Welling PSB-12(DC) AC Drain Pump Complete Set with Float Switch (DC12V 0.23A)

Automating the drainage of water that accumulates from condensation in the indoor unit of your air conditioner, the Welling PSB-12(DC) Drain Pump with Float Switch offers mechanical and electrical protection together with its integrated level detection system. Manufactured with genuine Welling motor quality, this complete set completely eliminates the risk of overflow thanks to the float mechanism that monitors the water level continuously, and provides safe operation.

Smart Level Control with Integrated Float System

The most important feature that distinguishes this special set from standard pumps is the magnetic float (level sensor) system integrated into the body. When the water in the condensate pan rises, the float moves upward and automatically switches the pump on; when the water has been drained and drops to a safe level, it stops the motor. This smart control mechanism both prevents the pump from wearing out by running dry and prevents water from dripping into the living space where the air conditioner is installed.

Key Technical Specifications and Equipment

The technical details of this product, used reliably in cassette type, ceiling type or wall type inverter air conditioners, are as follows:

• Manufacturer / Model: Welling / PSB-12(DC) Set with Float Switch
• Operating Voltage: DC 12V (Safe low-voltage supply)
• Current and Speed: 0.23A current consumption and high drain speed of 1700 r/min.
• Level Control: Built-in black cylindrical float and signal cable connection.
• Insulation Class: Class E (Design resistant to continuous start-stop cycles).
• Cable and Wiring: Ready-made dual-socket cable combination for both the motor supply and the float safety circuit.

Technical Application Note for Professional Installers

Technician Note: When installing this unit, make sure the float shaft stays exactly vertical; crooked installation can cause the float to stick. After connecting the pump's supply socket to the main board, also integrate the blue/black safety socket from the float correctly into the overflow protection line of the unit. During testing, always pour some clean water into the pan by hand and observe that the float triggers the pump in time and cuts the power when the water is gone.