L921-B 4kw Automatic Booster Water Pump Control with Dry Run Protection

• Customization: Available
• Task: Adjust
• Structure: Closed-Loop
• Model NO.: L921-B
• Mathematical Model: Non-Linear
• Signal: Continuous
• Function: Automatic Control
• Certification: CE
• Condition: New
• Customized: Customized
• Material: ABS
• Transport Package: Paper Cartoon
• Specification: 6 pcs/carton
• Trademark: Neutral
• Origin: China
• HS Code: 9032899090
• Production Capacity: 100000PCS/Year
• Package Size: 43.50cm * 33.00cm * 18.00cm
• Package Gross Weight: 4.500kg

Product Description

Product Description

 

 

1  About Product
1)Description

Intelligent pump control appliance for booster pump L921-B
Model L921-B is specially designed for pressure booster pumping system by adopting pressure transmitter, pump user can easily set the different pressure value and observe the dynamic pressure value in the pipeline.

2)Parameter form
 

Application	Control & protect booster pump only
Model	L921-B
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) 3-4kw(4-5.5hp)
Protection function	Over load protection Pump stalled protection Dry run protection with sensor free Under voltage protection Over voltage protection Repeat start protection
Control characteristic	Connecting 0.5-4.5V pressure transmitter to replace pressure switch Pump start and stop according to different pressure value setting
Other features	LCD screen displaying dynamic real time pressure value  Pump start and stop pressure value can be easily setting on the LCD screen Pump accumulative running time recording Pump last five faults record displaying Presenting one dry contact point (BA port) Present RS485 port Present user remote monitor LCD screen locked function under Auto state 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 x 220x 120mm

   
2  About us
1)Company Information 

Brief Introduction
Since 2001, Leading Science & Technology company has been providing pump control and protection solutions to pump users.
Today Leading Science & Technology offers a wide range of pump control panel & pump control accessories for the pump control and protection market.

Our products: Intelligent Pump Controller, Sewage Pump Controller, Booster Pump Controller, Deep Well Pump Control Box, Submersible Pump Controller, Pump Motor Starter,Programmable Logic Controller, IOT Pump Controller, Reverse Osmosis Controller.



Our Team
Leading company has three major departments:
1. Sales Team
2. R&D Team
3. Production Team
Sales team collect the information and technical requirements from pump manufacturers, pump distributors, pump users etc and report to our R&D team. According to the information, R&D team will evaluate firstly and start to research,develop and test the pump controller. Finally once the pump controller is workable, our production team will produce.

With our team members' close cooperation, Leading company has been developing many unique control and protection technology for pump industry.

2)Our factory

3)Our trading fair

4)Customers' visit 



5)Qualification &Certificate



3.FAQ 
  
1)Can i have some samples ?
Yes ,we can send you samples for testing,contact us for details.

2)What's delivery time ?
For standard pump control panel ,it usually takes about 7 working days;
For non-standard,it usually takes 15-20days ,please contact us for details.

3)Can I do OEM or ODM ?
Yes,we have our own engineering team and we do accept OEM and ODM,but there is ordering quantity requirement.

4)How does your factory do the quality control ?
Our production process follow up the ISO standard and we control the product quality from the raw materials to the finished product,each of our control panel will be fully assembled and strictly tested before packing and shipping.

5)What is the approximate life time for your control panel ?
The designed life time of control panel is 8 years.

6)What is your after sales service policy ?
According to the ordering quantity,we will give some free spare parts or controller for maintenance or replacement and we will give technical training.

7)How can i trust you ?
We have being developing the pump control panel manufacturing and selling for 15 years ,now many pump supplier from China and overseas are using our controller to control and protect their pump and motor.