Nanni Q1100 Series, User Manual

Page: 63 / 98

63
S 07 MAINTENANCE
TIGHTENING OF SCREWS, CLAMPS AND
RAW WATER AND COOLANT HOSES
IMPORTANT!
Check that the hoses are properly attached at the first
service visit, then every 250 hours of use or annually,
whichever comes first.
• If the hose clamps are loose, apply oil to the
threads and tighten them securely.
• The hoses are made of rubber, in contact with
heat, oil, fuel, etc. .... and tend to age. They should
be inspected and replaced if necessary. If cracks
appear, replace them immediately. Also replace
the clamps and tighten them firmly.
CAUTION!
To avoid serious damage to the motor, prevent dust and
foreign objects from entering the pipes.
RAW WATER PUMP IMPELLER REPLACEMENT
CAUTION!
Before replacing the seawater pump impeller, make sure
that the seawater valves are all closed and that the motor
is stopped.
• Close the seawater suction and discharge valves.
• Unscrew and remove the 6 cover screws (1) and
the cover (2) of the seawater pump.
• Remove the paper seal and clean the contact sur-
face.
• Remove the impeller (3) from the seawater pump
with pliers.
• Inspect the inside of the pump for wear and de-
bris. Replace worn components as necessary.
• Replace impeller shaft seal if necessary.
• Lubricate the lip seal with glycerin (do not lubri-
cate the mechanical seal).
• Lubricate the inside of the pump with the glycerin
included in the kit.