CENTRIFUGAL PUMPS WITH DOUBLE MECHANICAL SEAL |
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MECHANICAL SEAL - Can cause total shut down when they fail. No secondary containment is available. |
TIME-CONSUMING MAINTENANCE - Motor and bearing lubrication levels must be continually monitored. |
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SEPARATE MOTOR AND PUMP - Must constantly kept in proper alignment. Motor is exposed. A foundation is necessary to support the increased weight and reduce the danger of misalignment. |
ELEVATED NOISE LEVEL - Separate motor cooling fan is required. Rotating fan greatly contributes to noise increase. |
MAGNET DRIVE PUMPS |
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THIN CONTAINMENT SHELL - Subject to damage by magnets and subsequent leakage. No secondary containment. |
SEPARATE MOTOR AND PUMP - Must constantly kept in proper alignment. Motor is exposed. A foundation is necessary to support the increased weight and reduce the danger of misalignment. |
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MANY BEARINGS - All must be checked frequently for proper lubrication. Increased chance of bearing failure and pump shut down. Bearings with impeller shaft cannot be easily monitored. |
ELEVATED NOISE LEVEL - Separate motor cooling fan is required. Rotating fan greatly contributes to noise increase. |