Iom 850 Series, Инструкция по установке, эксплуатации и обслуживанию

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GRS-17000-E-01
850 SERIES
TROUBLESHOOTING
Problem Possible Cause Remedy
No liquid delivered
Pump not primed
Re-prime pump, check that suction
line is full of liquid
Suction line obstructed Remove obstruction
Impeller clogged Remove obstruction
Wrong direction of rotation Check rotation, change if necessary
Foot valve or suction pipe has
inadequate submergence
Check suction source for vortexing,
correct as necessary
Suction lift too high Review/revise level on suction
Pump does not produce rated flow or
head
Air leak through gasket Replace gasket, tighten connections
Air leak through stuffing box
Inspect packing/mechanical seal,
add pressurized flush if necessary
Impeller partially clogged Remove obstruction
Inadequate suction head Review/revise design
Worn or damaged impeller Inspect/replace as necessary
Wrong direction of rotation Check rotation, change if necessary
Pump starts then stops pumping
Pump improperly primed Re-prime pump
Air or vapor in suction line
Review/revise suction piping to
eliminate air pockets
Air leak in suction line Check gaskets, repair leak
Pump is noisy or vibrates
Partial impeller clog/imbalance Remove obstruction
Broken or bent impeller or shaft Replace as necessary
Foundation not rigid Tighten hold-down bolts
Suction and/or discharge piping not
anchored correctly
Review design, modify as necessary
Pump cavitation
Review suction system, correct
problem(s)
Seal leakage
Shaft sleeve scored, ridged Replace as necessary
Worn mechanical seal Replace as necessary
Rotating seal face is not contacting
stationary seal face
Inspect shaft sleeve and ensure that
the rotating mechanical seal assembly
can slide
Excessive power required
Actual head lower than design
Throttle discharge valve slightly, trim
impeller. Review design
Liquid heavier than expected Review design
Rotating parts binding Check pump internals