JFD WHE - 3, Руководство по эксплуатации и обслуживанию

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20 KI-OM-0591 Rev 3
Maintenance
4 Maintenance
4.1 Routine Maintenance
Good maintenance practices are essential to ensure satisfactory operation and extend the
service life of the equipment. All steel and painted parts should be periodically cleaned and
repainted where necessary.
4.2 Periodic Maintenance
Periodic maintenance of the unit should be conducted in order to identify and replace worn
components. The following are components that must be inspected:
4.2.1 Belts
The drive belts should be checked for wear periodically depending on how often the machine
is operated. Belts may need to be replaced due to wear after periods of high duty or due to
deterioration after long periods spent out of service. Following periods where the unit has
been out of service, the pulley grooves should be checked for corrosion and all moving parts
should be thoroughly inspected. Belt tension should be checked regularly.
4.2.2 Inlet Filters
The inlet water filter elements should be checked following the first few hours of operation in a
new installation and after long periods spent out of service. Under normal working conditions
the filters should be changed when the pressure drop across the filter units rises about 1 bar.
The pressure drop across the filters is deduced by subtracting the outlet pressure indicated
on the filter gauge from the inlet pressure gauge. The two filters are arranged with valves to
allow the isolation of each filter for service. The unit is designed to run using a single filter.
4.2.3 Anode Plugs
Four zinc anodes are mounted in the heater tank. These provide sacrificial corrosion
protection to the system and will deteriorate. They should be inspected regularly and replaced
when necessary.
4.2.4 Heater Elements
Heater element cover plates should be removed to check for leaks and, if necessary, check
element insulation. To remove any elements use WHE-3 element socket, JFD part no.
DO05547.
Note Heated seawater is extremely corrosive and heater elements will not last
indefinitely. Always keep sufficient spare elements available.
4.3 Pump Maintenance
Helpful Information
(Refer to the Pump Specific Fault Diagnosis and Maintenance table in section 5.1. Refer to
Appendix B for the detailed pump manual)
4.3.1 Interpreting Pressure Readings
Abnormal pressure readings that are out of the specified range during normal operation may
indicate a fault or problem with the pump.