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Labtron LFH-A20 Manual

Ductless fumehood
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Summary of Contents for Labtron LFH-A20

  • Page 1 | info@labtron.com...

  • Page 2: Table Of Contents

    Ductless Fumehood LFH-A20 Index Sr.no Title Page no Safety Measures Introduction Features Specifications Applications Instrument Introduction Installation Operations Maintenance Troubleshooting Accessories Replacement Circuit Diagram...

  • Page 3: Safety Measures

    Ductless Fumehood LFH-A20 1. Safety Measures Label Description Fuse label Ground label Note: The 5A fuse indication label is below the socket fuse holder. 10A fuse indication label is located below the power socket.

  • Page 4: Introduction

    Ductless Fumehood LFH-A20 2. Introduction Ductless Fume Hood LFH-A20 is a floor standing unit offers 910 × 690 × 740 mm chamber dimension, 650 mm maximum opening and 2 pcs chemical filter. Equipped with UV lamp for effective sterilization of working environment. Features three side...

  • Page 5: Specifications

    Ductless Fumehood LFH-A20 4. Specifications Model No. LFH-A20 Internal dimension (W × D × H) 910 × 690 × 740 mm External dimension (W × D × H) 1000 × 880 × 2140 mm Work surface height 900 mm Maximum opening...

  • Page 6: Instrument Introduction

    Ductless Fumehood LFH-A20 6. Instrument Introduction Structural Composition of Ductless Fumehood (LFH-A20) Figure-1...
  • Page 7 Ductless Fumehood LFH-A20 Figure-2 1. Castor 11. Fan Assembly 2. Lower Cabinet (Optional) 12. Operating Panel 3. Socket (Optional) 13. Fluorescent lamp 4. Control Valve for water, Gas Tap 14. Side Panel Acrylic (Optional) 15. External Circuit Hole 5. Side Panel 16.

  • Page 8: Installation

    Ductless Fumehood LFH-A20 7. Installation Unpacking, Installation, and Debugging First, check if the packing box is in good condition. If the packing box is damaged, take photos. Unpacking of Upper Cabinet 1) Method 1: Use an M8 Wrench to unpack.
  • Page 9 Ductless Fumehood LFH-A20 Figure-4 3) Quick unpacking diagram: Remove the screws, as shown below, and then take the wooden box to the left. Figure-5...
  • Page 10 Ductless Fumehood LFH-A20 4) Quick unpacking: Cut the packing tape down with scissors, remove the upper cover of the carton, and then move the carton upwards. Figure-6 Unpacking of Lower Cabinet 1) Unpack with an M8 wrench or electric drill...
  • Page 11 Ductless Fumehood LFH-A20 2) Cut the packing tape down with scissors, remove the upper cover of the carton, and then move the carton upwards. Figure-8 Installation Conditions and Operating Environment Installation position of fume hood should be avoided to face roads and sites people...
  • Page 12 Ductless Fumehood LFH-A20 Process of Installation 1) Remove all packaging components. 2) Check whether the outer surface of the host has scratches, deformations or foreign objects. 3) Check carefully the accessories and information by referring to the packing list in the operating manual.
  • Page 13 Ductless Fumehood LFH-A20 3) Take the activated carbon filter from the paper package and put it in the filter locating slot on the filter mounting panel, and then place the fan assembly above the activated carbon filter located in the bottom, and finally place the second activated carbon filter above the fan assembly.

  • Page 14: Operations

    Ductless Fumehood LFH-A20 8. Operations Structure Composition 8.1.1 Light Source Three anti-fluorescent lamps are used to ensure that the average illumination in the operating area is in line with standard requirements. 8.1.2 Control Panel Main Interface Description Figure-10 1) Power button: Under the power-on state, the icon color is green, at this time, the UV lamp, fluorescent lamp, fan, and socket can be turned on and off;...
  • Page 15 Ductless Fumehood LFH-A20 2) Fan button: When the power button is turned on, click the button, and the icon turns to green, the fan is turned on; when the icon turns to gray, the fan is turned off. 3) Socket button: When the power button is turned on, click the button, and the icon turns to green and the socket is opened;...
  • Page 16 Ductless Fumehood LFH-A20 8) Filter time display: The white area shows the fan's working time, when the time is greater than 3000 hours, it will generate an alarm and prompt "replace the filter." 9) Filter time grid: As the filter time increases, the grid will slowly increase, when the grid is full, the cumulative filter time reaches 3000 hours.
  • Page 17 Ductless Fumehood LFH-A20 Setting Interface Description Figure-11 1) User setting: The user can set a low air velocity alarm value and turn on/off the fan at specified time intervals. 2) System setting: The user can modify the fan gear, debug value, clear filter, and UV...
  • Page 18 Ductless Fumehood LFH-A20 3) Use instruction: Briefly introduce the use method of the product. 4) VOC Alarm setting: VOC setting: Used to adjust the display value and alarm value of VOC. User Setting Interface Figure-12 1) Users can set a low air velocity alarm value independently, one minute after the fan is turned on, if the air velocity is lower than the user-set low air velocity alarm value, the equipment will alarm.
  • Page 19 Ductless Fumehood LFH-A20 2) Start time of regular start/end fan: Users can set fan start time independently, h: hour; m: minute. 3) End time of regular start/end fan ( fan running time): Users can set fan end (running) time independently, h: hour; m: minute.
  • Page 20 Ductless Fumehood LFH-A20 6) Return button: Click this button to return to the main interface and does not memorize the start/end time of the fan set by the user. System Setting Interface Figure-13 1) Velocity display: The white area shows the air velocity value of the air velocity sensor at this time.
  • Page 21 Ductless Fumehood LFH-A20 3) Fan adjust velocity button: The fan gear can be adjusted by clicking this button. 4) Fan gear adjust: The fan gear can be adjusted by clicking the buttons. All in all, there are 70 gears. 5) Reset time: The rest interface will be switched by clicking this button.
  • Page 22 Ductless Fumehood LFH-A20 Reset Interface Figure-14 1) Reset UV time: Click the button, and the UV lamp cumulative time on the main interface will be reset. 2) Reset Filter Time: Click the button, the filter cumulative time on the main interface, and the filter cumulative time will be reset.
  • Page 23 Ductless Fumehood LFH-A20 VOC Alarm Setting Figure-14 1) Display the current VOC alarm value, click on the blank space, pop up the keyboard to set the 18 VOC alarm value that the user needs. 2) Click the increase and decrease button to adjust the intermediate variable of VOC...
  • Page 24 • To protect the safety of users and prevent the spread of pollutants in laboratories, fume hoods are used. • Note: Filters of LFH-A20 series non-ducted fume hood have poor adsorption effect on hydrogen, helium, and inert gases, methane, ethane, ethylene oxide,...
  • Page 25 Ductless Fumehood LFH-A20 2) Working theory/airflow pattern and protected area figure: Figure-15...

  • Page 26: Maintenance

    Ductless Fumehood LFH-A20 9. Maintenance Daily Maintenance • Maintenance should be done every year or every 1000 work hours, and every restart. • First turn off the power before conducting the daily maintenance. • Since the statistics of the operating time will directly affect the judgment of the maintenance needs, we recommend that users prepare a detailed record of the operating time for reference and inquiry when they are using the equipment.

  • Page 27: Troubleshooting

    Ductless Fumehood LFH-A20 Troubleshooting Faults Check Parts Solutions Three anti-fluorescent Switch Check if the fluorescent lamp button has been lamps don’t work turned on. Circuit Check circuit. Control Panel Replace the control panel. Lamp Replace the lamp. The button doesn’t...

  • Page 28: Accessories

    Ductless Fumehood LFH-A20 Accessories Accessory Name Quantity Water Tap Gas Tap Water Sink Base Stand UV Lamp LED Lamp Socket Exhaust Duct-4 meters Active Carbon Filter Foot Switch Upper cabinet (optional) Item Quantity Upper Cabinet 1set User Manual 1copy Test Report...

  • Page 29: Replacement

    Ductless Fumehood LFH-A20 Replacement 1) Replace the fuse • The round fuse at the right side of the fume hood operating panel is determined by the labels, which are F5A φ5 × 20 mm and F10A φ5 × 20 mm.
  • Page 30 Ductless Fumehood LFH-A20 2) Replace the fluorescent lamp When the fluorescent lamp of the fume hood needs to be replaced, lift the acrylic door to hang it on the hook at the top of the control panel, and then disconnect the...

  • Page 31: Circuit Diagram

    Ductless Fumehood LFH-A20 Circuit Diagram Quatro House, Lyon Way, Camberley, Surrey GU16 7ER United Kingdom Email: info@labtron.com | Website: www.labtron.com...

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