Volpi Tecno Energia PAGURO 8500, Руководство пользователя и по обслуживанию

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10 MAINTENANCE
Mod. PAGURO
6000/9000/14000/18000/6500/8500
Date: 12.03.2020_Rev: 0.0
10
10.5 MAINTENANCE PROCEDURES
The following paragraph provides specific procedures for servicing the generator.
Maintenance operations must be carried out with the generator in maintenance state by authorized technical
personnel.
WARNING! Replaced oils and specific elements (filters, etc.) must be disposed of in accordance with
the regulations in force. NEVER disperse in the environment.
WARNING! During the operations, the maintainers must wear Personal Protective Equipment, gloves,
accident-prevention shoes, overalls or other devices eventually needed by the law in force, according
to the type of the operations to do.
10.5.1 Replacing the sea water pump impeller
The raw water pump is a self-priming, rotary pump with a non-ferrous housing and a neoprene impeller. The
impeller has flexible vanes which wipe against a curved cam plate within the impeller housing, producing the
pumping action. On no account should this pump be run dry as water acts as a lubricant for the impeller. There
should always be a spare impeller and impeller cover gasket (an impeller kit) onboard. Raw water pump
impeller failures occur when lubricant (raw water) is not present during engine operation. Such failures are not
warrantable, and operators are cautioned to make sure raw water flow is present at start-up. The neoprene
impeller has a limited lifetime and must be inspected regularly.
If the impeller is damaged, replace it using the following procedure:
1. Close the raw water intake valve;
2. Remove the fixing screws and the pump cover;
3. Pull out the damaged impeller;
Impeller
4. Position the new impeller close to the pump body;
5. Move the blades to form the housing and push the impeller as far as it will go.
NOTE: Add some lubricant to the impeller and seal during assembly.
6. When the operation is complete, reopen the sea water inlet valve.