Flowserve IJ, Установка, эксплуатация и обслуживание

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IJ PUMP OPERATION AND MAINTENANCE MANUAL
BO2660-01 6-14
CAUTION
Application of excessive heat can cause part distortion and
damage. Application of insufficient heat can cause scouring
of the parts when attempting removal. Ensure that the part is
heated to the temperature specified in OPERATING
SPECIFICATIONS before removal.
2. To heat a part to its removal temperature specified in OPERATING SPECIFICATIONS,
proceed as follows:
a. To heat an impeller, spacer sleeve, or pressure reducing sleeve: use a torch with a number
10 Rosebud head and start at the outer rim of the part, applying even heat in a continuous
circular path to the center of the part until the part is heated to the temperature specified
in OPERATING SPECIFICATIONS. Keep the shaft cool using shop air, and do not heat
the hub or skirt of an impeller.
b. To heat a suction spacer or intermediate cover: use a torch with a number 10 Rosebud
head and make uniform passes around the outer surface where the cover or spacer meets
the cover that is to be removed, keeping this surface at the temperature given in
OPERATING SPECIFICATIONS. Do not heat the entire outer surface, and do not heat
the cover that is to be removed.
CAUTION
Do not allow the roll-and-heel bars to slip below the cutout
on the discharge spacer, intermediate covers, or suction
spacer, as this may damage the sealing faces of those
components.
3. When a part has been heated to its removal temperature, use two roll-and-heel bars 180
degrees apart on the outer edge of the part to remove it from its position with quick,
simultaneous prying motions.
WARNING
Use lifting gear when moving any part that weighs more
than 50 lbs. (22 kg) to prevent personnel injury and part
damage due to dropping.
Always ensure that hot parts are handled with soft cables
or hands protected by heat-resistant gloves to prevent
personnel injury.
4. Install lifting gear on part, if necessary, then lift part clear of assembly and set it aside.
Remove lifting gear.
5. Allow the shaft to cool to ambient temperature before disassembling the next stage.
6.4.6.2.2 Stage Number System And Balanced Parts
Each impeller key (25 or 112), split ring (545) (if installed), and impeller (28 or 34) is fitted for a
particular position on the shaft. To help match parts and stages, a number is stamped on the back of
each part. This indicates the number of the stage for which the part is fitted. The suction stage is