Orbit PP Series, Installation And Operating Instructions Manual

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19. TROUBLESHOOTING
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Gas in supply line
Insufficient head above supply vessel outlet
Foot valve strainer is obstructed or blocked
Product viscosity above rated figure
Product viscosity below rated figure
Product temperature above rated figure
Product temperature below rated figure
Unexpected solids in product
Delivery pressure above rated figure
Gland over tightened
Gland under tightened
Gland flushing inadequate
Pump speed above rated figure
Pump speed below rated figure
Stator turning
Flexible coupling misaligned
Belt drive slipping
Insecure pump driver mountings
Shaft bearings worn/failed
Discharge blocked or valve closed
Product entering packing area
Worn pumping element
Shaft wearing the seals
Frozen fluid in pump
Incorrect direction of rotation
Pump not primed
Insufficient NPSH available
Product vapourising in supply line
Air entering supply line
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Reverse the motor
Expel gas from supply line and pumping chamber and introduce fluid.
Increase supply line diameter. Increase suction head. Simplify supply
line configuration. Reduce speed. Decrease product temperature -
check effect on viscosity and power input.
As 3 above.
Remake pipe joints. Adjust or repack gland.
Expel gas from supply line and pumping chamber and introduce fluid.
Raise product level. Lower outlet position. Increase submergence of
supply line.
Service fittings.
Decrease pump speed. Increase product temperature.
increase pump speed. Decrease product temperature.
Cool the product pumping chamber.
Heat the product pumping chamber - check with Franklin Electric.
Clean the system. Fit a strainer in the system.
Check for obstructions. Service system and revise to prevent problem
recurring. Simplify delivery line.
Slacken and re-adjust gland.
Adjust gland.
Check that fluid flows freely into the gland. Increase flow rate.
Decrease pump speed.
Increase pump speed.
Replace worn parts. Tighten stator bolts.
Check flange alignment and adjust mountings accordingly.
Re-tension to manufacturer's recommendations.
Fit lock washers to slack fasteners and retighten.
Refer to Franklin Electric for advice and replacement parts.
Relieve the pressure and clear the blockage.
Check packings condition and type
Fit new parts.
Check for worn shaft and replace.
Allow for pump to thaw slowly. Ensure pump is drained in future.
Replace damaged parts.
ORBIT PP AGRICULTURAL INSTALLATION AND OPERATIONS MANUAL