CR 5
Grundfos CR 5 — Freshwater cooling, vertical multistage centrifugal.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Check material certificate and surface finish; verify titanium marking on CRT type plate; confirm corrosion resistance against ASTM seawater standards
Verify seal type (mechanical vs. air-cooled); perform thermometer reading; check wear pattern on bearings and seal; review service intervals
Perform suction-side pressure measurement; compare NPSH availability with operating condition; check pressure relief valve function; verify cavitation noise/vibration at various speeds
Check VFD firmware version; validate sensor function (pressure, temperature, flow); check power supply voltage and frequency; monitor alarm/error code logging
Check shaft runout with dial indicator (max. 0.1-0.2 mm); verify bearing clearance with lubricant control; measure shaft axial displacement before/after 100 operating hours
Type-general inspection and maintenance points for this equipment category — not model-specific.
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