3.2.3 SSP3 Transfer Pump
This section details the specifications for the Transfer Pump Station serving Zone 3 of the collection network, designated as SPS3 (SSP3).
Location and Overview
- Location: Western side of the lake
Tank Specifications
| Item | Detail |
|---|---|
| Type | Concrete baffle-less septic tank (similar to Darwin Pre-Cast vertical septic tank) |
| Capacity | ~5,600 L (effective capacity reduced by ~1,200 L as pumps are suspended ~0.5 m from the bottom) |
Pump System
Primary Pumps
| Item | Detail |
|---|---|
| Quantity | Two Xylem Lowara SCUBA 3SC4/05 pumps |
| Model | 3SC4/05/5 C / 3SC4/05/5 C G L20 (UK version with float) |
| Power | 0.55 kW (≈ 0.75 HP), single-phase 230 V |
| Max Head | ~45 metres |
| Flow Rate | ~70 L/min (variant dependent) |
| Outlet | 1¼" BSP Female |
| Cable | 20 metres (in L20 variant) |
Pump Construction
| Item | Detail |
|---|---|
| Material | Stainless steel (AISI 304) body and shaft; technopolymer impellers; double mechanical seal system |
| Liquid Temp | Max 40°C |
| Installation | Vertical or horizontal, up to 17 m immersion depth |
| Notes | Versions available with or without float switch. Suitable for clean or slightly abrasive water. Internal capacitor for single-phase operation |
Documentation
Control System
Controller
| Item | Detail |
|---|---|
| Type | Matelec FPC-Series with visual and audible alarms |
| Features | Main electrical sub-board has visual alarm strobe |
Float Switches
| Item | Detail |
|---|---|
| Quantity | 2 units (pump activation and high level) |
| Model | Kelco K10M |
| Voltage | 0–240 V, 15 A resistive |
| Type | SPDT Float Switch |
| Cable | 10 m CPE rubber |
| Manufacturer | Kelco (Australia) |
| Documentation | K-Series Installation Sheet |
Wiring Note
Blue wire is common.
Flow System
Inflow
Receives primary treated effluent from septic tanks at units 65–66 (via SSP4) and units 75–76 and 79–80 (via SSP5) through a 32 mm blueline polyethylene pipeline.
Discharge
Pumps effluent under the lake to SPS1 (SSP1) on the eastern side. The original DN32 HDPE Blueline main (incorrect colour) has been upgraded to a 32 mm lilac poly pipe encased in a 100 mm PVC pipe. Pressure test of the original main was successful. From SPS1, effluent is routed to WWTP Primary Tank 1 (PT-1).
Current Status
Condition
Tank appears in good condition.
Known Issues
- Performance: Low flow rates from pumps noted with the original pipe, likely due to length/size of discharge pipework
- Flow Variation: Fluctuating inflow noted
Version Control
| Version | Date | Description |
|---|---|---|
| 1.0 | 2025-10-06 | Initial Release |
| 2.0 | 2026-06-22 | Updated Zone 3 flow path to WWTP |
Next Review Date: 2026-12-22