Technical information

Metering pump use in the possible faults, causes and solutions

Serial number

Therefore,   With disabilities

The original         Because

Row   In addition to   Party   Method

1

Motor not

Start

1 . Power supply no power

2 . Power one phase or two phases power cuts

3 . Low voltage or overload device open.

1 . Check the power supply

2 . Check the fuse and contact points is good

3 . Check the power supply and voltage, Check the overload device location

2

Do not discharge or discharge

Insufficient liquid

1 . Suction tube blockage or suction line valve is not open

2 . Suction pipe leaks

3 . The suction pipe is too small, the lack of inlet flow

4 . The suction pipe is too long, sharp

5 . Suction valve and discharge valve is damaged.

6 . Valve fall into debris, Make the valve seal is not strict

7 . Liquid cavitation erosion cavity gas or media memory

8 . Diaphragm Chamber RAM air

9 . Fill valve group or divide such as leaking, leaking oil

10 . Safety valves, fill valve movement is not normal

11 . Oil has impurities in the oil supply system, valves are mat, seals is not strict

12 . Piston filler leaked seriously

13 . Insufficient motor rpm or unstable

14 . Inhalation of liquid level too low

15 . Diaphragm safety valve pressure relief, Diaphragm fuel oil shortage

1 . Check the suction tube, filter, open the valve

2 . Air leakage site seal

3 . Increase the diameter of suction tube or increase imports flooding the pressure head

4 . Bold the suction pipe, reducing the number of teasers

5 . Check the valve tightness and, if necessary, for valve and valve seat

6 . Suction pipe filters, preventing debris from entering

7 . Avoid inhaling gas corrosion, increased discharge exhaust pipe

8 . Fill valve oil and exhaust gas

9 . Find the leak site and sealing

10 . Readjust

11 . For clean oil

12 . Adjustable packing gland or replace with new packing

13 . Stable speed

14 . Adjust the inhalation of liquid height

15 . Adjust the safety valve pressure, Diaphragm fuel oil.

3

Pump pressure is not stable

1 . Loss of suction and the discharge valve ring

2 . Piston fill serious leakage

3 . Lax diaphragm or the discharge pipe joint sealing

4 . Safety valve or fill valve malfunction

1 . Replacement valve

2 . Adjustable packing gland or replace with new packing

3 . Find the leak site seal

4 . Check and adjust the valve group

4

Accuracy reduced

1 . Safety valve or fill valve malfunction

2 . Plunger zero offset

3 . Adjust table fails, Does not correctly display range

1.  Check and adjust the valve group

2.  Resize column zero point

3 . Repair or replace the adjustable scale

5

Pump body or conveyor overheating

1.  Driving mechanism in the tank too much oil Or less

2.  Oil with impurities

3 . Moving parts lubrication well

4 . Packing too tight

5 . Discharge pressure too high, motor overloaded

1.  Oil suitable for

2.  Oil change,

3 . Check to clean the oil holes

4 . Adjust the packing gland

5 . Check the discharge pipe And process pressure-rise The cause of high

6

In the pump impulse noise

1 . The gap between moving parts wear

1.  Valve lift is too high

2.  Save gas pump Chamber or cavitation

3.  Diaphragm fuel save gas

4.  Diaphragm fuel oil

5. N -Shaft or worm bearing damage

1 . Adjust or replace parts

2 . Adjusting the lift height to avoid lag of the valve

3 . Preventing cavitation or suction side air intake, Pump outlet port exhaust

4 . Fill valve manual oil exhaust

5 . Drain excess oil

6 . Replace the bearing

 

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