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CERTIFICATION VAYUBODHAN UPKARAN PVT. LTD., certifies that this instrument was thoroughly tested and inspected and found to meet its published specifications when it was shipped from the factory.

WARRANTY AND ASSISTANCE All VAYUBODHAN UPKARAN PVT. LTD.S ENVIROTECH products are warranted against defects in materials and workmanship. This warranty applies for one year from date of delivery. We will repair or replace products which prove to be defective during the warranty period, provided they are returned to VAYUBODHAN. No other warranty is expressed or implied. We are not liable for consequential damages. No warranty is given for glass parts.

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CONTENTS 1. General Information ............................................................................... 4 1.1 Introduction ................................................................................... 4 1.3 Specifications ............................................................................. 6 2. Principle of Operation ............................................................................ 8 2.3 Measurement of Particulate Concentrations .............................. 8 2.4 Measurement of Gaseous Pollutants .......................................... 8 3. Installation ........................................................................................... 11 3.1 Installation of the APM 430 ........................................................... 11 3.6 Installation of the APM 411 ........................................................... 11 4. Operating Instructions ......................................................................... 14 4.1 Selection of Sampling Site .......................................................... 14 4.2 Selection of Filter Medium .......................................................... 14 4.3 Preparing the Filter ..................................................................... 14 4.4 Installing the Filter ...................................................................... 14 4.5 Operation of the Orifice Meter .................................................... 14 4.6 Timer operation .................................................................... 16 4.10 Using the Time Totalizer .............................................................. 17 4.12 Operation of the APM 411 Gaseous Sampling Attachment ....... 17 4.13 Sampler Start-up Sequence ...................................................... 18 4.14 Sampler Shut-off Sequence .................................................... 18 4.15 Calculations (For Suspended Particulate Sampling) ................. 18 5. Maintenance ........................................................................................ 20 5.1 Maintenance of Blower Assembly ................................................ 20 5.2 Maintenance of Manometer Assembly.......................................... 20 5.3 Maintenance of Gaskets and O-Rings ..................................... 20 6. Trouble-Shooting Guide ....................................................................... 21 7. Parts List ...................................................................... 22

8. Annexures 8.1 Annexure 1 Authorised Service Centres . 23

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Figures Title Drawing No. Page No. a. Schematic Diagram of APM 430 & 411....43005-00 .................... 7

b. Mounting of Gable Roof............................40024-00 ................... 9 c. Mounting of Gaseous Attachment........... 40025-00 .................... 12 d. Wiring Diagram for APM 430 Sampler..... 43015-00 .................... 15

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GENERAL INFORMATION Introduction 1.1 High Volume Samplers are the basic instruments used to monitor Ambient Air Quality and

Pollution. They are in widespread use all over the world to measure air pollution in industrial areas, urban areas, on the shop floor, near monuments and other sensitive areas. The High Volume Sampler is a vital tool for studies relating the impact of industrialization to the air environment, and for work relating diseases of the respiratory system to air pollution.

In these samplers, air-borne particulates are measured by passing air at a high flow-rate of

1.1 to 1.7 cubic meters per minute through a high efficiency filter paper which retains the particles. The instrument measures the volume of air sampled, while the amount of particulates collected is determined by measuring the change in weight of the filter paper as a consequence of the sampling. The passage for air reaching the filter is designed to prevent heavier settlable dust particles from reaching the filter. Hence High Volume Samplers measure concentration of Suspended Particulate Matter (SPM) in atmospheric air.

Often High Volume Samplers are also fitted with absorbers which would sample pollutants.

Here the air is passed through chemicals that would absorb specific gases, and the atmospheric concentration of gaseous pollutants is determined by chemical analysis of absorbing solutions.

1.2 ENVIROTECHS APM 430 Dwarf High Volume Sampler is an improved version of the APM

415 Sampler, and it performs all the functions of the APM 415 with greater precision and operational ease.

Main Additional Features 1. No need of keep track of carbon brushes thus eliminating unnecessary breakdowns and

minimize running cost. 2. Reduction in noise. 3. Size of main instrument has remain same as that of APM 415. 4. Less variation in flow. 5. Silicone tubing in place of PVC tubing. 6. Lighting facility to facilitate mounting in the absence of ambient light. Existing features which make the APM 430 superior to any other Indian High Volume

Sampler (including the ENVIROTECH APM 415) are:

Unique flow measuring system using an Orifice Plate incorporated in the Filter Holder casting ensures an exact measurement of the air passing through the filter, with minimum possibility of leakages, or extraneous air flows, affecting the flow readings.

Special hinge design allows easy separation of gable roof from the main housing making the system more rugged and compact for transportation.

The system has been simplified by making the main unit of the APM 430 essentially a particulate sampling system which alone needs the high flow rate. The gaseous sampling, which requires only a few LPM of air flow, is performed through an attachable subsidiary unit, the APM 411. Keeping the gaseous sampling module outside the main unit of the APM 430 has the advantages of : Easy manipulation of Impingers.

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No heating up of absorbing solutions due to heat from the blower. Possibility of using ice or cold water bath around the impingers for complete

absorption of sparsely soluble gases. Taking the impinger tray directly to the laboratory for safer transit of glass

parts.

Anodised Aluminium body end aluminium frame work to support various part of the sampler to withstand weathering effects.

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1.3 SPECIFICATIONS APM 430 Flow Rate : 1.1 to 1.7 Cu m/min >1.4 to 1.8 Cu m/min free flow without resistance. Particle Size : Down to 0.3 micron depending upon Filter used. Filter

holder designed to accept any standard Filter Sheet of 8" x 10" (20.3 x 25.4 cm) size.

Recommended Filter : GF/A for common use and EPM 2000 for Special

Research Use. Sampling Time Record : 0 to 99999.99 hrs. time totalizer records the running

time in hours. Automatic Sampling : 24 hour programmable timer to automatically shut off

or start the system after preset time intervals. Required intervals can be conveniently programmed. Power Requirements : 220 volts, 5 amps, single phase AC. Size and Weight : Length Width Height Weight (mm) mm) (mm) (Kg) APM 430, With gable roof 440 440 820 25 APM 411

Flow Rate : 0-3 lpm measured using plastic body flow meter with 2% FSD accuracy.

Sampling Train : Four inlet and one outlet manifold with built in Needle Valves for flow control of each inlet.

Absorbers : 4 Nos. of 35ml. Borosilicate glass impingers.

Size and Weight : Length Width Height Weight (Net) (apporx.) (mm) (mm) (mm) (Kg.) 240 125 360 2.5

List of Components APM 430: Heavy Duty Brushless Blower, Orifice flowmeter, Time Totalizer, Programmable Timer, Instrument Cabinet, Filter Holder Assembly, Detachable Gable Roof.

List of Components APM 411: Rotameter, Gas Manifold, Set of 4 impingers, Ice

Tray, Portable Cabinet. Optional Accessories : Folding Stand

Specifications subject to change without notice

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PRINCIPLE OF OPERATION 2.1 ENVIROTECH'S APM-430 High Volume Sampler is a basic instrument used primarily for

measuring concentration of suspended particulate matter in atmospheric air. By definition, suspended particulates are too small in size to have an appreciable falling velocity and are likely to remain in the atmosphere for significant periods of time. These particulates usually range from 1 micron to approximately 100 microns in size and may be caused by a variety of processes such as incomplete combustion of solid, liquid, or gaseous fuels, wastes from metallurgical, chemical and refining operations, iceneration, etc. Moreover, natural sources also contribute suspended materials like spores, salt water spray and pollens.

2.2 High Volume Sampling is an internationally accepted standard technique for monitoring the

concentration of suspended particulates. In these systems a large volume (1500 cubic meters) of atmospheric air is passed through a suitable filter medium over a period of upto 24 hours. They will thus yield measurable dust samples in areas with dust levels as low as one microgram per cubic meter of air. However, where dust concentrations are high, shorter sampling times may suffice.

Measurement of Particulate Concentrations 2.3 The mass concentration of suspended particulates in ambient air, expressed in micrograms

per cubic meter, is calculated by measuring the mass of collected particulates and the volume of air sampled.

In APM 430, the flow rate of air passing through the filter is monitored by measuring the

pressure drop across an Orifice Plate placed between the filter holder and the blower. The scale of the manometer used to measure the pressure drop is calibrated in air flow units of cubic meters per minute. A Time Totalizer records the time in minutes/hours for which the system has sampled air. Hence the volume of air sampled is known.

The mass of particulates collected is measured gravimetrically, using a balance capable of

reliable measurement to the nearest milligram. For identification of trace quantities of specific elements or compounds the collected dust

may be analysed using standard techniques like Electron Microscopes, Atomic-Absorption, Infra-red Spectroscope, etc.

One must remember, however, that particualte matter which is oily, such as wood smoke or

photochemical smog, may block the filter and cause a rapid decrease in air flow at a non-uniform rate. Even fog or high humidity can severely reduce the air flow through the filter since even though glass fibre filters are insensitive to changes in relative humidity, the collected particulates may be hygroscopic. Hence, it is recommended that filter mediums must be carefully conditioned, both before and after sampling, prior to the measurement of their weight.

Measurement of Gaseous Pollutants 2.4 The APM 430 Sampler is designed to monitor only the concentration of suspended

particulates in atmospheric air, and the APM 411 gaseous sampling attachment must be used if gaseous pollutants are also to be monitored. An attempt has been made to make the two units as independent of each other as possible. Hence, users who are not interested in gaseous pollutants need not acquire the APM 411 attachment. However, each APM 430 system is provided with all the fixtures needed for using the gaseous sampling attachment, so that the APM 411 system can be fitted at any stage.

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2.5 APM 411 gaseous sampler uses wet chemical methods for the absorption and detection of

gaseous pollutants. Hence, atmospheric air must be passed through absorbers containing suitable reagents which would absorb relevant gases like Sulphur dioxide, Nitrogen oxides, Hydrogen sulphides, etc. The absorbing reagents must be analysed in a laboratory to work out the quantity of gas absorbed.

The APM 411 system has been provided with a set of four midget impingers for gaseous

sampling. A gas manifold with separate flow control valves allows independent flow rates to be set in individual impingers. A flow-meter has been incorporated which allows a precise measurement of sampling rate when the system is being set up. The impingers have been kept in an ice-tray to improve the absorption efficiency of the system and prevent loss of absorbers by evaporation.

With a little care in the selection of chemicals, gas concentrations upto 5 micrograms/meter

cube of air can be routinely measured. Indeed, this wet chemical method is the reference standard recommended by leading bodies like the World Health Organisation and the American Environment Protection Agency (EPA).

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INSTALLATION

The APM 430 3.1 Unpack the packing case containing the High Volume Sampler after ensuring that the

instrument is UPRIGHT as per the markings on the carton. Check that all the items, as per the packing list, are undamaged. In case of damage, retain the packing case and inform VAYUBODHAN.

3.2 The APM 430 Sampler comes to you pre-wired and tested, ready to be used except for the

gable roof which is detached for safe transit. The roof is attached to the main unit by two hinges located near the top of the rear side. One portion of the hinge is mounted on the sampler while the other is bolted to the roof. The connecting pins are inserted in the

roof-portion of the hinges. To install the roof, unscrew the knurled screw from left side of pins. Hold the roof

from near the top of main unit as shown in Drg. No. 40024-00 and slide it to left so that pins slide inside the bore of rear portion of both hinges. Screw back the knurled screws from left side so that the roof may not come out.The roof is now installed. Check for free operation of the roof.

Whenever you transport the Sampler to the field, remove the roof assembly for safe and

easy transit. 3.3 Before connecting mains power to the equipment, check the following: (a) Switch is in its OFF position. 3.4 Connect Power to the instrument using the mains chord provided under the cabinet. The Left

side neon lamp will glow indicating that the system is connected to a 220 V.A.C. supply. If the neon lamp fails to glow even though the equipment is connected to a live mains outlet, follow trouble-shooting instructions (page 21).

The Blower will come on drawing air through the filter holder. If the system fails to operate,

follow trouble-shooting instructions on page 21. If the system has responded normally to all the controls described above, the APM 430 is ready for use.

The APM 411 3.6 Unpack the APM 411 Sampler. The ice-tray and the glass impingers are wrapped

separately, but would be placed inside the Sampler Cabinet. Check that the four 35 ml impingers supplied with the equipment are undamaged. Report damages to VAYUBODHAN immediately. After unpacking, the impingers should be placed in the ice tray.

As indicated in Drg No.40025-00 the APM 411 gaseous sampling attachment is to be

mounted on the right side of the APM 430 Sampler. To mount the APM 411 system, special bolts have been provided on the side of the High Volume Sampler, while suitable mounting holes have been made in the back plate of the APM 411. The nozzle in the middle of the mounting bolts provides the suction for gaseous sampling and should be connected to the common point of the gas manifold, as indicated in the schematic diagram of Drg No.43005-00.

The following procedure is to be adopted for installation of the APM 411 :

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Open the Brass nuts covering the mounting bolts. Position the Gas Sampler so that the picture hook-shaped mounting holes are in front of the

mounting bolts as shown in Drg. No. 40025-00. Allow the Gas Sampler to hang on the mounting Bolt heads. Cover the Bolt-heads with the Brass nuts provided to firmly lock the gaseous sampling

attachment in place. Connect the flexible pipe attached to the Gas manifold common point (outlet), to the suction

nozzle mounted on the APM 430 Sampler. Place the ice-tray with impingers in the gas sampler cabinet. The outlet pipe of each impinger must be connected to individual flow control valves of the

gas manifold. The system allows all four impingers to be connected in parallel form and to have independent flows. However, if required by the sampling scheme, a sampling train of two or more impingers in series could be formed by connecting the outlet of the first impinger to the inlet of the next one and the outlet of the last impinger to the flow control valve. To minimize handling of glassware, the flexible pipes must be connected to each impinger only after suitable reagents have been filled in them.

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OPERATING INSTRUCTIONS Selection of Sampling Site 4.1 The High Volume Sampler is usually operated at ground level. In normal usage it is never

operated more than 15 meters above ground level. In order to obtain a representative sample, the Sampler should not be positioned near a wall or other obstructions that would prevent free air flow. In excessively turbulent conditions or in the presence of strong surface winds or otherwise inclement weather, the sampling rate is likely to decrease rapidly and perhaps in a non-linear fashion due to filter choking. If the sampler is operating in the vicinity of a source, day-to-day variations in the measurement are expected due to varying meteorological conditions and changing atmospheric phenomena, like wind speed and direction, disperal, diffusion, etc.

Selection of Filter Medium 4.2 For most cases where interest is limited to a gravimetric determination of the total

suspended particulate concentration, glass microfibre filters having a low resistance to airflow, a low affinity for moisture and a 98% collection efficiency for particles of 0.5 micron or larger size are suitable. However, where further analysis of the particulates is to be attempted to detect specific elements/radicals, care should be taken to choose special filter mediums having a low background concentration of the substances of interest. For instance, special grades of glass microfibre filters are available which have a controlled and low concentration of metals like Iron, Zinc, Cadmium, Lead, Arsenic, Nickel, etc.

Preparing the Filter 4.3 Prior to use, expose each filter to a light source and inspect for pinholes, particles and other

imperfections. Filters with visible defects should not be used. A small brush is often used to remove stray particles adhering to the surface of new filters. Always handle filter papers from their edges and do not crease or fold the filter medium prior to use.

Both blank and samples should be conditioned at 20 to 25 degrees Centigrade, and relative

humidity below 50% for at least 16 hours prior to weighing.

It is usual to put an identification number and date of sampling on the filters. Weigh the filters to the nearest milligram and record the weight and filter identification number.

Installation of the Filter 4.4 Always install or remove the filter only when the Sampler is OFF. Open the gable roof of the

shelter, loosen the wing nuts and remove the face plate from the filter holder. Place a numbered, pre-weighed filter in position with its rough side up. Replace the face plate without disturbing the filter and fasten securely. Under tightening will allow air leakage, over tightening will damage the rubber face plate gasket. A very light application of talcum powder may be used on the rubber gasket to prevent the filter from sticking. Close the roof of the shelter.

Operation of the Orifice Meter

4.5 The Orifice meter is really a differential manometer used to measure the pressure drop across an Orifice Plate. It uses distilled water as the indicating fluid which must be topped up from time to time. The brass screw mounted on the meter plate is a filling plug which must be opened to fill in the manometer fluid. Use the syringe provided with the instrument to fill distilled water upto the zero mark on the meter scale. When adequate fluid has been filled into the system, close the filling plug. Do not over tighten the plug since it would damage its seal ring. A drain plug has been provided on left side of cover in order to drain out excessive water.

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4.6 TIMER OPERATION 4.7 SETTING UP THE TIMER FOR MANUAL OPERATION Pullout all the pins on the timing dial outwards. Use the main ON-OFF switch on the instrument panel / manometer plate to manually switch the blower ON or OFF. (Note : with the pins in outward positions, the timer remains connected to the mains but is unable to control operation of the Sampler.) 4.8 SETTING UP THE TIMER FOR AUTOMATIC OPERATION Pull outwards all the pins located on the timing wheel. Rotate the wheel clockwise until it is synchronized with the real time of the day. e.g. Rotate the timing wheel clock-wise until the number aligned to the pointer (marked as a triangle- ) on the center wheel corresponds to the real time of the day. For example, if the actual time is 10 A.M., the pointer should be aligned to number 10. Similarly, if the actual time is 3 P.M. the pointer should be aligned to number 15. At this position the timer is ON as in the manual position. Decide the OFF time and push all the pins on dial from selected OFF time to the start time inwards. This will switch off the blower at desired time. The sampler may now be left unattended and will automatically operate for the desired time. (Caution : The timing wheel provides and endless loop, and so the timer will repeat the operation after 24 hours, unless the sampler is externally switched off.) Each pins of the tuning dial corresponds to approximately 15 minutes. It enables to select many ON time and OFF time intervals as per requirement. 4.9 Caution : In case the timer function not to be use then pullout all the pins on the timing dial outwards.

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Using the Time Totalizer 4.10 The Time Totalizer uses a clock motor to drive a geared numerical display. As shown in Drg

No 43015-00, the system has been wired so that it operates only when the heavy duty blower receives power. Hence its display indicates the true time, in minutes/hours for which the Sampler has sampled atmospheric air.

The Time Totalizer performs two important functions : (a) it keeps check on the actual sampling time when the instrument is operated, and (b) it facilitates timely preventive maintenance. Time Totalizer readings must be noted before and after each air-sampling, so that the exact

duration of the sampling can be worked out. The same readings can be used to determine when the Orifice-meter system is due for cleaning. As such, we strongly recommend that Time-Totalizer readings be recorded in the form of a Log and used to establish a preventive maintenance schedule as per maintenance instructions given in section 5 of the manual.

4.11 In the event of power failure, both the Timer and Time Totalizer (as also the Sampler) stops.

Hence, when power is restored, the Sampler will continue to operate for the balance time period set on the Timer. It will, however, loose synchronicity with the real time of the day. The Time Totalizer will still indicate the actual number of hours and fraction of hours (i.e., ....x x.xx hrs) for which the Sampler has operated.

Operation of the APM 411 Gaseous Sampling Attachment 4.12 As described in Section 2.5, the APM 411 system uses wet chemical methods to absorb

various gaseous pollutants. Suitable absorbing solutions and analy|tical methods must be adopted as per recommendations of ISI (IS 5182) or the Pollution Control Boards.

Before operation of the system, check that it has been properly installed as per instructions

given in Section 3.6. Fill approximately 20 ml of absorbing reagent in each impinger as per the sampling plan

adopted. Place the impingers in the ice tray. We strongly recommend that cold water or crushed ice be placed around the impingers in the ice tray, so that a high absorption efficiency is maintained and evaporative losses of absorbers are minimised.

Place the loaded ice-tray in the APM 411 sampler. Connect the impinger outlet to individual inlets of the gas manifold. In case the sampling

plan requires some impingers in series, the corresponding manifold inlet would remain free. Follow start-up sequence given in Section 4.13 to get the Blower of the APM 430 ON. Connect the flexible pipe of the flowmeter to the inlet of the first impinger and adjust the flow

by rotating the corresponding manifold pin. A screw driver set is supplied with the instrument for this purpose. Rotation of the pin in the anti-clockwise direction will increase the flow, while a clockwise rotation will shut-off the valve.

Disconnect the flowmeter pipe from the first impinger and repeat the procedure until the

airflows have been set in all the impingers. Note down the Time-totalizer reading. At the time of Sampler shut-off, note the Time Totalizer reading again. The difference of

Time-Totalizer readings gives the gaseous sampling time, which must be multiplied with individual flow rates to determine the volume of air sampled in each impinger.

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Sampler Start-up Sequence 4.13 Before commencing any air sampling operations using the APM 430 High Volume Air

Sampler, check the following : (1) The system is suitably located as per section 4.1 (2) A fresh, pre-weighed filter is installed in the filter holder. (3) The fluid in the orifice meter is at Zero level. (4) In case both particulate and gaseous pollutants are to be sampled, check that

impingers with suitable reagents are in place and are connected as per Section 4.12. If only suspended particulates are to be sampled, the entire APM 411 gaseous sampling attachment can be removed.

Connect the mains chord of the sampler to a live 220 V.A.C. outlet. Switch on the machine. Allow the Blower to run for a minute so that it attains full speed and then record the sampling

rate indicated by the orifice meter. In case gases are also to be sampled, set the desired flowrates (for gaseous sampling) using the needle valves of the gas manifold. Record the sampling rates for gases.

Sampler Shut-off Sequence 4.14 (1) Record the flow-rate indicated by the orifice meter. (2) Record the flow-rate indicated by the rotameter (for gaseous sampling). (3) In case the system was operating under the control of the Timer and the blower has

already been shut off, restart the blower using the ON-OFF switch and allow the flow rate to stabilize for a minute before recording the flow rates mentioned above.

(4) Switch off the sampler using the MCB switch. (5) Record the final sampling time indicated by the Time Totalizer. (6) Open the filter-holder and carefully remove the FilterPaper. Fold the paper along its

length so that the soiled sides are in contact and are facing inwards. Store the filter paper in a clean envelope.

(7) Remove the Sampler from the Sampling Site to a safe storage area. Calculations (For Suspended Particulate Sampling) 4.15 Weight of suspended particulates (W) W = W2 - W1 (grams) W2 = Weight of the filter paper after sampling (grams) W1 = Weight of fresh filter paper (grams) Note: Both W2 and W1 are to be measured after filter conditioning as per Section 4.3 Volume of Air Sampled (V) V = Q x T (Cubic Meters) Q = Average sampling rate (Cubic meters per minute)

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T = Sampling Time (Minutes)

Q = (Q1 + Q2) / 2 Q1 = Initial sampling rate indicated by the Orifice Meter at the start of sampling Q2 = Final Sampling rate indicated by the Orifice Meter just before the end of sampling. Concentration of Supsended Particulate Matter= W/V(grms/cubic meter)

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MAINTENANCE Maintenance of Blower 5.1 Check belt of blower once in six month, if found loose kindly tighten it. Maintenance of the Manometer Assembly 5.2 The manometer assembly uses distilled water as a manometer fluid. With time the water

acquires residues and a precipitate forms which tends to clog the nozzles connecting the manometer tank to the manometer tube. To remove the precipitate and other deposits the manometer must be flushed out periodically (at least once in three months). If the instrument is expected to remain in disuse for two weeks or more it is recommended that the water be drained out from the manometer tank to avoid formation of the precipitate. To flush and clean the manometer assembly follow the steps given below:

a. Open the filling plug screw and drain plug screw. Take a silicone pipe and blow

into filling plug three four times. Hold the pipe from the glass tube pointing downwards and away from the instrument and blow into the pipe connected to the tank. The old water and residues will be drained out from the system.

b. Refill the manometer with fresh distilled water (through the filing plug) and drain it

as above. Repeat the process several times to thoroughly flush out any residues. c. Fill fresh distilled water prior to use of the instrument. Maintenance Of Gaskets and O-Rings 5.3 Once every year check for cracks and leaks in the various rubber gaskets and O-Rings. With

age, the silicone pipes and other rubber parts will tend to undergo plastic deformation and also become stiff. Change any pipes which have become loose at the ends. The face plate gasket of the filter holder needs replacement if the edge of the dust deposited after sampling is no longer sharp. This gasket is glued to the top plate of the filter holder but can be removed by applying some force on the rubber. New gaskets are availale as standard spares.

In brief follow the given instructions for avoiding unnecessary breakdowns. Before starting Check a. The timer has been set properly. b. The filter paper has been placed on the wire mesh. c. The water column is clean and is filled up upto zero mark. d. Top plate has been sufficiently tightened. e. Ice has been put in the ice tray (in case of APM 411 only). Do,s a. Change the manometer fluid regularly. b. Remove air bubbles from water column.

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TROUBLE - SHOOTING GUIDE The following is a list of typical faults that may be encountered in the use of the High Volume

Sampler. In case a fault persists after following the recommended remedies contact us. Symptom Possible Fault Remedial Action

Area 1. Machine is not working a) Mains Check for A/C supply. after switch on the b) Fuse Check for fuse ON/OFF switch. c) Mains Cord Check continuity of the mains cord. d) Timer Check the timer for ON position. 2. Neon Lamp does not a) Mains cord Check continuity of the mains cord. glow though sampler b) Neon Lamp Replace Neon Lamp. is connected to a live mains outlet. 3. Times of Timer and Time a) Timer Isolate the problem by checking the time with Totalizer do not tally a stop - watch. b) Time Since the Timer & TimeTotalizer use mains Totalizer operated clock motors, therefore If the mains

frequency is not 50Hz. or if it fluctuates, it will c) Mains cause timing errors.

4. Flow is less a) Manometer Check the manometer for any blockages. assembly 5. Blower is running but air a) Blower Belt Check the condition of the Blower Belt. is not suck through the b) Connecting Check for leakages etc. filter paper pipe/bend For APM 411 1. Flow meter does not a) Interconnec- Check for leakages in the silicon tube. show flow when connected ting piping to inlet of impinger having b) Flow meter Remove flowmeter by opening the screws on visible air bubble its float is stuck left side.

Open the brass nozzle on the top of the flow meter. Invert the meter and tap out the float. In extreme cases, a wire may have to be used to pry out the float. Take care not to loose the float.

Wash the flow tube using a mild soap solution. Never use an organic solvent to clean the plastic body of the flowmeter.

Dry the parts before assembly and apply a little silicone grease on rubber-seal rings.

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PARTS LIST FOR APM 430-411 Description Envirotech Qty.used

part No. APM 430 1. Blower Assembly for 430........................ 43010-01..................................... 1 2. Door Knob ............................................ 40111-11 ........................................ 1 3. Door Lock ........................................... 40111-13 ........................................ 1 4. Feed-Thru Nozzle ................................. 40317-01 ....................................... 1 5. Filter Adapter Casting for 430................ 43000-01 ....................................... 1 6. Filter Holder Bottom Plate ..................... 40220-01 ....................................... 1 7. Filter Holder Clamp Bolt Assembly........ 40222-01 ....................................... 4 8. Filter Holder gasket .............................. 40211-31 ....................................... 2 9. Filter Holder Top Plate ......................... 40221-01 ........................................ 1 10. Filter Holder Wing Nut .......................... 40222-52 ....................................... 4 11. Gable Roof Assembly ........................... 40112-01 ........................................ 1 12. Gable Roof Hinge Pins .......................... 40108-01 ....................................... 2 13. Roof Hinge Pin Knurling Screw (M3)..... 43008-52 ....................................... 2 14. Gable Roof Hinges ................................ 40109-01 ....................................... 2 15. Gable Roof Latch Assembly .................. 40112-12 ........................................ 1 16. Gas Sampler Mounting Screw ............... 40316-01 ........................................ 2 17. Mounting Screw Lock Nut (Brass).......... 40316-52 ....................................... 2 18. Gaseous Nozzle .................................... 40506-01 ...................................... 4 19. Handle (U Cover)..................................... 40115-11 ....................................... 1 20. Neon Light ............................................ 40116-31 ........................................ 3 21. O-Ring for Tank Inlet/Outlet Nozzles...... 40506-31......................................... 7 22. Orifice Meter Filling Plug / drain plug....... 40313-01 ....................................... 1 23. Filling Plug Screw .................................. 40313-02 ...................................... 1 24. O-Rings for Filling Plug Screw............... 40313-31 ........................................ 1 25. Orifice Meter Scale................................. 40301-01 ........................................ 1 26. Orifice Plate Gasket ............................... 40310-31 ........................................ 1 27. Tank Inlet/Outlet Nozzles........................ 40506-01........................................ 3 28. Time Totalizer Assembly ........................ 40011-01........................................ 1 29. Timer Assembly ..................................... 40008-01........................................ 1 30. ON/OFF Switch......................................................... ...................................... 1 31. Belt (Blower) ................................................................................................... .. 1 32. Connecting pipe / bend ............................ 43002-02 ........................................ 1 33. Silicone pipe ........................................... 43000-31......................................... A/R 34. Manometer tube for 430 ......................... 43002-01......................................... 1 35. Fuse Holder ................................................................................................... 1 36. Fuse 5A ......................................................................................................... 1 APM 411 1. Flow Meter ........................................... 40009-01 ...................................... 1 2. Gas Manifold Assembly........................... 40505-01 ....................................... 1 3. Gas Manifold Nozzle .............................. 40506-01 ....................................... 5 4. O-Ring for Manifold Nozzle...................... 40506-31 ....................................... 5 5. Gas Manifold Valve Pins.......................... 40505-02 ....................................... 4 6. O-Ring for manifold Valve Pin.................. 40505-31 ....................................... 8 7. Ice Tray .................................................... 40507-01 ....................................... 1 8. Ice Tray Strip (35ml)................................. 40508-01........................................ 1 9. Latch for Gas Sampler Cover.................. 40504-01......................................... 1

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A N N E X U R E 1 Authorised Service Centres of ENVIROTECH Products:

** North Zone **

*M/s. Vayubodhan Upkaran Pvt. Ltd. Phone : (011) 2681 0724 A - 292/1, Okhla Industrial Area, : 2681 1696 Phase-I, NEW DELHI - 110 020. Tele. Fax : (011) 2681 8959 E Mail : vayubodhan@vsnl.net

** East Zone ** M/s.Envirotech East Pvt. Ltd., Phone : (033) 2455 1128 97- c, Harish Mukherjee Road, Tele. Fax : (033) 2415 4488 Kolkata - 700026, WEST BENGAL. *Mr. C.B. Kar, LIG - 38, Ist Floor, Phone : (0674) 2561 039 Brit Colony, Naya Palli, Unit No. 8, Bhubaneswar - 751 012, ORISSA. *M/s. Pivotal Engineering, A-4, Aakruti Apartments, Phone : (0891) 2571 209 8-1-7, Balaji Nagar, : 2545 956 Visakhapatnam - 530 003, Tele. Fax : (0891) 2534619 ANDHRA PRADESH.

** South Zone **

*M/s. B.K. Rao & Associates, 10, 9th Avenue, Phone : (044) 2826 3560 Harrington Road Tele. Fax : (044) 2826 1371 Chetpet, Madras - 600 031 TAMILNADU. *M/s. Hyteck Scientifics Inc., UBAS - 410, Babu Khan Estate, Phone : (040) 2240 835 Basheer Bagh, Hyderabad - 500 001 : 2244 816 ANDHRA PRADESH. Tele. Fax : (040) 2404 7614 *M/s. Enviro Designs & Equipments, D-1, Aroma Gardens, Phone : (0484) 2402 907 Sivarama Menon Road, Tele. Fax : (0484) 2403 154 Lissie Jn., East of North Railway Station, Ernakulam - 682 018, KERALA. *M/s Amulya Associates, No. 421, Sreematha, 11th Cross, Phone : (080) 2660 5301 3rd Phase, Girinagar, : 2650 8670 Bangalore - 560 085, KARNATAKA.

** West Zone **

*M/s. Kishor Vyas & Associates, 20/231, Amar Apartment, Phone : (079) 2741 5044 Mirambica School Road, Naranpura, Ahmedabad - 380 013 GUJARAT.

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ANNEXURE 2

ADDRESSES OF DEALERS FOR MAJOR COMPONENTS AND CONSUMABLES FOR THE ENVIROTECH HIGH VOLUME SAMPLER APM 410-411 / 415-411

AUTHORISED AGENTS IN INDIA FOR WHATMAN PAPER LTD.

WESTERN INDIA Adinath Trading Co. Ajay Scientific Co. Desai Enterprises 36, Keshav Bagh 2A, Goving Building, 501, Ghorpade Peth 102/120, Princess Street, Ground Floor, Swargate, Pune 411 002 Bombay 400 002 140, Princess Street, Maharashtra Maharashtra Bombay 400 002 Maharashtra Durga Traders Jay Scientific Company Durga Traders 12, Embassy Market B/6, Umesh Kiran 18, Bhavana Farm Ashram Road 2nd Floor Rajpipla Road Ahmedabad 380 009 Bhagatsingh Road Ankleshwar 393 002 Gujarat Vile Parle (West) Gujarat Bombay 400 056 Maharashtra

EASTERN INDIA Amalgamated Suppliers Bhupendra Shah & Co. North East Chemicals Corpn. 6, Murlidhar Sen Lane 44, Ezra Street S.C. Goswami Road, Calcutta 700 013 P.O. Box 2654 Panbazar West Bengal Calcutta 700 001 Gauhati 781 001 West Bengal Assam Spiritco Kasliwal Brothers Kasliwal Brothers Harigopal Mazumdar Road 32, Jaora Compound R.D.A. Building, 2nd Floor Near Telephone Exchange Opp. M.Y. Hospital Opp. D.K. Hospital Dhanbad 826 001 Indore 452 001 Raipur 492 001 Bihar Madhya Pradesh Madhya Pradesh

NORTHERN INDIA B.M. Scientific Company J&K Scientific Agencies International Traders Gole Market Karan Nagar Vir Marg, (Shaheedi Chowk) Plot No. 7 Srinagar 190 010 Jammu 180 001 Basti Harphool Singh Jammu & Kashmir Jammu & Kashmir Sadar Thana Road Delhi 110 006 Gyan Scientific Traders Mukesh Enterprise The Scientific & General 5, Ashok Nagar Pannadhai Marg Agencies (Near Bansmandi Crossing) Outside Hathipole 106, M.G.D. Market Gautam Budh Marg Near Bhumi Vikas Bank Jaipur 302 002 Lucknow 226 019 Udaipur 313 001 Rajasthan Uttar Pradesh Rajasthan

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Laboratory Instruments & Laboratory Instruments & Oswal Scientific Stores Chemicals Chemicals Cross Road No. 5 235, Lower Bazar S.C.O. No. 4, Sector 16-D Grain Market Solan 173 212 Chandigarh Ambala Cantt. 133 001 Himachal Pradesh Haryana SOUTHERN INDIA Desai Chemical Company MehtaScientific Quality Traders Corporation 4-1-411, Abid Road 44, Perumal Mudali Street Narakathara Road Hyderabad 500 001 Sowcarpet Near Shenoys, Ernakulam Andhra Pradesh Madras 600 079 Cochin 682 035 Tamil Nadu Kerala Srinivasa Products The Madras Surgical No. 45, 5th N. Block Equipments Co. S.S.I. Area, Rajajinagar Anjuman Buildings (2nd Floor) Bangalore 560 010 18/21, Narasingapuram Street Karnataka Mount Road, Madras - 600 002