Miller Electric CBI 801D - Manual (Page 34)

OM-166 941 Page 29
Removal of the device from the exhaust system is not
necessary for servicing. Proceed as follows to service
spark arrestor:
1. Stop the engine, and allow the exhaust system to
cool.
2. Remove the cleanout plug from the bottom of the
spark arrestor. If a crust has formed over the
hole, break it loose with a screwdriver or similar
tool.
3. Start the engine, and run it at idle rpm to blow col-
lected particles out the cleanout hole. If particles
are slow to discharge, momentarily cover the end
of the exhaust stack.
4. Stop the engine, and allow the exhaust system to
cool.
5. Replace and secure the cleanout plug.
8-12. RUN-IN PROCEDURE
WARNING: ELECTRIC SHOCK can kill.
•
Do not touch live electrical parts.
•
Stop engine before inspecting, connecting,
or servicing.
•
Do not leave live unit unattended when
engine is running.
•
Keep all panels, covers, and guards
securely in place while engine is running.
MOVING PARTS can cause severe injury.
•
Keep away from moving parts such as fans,
belts, and rotors.
HOT ENGINE PARTS can cause severe
burns.
•
Wear protective gloves and clothing when
working on hot engine parts or components.
CAUTION: LOW OIL LEVEL can damage
engine; ENGINE MAY USE OIL AND WETS-
TACKING may occur during run-in period.
•
Check oil level several times a day during
run-in period, and add oil if required.
•
See engine Owner’s Manual (Deutz
F4L-912 diesel engine) for run-in informa-
tion.
•
Do not idle engine longer than necessary
during run-in period.
•
Piston rings seat faster if engine runs at
weld/power rpm, and the welding generator
is kept loaded during the run-in period.
The run-in procedure for diesel engines is different than
those associated with gasoline engines. Diesel engines
must be run at near-rated load during the run-in period to
ensure proper seating of piston rings and to prevent
wetstacking. Wetstacking is an accumulation of un-
burned fuel and oil in the exhaust pipe. Wetstacking can
occur during the run-in period if the engine is left at idle
rpm too long, or the welding generator is not heavily
loaded.
If wetstacking occurs, complete one of the following pro-
cedures to dry the engine (see engine Owner’s Manual,
F4L-912 diesel engine). A resistance load is required to
fully load the generator during the run-in procedure. A
load bank or resistance grid may provide a constant load
for run-in, however, a load bank is preferred. If a load
bank is available, proceed with the run-in procedure pro-
vided in Subsection A. If a resistance grid is being used,
proceed to Subsection B.
A. Run-In Procedure Using Load Bank (Diagram
8-1)
WARNING: Read and follow safety infor-
mation at beginning of entire Section 8-12
before proceeding.
1. Stop engine.
IMPORTANT: Weld cables supplied with load bank may
be inadequate for run-in procedure. Use weld cables of
proper size with appropriate connectors to connect load
bank to generator (see load bank Owner’s Manual).
2. Connect cables from load bank to generator weld
output terminals observing correct polarity (see
Diagram 8-1).
3. Place all load switches in the OFF position.
IMPORTANT: If load bank requires 115 volts ac, it may
be connected to the welding generator auxiliary power
terminal strip, if applicable.
4. Place welding generator AMPERAGE & VOLT-
AGE ADJUSTMENT control in the minimum po-
sition.
5. Start engine as instructed in Section 7-6, and al-
low engine to warm up for approximately three
minutes.
6. Adjust load bank switches and generator controls
to provide a load equal to rated generator output.
For example, if rated generator output is 350 am-
peres, 40 volts at 100% duty cycle, adjust
switches until values indicated by load meters
equal rated generator output.
7. Allow engine to run under load for at least one
hour. Check engine and load bank meters after
the first five minutes and every 15 minutes there-
after to be sure equipment is operating properly.
8. After running engine under load for at least one
hour, remove load by shutting down load bank.
9. Allow engine to idle for approximately three min-
utes to permit internal engine temperatures to
equalize.