stellar labs HESB Series, Инструкция по установке, эксплуатации и обслуживанию

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Stellar Pump Australia
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14
Installation, Operation and Maintenance (IOM) Manual
SECTION X. TROUBLE SHOOTING
Problems Causes Recommended Solutions
No discharge flow 1. Trap air or leak at suction
pipe
2. Impeller clogged
3. Damaged shaft and impeller
1. Remove trap air or repair
leak. Prime properly the
suction pipe
2. Remove solid particles
3. Replace shaft and impeller
Pump loses prime while
operating 1. Insufficient NPSH
2. Trap air or leak at suction
pipe
1. Reduce suction lift
2. Remove trap air or repair
leak
Actual pump capacity and/or
head insufficient 1. Insufficient NPSH
2. Actual head greater than
expected
3. Trap air or leak at suction
pipe
4. Impeller direction wrong
5.
Small Impeller diameter
6. Impeller clogged
7. Wear ring defective
1. Reduce suction lift
2. Reduce valves & fittings or
replace bigger pump
3. Remove trap air or repair
leak. Prime properly the
suction pipe
4. Interchanged wires & cables
to reverse the rotation
5. Replace impeller but take
note BHP vs motor HP
6. Remove solid particles
7. Replace wear ring
Excessive noise and vibration 1. Trap air or leak at suction
pipe
2. Impeller direction wrong
3.
Misalignment
4.
Bearings operating dry
condition
1. Remove trap air or repair
leak. Prime properly the
suction pipe
2. Interchanged wires & cables
to reverse the rotation
3. Realign shaft. Use dial
indicator for checking of
alignment.
4. Apply oil or grease or replace
bearings
Bearings produce excessive heat 1. Misalignment
2.
Dirty
3. Operating dry condition
1. Realign shaft. Use dial
indicator for checking of
alignment.
2. Clean the bearing
3. Apply oil or grease
High current readings in electric
motor 1. Abnormal power voltage
2.
Impeller clogged
3. Misalignment
4.
Bearings operating dry
condition
5. Low or no motor Insulation
1. Use electric components to
stabilize the power voltage
2. Remove solid particles
3. Realign shaft. Use dial
indicator for checking of
alignment.
4. Apply oil or grease or replace
bearings
5. Rewind or replace the motor
Pump volute produces high
temperature 1. Trap air or leak at suction
pipe
2. Insufficient NPSH
1. Remove trap air or repair
leak. Prime properly the
suction pipe
2. Reduce suction lift