Grundfos SL1.80.80.22.4.50B Pump
Spare Parts for SL1.80.80.22.4.50B Wastewater Pump
Product Summary
The Grundfos SL1.80.80.22.4.50B is a robust 2.2 kW (4-pole) submersible wastewater pump designed for the transfer of domestic and industrial sewage. It features the innovative S-tube® impeller, which provides free passage for solids up to 80mm, ensuring reliable operation without clogging. This pump is engineered for submerged installation on auto-coupling systems or free-standing on a ring stand.
- S-tube® Impeller: Offers great hydraulic efficiency and large free passage (80mm) to handle solids and fibers effectively.
- Cartridge Shaft Seal: A double mechanical cartridge shaft seal simplifies replacement and ensures a reliable barrier between the pumped liquid and the motor.
- Watertight Cable Entry: The cable entry is filled with polyurethane potting compound to prevent liquid ingress into the motor, even if the cable is damaged.
- Clamp Connection: A stainless steel clamp secures the pump housing to the motor unit, allowing for easy and tool-free disassembly for inspection.
- Moisture Protection: Integrated moisture switches monitor the motor and oil chamber (optional depending on config) to alert against leakage.
Spare Parts List
| Select | Qty | Part Number | Description | Material / Spec |
|---|---|---|---|---|
| 1 | 96102360 | Shaft Seal Cartridge (Primary/Secondary) | SiC/SiC - Carbon/Ceramic | |
| 1 | 96102361 | O-Ring Service Kit (All Seals) | NBR | |
| 1 | 98679093 | Cable Plug (Motor Side) | Polyurethane/Rubber | |
| 1 | 96813735 | Lifting Bracket & Hardware | Stainless Steel | |
| 1 | 96076121 | Oil (1 Litre) | Paraffinic Oil | |
| 1 | Pos. 49 | S-tube Impeller (80mm Free Passage) | Cast Iron (EN-GJL-250) | |
| 1 | Pos. 50 | Pump Housing (DN 80) | Cast Iron (EN-GJL-250) | |
| 1 | Pos. 92 | Clamp (Motor/Pump Connection) | Stainless Steel | |
| 1 | Pos. 105 | Shaft Seal (Cartridge) | Composite/Metal | |
| 1 | Pos. 181 | Cable Plug (Outer) | Polyurethane |
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Curve | SL1.80.80.22.4.50B |
| Rated Power | 2.2 kW (3.0 HP) |
| Voltage / Frequency | 3 x 400-415 V / 50 Hz |
| Rated Current | See Motor Nameplate |
| Discharge Connection | DN 80 (Flange) |
| Impeller Type | S-tube® (80mm Free Passage) |
| Installation Type | Submersible (Auto-Coupling) |
Troubleshooting, Common Faults & Solutions
Pump does not start / Motor trips
Likely Cause: Power supply failure, jammed impeller, or cable fault.
Action / Part: Check fuses/cable and inspect Impeller (Pos. 49) for clogging.
Pump runs but flow is low
Likely Cause: Wrong direction of rotation or clogged piping.
Action / Part: Swap two phases (3-phase) or clean discharge line.
Moisture switch alarm
Likely Cause: Water ingress into motor or oil chamber.
Action / Part: Replace Shaft Seal (Kit 96102360) and O-rings (Kit 96102361).
Vibration or noise
Likely Cause: Worn bearings or debris in impeller.
Action / Part: Clean pump or replace Bearings (requires service).
Pump runs constantly
Likely Cause: Stop level switch failed or pump capacity too low.
Action / Part: Check level switches/float or inspect for impeller wear.
Online Resources
Request for Quotation
Thank you!
Your Request for Quote has been successfully sent.
Our team is reviewing your requirements and will be in touch shortly.
Selected Parts:
- No parts selected