Torishima Pump MMO, Руководство по эксплуатации

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5. 4. Leak from pump ( leak from other than gland )
Possible Cause Remedy / Corrective Action
1. Insufficient tightening torque of mounting
bolts.
Retighten them with uniform tightening torque after complete
shutdown internal pressure drop and complete cool-down of the
pump.
2. O-rings. Retighten the bolts.If fluid still leaks even after retightened, replace
O-ring with new one.
3. Rapid change of fluid temperature. Rapid temperature down would cause eventual leak from the pump.
Accordingly, check whether or not fluid leaks from the pump even
after the temperature rises up to normal degree. If still leaked, it will
show fault of O-ring. When fluid still leaks even after the bolts
retightened, take corrective action in the above item-2.
5. 5. Leak from gland packing
Possible Cause Remedy / Corrective Action
1. Wear or imperfection or improper insertion
of packing rings.
Re-insert the packing rings.
2. Damage of packing sleeve caused by over-
clamped or irregularly clamped gland.
Re-polish or replace the sleeve. After replacement of the packing,
tighten carefully the gland nut.
3. Unsmooth rotation of pump, so called,
swing of the shaft.
Unsmooth rotation of the shaft cause leak from the gland. In such
event, check carefully gap in the bearing and replace it with new one
if necessary. If fluid still leak even after replacement, overhaul the
pump to find out faulty part.
5. 6. Overheat of bearing
Possible Cause Remedy / Corrective Action
1. Imperfect centering of pump and driver
(motor).
Check the centering and leveling state.
2. Abnormal piping load acts on the pump. Modify properly the piping to remove abnormal load on the pump,
and make re-centering.
3. Inaccurate clearance between coupling
halves.
Adjust it to the value shown in the drawing.
4. Damage of bearing or deterioration of
grease.
Replace the bearing or grease with new one.