Metso 25411801001/A5684, Руководство по эксплуатации и техническому обслуживанию

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Slurry Pump
WH03AA1AAA0en_03b.doc JAN 04-W08
General
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During prolonged storage, it may prove difficult to rotate the pump rotor manually for
normal maintenance. In such cases proceed as follows:-
a) Loosen the bearing end covers which limit the axial displacement of the
bearings.
b) Move the pump rotor along its axis, thus freeing the assembly and allowing
manual rotation.
3. Storage in excess of two years
For prolonged storage in excess of two years in adverse ambient conditions, special
protection may be necessary. Any moisture absorbing devices used must be absolutely
effective and regularly maintained. Whenever possible for storage periods in excess of two
years, it is recommended that all pump components are disassembled, washed, dried,
protected and reassembled afterwards. This work may be done by
Metso Minerals and
charged to the purchaser under normal rates in force at the time the service is carried out.
1.2.5
Storage of spares
In general, unless otherwise instructed, keep all spares parts in a cool, dry environment
and protect rubberised/synthetic components from sunlight and high voltage electrical
equipment.
Rubber is affected by ageing and its rate of deterioration is dependent on the type of
rubber and the storage conditions. Rubber perishes most rapidly when exposed to heat,
ultra violet light and oxidants. The more commonly overlooked sources of which are
sunlight and electrical machinery. Rubber can become permanently deformed if
compressed out of shape during storage. Mineral oils, solvents, dust, contact with metals
and moisture can also damage rubbers depending on type.
Certain types of rubber such as chloroprene rubber (CR) harden at temperatures below
+5°C. In conditions of extreme cold these types of rubber harden to such an extent that
they could develop cracks and be damaged by handling. Chloroprene rubber does not
regain its normal hardness when the ambient temperature rises but has to be
reconditioned.