Hamilton Jet HJ241, Manual

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A.14
Appendix
HJ-241 / HSRX
3 Engine Running Checks (Vessel Moored):
Item
No.
Checks to be Carried Out Completed
3.1 The Water Bearing (Cutless Bearing) must operate wet unless the optional
Dry Run Kit has been fitted (Dry Run Kit available for HJ-212 to HJ-364 Jet
Units only).
For a Jet Unit fitted with a Dry Run Kit, the following applies:-
Maximum Dry Run Time of 3 minutes with engine speed not exceeding
1000 RPM. Minimum time between Dry Runs of 1 hour.
Do not operate the standard Jet Unit with the vessel out of the water, or
with the vessel ballasted such that the Jet Unit does not prime (pump water
properly) when the engine is started.
For jets specified with a water feed system for the waterseal and marine
bearing (specified on jets where the mainshaft is above the static waterline,
typically on multi-jet monohulls with high deadrise), check that water is
being supplied to the waterseal and marine bearing before running the Jet
Unit
3.2 Ensure the vessel is securely moored fore and aft and in deep clean water.
3.3 With the Reverse Controls set to "Zero Speed", the engine(s) may be started
and the engine suppliers representatives can carry out engine checks.
3.4 If the engine cooling water is taken from the Jet Unit offtake, confirm that
water is coming out of the engine exhaust outlets where possible. Periodi-
cally check that the engine is running at the correct operating temperature.
Check that the cooling water hoses are secure.
3.5 If the vessel is equipped with HSRC or HYRC and the pressure alarm
sounds, immediately shut the engine off and refer to the Controls Product
Manual to check adjustments. Failure to immediately shut down the engine
may result in serious damage to the hydraulic pump due to overheating.
3.6 Check for water leaks around the Jet Unit while the engine is running par-
ticularly under the Bearing Housing (Mainshaft Water Seal).
Failure to check cooling water
hoses may result in flooding of the
vessel.