Donjoy DJ-JZ1-130, Руководство по эксплуатации и обслуживанию

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JZ1 SERIES PUMP
11.2 Common fault and eliminating methods
work breakdown Common cause of failure Solution
pump chamber is not filled with liquid filling of liquid
No flow or unstable flow
outlet valve is closed open outlet valve
inlet pipe is closed or blocked open inlet piping or wash
pump stuck
clean the pump chamber and check
if there is any foreign body entering
medium viscosity is too high to be inhaled
Increase inlet pipe diameter and
shorten pipe length
model of the pump is too small contact Donjoy
Flow and discharge too
small
wrong direction of motor rotation Adjust motor steering
transport medium viscosity is too high, poor
liquidity Increase inlet pipe diameter and
shorten pipe length
too low speed (wrong voltage)
check power supply voltage
according to motor nameplate
hard object in the pump chamber exclude foreign body
Noise and vibration Impeller scratches check impeller clearance and adjust
suction line resistance is too large
Increase inlet pipe diameter and
shorten pipe length
pipe weight and pressure act directly on the
pump add pipeline support to eliminate
resonance
Sudden increase in shaft
power
too high viscosity of conveying medium contact Donjoy
bearing or motor damage check and repair
Damaged mechanical seal(wear) change mechanical seal
Mechanical seal leakage
mechanical seal dry rotation, medium
temperature is too high Double mechanical seals are
recommended
corrosion of mechanical seal material contact Donjoy
flushing circulation line is blocked cause dry
rotate
check and repair
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