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14 

 

Always ensure that your legs have enough legroom. 

 

Keep  your  lower  back  comfortably  supported  by  your  chair.  Adjust  the  chair  or  use  an  appropriate 
support (e.g. pillow) behind your back whenever necessary. 

 

You  should  place  your  feet  flat  on  the  floor  or  on  a  footrest.  Don’t  dangle  your  feet  and  compress 
your thighs. 

 

You should vary your sitting position throughout the day at regular intervals so that you are never in 
the same posture for too long. 

 

Observe the following precautions with respect to your eyes: 

o

 

Give  your  eyes  frequent  breaks.  Periodically  look  away  from  the  work  area  and  focus  at  a 
distant point. 

o

 

Keep your glasses clean. 

 

Arrange the  items/apparatus  frequently used  in your  work  in such  a  way  that you  can  minimize the 
physical strain involved in handling them. 

 

Exercise regularly. 

The  BSC’s  noise  emission  has  been  tested  and  found  to  be  in  compliance  with  EN  12469,  ISO  4871  and 
NSF/ANSI 49 which is important to ensure health and comfort for the operator. 

Ergonomics accessories available from Esco include: 

 

Armrest padding 

 

Lab chair 

 

Footrest 

Please contact your local distributor or Esco for more information. 

3.5.

 

UV Lamps (If Present) 

Shortwave  UV  (UVC)  is  considered  as  germicidal  and  virucidal.  The  UV  lamp  that  Esco  provides  has  a  large 
portion of the spectrum in the UVC range. Unlike many other types of decontamination agent, UV light does 
not  leave any residue.  The  decontamination action stops upon de-energizing of  the lamp. However, the UVC 
spectrum does not penetrate well.  

 

UV light decontamination method may be used before and after working with susceptible organisms. 
However, it  should not  be the sole decontamination  agent. Chemical decontamination  agent  should 
still be used. 

 

There should be minimal amount of material inside the BSC’s work area during the process of UV light 
decontamination. A direct interaction with UV  light can degenerate plastic or rubber-based material 
and can cause other hazards (e.g. Generation of hazardous vapors).  

 

Before  activating  the  UV  lamp,  the  BSC  sash  should  be  in  fully  closed  position  and  the  user  should 
ensure  that  interlock  is  working  properly.  Avoid  direct  contact  with  skin  and  eyes  as  UV  light  is 
classified as a probable human carcinogen. 

 

The UV timer feature should be used to easily control the decontamination period (

Note:

 UV timer is 

disabled  by  default)

.  Leaving  the  UV  lamp  on  for  over  60  minutes  or  even  overnight  is  not 

recommended because it shortens the lifespan of the lamp.  The UV lamps used in Esco BSCs have a 
lifespan of 2,000 hours.  

 

The  UV  lamp  should  be  cleaned  of  any  dust  and  dirt  weekly  and  changed  annually  to  ensure  its 
effectiveness. Ensure that the lamp is turned off when lamp cleaning and maintenance is carried out. 

 

Please  note  that  the  use  of  UV  lamp  in  a  BSC  has  been  explicitly  discouraged  in  all  major  international 
standards and recommendations. 

3.6.

 

Decontamination and Disinfecting Agents 

 

For stainless steel surfaces, all common disinfectant agents, except chlorine-based ones, are suitable. 
Where  chlorine-based  agents  are  used,  sterile  water  should  be  used  to  wipe  down  the  surfaces 
following the application of the disinfectant agents. 

 

For powder coated surfaces, all common disinfectant agents are suitable. However, the BSC has been 
specifically evaluated for use with the following: 

Содержание Class II

Страница 1: ...of productive and safe use of your Esco products For Technical Service contact North America Esco Technologies Inc 2940 Turnpike Drive Units 15 16 Hatboro PA 19040 USA Toll Free USA and Canada 1 877...

Страница 2: ...change Sentinel and Airstream are registered trademarks of Esco Material in this manual is provided for informational purposes only The contents and the product described in this manual including any...

Страница 3: ...3 1 2 Operating Motorized Sash Window Only for BSC with motorized sash window 12 3 1 3 Using Sash Window 12 3 2 Starting and Shutting Down the BSC 12 3 2 1 Turning on the BSC 12 3 2 2 Turning off the...

Страница 4: ...hapter 7 Troubleshooting 344 7 1 Electrical and Mechanical Troubleshooting 51 7 2 Software Troubleshooting 533 Chapter 8 Engineering Details 533 8 1 AC2 _E_ Engineering Drawing 54 8 2 AC2 _S_ Engineer...

Страница 5: ...ons Failure to perform preventive maintenance Using accessories parts or components not supplied by Esco Damage by fire floods or acts of God Customer modifications to the product Consumables such as...

Страница 6: ...duct Appendix Warranty Listings Biological Safety Cabinets Laminar Flow Cabinets HEPA Filtered Cabinets except Streamline brand 4 years limited Laboratory Fume Hoods 2 years limited Ductless Fume Hood...

Страница 7: ...ns given in this manual may result in damage to the unit injury to operating personnel and or poor equipment performance Any internal adjustment modification or maintenance to this equipment must be u...

Страница 8: ...EC It is marked with the following symbol Esco sells products through distributors throughout Europe Contact your local Esco distributor for recycling disposal Directive 2002 95 EC on Restriction on...

Страница 9: ...following directives 2006 95 EEC The Low Voltage Directive and its amending directives 2004 108 CE The Electromagnetic Compatibility Directive and its amending directives has been designed to comply w...

Страница 10: ...ectives 2004 108 CE The Electromagnetic Compatibility Directive and its amending directives has been designed to comply with the requirement of the following Harmonized Standard Low Voltage EN 61010 1...

Страница 11: ...k tray Figure 1 1 AC2 Gen 3 general parts 8 Exhaust Collar Optional 9 Exhaust ULPA Filter 10 Electrical Panel 11 Curved Front Panel 12 Display Panel 13 Fluorescent Lamps 14 Side Window 15 IV Bar Retro...

Страница 12: ...oves the menu options upwards and downwards o Increases and decreases corresponding value inside one of the menu options o Moves the sash window upward and downward for motorized sash BSC o For access...

Страница 13: ...ety Cabinets o To go back to the previous level of the menu options o To access maintenance mode from error condition 2 2 Menu Options Please refer to the following diagram for complete reference to a...

Страница 14: ...ng upon activation of the unit This is to ensure that the sensors the blower and the control system are stabilized as well as to ensure the work zone is purged of contaminants The default setting is 3...

Страница 15: ...e BSC has three modes and two of which normal mode and quickstart mode can be used in daily activity Both of these modes can be seen and accessed when you enter the FAN PIN The last mode maintenance m...

Страница 16: ...00 DISABLED FAN PIN restricts access to fan control and some parts of the menu settings and set mode User must enter the four digit PIN before switching the fan on or off This feature prevents unautho...

Страница 17: ...sent This option is used to reset the UV lamp hour meter The UV lamp hour meter indicates how long the UV lamp has been in operation Maximum counter is set at 2 000 hours 100 The counter value can be...

Страница 18: ...y position Pressing UP button again while the stopwatch function is activated will stop and resume the timer Use the DOWN button to exit the stopwatch function and reset the timer The timer in the sto...

Страница 19: ...nge UV LIFE Shows percentage of UV lamp life based on UV Lamp Hour Meter UV TIMER Shows the UV timer value default is 60 minutes Maximum value is 00 minutes infinite on MUTE TIMER Shows the mute timer...

Страница 20: ...s typically used during the night to maintain basic level of containment where the cabinet is not used by the operator The mode can be accessed by pressing the FAN button when the cabinet is in operat...

Страница 21: ...e lights will switch off automatically Lower Sash from Safe Height Position When the sash is at safe operating height pressing the down button and holding it will cause the sash to move down to the fu...

Страница 22: ...turn on when this height is reached Note When Quickstart mode is selected fan will turn on as well without pressing the fan button 2 Turn on the fan by pressing the FAN button Input the Fan PIN if as...

Страница 23: ...urface in the BSC Place aerosol generating instruments as far back in the BSC as possible and at least 150 mm 6 inches from clean items materials Place air turbulence generating equipment such as cent...

Страница 24: ...ed before and after working with susceptible organisms However it should not be the sole decontamination agent Chemical decontamination agent should still be used There should be minimal amount of mat...

Страница 25: ...tly be carried out by means of formaldehyde fumigation or using other decontamination agents such as chlorine dioxide or hydrogen peroxide Decontamination process should only be carried out by qualifi...

Страница 26: ...16...

Страница 27: ...window with appropriate disinfectant and glass cleaner afterward Use a damp cloth to clean the exterior surface of the BSC particularly on the front and top in order to remove dust that has accumulate...

Страница 28: ...ons to airflow Care must be taken as the area is contaminated Figure 4 1 Paper catch access Pre filter Installation 1 Insert the pre filter to the opening of the paper catch as shown in image 1 above...

Страница 29: ...2 Unscrew the two aluminum covers using Philip head screw driver 3 Unscrew the two aluminum switch brackets using the Philip head screw driver 4 Tilt up the sash glass freely for cleaning 4 2 Mainten...

Страница 30: ...annot be determined o Re certification indicates the displayed airflow deviates by 0 02 m s 4 fpm from actual measured velocities only for products with airflow velocity displays Decontamination befor...

Страница 31: ...nsure the fan and lamps are turned on The cabinet should then be put to maintenance mode In Maintenance Mode all alarms are defeated and the window can be moved without the light being switched off 1...

Страница 32: ...cate speed controller positioned toward right side of electrical panel 4 Plug the multimeter probes to the Motor Voltage Sampling Port 5 Adjust the airflow by adjusting the speed controller 5 3 2 1 In...

Страница 33: ...unless and until the inflow and or downflow velocity can no longer be maintained within the specifications 1 Before the filters are removed from the BSC their contaminated faces should be taped off us...

Страница 34: ...d AC2 _S_ 1 Move the Sash Window down until it reaches the armrest Note For motorized sash BSC remove the window straps after moving the sash window to the lowest position 2 Remove red plenum cover us...

Страница 35: ...te For motorized sash BSC remove the window straps after moving the sash window to the lowest position 3 Remove red plenum cover using Phillips screwdriver 4 Remove the secondary exhaust filter mounti...

Страница 36: ...rom downflow filter Caution Be careful when adjusting the bolt adjusters This might damage the filter gasket 4 Take out the downflow filter carefully 5 To install new filter just do a reverse procedur...

Страница 37: ...fter the front panel is secured 3 The fluorescent lamp s is located behind the blue panel Disconnect the old one s and replace with the new one s 5 4 4 UV Lamp Replacement Procedure 1 Carry out necess...

Страница 38: ...located on top of the cabinet The sensor can easily be accessed in these cabinets 1 Start by removing the damper unscrew on top of the cabinet for AC2 _E_ AC2 _S_ damper not applicable for AC2 _D_ and...

Страница 39: ...hnut sensor housing from the bracket Figure 5 10 Remove doughnut sensor housing 6 Install the new sensor it comes with the doughnut sensor housing into the bracket and connect the sensor cable connect...

Страница 40: ...decontamination formalin gas presents the following health risks External contact can cause irritation to skin eyes and mucous membranes Inhalation in small concentrations can cause coughing nausea an...

Страница 41: ...n Being a true gas it spreads quickly without the need of pulsing the BSC s blower It can rapidly kill the micro organisms with high efficacy with just 1 hour contact time User must note that the conc...

Страница 42: ...1 One port located in front opening or side wall penetrating the work zone area 2 One port located on top of the exhaust filter The generator used defines the port function as described below Steris B...

Страница 43: ...To seal the cable first make an shape aluminum tape around the cable and make a 5 cm flat portion going to both directions Then paste the aluminum tape to the floor 6 Put the bottom part of the decont...

Страница 44: ...n be used for troubleshooting but cannot be used for motor voltage measurement Phillips screwdriver Insulated jumper cables The Electrical Panel and Component Layout Open the front panel the electrica...

Страница 45: ...d correctly to the wall outlet NOTE Some cabinets have 2 cordsets Disconnect the power cord at the cabinet and measure the AC voltage between the live and the neutral terminal of the cord If the volta...

Страница 46: ...l blocks the problem is between connector A and the terminal strips If voltage is not present at connector A but voltage is measured at the female connector for the line cord at the top of the cabinet...

Страница 47: ...ard and the display and key pad The larger flat cable is for the Display The smaller flat cable is for the LEDs keypad membrane If the LCD Display is on but not the LEDs in keypad membrane check conne...

Страница 48: ...a new LCD to the LCD port on main board If the new LCD functions properly this indicates the old one is defective If the new LCD does not work replace the large Flat Ribbon Cable If the LCD still doe...

Страница 49: ...button on control panel Enter the Fan PIN number if required default is 0001 The LED for FAN should illuminate and the FAN should start If the FAN does not operate Proceed to the next step If the LED...

Страница 50: ...k the voltage between the BLUE Neutral terminal block and the end terminal on the LS1 circuit J2 on relay board Detection of voltage at the end terminal with no cable indicates that the F1 fuse is goo...

Страница 51: ...try to turn the potentio to maximum and minimum to check for response If ECMS responds to the adjustment check PWM output with the multimeter If ECMS produces PWM output ECMS is likely not defective...

Страница 52: ...next step Low building supply voltage if new cabinet check this first Refer to the electrical layout and find motor voltage Test Point shown in Figures 4 2 and 4 3 NOTE The voltage adjustments should...

Страница 53: ...w is not good please adjust motor speed controller accordingly until alarm is turned off and the LCD shows nominal airflow reading After this if LCD still shows AIRFAIL Proceed to the next step The se...

Страница 54: ...ered please refer to next possible cause part A 2 Just after calibration ADC IFA value should be close to ADC IFN value If not please adjust the speed controller to make both values closer by at least...

Страница 55: ...the next step Problem 6 Excessive Blower Noise Cause Corrective Action Resonance Note Requires a Certifier or qualified personnel Locate the motor speed controller Measure the motor voltage and recor...

Страница 56: ...elay board Locate LS7 circuit and measure AC voltage between BLUE NEUTRAL terminal block and the end terminal with Red cable on the three terminal strip J13 on relay board If there is voltage to the e...

Страница 57: ...Sash not in UV state Lower the sash to UV mode position If SASH FULLY CLOSED is not displayed on the LCD please refer to the Magnetic Switch troubleshooting section Switch on the UV lamp by pressing t...

Страница 58: ...he K2 coil to Connector D and the neutral wiring from K2 to the DC Power supply If wiring connections are OK visually inspect K2 relay for any burnt or flash marks If burnt or flash marks are present...

Страница 59: ...ED is on If there is power to the relay and it is energized Check voltage across Connector B pin 1 to 2 and pin 4 to 5 If there is power through Connector B pins remove socket outlets from wall Check...

Страница 60: ...that the correct DC line voltage is connected properly and turned on Replace the ECMS with a new one Figure 11 2 ECMS showing the power indicator The output voltage cannot be adjusted by turning the...

Страница 61: ...c Switch 3 Magnetic Switch 4 Description Close Open Open Open Sash is fully opened ALARM is given ALARM can be muted Open Close Open Open Cabinet sash is at nominal height ready to use Open Open Close...

Страница 62: ...if air fails No No SASH ALARM Sash Position Detection Yes Yes Yes Current Time Display Yes Yes Yes Sash Alarm Yes not mutable Yes not mutable Not Applicable Fan Control Yes without WARM UP PURGING ti...

Страница 63: ...53 Class II Biological Safety Cabinets Chapter 8 Engineering Details 8 1 AC2 _E_ Engineering Drawing...

Страница 64: ...54 8 2 AC2 _S_ Engineering Drawing...

Страница 65: ...Required Exhaust With Optional Thimble Exhaust Collar 260 cmh 153 cfm 320 cmh 189 cfm 538 cmh 317 cfm 615 cmh 362 cfm 823 cmh 485 cfm Static Pressure For Optional Thimble Exhaust Collar 28 Pa 0 11 in...

Страница 66: ...56 8 4 AC2 _D_ Engineering Drawing...

Страница 67: ...57 Class II Biological Safety Cabinets...

Страница 68: ...58 8 5 AC2 _G_ Engineering Drawing...

Страница 69: ...ficiency 99 999 at 0 1 to 0 3 micron as per IEST RP CC001 USA 99 999 at MPPS as per EN 1822 H14 EU Sound Emission NSF ANSI 49 62 3 dBA 65 5 dBA EN 12469 61 3 dBA 62 5 dBA Fluorescent Lamp Intensity lu...

Страница 70: ...60 8 7 AC2 2N7 Engineering Drawing A C 2 2 N 7 E n g i n e e r i n g D r a w i...

Страница 71: ...61 Class II Biological Safety Cabinets...

Страница 72: ...l Thimble Exhaust Collar 260 m3 h 153 cfm Static Pressure For Optional Thimble Exhaust Collar 28 Pa 0 11 in H2O ULPA Filter Efficiency Downflow 99 999 at 0 1 to 0 3 micron as per IEST RP CC001 USA 99...

Страница 73: ......

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