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Note the pre-installed penetration plate (item 12) in the forward right corner of the enclosure
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frame top. Reference the plumbing diagram in the mounting and exhaust sections of the IM1000
installation manual.
CAUTION: GENERATOR SETS WITH WET EXHAUST THAT ARE INSTALLED NEAR OR BELOW
THE VESSEL'S WATER LINE MUST USE A SIPHON BREAK TO PREVENT BACKFLOW OF WATER
INTO THE ENGINE. THIS BACKFLOW CAN RUIN AN ENGINE AND, POSSIBLY, SINK THE
VESSEL. The penetration plate (item 12) facilitates the siphon break installation as follows:
Start the generator set and run under load to check for leaks of fuel, water, or exhaust gas.
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a. Disconnect the hose from the seawater pump output and from the rubber elbow on the
expansion tank. Install two lengths of 3/4" hose. The hoses must be of adequate length
to allow mounting of a siphon break a minimum of 12 inches above the vessel's loaded
water line.
b. Pass the seawater pump output hose through the hole in the penetration plate closest
to the front of the shield. The hose from the expansion tank must go through the hole in
the penetration plate closest to the side of the shield.
c. For more information, see the "Exhaust" section of the IM-1000 Installation Manual
included with the generator set.
L612 02/05
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