Pentair IntelliFlo VS
PumpModel: 011028
Variable-speed pump, 3.95 THP, 230V — discontinued. Pentair names the IntelliFlo3 VSF as its replacement. Rotatable keypad with 8 speeds; RS-485 to Pentair automation. A permanent-magnet synchronous motor run by a drive: no start capacitor.
Specifications
| hp | 3.95 THP |
| voltage | 230V |
Common Replacement Parts
| Part Number | Name | Category | Notes | Shop |
|---|---|---|---|---|
| 071734S | Shaft Seal | seal | Ozone/salt-resistant version: 071732S. | Search in Shop |
| 350202 | Seal Plate Kit with seal (almond) | seal | 350203 is the black version. | Search in Shop |
| 356878Z | Drive | drive | Pentair's current drive for the IntelliFlo VS (kit 356879Z). | Search in Shop |
| 357527Z | Keypad | keypad | Relocation kit 356904Z (almond) / 356905Z (black). | Search in Shop |
Troubleshooting
Pump loses prime or has air in the basket
Possible Causes
- Worn or dry lid o-ring
- Air leak on the suction side (unions, drain plugs, valves)
- Low water level
How to Fix
Check the lid o-ring and seat it clean, tighten suction unions and drain plugs, and bring the water to mid-skimmer.
Water leaking between the motor and the pump
Possible Causes
- Worn mechanical shaft seal
How to Fix
Replace the shaft seal (071734S) before the leak rusts the motor bearings.
Alarm on the keypad
Possible Causes
- Priming Failure
- Overheat
- Over Current
- Over Voltage
- Power Out (supply under 170 VAC)
How to Fix
A priming failure retries after 10 minutes and becomes a hard stop after five tries — fix the air leak, then reset. The pump will not start while the impeller is already turning.
Schematic & Parts
Schematic Coming Soon
We're working on adding an exploded parts diagram for this model.
Need this part?
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