ITT Goulds 3655, Инструкции по установке, эксплуатации и обслуживанию

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6 Trouble check list
6.1 No liquid delivered
1. Priming -c asing and suction pipe not completely filled with liquid.
2. Speed too low.
3. Discharge head too high. Check total head (particularly friction loss).
4. Suction lift too high (suction pipe may be too small or long, causing excessive friction loss).
Check with vacuum or compound gauge.
5. Impeller or suction pipe or opening completely plugged.
6. Wrong direction of rotation.
7. Air pocket in suction line.
8. Stuffing box packing worn - or liquid seal plugged - allowing leakage of air into pump casing.
9. Air leak in suction line.
10. Not enough suction head for hot or volatile liquids. Check carefully as this is a frequent cause of
trouble on such service.
*1 When connected to electric motors, check whether motor wiring is correct and receives full voltage.
When connected to steam turbines, make sure that turbine receives full steam power.
6.2 Not enough liquid delivered
1. Priming-casing and suction pipe not completely filled with liquid.
2.
*1
Speed too low.
3. Discharge head higher than anticipated. Check total head (particularly friction loss).
4. Suction lift too high (suction pipe may be too small or long, causing excessive friction loss).
Check with vacuum or compound gauge.
5. Impeller or suction pipe or opening partially plugged.
6. Wrong direction of rotation.
7. Air pocket in suction line.
8. Stuffing box packing worn - or liquid seal plugged-allowing leakage of air into pump casing.
9. Air leak in suction line.
10. Not enough suction head for hot or volatile liquids. Check carefully as this is a frequent cause of
trouble on such service.
11. Foot valve too small.
12. Foot valve or suction pipe not immersed deeply enough.
13. Mechanical defects:
1. Impeller clearance too great.
2. Impeller damage.
*1 When connected to electric motors, check wether motor wiring receives full volatage. When connect-
ed to steam turbines, make sure that the turbine receives full steam pressure.
6.3 Not enough pressure
1.
*1
Speed too low.
6 Trouble check list
20 3655 Installation, Operation and Maintenance Instructions