Pentair · IntelliFlo
VSF
Variable speed + flow pool pump · 3.95 THP · ENERGY STAR · Lafert motor manufactured Feb 2022 · in service at New Hope
Pump running, 26 May 2026 — listen for the operating note. The MP4 is the H.264 web sibling of the iPhone HEVC MOV original (which is also available).
Model
Pentair IntelliFlo VS-F (Variable Speed and Flow) · 3.95 THP-class · ENERGY STAR · the high-end IntelliFlo line above the VS (speed-only) variant — the "+F" adds flow-control logic that holds GPM as filter pressure rises
Motor — Lafert OEM
Lafert HPS90D1A-56664 · P# 350305 · serial N° 1874380-00694 · manufactured Feb 2022 · 3.95 THP at 91.0% efficiency · made by Lafert S.p.A. of San Donà di Piave (VE), Italy — Pentair's longtime OEM partner for VSF drives
Hydraulic / thermal ratings
HHP 1.88 · THP 3.95 · WEF 6.9 · RPM 450–3450 (8 programmable speeds + override) · Frame 56 · Insulation class F · Enclosure DE3R IPX5 · ambient temp up to 50°C
Electrical
230 VAC · 16 A · single-phase · 50/60 Hz · stored-charge caution applies — wait 1 minute after disconnect before servicing the drive
Serial / drive D/N
D/N 176L8122 · 357526D01722SK0158745U · E337256 — captured from the drive caution sticker; the strings Pentair support will ask for first
Position in the loop
Upstream of FNS Plus DE filter → Hayward HeatPro → returns · programmed speeds set filter GPM and stay inside the heat pump's 30–75 GPM window
Location
pa · 6279 Greenhill Road, New Hope PA 18938 · pool equipment pad, adjacent to the heat pump and DE filter
Expected operational life
Pentair IntelliFlo VS-F typical service life 10–15 years; the Lafert motor is the wear-limiting component (capacitors, bearings). The Feb 2022 build date suggests a recent install — plan replacement window 2032–2037 baseline, sooner if drive faults appear.
Year installed / purchased
TBD — likely matches the Feb 2022 motor build date if pool equipment pad was refreshed as a single project · recover from invoice / installer paperwork
Current status
Photographed, videoed running, and inventoried 26 May 2026 during the pool-equipment audit walk. Operating note in the clip is clean — no cavitation, no motor rattle. Next steward actions: (1) capture programmed schedule from the IntelliFlo controller (low-speed filter runs + high-speed cleaning bursts), (2) recover purchase / install paperwork to lock down warranty window, (3) note current drive fault history if any.
Manufacturer resources
- Product page Pentair IntelliFlo VSF — product page
- Manuals Owner's + install manuals at Pentair downloads · setpoints, fault codes, drive programming
- Parts Inyo Pools · IntelliFlo VSF parts + exploded diagrams
- Pentair support Pentair customer support · have D/N + drive serial ready
- Community TroubleFreePool — IntelliFlo VSF threads
Service log
No entries yet. First entry should capture: programmed-schedule snapshot (speeds + run hours per day), current drive fault history, baseline psi reading on the upstream gauge, and confirmation that the strainer basket is clear. From there, log every cap-removal / impeller inspection / seal replacement.
Cross-references
- Pool category index — the parent page lists every pool-system record in one place
- Pentair FNS Plus DE filter — immediately downstream; back-pressure on the filter directly changes the speed-vs-flow curve this pump runs against
- Hayward HeatPro HP21404T heat pump — end-of-loop heat exchanger; the IntelliFlo's flow program has to land inside HeatPro's 30–75 GPM window during heat-call hours
- Hayward chlorine feeder — inline chemical feed; closure depends on the pump being on, so any unplanned pump-off interrupts chlorination too
- A&B Full Pool Service — current go-to for pool service; first call for drive faults, strainer reseals, impeller work