Biobase BBS-DDC - User Manual

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document is a user manual for the BIOBASE Vertical Laminar Flow Cabinet, covering models BBS-DDC, BBS-SDC, BBS-DSC, and BBS-SSC.

Function Description

The Laminar Flow Cabinet is a LAF Cabinet designed for sample protection. It is a work bench or similar enclosure that creates a particle-free working environment by taking air through a filtration system and exhausting it across a work surface in a laminar or unidirectional air stream. The laminar flow cabinet is enclosed on the sides and kept under constant positive pressure to prevent the infiltration of contaminated room air. This model is a vertical laminar flow cabinet.

Important Technical Specifications

The manual provides detailed technical parameters for different models (BBS-DDC, BBS-SDC, BBS-DSC, BBS-SSC). Here's a summary of key specifications:

General Parameters (BBS-DDC/BBS-SDC):

External Size (WDH): 1040×615×1770 mm (BBS-DDC), 1440×615×1770 mm (BBS-SDC)
Working Zone Size: 940×540×545 mm (BBS-DDC), 1340×540×545 mm (BBS-SDC)
Work Surface Height: 750mm
Display: LED Display
Airflow Velocity: Average of 0.3~0.5m/s
Material:
- Main Body: Cold-rolled steel with anti-bacteria powder coating
- Work Table: 304 stainless steel
- Side Windows: 5mm toughened glass, anti-UV
Pre-filter: Polyester fiber, washable
HEPA Filter: 99.999% efficiency at 0.3um
Noise: <65dB
LED Lamp: 12W1 (BBS-DDC), 16W1 (BBS-SDC)
UV Lamp: 18W1 (BBS-DDC), 30W1 (BBS-SDC)
- Emission of 253.7 nanometers
Consumption: ≤350W (BBS-DDC), ≤600W (BBS-SDC)
Waterproof socket: Two, total load≤500W
Caster: Universal caster with leveling feet
Power Supply AC: 220V±10% or 110V±10% (selectable)
Frequency: 50 Hz or 60Hz (selectable)
Standard Accessory: LED lamp, UV lamp*2, Base stand
Gross Weight: 150kg (BBS-DDC), 174kg (BBS-SDC)
Package Size (WDH): 11908901340mm (BBS-DDC), 15908901340mm (BBS-SDC)

General Parameters (BBS-DSC/BBS-SSC):

External Size (WDH): 1040×660×1770 mm (BBS-DSC), 1440×660×1770 mm (BBS-SSC)
Working Zone Size: 940×560×545 mm (BBS-DSC), 1340×560×545 mm (BBS-SSC)
Work Surface Height: 750mm
Display: LED Display
Airflow Velocity: Average of 0.3~0.5m/s
Material:
- Main Body: Cold-rolled steel with anti-bacteria powder coating
- Work Table: 304 stainless steel
Pre-filter: Polyester fiber, washable
HEPA Filter: 99.999% efficiency at 0.3um
Noise: <65dB
Front Window: Manual, 5mm toughened glass, anti-UV
Max Opening: 350mm
LED Lamp: 12W1 (BBS-DSC), 16W1 (BBS-SSC)
UV Lamp: 18W1 (BBS-DSC), 30W1 (BBS-SSC)
- Emission of 253.7 nanometers
Consumption: 350W (BBS-DSC), 600W (BBS-SSC)
Waterproof socket: Two, total load≤500W
Caster: Universal caster with leveling feet
Power Supply AC: 220V±10% or 110V±10% (selectable)
Frequency: 50 Hz or 60Hz (selectable)
Standard Accessory: LED lamp, UV lamp*2, Base stand
Gross Weight: 150kg (BBS-DSC), 174kg (BBS-SSC)
Package Size (WDH): 11908901340mm (BBS-DSC), 15908901340mm (BBS-SSC)

Additional Electrical Characteristics:

Vibration Amplitude: The net vibration amplitude between 10Hz and 10KHz is less than 5µm (rms).
Illumination: Average illumination is not less than 350 lx.
Electrical Characteristic: The voltage increases to 1390V (AC) in 5s and keep for another 5s without breakdown.
Ground resistance: ≤0.1Ω

Usage Features

The manual outlines several usage features and instructions:

Installation and Unpacking:

The cabinet is shipped in a wooden box and requires specific tools for unpacking, such as an electric drill with a hexagon dead M8 bit and an M8 wrench.
Careful inspection of the packing box and its contents upon arrival is crucial.
The base stand assembly involves attaching casters and leveling feet using hexagon cylinder head bolts, flat washers, and spring washers.
The cabinet is then placed on the base stand, aligning positioning bolts and fastening them with hexagon socket head screws, flat washers, and spring washers.
Direct installation is completed for the base stand part at the time of transport, meaning it is put at the back of the laminar flow cabinet. The base stand should be taken out before installing.
When carrying the laminar flow cabinet, it should be lifted from the top-for-bottom, dumping place, and dismantling are forbidden.

Operating Environment:

The laminar flow cabinet should be placed in a position where the airflow can be protected.
It should not be installed opposite to a door or window and far away from the air outlet of an air conditioner to avoid airflow influence from ventilating systems.
A minimum gap of 300mm must be kept between the side and back of the cabinet and the wall for clean operating and inspection.
Working environment conditions:
- Only applicable to indoor operation.
- Ambient temperature: 15℃~35℃.
- Relative Humidity: ≤75%.
- Atmospheric pressure range: 70 kPa~106 kPa.
- Electrical parameters: Adequate power supply to the Laminar flow cabinet (See 2.1.4 Technical Parameters).
- Power supply needs to be grounded; judging method: test the live wire and the neutral wire of the socket with a multimeter. The voltage between live and ground should equal to the voltage of local electrical grid, and the voltage between neutral and ground should equal to 0. Otherwise the power supply is not grounded correctly.

User Instructions:

The control panel features buttons for gear indicator, increase/decrease air velocity, fan, UV, and light.
To control UV lamp, UV lamp, fans and LED lamp are interlocked. UV lamp will automatically turn off when opening the fans or LED lamp.
The front window is controlled by constant force spring. It can be stably stopped at any height during allowed height. It still can be controlled and take out samples inside when power off.

Safety Precautions:

WARNING: Before operating the unit, be sure to read carefully and fully understand important warnings in the operating instructions.
NOTE: Direct installation is completed for base stand part at the time of transport or it is put at the back of the laminar flow cabinet. Base stand should be taken out before installing. When carrying the laminar flow cabinet, top-for-bottom, dumping place and dismantling are forbidden.
SERIOUS DECLARATION: BIOBASE WILL NOT BE RESPONSIBLE FOR ANY RISK OR DAMAGE ARISING FAILURE DURING USAGE BY UNTRAINED OPERATOR AND MISHANDLING THE LAF. THE OPERATOR OF THE LAMINAR FLOW CABINET SHOULD BE TRAINED ENOUGH BEFORE USING THE LAF.
For safety of eyes and skin, people should leave the room during UV sterilization.
UV lamp should be checked regularly. It should be replaced when either the total working time reaches 600 hours or the intensity is lower than the requirement.
Move up the front window to reasonable height above the work table and turn on the blower. Make sure the experiment should be started after fan working for at least 30 minutes.
For operating safety, please put testing materials inside the cabinet in advance. After finishing the experiment, please fully close the front window, and make sure to sterilize the cabinet by UV lamp for 30 minutes before turning off the cabinet.
The cabinet is equipped with main power fuse. For double-pane window, it is located beside the power cord's outlet. For single glass, they are both located at the back of the power cord's outlet. Fuse label is corresponding to the relevant specifications. Please refer to 3.5.1 and picture 3.2 when changing fuse protector.

Maintenance Features

The manual details various maintenance aspects to ensure the longevity and proper functioning of the device.

Daily Maintenance:

Remove all items inside the cabinet.
Clean the cabinet with a soft cotton cloth soaked with concentrated liquid soap. Afterwards, wipe off the foam with another cotton cloth or towel which has been soaked with clean hot or warm water. At the end wipe the entire surface with a dry cotton cloth or towel rapidly.
For contaminated or dirty work surface and sump, use medical alcohol or other disinfectant to wipe.
NOTE: Disinfectants used for wiping should not damage the 304 stainless steel.

External Surface and Front Window Cleaning:

Use a piece of soft cotton cloth or towel with non-abrasive household cleanser to wipe the surface.

Comprehensive Maintenance Period:

The recommended interval for comprehensive maintenance is one year or 1000 working hours.

Maintenance Methods:

Daily or weekly maintenance:
- Disinfect and clean the operating area (reference to 2.4.1).
- Clean the external surface and front window (reference to 2.4.2).
- Check the various functions of equipment.
- Record down the maintenance result.
Monthly maintenance:
- Clean the external surface and front window (reference to 2.4.2).
- Use towel with 70% medical alcohol or 1:100 dilution of household bleach to wipe the working table, the inner face of front window and the inner wall surface of the working area (exclude the top wind grid). Use another towel with sterile water to wipe those area to erase remain chlorine.
- Check the various functions of cabinet.
- Record down the maintenance result.
Annual maintenance:
- Check the two lifting belt of the front window tubular motor, make sure both of them are well connected to the motor with same tightness.
- Check the UV lamp and LED lamps.
- Apply for overall performance test of the cabinet annually to ensure that the safety meets requirements. User is responsible for testing costs.
- Record down the maintenance result.
- NOTE: Cut off the power during maintenance.

Storage Conditions:

Laminar flow cabinet should be stored in a warehouse with relative humidity no more than 75%, and temperature lower than 40 °C.
The warehouse should have good ventilation performance, without acid, alkali and or other corrosive gases.
Storage period should not exceed one year.
Laminar flow cabinet stored for more than one year needs to be unpacked and checked before selling and using.
Only the tested and qualified Laminar Flow Cabinet could be sold.

Replacement Parts: The manual provides detailed lists of replacement parts for each model (BBS-DDC, BBS-SDC, BBS-DSC, BBS-SSC), including:

Fuse (10A)
Lamp holder T8
UV Lamp (T6 18W, T6 30W, T5 28W)
LED T5 Supporting Frame (T5 12W, T5 16W)
UV lamp ballast (1TL8-18W, 1TL8-30W)
High efficient filter (90045050mm, 130045050mm)
Fan (FS133Q)
Control panel (Laminar flow cabinet control panel (Ten light pillar))
Glass (9605805mm, 13605805mm)
Constant force spring (405L, 405S), nylon sleeve, nylon sleeve baffle

Troubleshooting and Solution: A comprehensive troubleshooting guide is provided for common faults such as:

LED lamp fail to work (check stand plug, stand, circuit, control panel, interlock, lamp holder)
UV lamp fail to work (check circuit, UV lamp, ballast, control panel)
Button fail to work (check control panel, button, wiring, power supply)
Blower fail to work (check blower, circuit, control panel)
No electricity in socket (check power supply, power cable, fuse, transformer, connection wires, display screen, control panel)

Replacement Procedures:

Fuse Replacement: Located at the back, for double side operation ones, power input socket is located in the side. Use a Phillips screwdriver to unscrew the fuse holder, replace the fuse, and screw it back.
LED Lamp Replacement: Turn off the power, remove the LED stand, unplug the right side, and replace with a new LED stand, inserted into the inclined slot.
UV Lamp Replacement: UV lamp should be replaced regularly (every 600 hours or when intensity is low). Turn off the power. Unscrew the lamp to take down from holder, then replace with a new one. To remove the lamp, turn counter-clockwise or anticlockwise screw 90°. To install, put a new lamp into the holder, clockwise or anticlockwise screw 90°, then turn on the power and test it.

Warranty:

12 months from EX-factory date (excluding consumable accessories, UV and LED lamp, fuse).
BIOBASE is not liable for any repair of damage caused by improper operation.
If the warranty has been expired, BIOBASE is still responsible for repair with relative charges.
Life time of laminar flow cabinet is 8 years from production date on the label.
BIOBASE will provide equipment drawings and necessary technical data for maintenance companies or personnel trained by Biobase engineers.