Trouble-Cause-Remedy
In the event of troubles we recommended to locate the cause using the
following chart:
Trouble
Cause -remedy.
Pump does not deliver
1 - 2 - 3 - 4 - 6 - 11 - 13 - 14 - 19 - 23
Capacity too small
2 - 3 - 4 - 5 - 6 - 7 - 8 - 11 - 13 - 14 -
17 - 19 - 20 - 23 - 29 - 31 - 52
Discharge pressure too small
4 - 5 - 11 - 13 - 15 - 17 - 19 - 29 - 31
Excessive power required
12 - 13 - 15 - 16 - 17 - 23 - 24 - 26 - 27
- 29 - 33 - 34 - 34 - 40 - 43 - 48 - 49 - 52
Excessive stuffing box leakage
10 - 24 - 26 - 32 - 33 - 34 - 35
- 36 - 38 - 39 - 47 - 48
Excessive stuffing box temperature
9 - 10 - 24 - 26 - 33 - 34 - 35 -
36 - 37 - 38 - 39 - 48
Excessive wear of packing
or mechanical seal
9 - 10 - 24 - 26 - 28 - 32 - 33 - 34 - 35
- 36 - 37 - 38 - 39 - 48
Excessive noise or
vibration of Pump
2 - 3 - 4 - 5
– 6 - 7 - 15 – 18 – 23 –
24 -25 - 26 - 27 - 28 - 31 - 35 -
36 - 40 - 42 - 43 - 44 - 46 - 49
Overheating or
excessive wear of bearings
12 - 14 - 15 - 16 - 17 - 18 - 24 - 25
- 26 - 27 - 28 - 30 - 36 - 38 - 40 -
41 - 42 - 43 - 44 - 45 - 49 - 50 - 51
Overheating and seizing of pump
1 - 4 - 18 - 19 - 21 - 22 - 24 - 25 - 27 -
28 - 35 - 36 - 40 - 41 - 49
Possible Reasons for Operating Troubles: Hydraulic reasons
1
. Pump not vented
2. Pump or suction line not completely filled with liquid
3. Suction lift too great, suction head too small
4. Insufficient margin between suction and vapour pressures
5. Excessive air on gas in the pumping liquid
6. Air pockets in suction line
7. Air inhaled into suction line
8. Air inhaled though stuffing box
