchanger
3
Thermostat
SEAWATER CIRCUIT DESCRIPTION
PIECE ELEMENT
1
Bottom cock (supplied as accessory)
2
Sea water filter
3
Sea water pump
4
Heat exchanger
5
Wet exhaust elbow
