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8.2 Make sure the power supply is safe and reliable, and must be powered off before opening the 
cover.                           

8.3 When the vibration is large, it is not suitable to use the float level controller. 

8.4 Medium with viscosity  ≥500mPa/s is not suitable for use with float level controller. 

8.5 Medium with ferromagnetic particles is not suitable for use with float level controller. 

8.6 After wiring, tighten the power supply cover to prevent the instrument from getting wet. 

9 Fault Analysis and Elimination 

Fault Phenomenon 

Cause of Issue 

Troubleshooting Method 

The level to the specified 
position switch does not 
work. 

1. The ball is too heavy to float. 
2. Float ball, leak, and medium. 
3. The installation location is wrong. 
4. The lead pipe is too long, the float is 

stuck in the lead pipe and does not 
reach into the tank. 

5. Ferromagnetic particles or obstacles in 

the medium cause the float ball to 
block. 

6. Magnetic switch assembly failure. 

1. Confirm the density or replace the float. 
2. Replace the float. 
3. Confirm the installation position according to the 

instructions to ensure that the head is flushed. 

4. Confirm that the order neck is larger than the 

length of the guide tube. If the neck is small, 
contact the factory to replace the relevant parts. 

5. Remove the instrument to clean the float ball and 

magnetic rod. 

6. Replace the switch assembly.   
 

10.Disassembly 

10.1 Warning 

Attention should be paid to hazardous process conditions, such as pressure inside the vessel, high 

temperatures, corrosive or toxic medium, etc. 

 

Refer  to  the  instructions  in  section  6.3  Installation  Operation  and  Section  7.2  Electrical  Wiring  to 

remove the parts in the reverse order of operation. 

10.2 Waste Removal 

Waste disposal should be carried out in accordance with the current guidelines in each region. 

11 Product Certification 

 

 

Summary of Contents for UQK-400

Page 1: ...1 10 WWW DDTOP COM UQK 400 FLOAT LEVEL SWITCH Operation Manual UQK 400 DT JS 1019 2018 A ...

Page 2: ...ut prior notice Quality Assurance Dandong Top Electronics Instrument Group Co Ltd guarantees that all glass plate level gauge have no defects in materials and manufacturing processes within one year from the date of delivery During the warranty period if the product returns with quality problems and the claim is determined by the manufacturer to be within the scope of warranty Dandong Top Electron...

Page 3: ...ing 5 2 5 Warehousing 5 3 Technical Characteristics 5 3 1 Main Performance 5 3 2 Main Parameters 5 4 Dimensional Schematic Figure 2 6 5 Unpacking and Inspection 6 5 1 Unpacking Inspection Notice 6 5 2 Check Content 6 6 Installation 7 6 1 Installation Tool 7 6 2 Installation Technical Requirements 7 c6 3 Installation Process 7 7 Debugging 7 7 1 Preparation for Commissioning 7 7 2 Electrical Wiring ...

Page 4: ... in Intrinsically safe or non flammable site operating procedures 1 2 Process Leaks Can Cause Serious Injury or Death Care should be taken to lift the transmitter If the process seal is damaged the medium may leak at the joint 1 3 Failure to Follow Safe Installation Guidelines May Result In Death or Serious Injury The operations described in this manual are performed by professionally trained and ...

Page 5: ...e action of buoyancy so that the magnetic rod at the end of the connecting rod moves downward in the opposite direction the magnetic rod is separated from the magnetic field of the magnetic switch assembly and the magnetic control switch returns to the original state or under the action of self weight the biased magnetic steel returns to a new equilibrium position so that the switch contacts are t...

Page 6: ...ctual size will prevail Figure 2 5 Unpacking and Inspection 5 1 Unpacking Inspection Notice 5 1 1 Check whether the product nameplate Figure 4 is consistent with the supply list information Figure4 Sample Nameplate 5 1 2 对照装箱清单 检查各零件数量 材质是否正确 5 1 2 Check the quantity of each part against the packing list and the material is correct 5 2 Check Content ...

Page 7: ...ng performance 6 2 4 The liquid surface fluctuation frequency of the measured medium shall not be too large and the fluctuation range shall not exceed the allowable action limit 6 3 Installation Process 6 3 1 Place the gasket on the sealing surface of the container flange 6 3 2 Carefully pick up the controller and load the float into the container 6 3 3 Align the controller flange with the contain...

Page 8: ...end and the low report is connected to the two pairs Opening point public end Figure 4 Electrical Wiring The normally open and normally closed points in the wiring diagram refer to the original state of the micro switch or reed switch 3 All terminals should be in good contact the output nut should be properly pressed to prevent the lead from loosening 4 Ensure that excess wires do not interfere wi...

Page 9: ...each into the tank 5 Ferromagnetic particles or obstacles in the medium cause the float ball to block 6 Magnetic switch assembly failure 1 Confirm the density or replace the float 2 Replace the float 3 Confirm the installation position according to the instructions to ensure that the head is flushed 4 Confirm that the order neck is larger than the length of the guide tube If the neck is small cont...

Page 10: ...10 10 WWW DDTOP COM ...

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