Sandpiper Diaphragm Pump S30B1S1AAAS000.

Shut off the compressed air line

Disconnect the air line from the pump

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

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)

Shut off the compressed air line

Disconnect the air line from the pump

Flush the pump after each use if used for materials that tend to settle out or solidify

Inspect all fasteners for loosening caused by gasket creep

Retighten loose fasteners to recommended torque values

Inspect all suction-side gaskets and pipe connections for air leakage

Check all suction screens or strainers for obstructions

Clear any obstructions from suction screens or strainers

Inspect the air exhaust muffler for blockage, icing, or presence of pumped fluid

Inspect diaphragm plates for issues

Inspect intermediate bearings for issues

Inspect diaphragm rod for issues

Clean or repair diaphragms if appropriate