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Horizontal End Suction Pump for Chemical Process, ASME B73.1-2001
Installation, Operation, and Maintenance Manual – CPP21
SECTION EIGHT – MAINTENANCE
To perform the maintenance of the CPP21 pump, no special (custom made) tools are needed.
• Before initiating maintenance procedures disconnect all power sources to the
equipment and discharge any parts which may retain an electric charge. Use
proper locks to avoid accidental start-up of the pump system. Failure to comply
may result in severe personal injury.
• When performing the maintenance of the pump, use the safety equipment
appropriate for the pumped fluid, materials, and location of the equipment,
such as gloves, safety glasses, harnesses and other equipment regarded as
mandatory by the plant’s safety instructions.
8.1 DISASSEMBLY
1. Stop the pump. See SECTION 7.5-STOPPING.
2. Drain all possible fluids from the pump case and power frames.
3. Disconnect any auxiliary piping and wiring that could interfere with disassembly.
4. Disconnect the driver-to-pump coupling and remove coupling spacer.
5. When disassembling the pump, match mark, tag or otherwise identify all parts, and provide separate
containers for small parts. Refer to the pump sectional drawing included in
SECTION TEN - PARTS
INFORMATION for proper identification of parts.
6. To separate pump cover from pump case, first remove the bolts, then use back-off screws in the taps
provided to break the cover-to-case gasket joint.
7. Remove the pump cover-power frame assembly by providing a chain or sling support for the assembly.
• Avoid bumping the impeller or the pump half coupling.
8. After removal, place the pump cover-power frame safely on suitable horizontal supports.
9. To remove the impeller, first free and remove the cover-to-case gasket.
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