What to inspect on old pumps?
Check for erosion wear on chambers, diaphragm plates, seats and sealing surfaces. Sharp or jagged edges indicate a need for replacement.
What are the most common problems with pneumatic diaphragm pumps?
Exhaust leak (ruptured diaphragm), stalling due to contaminated air and starting failures. All avoidable with preventive maintenance and treated compressed air.
How to solve these problems?
Replace damaged diaphragms, check balls and seats. Having repair kits in stock reduces downtime.
I use abrasive clay and the diaphragms don't last long. Any tips?
Check material compatibility. Use reinforced diaphragms and, if necessary, pumps with a lower ball valve. Reducing speed also helps preserve components.
How to avoid dangerous leaks in case of diaphragm failure?
Direct the exhaust to a safe area or use pumps with a containment chamber for critical environments.
My pump blows air but doesn't pump. What to do?
It could be contamination in the air line or wear in the valve system. Use filter/regulator and check the distribution valve.
Fluid is coming out of the exhaust. Is it normal?
No. This indicates rupture of the diaphragm. Replace immediately.
The diaphragm failed before 10 million cycles. And now?
Assess chemical compatibility, temperature, mounting torque, and system conditions. Restriction in suction or wear on the air side may be causing the failure.
The pump is slow, stalling or has low flow. Solution?
Check whether the compressor supplies sufficient air in pressure and volume. Avoid sharing the same air line between several pumps.
My pump isn't working. What could it be?
Possible causes: water or oil in the air line, frozen muffler, excessive lubrication, ruptured diaphragm or clogged pilot valve.
