Beta Marine Beta 14 Installation Manual page 67

Problem: Water in lubricating oil - general
Possible Cause
Core plug pushed out due to frozen block:
Water pump seal damaged:
Problem: Water in lubricating oil - heat exchanger cooled
Possible Cause
Oil goes "milky" due to seawater entering
exhaust manifold:
Problem: Engine overheats - general
Possible Cause
Low raw water flow:
Check coolant level:
Pressure cap loose:
Switch sender faulty:
Insufficient restrictions in pipe to calorifier:
High exhaust back pressure:
Keel cooler insufficient size:
Problem: Engine overheats - heat exchanger cooled
The most common cause of overheating is insufficient seawater flow due to a blocked intake. If this happens first clear
the debris, causing the blockage. If the problem is not cured then check the system for sea water flow which should
be 18 litres/minute minimum at 1,500 rpm as follows:
(a) With the vessel moored run the generating set engine. Hold an appropriate container under the exhaust outlet for
10 seconds and measure the amount of water collected*. Multiply this value by 6 to give the flow in litres/minute.
Repeat twice and take an average. If the flow rate is noticeably less than the 18 litre per minute minimum, then:
(b) Check impeller in sea water pump - if worn replace.
(c) If impeller has a vane missing then this will be lodged either in the pipe to the heat exchanger or in the end of
the exchanger. This must be located and removed.
(d) Check flow again as in (a).
*NB: This operation must only be done in safe conditions, in port with assistance. Always use appropriate personal
protective equipment, risk assess handling hot water and exposure to exhaust gas emissions.
Solution
Dealer or service agent to check and replace.
Dealer or service agent to check and replace.
Solution
Check installation - has an anti-syphon valve been fitted?
Change engine oil and run engine for 10 minutes each
time to eliminate any water. Get fuel injection pump and
compression checked by dealer or service agent.
Solution
See below.
Top up.
Tighten correctly or replace.
Replace.
Clamp off pipe to confirm.
Must not exceed the information given in 'exhaust back
pressure' in the installation section.
Contact boat builder.
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