FAQ

FAQ

air operated diaphragm pump inatallation instructions

  • Connect the suction and discharge ports of the pump with a hose or flexible pipe to avoid damage caused by vibration of the pump.

  • Never step on the diaphragm pump or use other methods to apply weight to the pump body, or suspend the pump. Otherwise, there is a danger of personal injury or equipment failure.

  • The suction head of the inlet should be less than six meters (For water).

  • The direction of the pipe (inlet and outlet) can be turned, but please pay attention to the O-ring when disassembling and installing it and locking the pipe well to prevent leakage.

  • We suggest that you can install the air filter, regulator, and lubricator (FRL) on the air inlet of the pump.

  • When installing the pump, please consider absorb vibration and install it in an appropriate manner.

    (1) Installation location—Horizontal installation to avoid installation in a slanted position.

    (2) Installation orientation—When install the pump, please keep the fixing feet below.

    (3) Installation method—When fixing the stand, please install a rubber gasket between to reduce the vibration and avoid the pump body, piping or connected machine to be damaged due to vibration.

  • The choice of piping should consider the appropriate pipe diameter, chemical resistance and pressure resistance, to avoid the possibility of liquid leakage and damage caused by wrong selection.

  • When transportation, recommend to set the suction filter (the aperture can refer to the allowable particle size limit) and check the pipeline before use. Be sure that there must be no foreign objects entering the pipe, otherwise the pump will malfunction.

  • Please consider the strength of the pipe. Avoid damage the pipe due to the pressure generated by the pump's conveying work.

  • Please choose the caliber suitable of inlet tube, or larger caliber will cause the suction insufficient when you use the pump.

  • Please check the installation to ensure it is correct before starting the pump. Operating the pump with loose screws can cause personal injury and damage to the surrounding equipment.

  • If the fluid is a flammable chemical, we recommend connecting a ground wire to prevent fire or explosion, which could result in harm to people or damage to property.

  • The pump should be placed on a stable surface or firmly fixed on a work platform to prevent accidents caused by vibration.

  • The piping at both the suction end and the outlet end needs to be fixed separately. The connection between the pump and the piping should be securely locked to prevent any looseness.

  • When starting the operation, gradually increase the supplied air pressure from the minimum starting pressure. After confirming there are no abnormalities in the pump’s operation, increase the pressure to the required operating value.

  • It is recommended not to run the pump idle or input excessive air pressure for a long time, as this can shorten the service life of the components. Adjust the appropriate air pressure input to below 5 Kg/cm² (Bar) to avoid excessive wear caused by friction between parts.

  • It is recommended to set and fix the required air pressure input value during operation. After confirming normal operation, adjust the outlet switch valve to set the flow rate to the desired value.

  • When the pump is running and full of fluid, closing the outlet switch will stop the pump. While this is not dangerous, it is advised not to maintain this state for an extended period or leave it unattended to prevent unnecessary loss or danger due to fluid leakage. To stop the pump, you should close the air supply, open the outlet switch, and release the remaining pressure inside the pump and piping.

  • If you need to transfer fluid that precipitates or solidifies easily, you should run a solvent through the pump to wash it after stopping operation. This will prevent the pump from being unable to function properly or from parts deforming and getting damaged due to sedimentation or agglomeration at the next startup.

  • Before performing maintenance or inspection, please thoroughly read the product operation manual.

  • Do not carry out maintenance, inspection, or disassembly while the pump is in operation to avoid accidents caused by leakage or splashing.

  • Before maintenance, shut off the air pressure supply and completely release the pressure inside the pump and its pipelines before proceeding with inspection or disassembly.

  • Use only original spare parts for replacement to prevent reduced pump performance, operational issues, or damage to other components caused by non-original parts.

  • When tightening screws, refer to the specified torque range for different specifications. Failure to tighten adequately or over-tightening may result in leakage, cracking, or other issues, potentially leading to accidents during pump operation.

  • Damages, accidents, or malfunctions resulting from any of the above situations are not covered under the company's warranty policy.

Under Warranty

  • This product is covered by an 18-month manufacturer’s warranty from the date of shipment.

  • In the event of a product failure due to non-human factors within 7 days of purchase, and upon confirmation by our company, a one-time replacement with a brand-new unit will be provided free of charge.

  • During the warranty period, if the returned product is diagnosed with quality issues or manufacturing defects that cannot be repaired, it will be replaced with the same model or an equivalent model of comparable grade.

  • During the warranty period, if a returned product is diagnosed with defective original parts, the defective parts will be replaced free of charge.

  • During the warranty period, if consumable parts are replaced by the manufacturer, only the standard consumable charge will apply, and no labor fee will be incurred. (The product serial number and nameplate must remain intact and identifiable, and must be verified and approved by the original manufacturer.)

  • The warranty service does not cover the risks associated with transportation. The sender shall bear the risk and responsibility for any damage or loss occurring during shipment.

Exclusions from Warranty

  • The product is beyond the original manufacturer’s warranty period.

  • Damage caused by improper use or handling, such as dropping, impact, liquid ingress, overload, etc.

  • Failures or damage resulting from force majeure events (e.g., floods, fires, earthquakes, lightning strikes, typhoons, etc.).

  • Damage or wear caused by improper usage, unauthorized modifications, or failure to operate the pump in accordance with the manufacturer’s guidelines.

  • Damage or malfunction caused by the transfer of unsuitable fluids.

  • Failures or performance issues caused by failure to follow the manufacturer's recommendations for installation, vibration protection, maintenance, and servicing.

  • Damage or malfunction caused by incorrect external equipment connections or improper operations.

  • Damage caused by disassembly, modification, repair, or replacement of parts by unauthorized third parties or the user.

  • Use of non-original parts that lead to pump damage or malfunction.

  • Product serial number is altered, damaged, illegible, or does not match the purchase records.

  • Wear and tear due to normal interaction between the fluid media and mechanical components (e.g., diaphragms, balls, and other consumable parts) are not covered under warranty.

  • Normal wear and tear of the pump’s air system components resulting from operation is not covered under the warranty. (The wear rate may vary depending on operating pressure, usage frequency, and ambient air quality conditions.)

  • Failures or damages caused by environmental factors where the pump is installed. (For example: excessive humidity, temperature conditions, or severe moisture accumulation in the air supply line.)

※Final warranty decisions rest with the manufacturer based on inspection results.

1. Air inlet unusual: Check the air regulator whether works or not. If it can’t work, change the abnormal parts.

2. Pipeline clogging: Check the fluid pipe whether blocks or not. If it blocks, removing the obstruction. (Make sure the pipe is relieved air pressure to prevent casualty.)

3. Damaged parts: If the parts of the Air Driven Double Diaphragm Pump have damaged, please contact a professional person.

1. Loose joints: Check the input pipeline whether close tightly.

2. Diaphragm problem: The diaphragm loose or ruptured might lead air escape to the pipeline, please contact a professional person.

1. Condensation Water: If it leaks oil-water mixture from the silencer, not the liquid which transports. It should enhance the air pressure pipeline and install the modular type F.R.L unit.

2. Diaphragm problem: If it is the liquid being transported, the diaphragm may be loose or ruptured. Please contact a professional person.

1. Ball valve abnormal: If the ball valve has severe wear parts or include foreign objects, it might cause a ball valve abnormal. Please change the parts or remove the foreign object.

2. O-ring abnormal: If the O-ring wear and tear, it might lead to air pressure unbalanced. You can purchase spare seal kits by yourself to exchange the broken O-ring.

1. Pipeline stuck: Make sure whether the inlet/outlet pipelines are blocked or not. It might cause the inner pipeline to get smaller. We recommend you clean up or change the pipeline.

2. Abnormal lubrication: Ensure the air chamber of the Pneumatic Duplex Diaphragm Pump whether lubricates sufficiently or not. Please clean up the dirty parts. (It is recommended to add lubricating oil to the air pressure inlet pipeline every half year, don’t exceed 10ml each time.)

3. Sequential valve abnormal: If the deterioration of the sequential, if it is worn, please change it.

4. Compressed Air Lines Freezing: The Slithery Mass Valve #53 might be frozen because of low temperature and condensation. If it happens, it is recommended to add antifreeze in the pipeline and enhance the air drying to improve the situation.

5. Clogged Silencer: If the air quality in the environment is horrendous, it may cause the air pressure source to mix dust. When it happens, it will block the silencer hole, which will cause unsatisfactory exhaust after a while. It is suggested that replace the new or a larger aperture silencer.

1. The Slithery Mass Valve #53 and Include Ply #54 are worn: If the Slithery Mass Valve #53 and Include Ply #54 are worn. It will have occurred air leakage which will cause the Air Operated Double Membrane Pump to operate abnormally. If it happens, please replace the part.

2. O-ring is worn: If the O-ring inside the Body of the Sequential to Air Valve is worn. It will have occurred air leakage which will cause the Air Driven Double Membrane Pump to operate abnormally. Please replace the O-ring.

1. Air pressure is overload: Air Operated Duplex Membrane Pump operating pressure cannot more than 8.0 bar (kg/cm²). If it exceeds, it will cause the liquid leakage or damage of the Air Driven Duplex Membrane Pump, it should adjust the air pressure range.

2. The joint is loosely sealed: Except incomplete locking, if the O-ring or Pad of the Pneumatic Duplex Membrane Pump joint has deformation or wear, it will be loosely sealed and then leakage. Please replace the parts of the pump.