- ページ 9
水ポンプ Armstrong 4280 SeriesのPDF 据付・取扱説明書をオンラインで閲覧またはダウンロードできます。Armstrong 4280 Series 10 ページ。 Motor mounted pump
Armstrong 4280 Series にも： 設置および操作説明書 (4 ページ), サービス作業指示書 (4 ページ), 据付・取扱説明書 (12 ページ)
ページを印刷する
symptoms
Bearings overheat
Pump delivery fails after start
Pump seized
Pump does not prime
Pump noisy
Motor overloading
Motor overheating
Series 4280
motor mounted pump
reasons
• Insufficient cooling to stuffing box.
• Misalignment of pipework.
• Dirt in bearings.
• Bearings too tight.
• Bearings badly installed.
• Suction line not filled.
• Air or vapour pocket in suction line.
• Inlet of suction pipe insufficiently submerged.
• N.P.S.H. available too low.
• Suction lift too high.
• Air leaks in suction line, gland or pump joints.
• Blocked suction.
• Impeller damaged.
• Pump not primed.
• Misalignment of pipework.
• Operation at low capacity
• Pump not primed.
• Inlet of suction pipe insufficiently submerged.
• Suction lift too high.
• Blocked suction.
• Incorrect rotation.
• Misalignment
• Air or vapour in suction line.
• Inlet or suction pipe insufficiently submerged.
• N.P.S.H. available too low.
• Air leaks in suction line, gland or pump joints.
• Blocked suction.
• Impeller damaged.
• Operation at low capacity.
• Rotating element out of balance.
• Shaft bent.
• Poor foundations.
• Operation at high capacity.
• Misalignment
• Speed too high.
• Low system friction.
• S.G. too high.
• Misalignment
• Speed too high.
• Low system friction.
• Pump liquid density is greater than anticipated.
in sta l l a t io n &
o pera t ing instr uct io n s
9