Caution: Please read this Manual thoroughly. If
Contents
1. Caution Please read this Manual thoroughly If you do not understand or are unsure of any information contained in this Manual please contact your Agent or BIOQUELL for Clarification OPERATING MANUAL ASTEC MONAIR 5 180 8 001 _MiCROFLOW zzz E C Part BIOQUELL UK Limited BIOQUELL UK LTD 52 Royce Close West Portway Andover Hampshire SP10 3TS Tel 01264 835835 Fax 01264 835836 Email enquiries bioquell com Revision 3 http www bioquell com Page 1 of 31 JE DESCRIPTION DATE C R NO _ ORIG CHKD APPRD Re 16Jun2000 __ Pm Bc sc 2 Address and telephone numbers update Noy 2005 SS cD e Important please read this manual before using this equipment CONTENTS i Introduction Installation Operating Instructions Fitting and Removal of Filters Contro Panel Display Board Monitoring Maintenance Trouble Shooting _ Filter Types UK Occupational Exposure Limits 2000 Chemical Applications 12 Specification Appendices 1 Notes on COSHH Regulations UK Only Calibration Electrical Diagram Testing and Calibrating the Filter Saturation Alarm Protocol for Testing Monitoring Replacement and Disposal of Filters Care and Cleaning o CE Certificate on HH A ou N Warranty Page 2 of 31 1 INTRODUCTION The Monair 5 fume cup2. 12 months 2000 hours Note Use the shortest time scale that applies FILTER TEST PROCEDURE After installation or when test or monitoring is required the following procedure should be completed a Ensure the unit is switched on and confirm the airflow is correct by measurement or examination of the low airflow alarm b Introduce the chemical challenge that is normally in use within the unit or a less harmful equivalent for example Iso Propyl Alcohol IPA c Test the exhaust or the filter test port to confirm there is no evidence of the chemical If the chemical has been detected then the following checks should be completed This test can be simply carried out using Gastec or Draeger detector tubes and the appropriate hand held pump Test pumps and tubes can be supplied by Astec Microflow d Note for some chemicals the chemical tube technique is not the best method for measurement For example Gluteraldehyde should be tested using OSHA 64 American standard method for accuracy Notes Ensure the filter is correctly fitted with the seal seated and compressed 2 Ensure that there are no gaps in the filter seal 3 Change the filter and retest 4 If the chemical by pass continues contact your agent service provider or Astec Microflow FILTER DISPOSAL HEPA and Carbon filters must be disposed of safety in accordance with local legislation and regulations Page 27 of 31 APPENDIX 6 CARE AND CLEANING STAIN
3. Proprionic GP Valeric GP Alcohols Ethyl GP Amyl GP Butyl GP Cyclohexanol GP Isopropyl GP Methyl methanol GP Propyl GP Aliphatic Hydrocarbons Acetylene GP Iso butane GP Butylene GP Butadiene GP Cyclohexane GP N decane GP Ethane GP Ethylene GP N heptane GP Heptylene GP Hexane GP Hexylene GP Methane GP N nonane GP N octane GP N octylene GP Pentane GP Propane GP Propylene GP Aromatic Hydrocarbons Benzene GP Napthalene GP Ninhydrin GP Styrene monomer GP Toluene GP Toluidine GP Xylene GP Esters Butyl acetate GP Cellosolve acetate GP Ethyl acetate GP Ethyl acrylate GP Ethyl formate GP Isopropyl acetate GP Methyl acetate GP Methyl acrylate GP Methyl formate GP Methyl methacrylate GP Equilibrium Saturation Capacity Aldehydes and Ketones Acetone GP Acetaldehyde FOR Acrolein GP Benzaldehyde GP Butyraldehyde GP Caproaldehyde GP Crotonaldehyde GP Cyclohexanol GP Diethyl ketone GP Dipropyl ketone GP Formaldehyde FOR Gluteraldehyde FOR Mesityl oxide GP Methyl butyl ketone GP Methyl ethyl ketone GP Methyl isobutylketoneGP Propionaldehyde GP Valeraldehyde GP Valeric aldehyde GP Ethers Amy GP Butyl GP Cellosolve GP Dioxan GP Diethyl ethyl ETH Ethylene oxide GP Isopropyl GP Methyl cellosolve GP Methyl ETH Propyl GP Halogens Bromine GP Butyl chloride GP Carbon tetrachloride GP Chlorine GP Chlorobenzene GP Chlorobutadiene GP Chloroform GP Chloro picrin GP Chloro nitropro
4. green indicator lamp will indicate that power is connected to the unit The fan will run at full soeed ready for normal operation of the fume cupboard and the lights if fitted will come on The cupboard can be used immediately LOW AIRFLOW ALARM The alarm is a red light located at the front of the unit In normal operation the red light will not come on If the red indicator lamp starts to flash on intermittently or stays on the pre filter is starting to block with dust and an airflow reading should be taken at the aperture to determine if the pre filter requires changing The correct operation of the alarm may be tested as described in Appendix 2 instructions on replacing filters are given in Section 4 of this manual FILTER STATUS IF FITTED The green LED is constantly displayed while the filter is actively absorbing the chemical fumes The light goes out every six seconds as the mechanism samples the air stream When a chemical breakthrough is detected the red light comes on intermittently and an audible alarm bleeps four times every minute showing the filter requires changing See Appendix 4 for calibration and testing Page 9 of 31 6 MONITORING GENERAL Under the Control of Substances Hazardous to Health COSHH regulations it is mandatory to check safety equipment at suitable intervals for correct operation A suggested maintenance schedule is given in Section 7 of this manual This section of the manual revi
5. 1 Unscrew anticlockwise switch by 2 turns The red warning light should now be off 2 Screw switch clockwise until the red warning light JUST comes on Page 22 of 31 3 Unscrew switch by 5 degrees half an hour on the HOUR hand of a clock so the red warning light goes out 4 Check calibration by switching the unit off and wrap the pre filter in a plastic bag and replace flat in the unit Switch on The warning light should come on It should be noted that the alarm is NOT an ON OFF device but will start to flicker as the pre filter progressively blocks with dust Page 23 of 31 APPENDIX 3 ELECTRICAL DIAGRAM 1250 V ac 1 AMP K 1 AMP 7 NEUTRAL I ON OFF i EARTH I PRESSURE i i SWITCH gt E s i I ws l Z 25 58 l AIRFLOW aa l LOW LIGHT l I 5 HEAD UNIT i Page 24 of 31 APPENDIX 4 TESTING AND CALIBRATING THE FILTER SATURATION ALARM TESTING THE FILTER SATURATION ALARM 1 Switch on the unit the green indicator lamp comes on Release the filter clamp Place a small amount of alcohol isopropanol on a tissue and hold above the filter to introduce the fume into the airstream The red indicator lamp should come on and the audible alarm sound 4 If a malfunction is indicated by steps 1 or 2 then a calibration procedure may be required Details are provided below Remember to remove the paper before return
6. 1989 The regulations are the UK implementation of an EEC Council Directive 80 1107 EEC The regulations require an employer to protect his employees and any other people whether working for him or not from hazardous substances A hazardous substance is defined as a A substance which is on the list of hazardous substances as defined by the Classification Packaging and Labelling Regulations 1984 b b A substance for which an Occupational Exposure Limit OEL value exists This list is similar to US Threshold Limit Value levels TLV Amicro organism which creates a health hazard d Dust at a substantial concentration in air D Any substance which creates a hazard to health similar to the hazards created by the substances in a to d Note Paragraph 4 e is a catch all section The employer is responsible for assessing the risk to an employee The employer must prevent or control the exposure of an employee to hazardous substances The control of exposure shall be secured by measures other than the provision of personal protective equipment This means the fumes must be contained rather than providing protective suits and masks to staff OEL values must not be exceeded The employer must ensure that safety equipment is properly used The employee must use safety equipment provided correctly The employer must maintain safety equipment in good working order in particular a Exhaust ven
7. LESS STEEL COMPONENTS Considerable care has been taken in the selection and processing of the stainless steel components used in the construction of this equipment however even stainless steel can be damaged by chemical attack It is therefore important to ensure that any cleaning or disinfecting procedures used will not cause a chemical attack that may damage the surface of the stainless steel Work surfaces should be kept clean and free of chemical liquids particularly those containing Chlorine Liquids or vapours containing Chlorine are known to cause gradual staining of stainless steel To avoid this when chemicals are used containing Chlorine all surfaces should be thoroughly dried and all traces of the solution removed the area should then be treated with a neutralising agent Open vessels left inside the equipment which are likely to cause Chlorine vapours may also result in staining of the metal surfaces Should the surface of the stainless steel become stained it may be cleaned by mechanical polishing and special treatment of the affected area Our service department can help with this process PLASTIC COMPONENTS Cleaning of the plastic items should only be carried out with mild detergent or chlorine based cleaning solutions Care must be taken not to apply chlorine solutions to any stainless steel metalwork as this will potentially cause staining Do not apply heat abrasive materials solvents or solvent wipes to the surfa
8. N ie ae ee a ane SIDE Pav REAR ACRYLIC PANEL a E RE RE cn AG A N A LEFI SIDE PANEL S Ap Figure 2 Monair 5 Fume Cupboard Components Page 4 of 31 Assemble the base as follows 1 Screw the acrylic back panel to the side panel legs using four self tapping screws with nylon washers and black caps provided 2 Screw door panel set to side panel legs using self tapping screws nylon washers and black caps provided 3 An optional joining kit is available to join two bases together In this case discard the adjacent side panels with legs and replace with the n shaped connecting frame supplied in the kit The Monair 5 head unit is provided with the following contents 1 Head casing 2 Light fitting and electric socket 3 1 x piece of white criss cross egg crate 4 1 x piece of white Filtrete pre filter 5 1 x main filter 6 1 x filter clamping bar Assemble the Head unit as follows 1 Place the head unit on top of the assembled base 2 Screw the light fitting to the rear of the head unit using the M5 screws provided this will secure the head to the base Plug in the electrical cable in to the socket on the rear of the unit 3 Remove the front plate by undoing the 2 x black thumb screws 4 Bring the handle on the filter clamp across the unit from right to left to loosen the clamping 5 Slide the filter into the
9. and the next test for fume bypass of the filter in some applications where heavier loads of chemicals are applied or the chemicals are dangerous then filter testing should be completed weekly or monthly The monitoring period is the maximum period between the filter installation test and the regular weekly monthly filter monitoring for fume bypass The change period is the maximum period between the filter installation and the time to change the filter All the test monitor and change periods are expressed in months Therefore in units of higher usage the month recommendation will be superseded by the earlier number of hours Note The test monitor or change should be completed at the earliest point whether this be for example 6 months or 1000 hours which ever is sooner 4 CARBON FILTER LIFE It is important to note that once the sealed bags containing carbon filters have been opened they will absorb water from the atmosphere Therefore after 24 months the filters potential life cannot be assured and should be replaced The filter test protocol should be applied during all test monitoring and filter change stages The protocol is to confirm that the filter is correctly fitted and is absorbing the fumes intended Page 26 of 31 Filters ought to be tested 6 monthly monitored 9 monthly and changed 12 monthly Months to Hours conversion 1 month 175 hours 3 months 500 hours 6 months 1000 hours 9 months 1500 hours
10. as not been reached Page 6 of 31 The electrical equipment in the cabinet including light fittings and control equipment are in separate enclosures on the clean side of the filter The equipment should not be used in a flammable room atmosphere Specially modified equipment can be provided for use in solvent rooms Contact BIOQUELL or your local dealer distributor for further information Page 7 of 31 4 FITTING AND REMOVAL OF FILTERS Hazards associated with the removal and disposal of used filters will depend on the use to which the filtration fume cupboard has been put If an activated carbon filter is used with hydrocarbon solvents the filter will retain the solvents without loss and can be removed in the open laboratory A pair of plastic gloves and a plastic bag are supplied with each filter The plastic gloves should be used when removing filters The used filters should be placed in the plastic bag and sealed prior to waste disposal preferably by incineration If dangerous materials such as asbestos dust or radioactive chemicals have been contained by the filter then operator protection which includes the use of respirators and protective clothing may be required The used filter may require disposal by a specialist company As the conditions of use are outside Bioquell UK Ltd control it is the responsibility of the user to ensure that any personnel changing filters are advised of any potential hazards in handling the filters a
11. board has been designed to produce a compact unit that will provide operator safety with an easy to use cabinet i Figure 1 Monair 5 Fume Cupboard Airflow Schematic The main work area has a face velocity of gt 0 5 m s to provide containment of fumes The optional work surface is polypropylene and will contain spillages The airflow schematic is shown in Figure 1 The head unit contains the mains switch low airflow alarm carbon filter and lights The unit contains 1 x 4 kg carbon filter Page 3 of 31 2 INSTALLATION WARNING INSTALLATION SHOULD ONLY BE CARRIED OUT BY TRAINED AND APPROVED ENGINEERS OR AGENTS ASTEC MICROFLOW OR ITS AGENTS CANNOT ACCEPT RESPONSIBILITY FOR DAMAGE LOSS OR INJURY CAUSED BY OR RESULTING FROM INCORRECTLY INSTALLED EQUIPMENT The units are supplied with an open base and can be positioned over an existing utility such as a sink or on a balance bench or can be used with the optional removable spillage tray The unit has an electrical plug fitted with a 3 Amp fuse Installation of the Monair 5 The Monair 5 base unit is provided flat packed with the following contents see Fig 1 2 x side panels with attached legs 2 1 x Acrylic back panel 3 Front hinged door panel set LIGHT a ae FIER ACCESS PANEL aie 25 A MLSS Pa Se oe ee wee O gee Wy ee FRONT GLAMIG bt ig
12. ce as this can cause irreparable damage PAINTED AND OTHER COMPONENTS Caution Do not use water around electrical connections switches etc To clean all painted and other components use a damp cloth and when required a liquid detergent Note Do not use abrasive cleaners or chlorine based cleaning products Page 28 of 31 APPENDIX 7 CE CERTIFICATE EC DECLARATION OF CONFORMITY FOR ATTACHMENT OF MARK We the manufacturer BIOQUELL UK Limited 52 Royce Close Portway Industrial Estate Andover Hampshire SP10 3TS Tel 44 0 1264 835835 Fax 44 0 1264 835836 Declare under our sole responsibility that the appliance Monair 5 Recirculatory Fume Cupboard Serial Number as stated on Certificate of Factory Testing Complies with the Protection Requirements of the Electromagnetic Compatibility Directive 2004 108 EC and the Machinery Directive 2006 42 EC by means of the following harmonised standard BS 61326 1 2006 Tested By TRaC Holly Grove Farm Verwood Road Ashley Ringwood Hants BH24 2DB Certificate No 6620 09 Other harmonised standards used 61010 2001 Responsible Person Name O R Cumberlege Position Director Date 10 March 2010 Page 29 of 31 APPENDIX 8 WARRANTY INFORMATION BIOQUELL UK Ltd produces products that are warranted under normal usage against defects in workmanship and materials for one year parts and labour costs from the date of manufa
13. cture The Warranty is stated in the Standard Terms and Conditions of sale Export and Agent retailed products are warranted directly by the Agent Please confirm your warranty and liability status with the Agent In addition the Warranty is void unless the following conditions are met a The product has been installed and used as stated within the Instruction Manual b The warranty does NOT include servicing or maintenance An approved service company who have attended our training courses for your product must carry out maintenance of product Failure to maintain or service this product will invalidate the warranty Maintenance must be carried out in accordance with the Service Manual and include tasks within stated periods Failure to use approved service companies or BIOQUELL UK Ltd trained personnel for maintenance also affects the CE Marking status of the product removing BIOQUELL s Duty of Care and responsibility c Consumables such as pre filters main filters light bulbs and tubes not warranted d This Warranty is void if faults are caused by accidental damage mishandling adjustment by unauthorised personnel or failure to follow the correct maintenance and safety precautions as stated in the Instruction Manual e The Warranty expressly provided for herein is the sole Warranty provided in connection with the product and no other Warranty expressed or implied is provided BIOQUELL UK Ltd assumes no respon
14. cuts out Motors are fitted with a thermal cut out device which will operate if the motor temperature rise exceeds 95 C The most likely cause of overheating is a blockage of the airflow either at the filters or at the exhaust outlet at the top of the unit Low airflow alarm will operate Low airflow light the red indicator lamp comes on at switch on and stays on a The filter is not sealed correctly in the head unit Check the filter gasket is sealing correctly b The fan has failed c The alarm is malfunctioning See Appendix 2 Low airflow light the red indicator lamp comes on at switch on goes off then comes on again a The pre filter is blocked with dust Page 13 of 31 b If replacement of the pre filters does not cause the red light to stay off then the low airflow alarm requires recalibration as described in Appendix 2 FOR FURTHER ADVICE PLEASE CONTACT BIOQUELL UK LTD Page 14 of 31 9 FILTER TYPES PRE FILTERS Filtrete pre filter This is a high performance pre filter designed to remove particulates from the airstream The filter material is based on electrets which are permanently charged di electrics They remove particulates from polluted air by strong electrostatic forces generated by the fibres from which they are made The combination of strong electric charge and open structure provides a filter with high efficiency low airflow resistance and high loading capacity Measured efficiency f
15. efficiency gt 99 but has a somewhat reduced capacity compared to single impregnated filters It contains noble metals OAL Filter This odour filter is normally used in air purifiers to deal with odours from excreta urine and other materials essentially alkaline in nature OAC Filter Air purifier odour filters for human and animal acid type smells caused by bacterial decay such as cadaverine and putrescine and other odours which are acidic in nature HEPA Filter The High Efficiency Particulate Air filter is a pleated glass fibre material sealed with epoxy resin in an aluminium frame Each filter is tested to ensure a stated particulate filtration efficiency usually 99 997 according to US Standard 209B or BS 3928 A HEPA filter is sometimes known as an absolute filter EDU Filter The EDU filter has been specially formulated to adsorb the normal range of chemical fumes generated in Schools during GCSE and A level classes Advice is available from BIOQUELL UK LTD Page 16 of 31 10 UK OCCUPATIONAL EXPOSURE LIMITS 2000 The updated Occupational Exposure Limits are available on www hse gov uk coshh table1 pdf The exposure limits are expressed in parts per million by volume ppm under the following headings a Long Term Exposure Limit 8 hour time weighted average reference period b STEL Short Term Exposure Limit 15 minute reference period Gastec or Drager sampling tubes are available for most ch
16. emicals 11 CHEMICAL APPLICATIONS INTRODUCTION The table overleaf gives a list of common laboratory chemicals together with the filter recommended and an estimate of filter capacity The recommended filter is the main single layer filter used for the application It may be possible to use other filters such as the MIL filter or a Multi Layer filter In all cases the filter efficiency for a single layer filter will be close to 100 Chemicals marked are poorly absorbed by all filters and should be used in small quantities only Their exhaust concentration may however be quite low due to dilution with air and retardation in the filter matrix The filter capacity is given as the equilibrium saturation capacity a standard test procedure for activated carbon ASTM D3467 The capacity is expressed as the final filter weight at saturation as a percentage of initial filter weight In many cases these values have been determined by experiment in other cases estimated values are used based on experience with activated carbon material and a knowledge of the chemical structure The actual capacity obtained will depend on the conditions of use but the breakthrough point to reach the OEL of the chemical may be up to 70 of this value for normal input loadings Page 17 of 31 Chemical Filter Type Acids Acetic GP Acetic anhydride GP Acrylic GP Butyric GP Caprylic GP Carbolic GP Formic ACI Lactic GP Osmium tetroxide GP Palmitic GP Phenol GP
17. eodorisers Detergents Hospital odours Human odours Leather Ozone Nicotine Perfumes Petrol Putrescine Resins Toilet odours AMM AMM AMM GP AMM GP AMM AMM CYN GP GP ACI GP GP ACI GP GP GP GP AMM GP GP GP OAL GP GP GP GP GP GP GP OAC OAC GP GP GP GP GP OAC GP OAL 12 SPECIFICATION AIRFLOW Volume of air treated 200 m hr Average face velocity gt 0 5 m s Lighting 1x15W Low Airflow Alarm Fitted FILTERS Main 4 kg 1 off 450 x 450 x 40 mm SIZE Width 600 mm Depth 580 mm Overall height 800 mm Internal working height 500 mm Weight 37 Kg CONSTRUCTION Head and base Epoxy coated mild steel frame and head unit Colour Grey Back Panel Clear acrylic Side Panels Clear acrylic Front doors Clear acrylic Spillage Tray optional Polypropylene Fan Centrifugal type ELECTRICAL Voltage Supply 230 V 50 Hz Single phase or 120V 60Hz Or 100V 50 60H Switches Mains On Off Fuses 2x3 Amp Power rating Max 90 Watts Current Drawn 0 4amps at 230V 0 8amps at 120V 100V OPTIONS 1 Polypropylene work surface tray 2 Filter saturation alarm ENVIRONMENTAL CONDITIONS Indoor use only Temperature 10 C to 35 C Maximum relative humidity 80 Main supply voltage fluctuations not to exceed 10 of nominal Pollution degree 1 Page 19 of 31 APPENDIX 1 NOTES ON COSHH REGULATIONS UK ONLY The Control of Substances Hazardous to Health COSHH regulations effective from 1st October
18. every 12 months 1 Check the condition of services to the cupboard including water supply drip cup waste drain where fitted gas supply where fitted and electric cable and plug 2 The electrical earthing and insulation should be inspected by a qualified electrician 3 Check the fan for correct running Page 12 of 31 8 TROUBLE SHOOTING WARNING BEFORE ATTEMPTING ANY INSPECTION OF ELECTRICAL COMPONENTS IN THE ASSEMBLY ALWAYS ISOLATE THE UNIT FROM THE MAINS ELECTRICITY SUPPLY Electrical components are mounted behind the control panel Access to the electrical components is gained by removing the grill on top of the head undoing the six retaining screws and sliding the control panel out Some possible problems and their causes are shown below 1 Unit will not operate no lights or airflow a Check that unit is plugged in and switched on b Check fuse in mains supply or plug where fitted c Check fuses in electrical input socket Unit operates but the fluorescent light does not come on Disconnect the electrical connection and remove the two screws holding the light box on a Ensure light tube correctly seated b Replace starter lamp c Replace fluorescent tube Fan does not operate a Change motor start capacitor on fan Access to fan is by removing the plate on top of the unit b Motor failure contact Astec or your local distributor for advice Fan operates initially but then
19. ews the manual methods of checking the unit The purpose of monitoring is to detect when the pre filters or main filters cease to operate effectively If the pre filters are blocked the airflow will be reduced at the fume cupboard aperture If the main filters are saturated they will cease to remove the fumes effectively The Monair units are fitted with a low airflow alarm Details for testing and calibration are in Appendix 2 A Manual check of the filters ought to be carried out once every three months as described below whether the filter saturation has been fitted or not If an odour is noticed it is sensible to check the fume cupboard However it must be remembered that the sense of smell is very sensitive for some chemicals e g ammonia or hydrogen sulphide and a slight smell does not mean that the exhaust levels of chemical have approached the maximum acceptable concentration MANUAL MONITORING Manual monitoring should be carried out yearly to check the integral systems on the unit Airflow Measurements An anemometer should be used to check the airflow face velocity at the working aperture with the lower panel down Any suitable anemometer may be used including hot wire propeller or vane anemometer A minimum of six readings should be taken across the working aperture Note the result in a record book kept for this purpose This is mandatory under COSHH regulations We advise changing the pre filter if the average airfl
20. igures for particles in the 0 5 2 0 micron range is 99 with loading capacities up to 113 g m Filtrete will remove fine particles aerosols and mists MAIN FILTERS Fourteen different types of filter media are available for the main filter bed Most of these are impregnated activated carbon to provide a higher filter capacity for lower molecular weight organic compounds and inorganic gases and vapours A number of filter efficiency studies have been carried out and all results using single bed filters show efficiencies very close to 100 1 GP Filter The most widely used filter in the range primarily for solvent fume removal It is manufactured from coconut shell based activated carbon of 5 10 mesh size and surface area up to 1300 m gm Filtration is achieved by the physical adsorption of molecules in the pores of the activated carbon by Van de Waals forces This filter will remove any chemical with a molecular weight greater than 30 and a boiling point greater than 60 C 2 ACR Filter This filter is impregnated with halide salts and is used for the high efficiency removal of radioactive iodine and methyl iodide It is frequently used for iodination reactions with low level radioactive iodine and efficiencies in excess of 99 99 have been measured 3 ACM Filter This filter is impregnated with iodine compounds for removal of mercury vapour The filter has been demonstrated to remove mercury from a saturated airstream at ambient te
21. ing to routine use CALIBRATION FILTER SATURATION BOARD The detector has been set up in the factory before delivery However the unit may require a slight adjustment in some environments 1 Take the cover off the electrical enclosure The sensor board is located in the top left hand corner The adjustment potentiometer is located on the centre left hand side of the board 4 Using a small screwdriver or adjustment tool turn the potentiometer clockwise to desensitize or anticlockwise to increase sensitivity Page 25 of 31 APPENDIX 5 PROTOCOL FOR TESTING MONITORING REPLACEMENT AND DISPOSAL OF FILTERS BEST PRACTICE In order to clarify best practice for the use of carbon filters Astec Microflow would like to recommend the following guidance This guidance is primarily for Carbon filters but High Efficiency Particulate HEPA filters are referred to when appropriate 2 FILTRATION Carbon filter technology has been safely applied for the absorption of harmful vapours and fumes for many years However there still exists some doubt with users as to the best practice with regard to filter monitoring and changing Astec Microflow has detailed best practice in the following product group Tables 1 2 and 3 Each of these tables express recommended test monitoring and change periods in months assuming a 40 hour working week 3 TEST PROTOCOL TERMS The test period is the maximum period between the filter installation test
22. ive from 1st October 1989 it is mandatory to maintain written records of checks tests and repairs carried out on safety equipment and these records must be kept for 5 years A Summary of COSHH Regulations are provided in Appendix 1 Regular maintenance will reduce the possibility of hazard to the operator and prolong the life of the unit WARNING BEFORE ATTEMPTING ANY INSPECTION OR REPLACEMENT OF ELECTRICAL COMPONENTS IN THE ASSEMBLY ALWAYS ISOLATE THE UNIT FROM THE MAINS ELECTRICITY SUPPLY Airflow The Monair units are fitted with a low airflow alarm With this model you should test the alarm once a year as described in Appendix 2 of this manual to ensure it is operating correctly Filter Saturation The Monair units do not have a filter saturation detection system fitted as standard however the option is available The filter condition should be monitored regularly whether the saturation detection system has been fitted or not i e every 3 months or more frequently if required Cleaning and Inspection You should carry out the following procedures at six monthly intervals Remove the spillage tray where fitted and wash in dilute detergent solution 2 Wash the interior surface of the cupboard with dilute detergent solution 3 Inspect the cupboard frame and panels for mechanical damage 4 Inspect the hinged door for corrosion and correct adjustment of friction hinges where fitted The following checks should be made
23. mperature to below 5 parts per billion ppb in the exhaust airstream 4 AMM Filter This filter is impregnated with copper compounds to efficiently remove vapour from dilute ammonia solutions and to remove low molecular weight amines 5 ACI Filter This alkali impregnated filter will neutralise volatile inorganic acid vapours such as hydrochloric and hydrofluoric acids and acid gases such as sulphur and nitrogen dioxides 6 SUL Filter A potassium iodide impregnated filter designed to remove hydrogen sulphide and low molecular weight mercaptans 7 CYN Filter A multi impregnated filter to a military specification for removal of hydrogen cyanide gas Many cyanide compounds will evolve HCN gas if Page 15 of 31 acidified so this filter is normally specified if working with any cyanide compound FOR Filter This filter is impregnated with an oxidising agent to oxidise formaldehyde to formate salts It is widely used in hospital pathology laboratories ETH Filter Diethyl ether is adsorbed on activated carbon but because of its low boiling point the local heat of adsorption can reduce the capacity of the filter Special impregnation allows a chemical reaction which increases filter capacity MIL Filter As the name implies this filter is multi impregnated to handle a wide range of chemicals defined by the Ministry of Defence It will efficiently remove solvent fumes acid fumes hydrogen sulphide cyanides and arsine at high
24. nd are provided with any necessary protective equipment or clothing The safety officer in your organization can normally advise Changing the Pre filter The pre filter can be changed from inside the unit 1 Loosen the 2 x M5 screws at the front edge of the head 2 Slide the clamping bar towards the front to release the egg crate pre filter support w Remove the pre filter and place in a plastic bag for disposal 4 Lay the pre filter on top of the egg crate and offer it up to the opening support the assembly and slide the clamping plate back towards the rear of the head secure the 2 x M5 retaining screws Main Carbon Filter To change the main filter 1 Remove the front plate by undoing the 2 x black thumb screws 2 Bring the handle on the filter clamp across the unit from right to left to loosen the clamping 3 Remove the old filter and place in a plastic bag ready for disposal 4 Slide the filter into the unit with the gasket down on the filter retaining frame Ensure the filter is properly located G Clamp the filter by moving the clamping bar from left to right into the unit 2 Replace the front cover S Re check the calibration of low airflow alarm and adjust as necessary refer to Appendix 2 Page 8 of 31 5 CONTROL PANEL DISPLAY BOARD FIG 3 lo 1 Low Airflow ON OFF Alarm Figure 3 Control Panel Display Board MAINS ON OFF Press the switch down to switch on A
25. ould not be placed too close lt 150 mm to the side or back panels It is not recommended that an open flame or heat source be positioned closer than 300 mm from the bottom of the filter bed A polypropylene spillage tray that has good chemical resistance can be supplied as an option It should be noted that filter blocks do not absorb carbon monoxide or hydrogen However small quantities Such as used in schools will not present a hazard because of the large dilution factor from the airflow through the fume cupboard and retardation of the chemical in the filter matrix Astec fume cupboards are designed to handle fumes and vapours given off during normal laboratory procedures These will be at the ppm level in the airstream entering the filter block It is NOT recommended that large quantities of solvents or acids should be boiled off in the fume cupboard Always keep a spare set of filters available High concentrations of fumes entering the filter block may temporarily reduce the filtration efficiency For this reason any major spillage within the fume cupboard should be cleared up immediately preferably using spillage absorption granules rather than tissue paper which may aggravate the evaporation of toxic fumes from the spillage area Following a major spillage the main filters must be changed as the heat of wetting may reduce filter efficiency After stabilisation the old filters can normally be re used provided saturation h
26. ow drops below 0 5 m s The pre filters will normally need to be changed more frequently than the main filters A blocked HEPA filter where fitted is also indicated by reduced airflow which is not restored after a pre filter change Manual Filter Saturation Detection 1 Select a suitable test chemical and matching Gastec sampling tube Examples include alcohols toluene trichloroethylene or any suitable chemical in routine use in the fume cupboard provided it is well adsorbed and is not dangerously toxic Page 10 of 31 Place 3 ml of chemical in a beaker on a hotplate Adjust the hotplate to boil off the chemical in about two minutes This gives a concentration of about 100 200 ppm to challenge the filter For testing ACI filters acid adsorbing use sulphur dioxide gas 902 at 1 bubbles per second through water Using the Gastec tube sample the outlet airstream from the unit following the instructions given with the Gastec tube one pump stroke for trichloroethylene eight pump strokes for sulphur dioxide for example The reading should be below the Occupational Exposure Limit see Section 10 Enter the result in a record book kept for this purpose This is mandatory under COSHH regulations If a significant level of chemical is noted in the exhaust air the main filter should be changed Page 11 of 31 7 MAINTENANCE IMPORTANT NOTICE Under the Control of Substances Hazardous to Health COSHH regulations effect
27. pane GP Dibromoethane GP Dichlorobenzene GP Dichlorodifluoro methane GP Dichlorodifluoro ethane GP Dichloroethylether GP Dichloromethane GP Dichloromonofluoro methane GP Dichloropropane GP Dichlorotetrfluoro ethane GP Ethyl bromide GP Ethyl chloride GP Ethylenechlorohydrin GP Ethylene dichloride GP Fluorotrichloro methane GP Freon BP gt 20 C GP Hydrogen bromide Hydrogen chloride ACI Hydrogen iodide ACI lodine GP lodoform GP Methyl bromide GP Methyl chloride GP Methyl chloroform GP Methylene chloride GP Monochlorobenzene GP Fluorotrichloro methane GP Page 18 of 31 Paradichlorobenzene GP Perchloroethylene Phosgene Propyl chloride Tetrachloroethane GP MIL GP GP Tetrachlorotheylene GP Vinyl chloride GP Sulphur Compounds Carbon disulphide Dimethyl sulphate Ethyl mercaptan Hydrogen sulphide GP GP SUL SUL Mercaptans high MW SUL Sulphur dioxide Sulphur trioxide Sulphuric acid ACI ACI ACI Tetrahydrothiapene GP Nitrogen Compounds Acetonitrile Ammonia Amines low MW Amines high MW Aniline Diethyl amine Diethyl aniline Dimethyl amine Ethyl amine Hydrogen cyanide Indole Nicotine Nitric acid fumes Nitrobenzene Nitroethane Nitrogen dioxide Nitroglycerine Nitromethane Nitropropane Nitrotoluene Pyridine Urea Uric acid Miscellaneous Adhesives Animal Odours Camphor Carbon monoxide Carbon dioxide Citrus fruits Cooking odours D
28. sibility for any other claims consequential including lost time or profit or other damage whether based in contract tort or otherwise not specifically stated in this Warranty f Except in respect of death or personal injury caused by Seller s negligence or as expressly provided in these Conditions Seller shall not be liable to Buyer by reason of any representation unless fraudulent or any implied warranty condition or other term or any duty at common law or under the express terms of the Contract for any loss of profit or any indirect special or consequential loss damage costs expenses or other claims whether caused by the negligence of Seller its servants or agents or otherwise which arise out of or in connection with the supply of the Goods or their use or resale by Buyer and the entire liability of Seller under or in connection with the Contract shall not exceed the price of the Goods Note When requesting a Warranty visit please have the following information available i Product model number and name Page 30 of 31 ii Serial number iii Date of last service and Service Company iv Nature of fault and any other comments likely to indicate cause of fault v A Purchase Order number to cover costs incurred if visit is outside the scope of the Warranty BIOQUELL UK Ltd or other nominated personnel will carry out warranty visits In the event of any health and safety incidents please advise
29. t Switch on The red indicator lamp will start to flash 3 If a malfunction is indicated by steps 1 or 2 then a pressure switch calibration procedure may be required Details are provided below Remember to remove the plastic bags from the pre filters before returning the unit to routine use CALIBRATION PROCEDURE The low airflow alarm operates using a differential pressure switch The pressure switch detects a high vacuum situation caused by a blocked pre filter The pressure switch is carefully calibrated before leaving our factory and in the majority of cases calibration will not be required The factory calibration is carried out using a standard GP filter at 240 220 or 110 Volts 50 or 60 Hz mains supply depending on the market area Standard Filtrete pre filter is used If the end user is known then the calibration will be performed using the correct main filter in place In some cases it may be necessary to recalibrate the pressure switch on site for the following reasons 1 A severe knock during transport 2 A change in the mains voltage or frequency 3 Use of a different main filter from the used during factory calibration The pressure switch is located behind the control panel The pressure switch is located in the electrical panel on the top right hand side of the head unit The filtration fume cupboard should be fitted with main filter and new Filtrete pre filter Switch on and wait 30 seconds to warm up
30. tilation equipment must be examined every 14 months b Other safety equipment must be examined at suitable intervals a Records of checks tests and repairs must be kept for 5 years Monitoring of exposure to hazardous substances must occur in accordance with a suitable procedure Records of results must be kept for 5 years for general monitoring and for 30 years when they relate to a specific employee Page 20 of 31 13 14 15 Regular medical checks are required when working with certain listed substances or where an identifiable disease is associated with a certain substance An employer must provide suitable instruction and training to employees regarding risks of substances and precautions to be taken Certain other regulations take precedence such as Control of Lead at Work Control of Asbestos at Work radioactive explosive or flammable regulations Mines and Quarries Act and medical treatment regulations Page 21 of 31 APPENDIX 2 CALIBRATION TESTING THE LOW AIRFLOW ALARM WARNING CALIBRATION OF THE PRESSURE SWITCH INVOLVES CONTACT WITH THE MAIN BOARD WHICH HAS ELECTRICAL CONTACTS AT MAINS VOLTAGE CARE SHOULD THEREFORE BE TAKEN WHEN CARRYING OUT THE CALIBRATION PROCEDURE 1 Ensure that new a pre filter is fitted in your filtration fume cupboard Switch on the unit indicator lamp should be out 2 Switch off the unit Remove the pre filter wrap in a plastic bag and replace flat in the filtration uni
31. unit with the gasket down on the filter retaining frame Ensure the filter is properly located 6 Clamp the filter by moving the clamping bar from left to right into the unit 7 Replace the front cover Pre filter The pre filter is located inside of the enclosure on the under side of the head 1 Loosen the 2 x M5 screws at the front edge of the head 2 Slide the clamping bar towards the front to release the egg crate pre filter support 3 Lay the pre filter on top of the egg crate and offer it up to the opening support the assembly and slide the clamping plate back towards the rear of the head secure the 2 x M5 retaining screws Page 5 of 31 oO OPERATING INSTRUCTIONS The fume cupboard may only be operated with the correct filter installed for the application Refer to sections 9 and 10 of this manual for further information If in doubt call Bioquell UK Ltd directly or contact your local dealer To start the unit switch the power switch on The fan will automatically run to give 0 5 m s Check the airflow and filter saturation if fitted on a regular basis Section 6 of this manual describes monitoring systems in greater detail and discusses COSHH requirements The face velocity at the working aperture and therefore containment of fumes is ata maximum with the front lower flap in the closed position The unit should be used in the closed position whenever practical A Bunsen burner or other heat source sh
32. us in writing at the earliest opportunity This warranty and all other contractual issues shall be governed by English law and the parties agree to submit to the nonexclusive jurisdiction of the courts of England Page 31 of 31
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