|
barriers |
Causation |
Ways of exclusion |
|
|
1．air
leaking in water inlet pipe or seal |
1.examine the water
inlet pipe to exclude leaking and exhaust all of the air in it |
|
no |
2．the
pump upside down |
2．examine
and correc |
|
water 0ut |
3．the
water inlet pipe is too long |
3．shorten
the pipe |
|
4．the
suction lift is too high |
4．reduce
the suction lift |
|
|
|
1．jam
in the filter tube or Vane wheel |
1．examine
and remove the stemming |
|
not |
2．serious
abrasion of the seal ring |
2．change
the seal ring |
|
enough |
3．the
lift is too high |
3．reduce
the lift |
|
outlet water |
4．air
leaking in water inlet pipe |
4．examine
and repair the water inlet pipe |
|
5．the
suction Iift iS too high，partial cavitation occured |
5．reduce
the installed height of the pump and shorten the
water inlet wireline |