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Summary of Contents for Esco Ascent max
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Thank you fo or purchasing thi is Esco Biologica l Safety Cabinet. Please read this ma anual thoroughly y to familiarize yo ourself with the m many unique featu ures and exciting g innovations we have built into y your new equipment. E Esco provides ma any other resour rces at our websi ite, www.escogl lobal.com, to com mplement this m manual and help y you enjoy many years of productive an nd safe use of you ur Esco products . r Serv vice nual l ...
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i Table of Contents INTRODUCTORY PAGES i Table of Contents iii Warranty Terms and Conditions v Introduction v 1. Products Covered v 2. Safety Warning v 3. Limitation of Liability vi 4. European Union Directives on WEEE and RoHS vii Declaration of Conformity USER SECTION 1 ...
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ii 19 4.2 Installation 19 4.2.1 Connecting the Electrical Supply 19 4.2.2 Safety Labels on the Fume Hood 19 4.2.3 Preliminary Cleaning 20 4.3 Performance Validation/Certification 4.3.1 Disclaimer 4.3.2 References for Qualified Certifiers 21 ...
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iii Warranty Terms and Conditions Esco warrants that the product described in this manual will perform according to specifications for a period of 60 months from the date of purchase. Esco’s limited warranty covers defects in materials and workmanship. During the warranty period, Esco's liability shall be, at our option, to repair or replace any defective parts of the product, provided if proven to the satisfaction of Esco that these parts were defective at the time of being sold, and that all defective parts shall be returned, properly identified with a Return Authorization. This limited warranty covers parts ONLY and not transportation / insurance charges. This limited warranty does not cover: • Freight or installation (inside delivery handling) damage. If your product was damaged in transit, you must file a claim directly with the freight carrier • Products with missing or defaced serial numbers • Products for which Esco has not received payment • Problems that result from: External causes such as accident, abuse, misuse, problems with electrical power, improper operating environmental conditions Servicing not authorized by Esco Usage that is not in accordance with product instructions Failure to follow the product instructions Failure to perform preventive maintenance Problems caused by using accessories, parts, or components not supplied by Esco Damage by fire, floods, or acts of God Customer modifications to the product Factory installed, customer specified equipment or accessories are warranted only to the extent guaranteed by the original manufacturer. The customer agrees that in relation to these products purchased through Esco, our limited warranty shall not apply and the original manufacturer's warranty shall be the sole warranty in respect of these products. The customer shall utilize that warranty for the support of such products and in any event not look to Esco for such warranty support. Esco encourages user to register product online at www.escoglobal.com/warranty or complete the warranty registration ...
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vi 4. European Union Directive on WEEE and RoHS The European Union has issued two directives: • Directive 2002/96/EC on Waste Electrical and Electronic Equipment (WEEE) This product is required to comply with the European Union’s Waste Electrical & Electronic Equipment (WEEE) Directive 2002/96/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 the use of Hazardous Substances (RoHS) With respect to the directive on RoHS, please note that this hood falls under category 8 (medical devices) and category 9 (monitoring and control instruments) and is therefore exempted from requirement to comply with the provisions of this directive. ...
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vii Declaration of Conformation In accordance to EN ISO/IEC 17050‐1:2004 We, Esco Micro Pte.Ltd. of 21 Changi South Street 1 Singapore, 486777 Tel: +65 6542 0833 Fax: +65 6542 6920 declare on our sole responsibility that the product: Category : Ductless Fume Hoods Brand : Ascent Max Model : ADC‐2B1, ADC‐3B1, ADC‐4B1, ADC‐5B1, ADC‐6B1 ADC‐3C1, ADC‐4C1, ADC‐5C1, ADC‐6C1 ADC‐3D1, ADC‐4D1, ADC‐5D1, ADC‐6D1 ADC‐3E1, ADC‐4E1, ADC‐5E1 in accordance with the following directives: ...
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1 Chapter 1 ‐ Product Information 1.1 About Ascent Max Ductless Fume Hood Esco Ascent Ductless Fume Hoods provide protection to both laboratory personnel and the environment from toxic fumes and are quickly becoming a viable alternative to conventional fume hoods. Unlike conventional fume hoods, these hoods filter out chemical fumes and recycle air directly back to the laboratory, providing energy savings, personnel and environmental protection, convenience as you do not have to deal with complicated ducting systems, and mobility, as ductless hoods are independent systems which do not require connection to extraction systems. Esco ductless fume hoods are independently tested by INVENT‐UK for the ability to filter contaminated air with efficiency and retention capacity as required by the British Standard BS 7989 and French Standard AFNOR NF X 15‐211. Fume containment and airflow uniformity meet the requirements of ASHRAE 110‐1995, BS 7258, EN 14175‐3 and AFNOR NF X 15‐203. The Esco combination of effective containment and safe carbon filtration opens new, cost effective applications for fume hood technology in laboratories of the 21st century. 1.2 Labels Electrical Requirement Airflow Information Model ‐ The model of the unit. Serial ‐ The serial number of the unit. Power ‐ The power consumption and electrical requirement of the unit. Manufactured year ‐The year of manufacture. Ductless Fume Hoods ...
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12 7 8 1. Exhaust Collar (optional) 7. Stainless Steel Worktop 2. Blower 8. Support Stand (optional) 3. Carbon Filter(s) 9. Electrical/Electronic Panel 4. Tempered Glass Side Wall 10. Esco Sentinel Microprocessor Control 5. Service Fixture Provision (optional) 11. Tempered Glass Sliding Sash Window 6. Electric Outlet Provision (optional) 12. Tempered Glass Back Wall (D Series only) ...
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7 8 1. Exhaust Collar (optional) 8. Support Stand (optional) 2. Blower 9. Backup Carbon (C Series) Filter or 3. Carbon Filter(s) HEPA (E Series) Filter 4. Tempered Glass Side Wall 10. Electrical/Electronic Panel 5. Service Fixture Provision (optional) 11. Esco Sentinel Microprocessor Control 6. Electric Outlet Provision (optional) 12. Tempered Glass Sliding Sash Window 7. Stainless Steel Worktop Ductless Fume Hoods ...
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4 1.4 Airflow Pattern 1. An inflow air curtain from the ambient environment into the cabinet with an average velocity of 0.5 m/s or 100 fpm is induced by the cabinet blower system. 2. Additional inflow air taken through the AutoPurge™ slots at the back of the work zone prevents fume accumulation for better operator protection. 3. The inflow flushes the entire work zone of the cabinet; within the main chamber of the cabinet, negative pressure (relative to the ambient environment) is maintained in order to ensure that no chemical fumes or vapors escape the work zone. 4. Air is taken through an activated carbon filter mounted in the interior; this removes all fumes from the exhaust air stream; exhaust air is re‐circulated directly back to the room from the top of the cabinet. 1.5Filtracheck FiltraCheck is a trademark service provided by Esco’s fume filtration division. Customers who intend to purchase a ductless fume hood but are unsure whether the cabinet is suitable for their application, can forward a list of chemicals that they will be handling and their pattern of usage to Esco'sFiltraCheck service team. A PDF Questionnaire form is available at http://ductless.escoglobal.com/. This questionnaire can be downloaded and either forwarded by email or by fax to Esco. After careful analysis of the provided chemicals list and pattern of usage, a proper advice document will be generated and provided to the customer in 3 days period. This document will recommend the appropriate laboratory equipment; ducted fume hood or ductless fume hood or neither based on the investigation done by the FiltraCheck team. Depending on the type of chemicals used, the document may also contain a list of procedures, warnings, etc. that will help in ensuring a safer laboratory working environment. In the case of a recommendation of a ductless cabinet, appropriate grade and type of activated carbon also becomes a factor that has to be taken into consideration. ...
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5 Chapter 2 ‐ Control System 2.1 Sentinel Control System Menu Set/Mute Up LCD Down Button Button Button Display Button Fan Lamp Socket UV Button Button Button Button 1. Fan Button Turns on and turn off the fan. 2. Lamp Button Turns on and turn off the lamp. 3. Socket Button Turns on and turn off the electrical socket (retrofit kit). ...
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6 2.2Menu Options When you are entering menu options, the alarm will sound to indicate that the microprocessor is not monitoring the operation of the hood and as such will not give airflow alarms. No further warnings will be given. Therefore, it is highly recommended that the user set the ADMIN PIN, which will restrict unauthorized access to the menu. The default ADMIN PIN from the factory is 0009. Please refer to the following diagram for complete reference to all menu options available. Press MENU button and enter the ADMIN PIN to enter the menu. In the menu options: • Press UP or DOWN button to move through the menu options. • Press SET button to choose and proceed to the next step. • Press MENU button to cancel and return to the previous step. Exit menu options after making any changes in order to prevent unauthorized access to the menu. ...
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7 2.2.1 Settings The user may use the settings menu function to customize the operation of the BSC to meet specific application requirements. 2.2.1.1 Set Time Users can set the time by increasing/decreasing the hour and minute values. The correct time will be maintained even after the unit is turned off. 1. Press MENU button to enter the menu options If requested, enter ADMIN PIN digit by digit by using the UP, DOWN and SET buttons The alarm will sound for a few second to indicate that the hood is unsafe for work Press UP and DOWN buttons until display show “SETTINGS”. Press SET button to confirm Press UP and DOWN buttons until display show “SET TIME”. Press SET button to confirm Press UP and DOWN buttons to choose the hour (HH). Press SET button to confirm Press UP and DOWN buttons to choose the minute (MM). Press SET button to confirm 8. Display will show “TIME SET” for a few seconds 9. Press MENU button to exit the menu options 2.2.1.2 Warm Up There will be a period of warm‐up, before the fan is fully functioning. This is to ensure that the sensors, the blower, and the control system are stabilized, as well as purging the work zone of contaminants. The default setting is 3 minutes and the user can set it between 3 to 15 minutes. 1. Press MENU button to enter the menu options If requested, enter ADMIN PIN digit by digit by using the UP, DOWN and SET buttons The alarm will sound for a few second to indicate that the hood is unsafe for work Press UP and DOWN buttons until display show “SETTINGS”. Press SET button to confirm Press UP and DOWN buttons until display show “WARM UP”. Press SET button to confirm ...
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7. Press MENU button to exit the menu options 2.2.1.5 Temperature Unit Using this option, the user can select the unit in which air velocity is measured and displayed. CELCIUS MENU SETTINGS TEMP UNIT FAHRENHEIT 1. Press MENU button to enter the menu options If requested, enter ADMIN PIN digit by digit by using the UP, DOWN and SET buttons The alarm will sound for a few second to indicate that the hood is unsafe for work Press UP and DOWN buttons until display show “SETTINGS”. Press SET button to confirm Press UP and DOWN buttons until display show “TEMP UNIT”. Press SET button to confirm Press UP and DOWN buttons to choose. Press SET button to confirm 7. Press MENU button to exit the menu options 2.2.2 Calibration The purpose of calibration is to ensure the accuracy of the airflow display and alarm (if present). This involves measuring airflow with reference instrumentation and establishing reference between airflow sensor(s) on the hood to the standard reference. Calibration should only be carried out by trained personnel. This section is presents a brief overview of the calibration menu function. For more information, refer to test report. 2.2.2.1 Set Constant Every sensor manufactured by Esco has a specific Sensor Constant which is used for temperature compensation performed by the temperature sensor. 2.2.2.2 Zero Sensor This option let the controller record the specific sensor output voltage and correspond it to 0 m/s or 0 fpm. 2.2.2.3 Calib Sensor This option allows proper calibration and operation of the airflow sensor alarm. There will be three points to be calibrated, namely inflow fail point, inflow nominal point, and downflow nominal point. ...
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9 2.2.3 Admin The admin menu allows you to change both fan and Admin. PIN, also to disable it (not recommended). The reset blower hour meter is usually used after you change the blower (or filter) and it can easily give you the indication on when to do maintenance. While the reset default function will return the options in the settings menu to their factory settings. 2.2.3.1 New Admin. PIN ADMIN PIN restricts access to MENU functions, including service functions, like calibration. User must enter four digits PIN before accessing MENU. ADMIN PIN has higher priority and can be used to control the fan (override Fan PIN). ADMIN PIN can also be used to switch to maintenance mode from ERR.MSWITCH and AIR FAIL! errors condition. The default PIN is 0009. Setting PIN to 0000 will disable this feature. 1. Press MENU button to enter the menu options If requested, enter ADMIN PIN digit by digit by using the UP, DOWN and SET buttons The alarm will sound for a few second to indicate that the hood is unsafe for work Press UP and DOWN buttons until display show “ADMIN”. Press SET button to confirm Press UP and DOWN buttons until display show “NEW ADMIN PIN”. Press SET button to confirm Press UP and DOWN buttons to choose the numerical digit. Press SET button to confirm. Do this for all 4 digits 7. Display will show “CONFIRM PIN?”. Press SET button to confirm 8. Press MENU button to exit the menu options 2.2.3.2 New Fan PIN Fan PIN restricts access to fan control. User must enter four‐digit PIN before switching fan on or off. As such, it can restrict access to operating the hood by unauthorized personnel. Fan PIN is also needed to disable the alarm when the sash is fully raised and cleaning needs to be performed. It is recommended that the Fan PIN be issued only to personnel authorized to use the hood. ...
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10 2.2.3.3 A/F Monitor Whenever the air velocity falls below the fail point, the air fail alarm will be triggered. This option is used to enable/disable alarm. ENABLE MENU ADMIN A/F MONITOR DISABLE 1. Press MENU button to enter the menu options If requested, enter ADMIN PIN digit by digit by using the UP, DOWN and SET buttons The alarm will sound for a few second to indicate that the hood is unsafe for work Press UP and DOWN buttons until display show “ADMIN”. Press SET button to confirm Press UP and DOWN buttons until display show “A/F MONITOR”. Press SET button to confirm Press UP and DOWN buttons to choose. Press SET button to confirm 7. Press MENU button to exit the menu options 2.2.3.4 Filter Type To set the type of main carbon filter(s) used in the hood. The options include standard, acid filter, aldehyde compound, ammonia/amines, halogen compound, mercury compound and sulphur compound. STANDARD ACID FILTER ALDEHYDE CPD. MENU ADMIN TEMP UNIT AMMONIA/AMINES HALOGEN CPD. MERCURY CPD. SULPHUR CPD. 1.
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The alarm will sound for a few second to indicate that the hood is unsafe for work Press UP and DOWN buttons until display show “ADMIN”. Press SET button to confirm Press UP and DOWN buttons until display show “RESET DEFAULT”. Press SET button to confirm The display shows “”READ MANUAL” then “PRESS SET”. Press SET button to confirm 7. Press MENU button to exit the menu options 2.2.4 Setting Mode Ductless fume hood has two working mode, the default normal mode which is used in a day to day activity, and maintenance mode. NORMAL MENU SET MODE MAINTENANCE 2.2.4.1 Normal Mode Every time the hood is restarted, this mode will be activated by default. In this mode, all alarms and interlocks are enabled. 2.2.4.2 Maintenance Mode Maintenance mode should only be accessed by qualified personnel during maintenance. In this mode, all alarms are disabled and all interlocks are defeated. 2.3 Alarm and Warnings The warning AIR FAIL! indicates that there is airflow failure. The operator should check if there is any obstruction to the airflow, and correct it if possible. However, if the problem continues, the operator should stop working as the hood’s protection may have been compromised. Call service or Esco’s local distributor. Other alarms that indicate a failure or an error in the BSC system: ‐ ERR.AIRFAIL will be displayed if the blower is turned off while there is an airflow failure. ‐ ERR.CALIB will be displayed if the airflow velocity sensor is not yet calibrated. Ductless Fume Hoods ...
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13 Chapter 3 – Basic Hood Operation 3.1 Sash Window Operation 3.1.1 Sash Window State Sash is fully open Sash is in safe position Sash is fully closed Blower can be active Blower can be activated Blower can’t be activated Fluorescent lights can be used Fluorescent lights can be used Fluorescent lights can’t be used Unsafe working condition Safe working condition 3.1.2 Operating Motorized Sash Window (Only for hoods with motorized sash window) The motorized sash uses a “push and hold” mechanism, so if you remove your finger from the button the sash will stop immediately – this is a safety feature to control the closure and prevent anything getting trapped in the aperture as the sash descends. Lower Sash from Fully Open Position When the sash is fully open, pressing the down button and holding it will cause the sash to move to the Safe Height setting and stop. If the fluorescent lights are on as the sash descends, they will stay on as long as the sash stops in the Safe Position. If you release the button before the sash has reached Safe Position the 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 fully closed position and stop. If the fluorescent lights are on as the sash descends, they will switch off automatically as soon as the sash reaches fully closed. If you release the button before the sash has ...
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14 3.1.3 Using Sash Window • The sash window should be fully closed when the hood is not in use. This helps keep the work zone interior clean. • The sash window should always be in the normal operating height at all times when the hood is in use. Even if the cabinet is left unattended, but the blower is on, the sash window should never be moved from the normal operating height, unless during loading or unloading of materials/apparatus into the hood. • The alarm will be activated whenever the sash window is moved from the normal operating height. • The sash window may be opened to its maximum position for the purpose of loading/unloading of materials/apparatus into the hood. When the sash window is fully opened, the alarm sound may be muted by pressing MUTE button. Light can be turned on to facilitate cleaning. 3.2 Starting and Shutting Down the Ductless Fume Hood 3.2.1 Turning on the Hood 1. Raise the sash to the indicated normal operational height (READY state). 2. Turn on the lamp by pressing the lamp button. 3. Turn on the fan by pressing the FAN button. Input the Fan PIN if asked (default: 0001). This will start the warm up procedure (default: 3 minutes). All buttons are disabled during warm up period. 4. The hood is ready for work. 3.2.2 Turning off the Hood 1. Turn off the fan by pressing the FAN button. Input the Fan PIN if asked (default: 0001). This will start the post purge procedure (default: 0 minute). All buttons are disabled during post purge period. 2. Lower the sash to the fully closed position. The sash can be lowered immediately after turning off the fan as it will not interrupt the post purge procedure. 3.3 Operating the Ductless Fume Hood 3.3.1Working in the Hood • Check the label on the ductless fume hood to see what chemicals the hood is intended for – and only use the hood for any procedure involving such chemicals. ...
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• Sitting posture is one of the most stressful postures for one’s back Therefore you should pay careful attention to the following guidelines in order to achieve comfortable and healthy working conditions: 1. Always ensure that your legs have enough legroom. 2. Keep your lower back comfortably supported by your chair. Adjust the chair or use a pillow behind your back whenever necessary. 3. You should place your feet flat on the floor or on a footrest. Don’t dangle your feet and compress your thighs. 4. You should keep varying your sitting position throughout the day at regular intervals so that you are never in the same posture for too long. 5. Observe the following precautions with respect to your eyes: • Give your eyes frequent breaks. Periodically look away from the work area and focus at a distant point. • Keep your glasses clean. 6. Arrange the items/apparatus frequently used in your work in such a way that you can minimize the physical strain involved in handling them. 7. Exercise regularly Ergonomics accessories available with Esco include: Armrest padding b. Lab chair Footrest Please contact your local distributor or Esco for more information. Ductless Fume Hoods ...
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17 Chapter 4 – Installation 4.1 General Requirements 4.1.1 Location Requirements Placing the fume hood in a proper location is important. Bad location may affect the performance of the workstation. As seen in the chart, your equipment’s internal airflow velocity is relatively low, when compared to the airflow disturbances potentially caused by the opening of a door, a person walking by or a direct exposure to an air‐ conditioning outlet. These external airflow disturbances can affect the proper laminar flow of the fume hood and impaired the protection offered by the workstation. When installing the fume hood, it should be located as far away as possible from sources of airflow disturbance and in an orientation which optimally shields the fume hood’s airflow from all external airflow disturbances. The following requirements should be taken into account: • The location should be far away from any kind of heat source (heaters, fan converters, etc.) for facilitating optimum operating conditions. • There should be adequate space left for cleaning the back of the cabinet. • There should be unobstructed access to the main power supply point . 4.1.1.1 Position Requirements Any pedestrian traffic routes, thoroughfares or Allow at least 30 cm (1’) clearance on both sides of walkways should be at least 1.0 m (3’) from the front the fume hood. of the fume hood You should not position the fume hood where the distance between the aperture and any doorway is less than ...
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Strap the fume hood body down to the pallet. • Repackage as necessary. If possible, use original packaging. • When moving the fume hood, use material handling equipment and lift the pallet. 4.1.2 Environmental Requirements • Indoor use only • Altitude of up to 2000 meter (6600’) • Relative humidity between 20% – 90% • Temperature between 18 C – 30 C (65 F – 86 F) 4.1.3 Support Requirements • The support/cabinetry should be leveled • The support/cabinetry must be able to withstand the weight of the cabinet and any apparatus within • The support/cabinetry must be ergonomics • Esco recommends Esco support stand with leveling feet for BSC • WithoutEsco’s support stand, Esco cannot guarantee the cabinet’s resistance against tipping and hence the user would be solely responsible for ensuring that the cabinet is securely fastened to third party support/cabinetry. • The use of non‐leveling feet Esco support stand will nullify the third party certification (NSF or TÜV) that the cabinet may have, because only Esco leveling feet support stand was used during certification.The maximum NSF approved leg levelers adjustment is 50 mm (2”). ...
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19 4.1.4 Exhaust Requirements The exhaust filter area is especially susceptible to disruptive air currents or air drafts. A clearance of at least 30 cm (1’) is recommended between the highest point of the cabinet and the ceiling. If the distance is less than 30 cm (1’), the airflow alarm system may need re‐calibration. In fact, for proper exhaust filter leak scanning purposes, a minimum clearance of 50 cm (1’8”) is recommended. 4.1.5Electrical Requirements • The power rating for each model is shown in section 3.2 Technical Specification Summary Table in Product Specification Section. Ensure that the outlet is rated accordingly. The hood will not work properly or may even be damaged if it is powered by an incorrect source. • The hood’s maximum voltage fluctuation is ±2% of nominal voltage, otherwise install power stabilizer. • The hood should be connected to an unobstructed dedicated power outlet(s). • Surge protection and UPS are strongly recommended for better protection. • All electrical wirings for fluorescent lamp, blower and the Sentinel™ controller are internally wired and connected to a single point junction box for hook up by a qualified electrician. • The power cable is located on the right hand side of the fume hood and the cord is 2.5m long. When preparing the installation site, try to ensure the outlet is located to the right of the fume hood for ease of access. 4.1.6 Service Line Requirements • All service lines should be installed by a suitably qualified and certified engineer, in accordance with all applicable local, state and government regulations. • Service line attachments should be equipped with an emergency shut off valve that can be accessed quickly and with ease, should the need arises. • You should check with your local service installer as to whether there is a need to install pressure regulators to reduce the line pressure. • Your ductless fume hood can accommodate service fixtures on the left or right hand side of the cabinet. Make allowance for the positioning of service lines when planning the installation site to ensure ease of access to emergency shut off valves. 4.2 Installation 4.2.1 Connecting the Electrical Supply ...
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20 4.3 Performance Validation/Certification After having installed the fume hood but before starting to use it, fume hood performance must be validated and certified to factory standards. It is recommended that this validation and certification be performed only by a qualified technician who is familiar with the methods and procedures for certifying fume hoods. The testing methods and equipment needed for carrying out the tests are specified on the test report. 4.3.1 Disclaimer The performance and safety of all Esco fume hoods are rigorously evaluated at our factory. Regular field certification is important to ensure factory standards are maintained. During recertification: • Fume Hood face velocities and flow patterns are verified against the manufacturer’s specifications and relevant international standards. • Tracer gas containment test is performed. 4.3.2 References for Qualified Certifiers North America • Esco (www.us.escoglobal.com) UK, China, India, Middle East/North Africa, Malaysia, Singapore • Esco offers field certification services directly. Contact local Esco office. Other Countries • Contact Esco or local distributor ...
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21 Chapter 5–Service and Maintenance 5.1 Scheduled Maintenance Proper and timely maintenance is crucial for trouble free functioning of any device and your Esco ductless fume hood is no exception to this rule. We strongly recommend that you follow the maintenance schedule suggested hereunder in order to obtain optimal performance from your Esco ductless fume hood. Maintenance to be carried out every No. Description of Task to Perform Week Month Quarter 1 Year 2 Years 1 Check the alarm and measure the basic airflow √ 2 Clean the interior work surface and walls with soap water √ 3 Wipe down sash with appropriate glass cleaner √ 4 Clean the exterior surfaces of the ductless fume hood √ 5 Measure the ductless fume hood face velocity √ 6 Check fans, motors, drives and bearings for proper operation √ 7 Check fluorescent tubes for proper operation √ 8 Test the operation of airflow alarm ...
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22 5.2 Replacingthe Filters 5.2.1 Main Carbon Filter(s) Changing Procedure for ADC2__, ADC3__ and ADC4__ Front Panel Handle Clamping Carbon Filter Access Cover 1. Open the Front Panel 2. Open the Access Cover 3. Pull out Handle Clamping to unlock the frame filter clamping 4. Remove the main carbon filter 5. Reverse the above steps to finish the procedure 5.2.2 Main Carbon Filter(s) Changing Procedure for ADC5__ and ADC6__ 1. Open the Front Panel 2. Open the Access Cover 3. Unscrew the bolt holding down the frame filter clamping and remove it 4. Replace the main carbon filter 5. Reverse the above steps to finish the procedure Bolt ...
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23 5.2.3 Secondary Backup Filter Changing Procedure Backup Filter Clamp Secondary Backup Filter 1. Unscrew, open and remove the backup filter clamp 2. Replace the secondary backup filter 3. Reverse the above steps to finish the procedure 5.3 Replacingthe Airflow Sensor 1. Lower the Sash Balancing until below the sensor cover level 2. Open the sensor cover 3. Open the sensor housing (electrical glan) 4. Take the sensor out of the housing 5. Replace the sensor 6. Reverse the above steps to finish the procedure Sensor SensorCover Sash Balancing Ductless Fume Hoods ...
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24 5.4Replacingthe Blower Wire Mesh Blower Mounting For units with secondary backup filter, follow these additional steps: 1. Unscrew, open and remove the backup filter clamp 2. Remove the secondary backup filter The following steps are applicable to all units: 1. Unscrew and remove the wire mesh 2. Disconnect the blower wiring 3. Unscrew the blower mounting 4. Take out the blower mounting, along with the blower 5. Replace blower 6. Reverse the above steps to finish the procedure ...
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25 Chapter 6–Recertification & Calibration Ductless fume hood generally require re‐certification, when: • The hood is re‐located • Hood’s performance is suspected • After filter or blower replacement • At least once a year During recertification: • Cabinet airflow velocities and flow patterns are verified against the manufacturer’s specifications and relevant international standards • Filters are scan‐tested to ensure they do not leak • Operator comfort tests may be performed • If airflow velocities are found to be off set point, adjustments are made as part of the certification process before final values are recorded. Airflow alarm calibration, when: • The cause of the airflow alarm cannot be determined • Re‐certification indicates the displayed airflow deviates by >0.02m/s (4fpm) from actual measured velocities. 6.1 Certification Flowchart Ductless Fume Hoods ...
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26 6.2 Airflow Adjustment The speed controller is located in the electronics panel which is accessed by raising the front engineering access panel at the top of the front of the cabinet and then opening the drop‐down cover by removing the two screws on the front left and right sides of the cover. Speed Controller Plug the multimeter probes to the Motor Voltage Sampling Port. Use the multimeter to take the voltage air velocity reading. Adjust the airflow by adjusting the speed controller. The speed controller may be different for 230V and 115V hood. 6.3 Certification and Calibration Certification and calibration procedure can be found in the test report. ...
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27 Chapter 7 – Troubleshooting This guide addresses the most common service issues. For more trouble shooting or service information contact your local ESCO Distributor. Hardware: • DVM (Digital Voltage Meter). Note: An analog meter can be used for troubleshooting, but cannot be used for motor voltage measurement. • Phillips screwdriver • Insulated jumper cables The ElectricalPanel and Component Layout: Open the front panel, the electrical panel is the red covered box located on the back of the panel. The component layout is as followed: ...
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28 Problem 1: Cabinet does not start (LCD, button, fan light, and socket are inoperative) Cause Corrective Action • Check if there is power at the wall/building electrical socket by using DVM. Power Failure • Ensure the building socket switch is at ON position. • Check whether power cord has been connected properly into wall/building socket Power cord is not connected properly and the unit. Some cabinets have 2 cords. • Measure the AC voltage between the live and the neutral terminal of the cord by or faulty using DVM. • If the voltage is not within ±2% of the wall socket voltage, replace cord; otherwise proceed to next step • See Component Layout to find circuit breaker. Circuit breaker has • Check the circuit breaker inside the electrical panel. tripped NOTE: If circuit breaker has tripped, do not reset the breaker before checking all electrical components and wiring connections. (See Figure 1‐1). • Does the cabinet operate correctly after resetting the circuit breaker? If not proceed to next step. Figure 1‐1 • Ensure cabinet is plugged in to the main supply. Improper • Carefully measure AC voltage between LIVE and NEUTRAL terminal block inside connection ...
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29 • See Component Layout to locate the SMPS. Defective power • Disconnect the 5‐pin connector of the SMPS output, measure the DC voltage supply (SMPS) between Red (pin 1) and White (pin 2) cables on the SMPS side. See Figure 1‐4. • The voltage should be in range of +7.5VDC ±10%. • If out of range, please check incoming power to the SMPS Molded cord into SMPS – check terminal where the cord is connected. The input of SMPS should be 230VAC±10% for ADC‐__1/3 or 115VAC±10% for ADC‐__2. If input is correct but output is not, replace the SMPS. Figure 1‐5 Figure 1‐4 • See Component Layout to locate the main board. Connection • Measure the incoming voltage on the main board at terminal J 13 (Note polarity, problem to main board blue cable closest to edge is negative ‐). See Figure 1‐6. • Voltage should be between 6.75 – 8.25VDC. • If voltage is out of range, check connection between SMPS and main board. • If voltage is correct, proceed to next step. Figure 1‐6 • Restart the cabinet 2 to 4 times. Defective main • The main board is defective if the main board incoming supply is between 6.75 – board ...
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30 • See Component Layout to locate the relay board. Connection • Measure the incoming voltage on the Relay Board at terminal J 1 (Note polarity, problem to relay board BLUE cable closest to edge is negative ‐). See Figure 1‐8. • Voltage should be between 6.75 – 8.25VDC. • If voltage is out of range, check connection between SMPS and relay board. • If voltage is correct, proceed to next step. Figure 1‐8 • Ensure the following are correct: Defective relay board o Main board is operational o Flat Ribbon cable is installed correctly to relay board and main board and shows no physical damage o Relay board has the correct incoming voltage (6.75 – 8.25VDC) o Check all fuses on relay board: Turn off power, remove fuses and physically inspect or check continuity o All wiring connections are good • Turn the cabinet on. If the FAN, LIGHT, SOCKET and cannot be controlled, replace the Relay Board. NOTE: When replacing relay board, please re‐connect all the cables back correctly. Any wrong wiring may result in damage. Figure 1‐9 ...
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31 • Switch off the cabinet. Fuse F1 is blown • See Component Layout to locate the relay board. • Check Fuse F1 on relay board. See Figure 2‐1 below. • If fuse F1 is blown, as temporary solution, use F5 (spare) to replace F1. • If fuse F1 is okay, proceed to next step. Figure 2‐1 • Switch on the blower on the cabinet. Faulty motor speed • See Component Layout to locate the motor speed controller controller • Adjust the knob of the speed controller clockwise to speed up the blower, counterclockwise to lower down the blower speed. • If still the blower doesn't work when fully clockwise already, switch off the cabinet and proceed to next steps below. • Add jumper cables between the 2 cables going to the speed control. This is bypassing the speed controller. See Figure 2‐2/2‐3 below. • Switch on the cabinet. • If the fan operates properly, the speed controller is defective and needs to be replaced. • If the fan does not operate, the problem is not with the speed controller. Please proceed to next step. Figure 2‐2 Figure 2‐3 ...
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32 Power 50Hz 60Hz 115V AC±10% 18‐22μf 230V AC±10% 7.5‐8μf 9‐11μf Table 1 Figure 2‐4 • Turn off the cabinet. Faulty relays • Check LS1 relay on the Relay Board. See Drawing 2‐5 below. • Make sure all wiring and connections are correct. • On terminal J 2, check the NO to Common and NC to Common circuits by checking continuity. • If the NO to Common and NC to Common contacts are not correct, replace the Relay Board. • If the NO to Common and NC to Common contacts are correct, proceed to the next step. • Check K1 relay, see drawing Layout A at the end of this section to locate the K1 relay. • With cabinet still switched‐off, check if the cables connected to the relay socket are tight. See drawing 2‐6 below. • Visually inspect the relay for burnt contacts or flask marks on the inside of the relay case. (Relay is the one with transparent, rectangular, plastic case) • Check NO to Common and NC to common contacts on relay K1. The method is same as for LS1 relay. ...
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33 Problem 3: Airflow Failure (AIRFAIL) – alarm is triggered Cause Corrective Action • Ensure that there are no external sources of airflow disturbance like air conditioner External air interference vent, window or incidences of door opening or people walking fast near the cabinet. • Locate airflow sensor installed inside the work zone. Ensure there is no air disturbance or obstruction around the sensor. • If there is no external air interference, proceed to next step. • Ensure that the air grilles inside the cabinet are not blocked and that the cabinet is Blocked cabinet grille not excessively loaded. • If there is no blockage in air grilles, proceed to next step. • Turn on the cabinet. Low building • Open electrical box and find motor voltage sampling port as shown on Figure 3‐1. supply voltage (if • For new cabinet, if the motor voltage is lower than the Nominal Voltage value new cabinet, check this first) recorded in factory test report, adjust the speed controller to get output voltage to blower as specified in the Test Report – Test Conditions Documentation Sheet. • For cabinet that has been used for more than 1 year, refer to last motor Nominal Voltage from last certification report or if not available, measure the actual airflow on cabinet and increase motor voltage accordingly to achieve nominal airflow velocity. •...
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34 • Press DOWN button until you find below message: ‐ ADC A/F: Show actual ADC value from airflow velocity sensor. ‐ ADC ZERO: ADC value from airflow velocity sensor when air velocity is zero (set during zero calibration) ‐ ADC MIN:ADC value from airflow velocity sensor at airflow failure point (set during sensor calibration). ‐ ADC MAX: ADC value from airflow velocity sensor at airflow maximum point (set during sensor calibration). ‐ ADCTEMP: ADC value from temperature sensor. ‐ TEMP : this is the current ambient temperature read by temperature sensor (in ºC) ‐ CONSTANT: this is the airflow sensor constant ‐ CHM SNSR: ADC value from chemical sensor. • In order to prevent any AIRFAIL or unstable velocity displayed on LCD problem, please ensure the followings after the calibration done: 1. CONSTANT value is correct. Check it with constant written on sensor body or inside Replaceable Component Record List which come with test report. 2. TEMP shows room temperature. If not, refer to nextpossible cause,part B. 3. ADC ZERO < ADC MIN < ADC MAX. If not please re‐do calibration in correct sequence: SET CONSTANT → SET ZERO → CALIB. If CALIBRATION ERROR is encountered, please refer to next possible cause, part A. 4. Just after calibration, ADC A/F value should be somewhere between ADC MIN and ADC MAX. If not, please adjust the speed controller or redo calibration as necessary. Sensor Failure / A. Air Flow Sensor failure / misalignment • Airflow sensor is located inside the unit and can be accessed from the back. See Sensor Misalignment figure 3‐2 below. It is a stainless steel tube with 2 round holes facing up. Important to check: 1. Ensure that the sensor area is not blocked at all and that its through‐holes are perpendicular to the filter’s surface. ...
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35 Figure 3‐3 Figure 3‐2 Sensor Back Panel Access • Check the motor. If motor is not running, refer to ‘Blower doesn’t function’ problem. Motor failure • If motor is working properly, proceed to next step. Problem 4: Contaminated Lab Cause Corrective Action • Adjust the motor speed controller to get the optimum airflow. Low airflow • Change the filters. Leaking filters • Re‐certify the cabinet after the new filter has been installed. Problem 5: Excessive Fan Noise Cause Corrective Action • See Component Layout A or B to locate the motor speed controller. Resonance • Increase the motor speed by 5 – 10 VAC. Check whether the noise disappears. If the noise is already gone, measure the actual airflow velocity. o If the velocity is still in the acceptable range, maintain it. o If velocity is out of acceptable range, or if noise persists, go to next step. • Refer to Problem 2 ‐ Faulty Capacitor section, to check the capacitor, and replace if Loosed motor or ...
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36 Problem 6: Blank LCD Cause Corrective Action • Turn off the cabinet. Connection • See Component Layout to locate the main board. problem • Check whether LCD FRC (Flat Ribbon Cable) has been inserted properly into its socket on the main board. See Figure 6‐1 below. Figure 6‐1 • Turn off the cabinet. Contrast problem • Adjust the potentiometer on main board by rotating the top metal part using flat screw driver to achieve the best LCD contrast. Counter clock‐wise direction will increase the contrast. See Figure 6‐2. • If the LCD remains blank, replace it. Figure 6‐2 • Connect a new LCD to the LCD port on main board (See Component Layout). Defective LCD • If the new LCD functions properly, means the old one is Defective. Replace it. • If the new LCD is not working, check its cable and connector interface to the main board. If all connections okay but LCD doesn't function, replace the main board. Problem 7: Inoperative buttons Cause Corrective Action •...
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37 Figure 7‐1 Figure 7‐2 Figure 7‐3 Figure 7‐4 • Replace them one by one, to check which one(s) among them is/are Defective. Defective Cable • Replace the Defective part(s). and / or Interface Board and / or keypad Ductless Fume Hoods ...
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38 Problem 8: Light always OFF Cause Corrective Action • Move the sash to Ready position (normal operating height). Sash in SASH • Switch on the light by pressing LIGHT button on the membrane. ALARM state • Light can only be ON at Ready sash position. • If light cannot be ON when sash at Ready position, proceed to next step. • Replace the faulty fluorescent tube. Faulty fluorescent • Fluorescent tube is located inside the blue panel. tube • See Component Layout to locate the fluorescent ballast, connector C, and relay Faulty Fluorescent ballast board. • Turn on the cabinetthen the light by pressing LIGHT button on membrane. • Check AC voltage at ballast input (between pin NO on J13 terminal on relay board to neutral), see figure 8‐1. • It should be 230VAC±10% for 230V cabinet or 115VAC±10% for 115V cabinet. • If not, check the LS7 relay and F7 fuse (refer to possible cause faulty relay below). • Turn off the unit. • Disconnect male connector C on electrical box. •...
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39 • Turn off the cabinet. Connection • See Component Layout to locate the relay board, fluorescent ballast, and connector Problem C inside electrical box. • Check for any loose or bad connection between relay board, fluorescent lamp ballast, and female connector C. • See figure 8‐1 to locate terminal J 13 on relay board, check tightness of 2 cables connected to J 13. • For connector C, disconnect the male side from electrical box, then check male and female side for any bad connection. • Check also connection of the lamp holder (see figure 8‐3). Figure 8‐3 • Turn off the cabinet. Faulty relay or fuse • See Component Layout to locate the relay board. • Check relay LS7 and fuse F7 on the relay board. See Figure 8‐4. • If fuse F7 is blown, replace with F5 (spare). • On terminal J13, check the NO to Common and NC to Common circuits by checking continuity. • If the NO to Common and NC to Common contacts are not correct, replace the Relay Board. • If the NO to Common and NC to Common contacts are correct, proceed to the next step. Figure 8‐4 ...
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40 • Turn off the cabinet. Faulty relay or fuse • See Component Layout to locate the relay board. • Check LS4 relay and fuse F4 on the relay board. See Figure 9‐1 below. • If fuse F4 is blown, replace with F5 (spare). • On terminal J 6, check the NO to Common and NC to Common circuits by checking continuity. • If the NO to Common and NC to Common contacts are not correct, replace the Relay Board. • If the NO to Common and NC to Common contacts are correct, proceed to the next step. Figure 9‐1 • Socket is located inside the work zone. Faulty electrical • Check electrical socket connection. socket • If connection is correct but socket has no output, replace electrical socket. Software Troubleshooting Error Code Corrective Action • Magnetic switches are located inside right profile cover. ERR.MSWITCH A. Check for faulty Magnetic switch(es): ...
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43 8.1.3 General Specification ADC‐2B_ ADC‐3B_ ADC‐4B_ ADC‐5B_ ADC‐6B_ External Dimension 730 x 736 x 1460 mm 1035 x 736 x 1455 mm 1340 x 736 x 1455 mm 1645 x 736 x 1455 mm 1950 x 736 x 1455 mm (W x D x H) 28.7” x 29.0” x 57.5” 40.7” x 29.0” x 57.3” 52.8” x 29.0” x 57.3” 64.8” x 29.0” x 57.3” 76.8” x 29.0” x 57.3” Internal Work Area 660 x 596 x 765 mm 965 x 596 x 765 mm 1268 x 596 x 765 mm 1575 x 596 x 765 mm 1880 x 596 x 765 mm (W x D x H) 26.0” x 23.5” x 30.1” 38.0” x 23.5” x 30.1” 50.0” x 23.5” x 30.1” 62.0” x 23.5” x 30.1” 74.0” x 23.5” x 30.1” Pre‐Filter Disposable, non‐washable polyester fiber, 85% arrestance, EU3 rated Standard Activated carbon with granular media bed Filter Main Filter (7 different filter types available, codes A to G) ...
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45 8.2.2 General Specification ADC‐3C_ ADC‐4C_ ADC‐5C_ ADC‐6C_ External Dimension 1035 x 736 x 1460 mm 1340 x 736 x 1460 mm 1645 x 736 x 1460 mm 1950 x 736 x 1460 mm (W x D x H) 40.7” x 29.0” x 57.5” 52.8” x 29.0” x 57.5” 64.8” x 29.0” x 57.5” 76.8” x 29.0” x 57.5” Internal Work Area 965 x 596 x 765 mm 1268 x 596 x 765 mm 1575 x 596 x 765 mm 1880 x 596 x 765 mm (W x D x H) 38.0” x 23.5” x 30.1” 50.0” x 23.5” x 30.1” 62.0” x 23.5” x 30.1” 74.0” x 23.5” x 30.1” Pre‐Filter Disposable, non‐washable polyester fiber, 85% arrestance, EU3 rated Activated carbon with granular media bed Main Filter Standard Filter (7 different filter types available, codes A to G) Activated carbon with granular media bed Backup Filter (7 different filter types available, codes A to G) 2 x (10.3 kg) each ...
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46 8.3 Ascent Max ADC_D_ Series 8.3.1 Engineering Drawing 1. VOC sensor (optional) 2. Blower 3. Electrical/Electronic Panel 4. Carbon Filter(s) 5. Pre‐Filter 6. Fluorescent Lamp 7. Tempered Glass Sides 8. Plugged Service Fixture Provision (2 on each side) 9. Stainless Steel Worktop 10. Esco Sentinel Microprocessor Control 11. Tempered Glass Sliding Sash Window 12. Tempered Glass Back Wall 13. Electrical Outlet Kit Provision 14. AutoPurge Slots ...
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47 8.3.2 General Specification ADC‐3D_ ADC‐4D_ ADC‐5D_ ADC‐6D_ External Dimension 1035 x 736 x 1455 mm 1340 x 736 x 1455 mm 1645 x 736 x 1455 mm 1950 x 736 x 1455 mm (W x D x H) 40.7” x 29.0” x 57.3” 52.8” x 29.0” x 57.3” 64.8” x 29.0” x 57.3” 76.8” x 29.0” x 57.3” Internal Work Area 965 x 596 x 765 mm 1268 x 596 x 765 mm 1575 x 596 x 765 mm 1880 x 596 x 765 mm (W x D x H) 38.0” x 23.5” x 30.1” 50.0” x 23.5” x 30.1” 62.0” x 23.5” x 30.1” 74.0” x 23.5” x 30.1” Pre‐Filter Disposable, non‐washable polyester fiber, 85% arrestance, EU3 rated Standard Filter Activated carbon with granular media bed Main Filter (7 different filter types available, codes A to G) 2 x (10.3 kg) each 2 x (13.9 kg) each 2 x (17.4 kg) each 3 x (13.9 kg) each Total Weight of Carbon in the Main Filter ...
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49 8.4.2 General Specification ADC‐3E_ ADC‐4E_ ADC‐5E_ External Dimension 1035 x 736 x 1485 mm 1340 x 736 x 1485 mm 1645 x 736 x 1485 mm (W x D x H) 40.7” x 29.0” x 58.5” 52.8” x 29.0” x 58.5” 64.8” x 29.0” x 58.5” Internal Work Area 965 x 596 x 765 mm 1268 x 596 x 765 mm 1575 x 596 x 765 mm (W x D x H) 38.0” x 23.5” x 30.1” 50.0” x 23.5” x 30.1” 62.0” x 23.5” x 30.1” Pre‐Filter Disposable, non‐washable polyester fiber, 85% arrestance, EU3 rated Activated carbon with granular media bed Standard Filter Main Filter (7 different filter types available, codes A to G) Backup Filter HEPA filter, typical efficiency of >99.99% at 0.3 microns, removes particulates and aerosols 2 x (10.3 kg) each 2 x (13.9 kg) each 2 x (17.4 kg) each Total Weight of Carbon in the Main Filter 2 x (22.7 lbs.) each 2 x (30.6 lbs.) each ...
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Brown Green Black Black Blue White Green ESCO Black ! White Green ELECTRICAL CIRCUIT DIAGRAM MODEL : ADC-_B/C/D/E2 With Motorized Black...
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LOG RECORD Fume Hood : _______________________________________________________________ Serial Number : _______________________________________________________________ Person in Charge : _______________________________________________________________ 1. This log record should be used by the operator to record any new chemical that has been introduced to the cabinet during its operation, problems encountered, etc. 2.
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