Flowserve CPM Series - Manual (Page 2)

2
Description
The CPM PX seal is a cartridge mounted mechanical seal, designed for
ease of installation and reliable operation. No seal setting dimensions
are required. Rotatable setting devices provide proper alignment. The
flexible stator design compensates for inadvertent misalignment of the
seal chamber face. Multiple springs provide uniform face loading and
are external of the pumpage, resisting clogging or hang-up. Installation
according to the following steps will assure long trouble free life of the
CPM PX seal.
1 Equipment Check
1.1 Follow plant safety regulations prior to equipment disassembly:
• lock out motor and valves.
• wear designated personal safety equipment.
• relieve any pressure in the system.
• consult plant MSDS files for hazardous material regulations.
1.2 Disassemble equipment in accordance with equipment
manufacturer’s instructions to allow access to seal installation area.
1.3 Remove existing mechanical seal and gland or compression
packing and packing gland.
1.4 Make sure the shaft or sleeve and the seal housing face are clean
and free of burrs, cuts, dents, or corrosion that might cause leakage
past the sleeve gasket or gland face gasket. See Figures 1 & 2.
Replace worn shaft or sleeve if it is worn in the sleeve gasket area.
Remove sharp edges from keyways and threads.
1.5 Check equipment dimensions to ensure that they are within the
dimensions shown in Figures 1 and 2. Critical dimensions include
shaft or sleeve OD (A), a chamber depth of at least dimension (G),
minimum and maximum seal housing bore (C), and the minimum
distance to the first obstruction (K). See Figure 2.
The images of parts shown in these instructions may differ visually from the actual
parts due to manufacturing processes that do not affect the part function or quality.