The Aquatec 21-028 Low Pressure Protection Wire connects your low pressure switch to the pump control system, ensuring automatic shutoff when inlet pressure drops below safe operating levels. This OEM-grade replacement wire is engineered specifically for use with the Aquatec LPS340-G low pressure switch to prevent pump damage from dry running or inadequate feed water pressure.
SPECIFICATIONS
Technical Details
| Manufacturer | Aquatec |
| Model Number | 21-028 |
| Product Type | Low Pressure Protection Wire |
| Compatible Switch | Aquatec LPS340-G Low Pressure Switch |
| Function | Pump control signal transmission |
| Application | RO booster pump systems |
| Wire Type | OEM replacement component |
INSTALLATION & USE
Connection Procedure
- Disconnect power to the RO booster pump system before beginning any wiring work to prevent electrical shock.
- Locate the wire terminals on the Aquatec LPS340-G low pressure switch and identify the corresponding connection points on your pump control board.
- Connect the Aquatec 21-028 wire between the low pressure switch and pump controller, ensuring firm contact at all terminal points.
- Restore power to the system and verify the low pressure switch engages properly when inlet pressure falls below the threshold setting.
COMPATIBILITY
System Requirements
The Aquatec 21-028 low pressure protection wire is designed exclusively for use with the Aquatec LPS340-G low pressure switch. This wire provides the electrical connection between the switch and your RO booster pump control system, transmitting the shutoff signal when feed water pressure drops below safe operating thresholds. It is compatible with residential and light commercial reverse osmosis systems utilizing Aquatec booster pumps with low pressure switch protection circuitry.
🔧 Pro Tip: When replacing the 21-028 wire, inspect the terminal connections on both the LPS340-G switch and pump controller for corrosion or oxidation. Clean terminals with fine sandpaper if necessary to ensure reliable electrical contact and consistent low pressure protection performance.
