T R O U B L E S H O O T I N G G U I D E
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| PROBLEM | POSSIBLE CAUSES | REMEDIES |
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| Pump/motor vibrates | Improper mounting | Confirm both the pump liquid |
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| end and motor module are |
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| firmly secured to a rigid |
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| structure. |
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| Starved suction line | QSV pumps must be fed with |
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| positive pressure [at least |
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| 20 psi (1.4 bar). Check to |
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| make sure there are no |
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| obstructions, constrictions, |
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| high points, or clogged filters |
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| ahead of the pump. |
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| Operating off the | QSV pumps must operate in |
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| performance curve | the flow range specified by |
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| the performance summary |
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| table or the pump perform- |
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| ance curve. |
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| Pump leaks | Piping not properly sealed | Seal threaded fittings with |
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| Teflon tape. Make sure gas- |
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| kets are properly seated in |
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| Victaulic or flanged fittings. |
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| Replace the | |
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| motor module damaged | or return the pump to the |
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| factory for repair. |
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