STW-400
Parker Village Marine STW-400 — Small to medium powerboats and sailboats, ocean cruising.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Daily/Weekly: Check system pressure gauges (feed, concentrate, permeate). Verify that feedwater flow rate and reject flow rate are within manufacturer design limits using installed flowmeters.
Before startup: Check HP pump oil level by observing sight gauge located on the pump. Perform oil change after first 50 hours and every 500-hour intervals OR annually, whichever comes first.
Daily operation: Check the salinity reading on the water quality monitor. Record TDS/conductivity readings. Normal saltwater startup produces salty water first 2-3 minutes; product water should be <500 ppm for seawater operation.
Monthly/Quarterly: Inspect prefilter pressure drop gauges. Replace or clean 5-micron sediment prefilters when pressure drop increases or flow is restricted. Monitor differential pressure (ΔP) trends and replace cartridges every 3-6 months or when ΔP exceeds manufacturer threshold.
Weekly: Inspect entire system for visible leaks in high-pressure piping, fittings, filter housings, pressure vessel O-rings, and end caps. Verify all 316 stainless steel connections are tight. Check for corrosion around titanium and bronze components.
Type-general inspection and maintenance points for this equipment category — not model-specific.
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