Northern Lights Lugger M673D, Руководство оператора

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OM673 09/09
Servicing
SP14. COOLING SYSTEM FLUSHING
1. Flush the cooling system every 600 hours or every
12 months, whichever comes fi rst.
2. Marine sets:
a. Remove expansion tank cap and drain engine
block.
b. Leave all drains open.
c. Pour clean water into expansion tank until water
coming from drains is free of discoloration and
sediment.
d. Let water drain completely.
e. Close drains and refi ll with recommended
mixture.
NOTE: Open sea cock before running engine.
3. Industrial sets:
a. Remove radiator cap and open drain cocks on
radiator and engine block.
b. Pour clean water into radiator until water coming
from radiator is clear of discoloration.
c. Close the radiator drain and continue fl ushing until
water from engine drain is clear.
d. Open all drain cocks and drain completely.
e. Close drain cock and refi ll with recommended
coolant mixture.
f. Clean fi ns on radiator.
4. Coolant Specifi cations (marine and industrial):
Use 50% water / 50% ethylene glycol antifreeze
mix. Antifreeze mixture is recommended as a good
year-round coolant.
5. Check hoses and connections and repair any leakage.
SP15. HEAT EXCHANGER
1. Clean the heat exchanger core once a year or after
2400 hours of operation.
2. Drain expansion tank and heat exchanger.
3. Remove heat exchanger end covers and remove
core.
4. Clean the inside of exchanger core tubes using
a metal rod. Flush, inspect and clean again if neces-
sary.
5. Reassemble. Fill the cooling system, start the engine
and check for leaks.
SP16. RAW WATER PUMP
1. Change the seawater pump impeller every 1000
hours, or as needed.
2. Remove the pump end cover. Pry out the impeller
using needle-nose pliers or two screwdrivers.
Be sure you remove all pieces of failed impeller.
NOTE: Place some kind of protection under the
screwdrivers in order not to damage the pump
housing.
3. Clean the inside of the housing.
4. Press in the new impeller and place the sealing
washers in the outer end of the impeller center if this
has not already been done.
5. Replace the cover using a new gasket or o-ring.
NOTE: Make sure that there is always an extra
impeller and cover gasket in reserve on board.
GENERATOR ENDS
The maintenance and operation recommendations
for the generator end are located on pages 19-22
under the heading “AC Generator”.
ELECTRICAL SYSTEM - GENERAL
1. Never switch battery switch off or break the circuit
between the alternator and batteries while the engine
is running. Regulator damage can result.
2. Do NOT reverse the polarity of battery cables when
installing the battery.
3. When welding on the unit, disconnect the AC and
DC voltage regulator and battery. Isolate the leads.
4. Disconnect the battery cables when servicing the
D.C. alternator.
5. Never test with a screwdriver, etc., against any ter-
minal to see if it emits sparks.
6. Do not polarize the alternator or regulator.
7. A D.C. circuit breaker protects your control panel
and wiring harness. It is located in the side of the
generator junction box.
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