L921 Robust Pump Control System with Sensor Free Dry Run Protection

• Customization: Available
• Task: Program
• Structure: Closed-Loop
• Model NO.: L921
• Signal: Continuous
• Function: Automatic Control
• Certification: ISO: 9001, CE
• Condition: New
• Customized: Customized
• Material: ABS
• Transport Package: Paper Carton
• Specification: 6 pcs/carton
• Trademark: Neutral
• Origin: China
• HS Code: 9032899090
• Production Capacity: 100000PCS/Year
• Package Size: 43.50cm * 33.00cm * 20.00cm
• Package Gross Weight: 5.500kg

Product Description

Product Description

NO.1 About Product

Description
Introducing the High-Quality Electric Single Pump Control Panel (L921) tailored for water pump distributors.
The L921 Pump Controller is a smart, sophisticated, single-phase, fully-automatic pump manager with integrated water level control.

This versatile device excels in water and wastewater applications, effortlessly handling tasks like water transfer, tank filling, and emptying. Plus, it's perfect for pressure boosting in hydro-pneumatic systems. Encased in a robust ABS housing, it ensures weather-proof installation and supports both Auto and Manual operations.

Parameter form

General details
Model	L921
Main technical data
Start type	Direct on line
Qty of controlled pump	Single pump
Rated input voltage	AC220V-240V Single phase 50HZ/ 60HZ
Rated output power	0. 37kw-2.2kw (0.5hp-3hp) 3kw-4kw (4hp-5.5hp)
Capacitor	Reserved space for installing stsrt capacitor
Protection function	Over load protection Pump stalled protection Dry run protection with sensor free Under voltage protection Over voltage protection Repeat start protection
Application & Control characteristic	Control and protect general pump Using water level sensor , float switch or pressure switch or level/pressure transmitter to control pump start and stop Applied for water supply by liquid level control through float switch or liquid probe Applied for water supply by pressure control through pressure switch and pressure tank Applied for drainage by liquid level control through float switch or liquid probe
Other features	Pump last five faults record displaying Pump accumulative running time displaying Pump shaft anti-rust Present one dry contact point(BA port) LCD screen locked function under anto state Present RS485 port Present user remote monitor Push button calibration
Main installation data
Working temperature Working humidity Degree of protection Install position Unit dimension (L x W x H)	-25ºC-- +55ºC 20%--90%RH, no drips concreted IP54 Wall mounting 310×220×120mm

Typical Application Example


Typical usage scenarios include
- Residential Houses
- Apartments and Flats
- Vacation Homes
- Agricultural Farms
- Well Water Supply Systems
- Greenhouse, Garden, and Agricultural Irrigation
- Rainwater Harvesting and Reuse
- Industrial Facilities
- Sewage and Wastewater Management Systems

NO.2 About us

1)Company Information
Brief Introduction
Established in 2001, Leading Science & Technology has been at the forefront of delivering innovative pump control and protection solutions to diverse pump users.
Today, we proudly offer a comprehensive array of pump control panels and accessories to meet the evolving demands of the pump control and protection market.

Our extensive product lineup includes: Intelligent Pump Controllers, Sewage Pump Controllers, Booster Pump Controllers, Deep Well Pump Control Boxes, Submersible Pump Controllers, Pump Motor Starters, Programmable Logic Controllers, IOT Pump Controllers, and Reverse Osmosis Controllers.

For more information, please visit: pumpcontroller.en.made-in-china.com

Our office & Team

Leading Company is powered by three dedicated departments:
1. Sales Team - The bridge to our customers, gathering crucial insights and technical needs from pump manufacturers, distributors, and users, then conveying them to our R&D team.
2. R&D Team - Innovators who evaluate, research, develop, and rigorously test pump controllers based on gathered insights.
3. Production Team - Experts who bring our R&D innovations to life by manufacturing functional and reliable pump controllers.
Through the seamless collaboration of our team members, Leading Company has pioneered many groundbreaking control and protection technologies in the pump industry.

Thanks to this synergy, we consistently develop cutting-edge solutions tailored to the unique needs of the pump industry.

2)Our trading fair&Communication&Feedback

NO.3 Our production capacity

We cordially invite you to experience our capabilities firsthand with a factory field trip.

N0.4 FAQ
Can I request samples?
Absolutely, we are pleased to offer samples for testing purposes. Please contact us for further details.
What is the delivery time?
Standard pump control panels typically ship within 7 working days.
For non-standard options, the lead time is generally 15-20 days. Please get in touch for more specific information.
Is OEM or ODM service available?
Yes, our expert engineering team is able to support OEM and ODM projects, subject to minimum order quantities.
How does your factory ensure quality control?
Our production process meticulously adheres to ISO standards, ensuring impeccable quality control from the selection of raw materials through to the final product. Each control panel is comprehensively assembled and undergoes rigorous testing prior to being carefully packaged and shipped.
Could you kindly inform us about the expected lifespan of your control panel?
Our control panel is expertly designed with a robust lifespan of 8 years.
Could you elaborate on your after-sales service policy?
In accordance with your order quantity, we provide complimentary spare parts or controllers for maintenance or replacement. Additionally, we offer comprehensive technical training to ensure seamless operation.
What assurances do you offer that inspire trust?
With 15 years of dedicated experience in pump control panel manufacturing and sales, we have earned the trust of numerous pump suppliers in China and internationally, who rely on our controllers for the safeguarding and management of their pumps and motors.
Where is your location and transportation guide?
Traveling from Guangzhou to Changsha is a breeze! It takes just 1 hour by air or 2.5 hours via high-speed train.
From the vibrant city of Shanghai, you can reach Changsha in a mere 1.5 hours by air or enjoy a 5-hour journey on the high-speed train.
A direct flight from Beijing to Changsha takes only 2.5 hours, making it a convenient option.
Experience the journey from Hong Kong to Changsha in just 2 hours by air.

We invite you to send your inquiries or messages to this reliable supplier to get started.