Pneumatic diaphragm pump detection troubleshooting methods

First, the pneumatic diaphragm pump can not start or move slowly 1, check the filter, pressure and lubrication devices and air inlet filter is blocked.

2, check whether the air valve stuck by impurities, please remove the valve and clean it, check whether the valve piston scratches. If the piston surface is bright and not black, it means that worn piston and "O" rings need to be replaced. Traces of injury. If the piston surface is bright and not black, it means that worn piston and "O" rings need to be replaced. Please re-replace the new 3, check the spindle and "O" ring for scratches, wear and crushed traces, if damaged, please replace.

Second, the pneumatic diaphragm pump in operation but the flow is too low 1, check whether the pump cavity plaque, adjust the compressed air inlet pressure. Reduce the pump speed to adjust the viscosity and concentration of liquid.

2, check the valve ball is stuck. If the delivery of liquid and valve ball material does not match. The ball will be swollen Please replace the ball and seat of the suitable material.

3, please check whether the inlet pipe is blocked.

Third, liquid leakage from the gas chamber discharge port 1, please check the diaphragm is broken.

2, check the diaphragm is installed and locked properly.

Fourth, the export liquid contains a lot of bubbles 1, please check whether the rupture of the diaphragm.

2, check whether the pump body and pipeline leak.

Hydraulic Pump Parts ,hydraulic main pumps parts are used widely in machinery field .Our main hydraulic pumps parts brand is for Kawasaki hydraulic pumps ,rexroth hydraulic pumps ,Nachi hydraulic pumps are used for excavators: Komatsu ,Hitachi ,Hyundai ,Kobelco,Summitomo...

We have follows model hydraulic pumps:

For Volvo Excavator hydraulic main pump parts:

EC240B ,EC360BLC,EC75,EC110,EC120,EC160,EC320B,EC210,EC280,EC290B,EC330,EC420,EC240BLC

For Komatsu excavator main hydraulic pump parts:

PC20,PC25,PC18,PC30,PC40,PC55,PC50UR,PC60,PC75,PC78,PC90,PC100,PC110,PC120,PC130-6,PC140,PC150-5,PC160,PC180,PC200-6,PC220,PC210,PC230,PC240,PC260,PC280,PC300,PC320,PC360,PC380,PC400,PC420,PC450-7

For Kobelco excavator main pump, Kobelco Hydraulic Pump parts:
,SK30,SK45,SK80,SK50,SK120,SK60,SK75UR,SK07,SK09,SK100,SK210,SK220,SK380,SK310,SK450,SK230,SK260,SK280 ,SK250,SK07-N2,SK320,SK330,SK360

For Hyundai excavator hydraulic main pump,Hyundai hydraulic pump parts: R55,R60,R75,R110,R130,R210LC-7,R215,R220LC-5,R225,R290,R300,R305,R360LC,R362,R375,R330LC,R450LC-6

For Hitachi excavator hydraulic main pump parts: EX25,EX30UR-2,EX35,EX40,EX45UU,EX50,EX60,EX75,EX90,EX100,EX55,EX120,EX160-1,EX200-2,EX210-5,EX220-6,EX270 UH07-7O/N,UH55,EX330,EX320-3 EX360,EX400,ZAXIS55,ZAXIS60,ZAXIS90, ZAXIS70,ZAXIS100-1,ZAXIS110-2,ZXXIS120,ZAXIS160,ZAXIS200-1, ZAXIS210 ZAXIS230 ZAXIS230-5 ZAXIS240 ZAXIS330 ZAXIS360 ZAXIS450

FOR SUMITOMO excavator main pump, sumitomo hydraulic pump parts: SH55,SH60,SH75,SH90,SH100,SH120-1/2/3/5,SH160,SH180,SH200-1/A3 SH220SH300-2 LS2650FJ-2 LS2800CJ/DJ/EJ/FJ-2 LS2800FJ2 LS2800F2 LS3400EA LS3400FJ LS5800FJ

Rexroth Hydraulic Pump parts models: A10VO,A11VO,A4VO,A4VG,A2FM,A2FO,A8VO,A7VO,A6VM...

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