Allweiler CNH-ML Series, Руководство по эксплуатации

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Troubleshooting
Fault number
1 2 3 4 5 6 7 8 9
Cause Remedy
– –
X
–
X X X
–
X Motor speed excessively high Compare required motor speed with
speci
fi cation on pump type plate.
Replace motor if necessary.
Reduce motor speed with speed control
if available.
– –
X
–
X X
– –
X Impeller diameter too large Throttle down fl ow rate at pressure-side
armature. Observe the minimum fl ow
rate limit.
Machine the impeller down. Consult
with manufacturer and adjust the
impeller diameter.
X X
–
X
–
X
– – –
Impeller out of balance or blocked Disassemble pump and inspect for
dry-running damage.
Clean the impeller.
–
X
–
X
–
X
– – –
Hydraulic components of the pump dirty,
clotted or encrusted Disassemble pump.
Clean the components.
– – – – –
X X
–
X Faulty antifriction bearing in bearing
housing Replace antifriction bearings.
– – – – –
X X
–
X
Sleeve bearing defective
Replace sleeve bearing.
– – – – – –
X
–
X Faulty antifriction bearing in motor Replace the antifriction bearing
(
→ manufacturer's speci fi cations).
– – – – – –
X
– –
Lubricant: too much, too little or unsuitable Reduce, top up or replace lubricant.
– – – – – – –
X
–
Connecting bolts not tightened correctly Tighten connecting bolts.
– – – – – – –
X
–
Faulty housing seal Replace housing seal.
– – – – – – –
X
–
Shaft sleeve has been penetrated Replace shaft sleeve and/or seal.
– – – – –
X X X X Pump distorted Check pipe connections and pump
fi xings.
Check coupling alignment.
Check
fi xing of support foot.
– – – – –
X X
– –
Coupling not properly aligned Align coupling.
– – – – –
X
– – –
Coupling unit worn
Replace coupling unit and realign.
–
X
–
X
–
X
– –
X Motor running on 2 phases
Check fuse and replace it if necessary.
Check cable connections and
insulation.
Tab. 13 Troubleshooting list
34 CNH-ML series BA-2017.02 en-US 160-276/0 – 550 406