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Trouble Shooting for the Abnormal Noise on a Fuel Dispenser Pumping Unit

Mac 3 2021-11-12 10:56:04
If you hear an abnormal noise from a fuel dispenser pumping unit, you shall check the followings:
a. Whether the inside fuel dispenser filter is blocked. If it is blocked, clean it.
b. Whether the fuel dispenser bypass valve works in a normal condition.
c. Whether the noise is loud or light again and again. Please follow the way in the following abnormal flow rate trouble shooting.
d. Whether the fuel dispenser motor and pump do not connect smoothly. Please check.
e. Whether any foreign dust is inside the fuel dispenser pump. Please check. 
f. Whether the pressure in the fuel dispenser pump is too high.