Dolphin Range B125

Inspect mechanical seal faces for wear marks, scoring, or discoloration; verify seal lubrication system delivers fluid barrier protection; measure seal leakage (normal: a few drops per minute; excessive: >5-10 drops/min indicates failure)

Monitor bearing housing temperature using non-contact infrared thermometer; check bearing lubrication level (grease or oil at sight glass midpoint); inspect for grease purging or oil seepage; perform vibration analysis to detect bearing degradation signatures early

Verify suction and discharge pressure readings match design specifications; analyze pressure differential against pump performance curves; monitor for cavitation noise; measure pump vibration (radial and axial) with transmitters to detect imbalance or misalignment

Verify lube oil level in oil-lubricated units (DL, CKL series) at sight glass midpoint; test oil quality (clarity, viscosity, contamination); confirm oil cooling system effective operation; inspect for water ingress, foaming, or degradation signs

For air-cooled heat exchangers, inspect fins for blockage by debris, dust, or oil aerosol (>30% blockage reduces cooling >30%); test differential temperature across cooler, jackets, and exchangers; hand-feel cooler outlet temperature