1, pumps for water
Causes: injection pump enough water, spins right impeller blockage.
Troubleshooting: pump again injected, transmission through impeller, adjust the direction of rotation.
2, pump flow insufficient
Cause: the pump part of the blockage, RPM is too low, the total lift rating above the pump impeller damage.
Exclude reasons: clean the pump and pipe, replace the impeller, increased water pump shaft rpm, adjust the outlet valve.
3 export pressure is not enough reason and solution
Reason: liquid air, speed is too low, and impeller damage, outlet valve opening is too large.
Exclude reasons: remove liquid in the air, increasing the number of pump, replace the impeller, turn down the outlet valve.
4, power consumption of the pump is too large (heat) with
Reason: mechanical defects such as working space is too small, bend the motor shaft, bolt, pump flow too much work under pump work in a much lower than rated lift.
Exclude reasons: check the mechanical parts adjust, adjustment near the outlet valve rated flow and head of the pump working
5, the pump vibrates.
Reason: bad piping systems supported, partially blocked causing the impeller unbalance, cavitation, liquid air to exclude reason: check the support sector, tighten the nut, lost through impeller equilibrium, to exclude air.
6, pump holes
Causes: loss of mechanical seals, O-rings damaged pump is leaking.
Troubleshooting: replace the mechanical seal and o-rings, welded pump leaks.
7, the cause of excessive pump noise and the solution
Reason: bearing overheating fuel pump overload.
Exclude reasons: bearing of refueling, press 4 to exclude.