Argal ZMR 02.30, Use Manual

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14. system's resisting head is greater than expected
15. suction pipe, closing valve and other items have an insufficient nominal diameter
16. small geometric pump suction head
17. damaged or worn impeller
18. liquid viscosity greater than expected
19. excessive quantities of air or gas in liquid
20. elbow joints, check valves or other items on the outlet port
21. liquid (especially if hot) with tendency to change into gaseous state
Pump absorbs too much power: see 17
22. pump operates at greater capacity than expected
23. specific weight of liquid is greater than expected
24. impurities inside pump create abnormal wear
25. electric motor supply voltage is not rated voltage
Pump vibrates and is noisy: see 23
26. operates at full capacity (no head)
27. pump or pipes inadequately fixed
28. eccentric impeller operation because of worn bushes
28.support bearing without grease
Pump's internal parts wear out too quickly : see 23
29. liquid excessively abrasive
30. recurring cavitation problems (see. 02, 14, 18, 16)
31. high tendency of liquid to crystallise or polymerise when pump is not operating.
32. pump made of materials that are unsuitable for pumped liquid
33.
operation with capacity too reduced
12 TECHNICAL DATA