Sandpiper Diaphragm Pump S30B1ABAAAS000.

Inspect check valves and seats for wear and proper setting

Replace check valves or seats if necessary

Disassemble the wet end of the pump

Manually dislodge any obstruction in the check valve pocket

Clean out around the valve ball cage and valve seat area

Replace valve ball or valve seat if damaged

Pre-maintenance Safety Measures

Shut off the compressed air line

Disconnect the air line from the pump

Pilot Valve Disassembly and Inspection

Inspect O-Rings (4-C) and replace if required

Remove spool (4-D) from sleeve (4-B)

Is an air line lubricator installed?

Set lubricator to deliver one drop of SAE 10 non-detergent oil for every 20 SCFM (9.4 liters/sec.) of air consumed

Consult the Performance Curve to determine air consumption and note it here

Is the lubricator set on the lowest possible setting?

Is the pump cycling sluggishly or stalling?

Shut off the compressed air line

Disconnect the air line from the pump

Was the pump flushed after use for materials that tend to settle out or solidify?

Shut off the compressed air line

Disconnect the air line from the pump

Remove diaphragm assemblies from diaphragm rod

Remove manifolds and outer chambers

Remove diaphragm assemblies from diaphragm rod

Avoid using a pipe wrench or similar tool to remove assembly from rod

Use soft jaws in a vise to prevent diaphragm rod damage