880c manual

Along with more than pages of illustrations, that guide the reader through each service, and maintenance procedure. Basic maintenance documentation periodically fixes errors or encounters for non-professionals, understand the principles of operation or life of your vehicle. Complete download comes in PDF format which can work under all PC based Windows operating system Mac, with a phone or tablet running android or ios operating system also.

Accurate, clear and concise text, combined with illustrations, make it possible for anyone with even a bit of basic mechanical knowledge to safely and easily service and repair their Case Crawler Excavator c Operators Manual pdf.

See information about book publishers CASE click here. Find the page about your job, print it off and get working on your Machine. No more ruining your expensive paper shop manual with grease and dirt.

Also, you can see the parts catalogs, service manuals, workshop manual, manual repair, and shop manual. Instant download means there is no shipping costs or waiting for a cd or paper manual to arrive in the mail. You will receive this manual today via instant download on completion of payment via our secure payment processor. This setting generates a read command at the completion of each reading. Press the predefined function key to begin the first reading. The meter will begin a new reading immediately after each previous reading is completed.

Readings may also be programmed to take place at specified intervals. Delete any existing entry in the Acknowledgment String field. Enter a time period in ms in the Interval field. Leave the Timer Action selection at Transmit String. This causes a series of read commands to be issued to the meter at the specified time intervals. The maximum interval between readings is 27 hours. Avoid selecting a time period which will issue read commands at a faster rate than the meter can execute them.

If the meter takes four seconds to complete a reading, and the interval is set to ms one second , then the meter will receive four read commands during the time it takes to execute one reading. The WinWedge software would issue hundreds of read commands in a few minutes, which may be far more than desired. The meter will store the extra read commands in a queue and continue to read until the queue is empty, which could take several minutes or longer.

If this occurs inadvertently and it is necessary to discontinue the readings, disconnect the RS cable from the meter and press the reset button on the back of the meter. Note that programming the Serial Output String is completely separate from programming WinWedge for processing an incoming data stream. This does not stop the WinWedge processing of incoming data, which will continue as long as there is data to process from read commands issued manually or from stored read commands in the meter queue.

If minimized during set-up, the WinWedge application bar will appear on the Windows Taskbar. The program may only be visible as a small icon in the system tray at the right of the Windows Taskbar. Right-click on the icon, then click on Open to maximize WinWedge again. This type of download is controlled with the meter keypad instead of the computer keyboard.

The resulting spreadsheet format will look very similar to the printed format. However, the data stream is downloaded through WinWedge as alphanumeric text and is all placed in the same field on the spreadsheet.

The data in alphanumeric fields can not be manipulated using the mathematical functions available in a spreadsheet. The meter is also more prone to locking up and experiencing other problems due to confusion between commands issued to the meter using the computer keyboard and commands issued to the meter using the meter keypad.

This printer equivalent download method is not recommended. The TemProbe sensor must also be used to obtain readings corrected for the changes in density caused by the temperature of the air being measured.

Pressing the ASSOC key while a pitot tube velocity reading is being displayed will display the temperature, absolute pressure and differential pressure associated with that pitot tube velocity reading.

Pressing the ASSOC key while a AirFoil probe or VelGrid velocity reading is being displayed will display the temperature and absolute pressure associated with that velocity reading. The AirData Multimeter default air density correction for flow and velocity readings is to local air density with reference to barometric pressure. Comparison with "hot wire" anemometer readings may require the correction of the "hot wire" readings to local density conditions.

See Section 6. Since the primary interest was in determining accurate volumetric air flow, obtaining accurate velocity measurements was not a priority. Only the repeatability of the velocity readings was considered to be important. The manufacturers of the various air movement devices developed what became known as Ak or "area correction factors". These Ak factors actually corrected for the variations in velocity reading for the different types of instruments being used to measure velocity.

It was necessary to develop different Ak factors for each type of test instrument used to test velocity, because each type is affected differently by the configuration of a given air movement device AMD.

Use of the terms Ak or area constant diverted attention from the fact that average face velocity readings taken with different instruments on the same AMD were not the same, nor were readings taken with the same instrument likely to be the same on two or more AMDs with identical areas, but with different configurations.

We continue to use Ak factors when calculating the air flow for very large diffusers and other special applications. The use of an Ak factor is not appropriate, however, in the measurement of face velocities, work zone velocities or in calculating air flow from velocity measurements at most air movement devices such as CleanRoom HEPA filters, chemical exhaust hoods, bio-safety cabinets, laminar flow work stations, coil and filter face velocities, kitchen exhaust hoods or any air movement device that affects velocity measuring instruments by its shape or configuration.

Various air measurement instruments will display differing readings when used on various AMD air movement devices, but the resulting calculated velocity or flow will be the same if the correct "k" factor is used for each particular instrument on that device.

This correction factor is not an area correction factor,"Ak" and never really was , but is actually a "Kv" velocity correction factor which must be applied to the velocity readings obtained with a specific instrument used in a specific manner on a specific AMD. The measured velocity multiplied by the correct "Kv" results in a corrected velocity reading that represents the true average face velocity relative to the gross active area.

Ideally, the manufacturers of the various air movement devices AMD will eventually develop and provide Kv correction factors and procedures to be used with each of their products and various velocity measurement instruments. In the meantime, Kv factors will have to be established through field testing of AMDs in the following manner. Determine the gross active area of the filter, coil, grille, opening or exhaust hood. Be sure to deduct the area of all obstructions to air passage such as support bands, T-bars, glue line and repaired areas on HEPA filters.

The total intake area of an exhaust hood includes all areas of air entry, including the space behind and around the sash, under the threshold, and through service openings. It is accepted practice to assume that the velocity through these additional areas is the same as that of the sash opening area.

Determine the "actual" volumetric air flow through the given AMD air movement device. Pitot tube duct traverse is likely the most reliable means of determining the actual air flow.

Direct air flow measurements can also be used in areas where duct air velocity measurements are not practical, by using the FlowHood with custom designed tops. Calculate the effective average face velocity fpm by dividing the actual air flow measured in Step 2 cfm by the gross active face area sq ft calculated in Step 1.

Document the procedure used to obtain the average face velocity including all factors such as: the instrument used, the sensing probe positions, spacing of the velocity sample points and the number of readings taken to obtain the average for each measurement location.

Always record the instrument type and any specific set up conditions such as whether readings were taken in local or standard air density, and whether or not the correction included temperature. Calculate the velocity correction factor "Kv" for this particular AMD by dividing the effective average velocity obtained in Step 3 above by the measured velocity obtained in Step 4 above.

This "Kv" factor should now be used routinely as a required multiplier to correct velocity readings taken at this specific AMD design, model and size. The specific procedures developed for measuring air velocities at a given AMD must always be used to obtain the air velocity measurements. This "demanding" five step procedure seems to leave little room for the "art" of Testing and Balancing. This is not altogether true. The measurement of the air velocity in Step 4 is affected by the position and orientation of the air velocity measuring probe.

By selective experimental positioning of the sampling point locations, a procedure can be developed which will result in a Kv for this particular AMD very near or equal to 1. The result is a documented, repeatable face velocity measurement that can be confirmed by a trained technician using the proper instrumentation and following the test procedure.

This procedure may also be used by laboratory personnel to retest the air flow at periodic intervals to confirm that the flow still conforms to test report data. A pitot tube is stainless steel with a 90 degree bend at one end and two connectors at a 90 degree angle located near the base.

The measurement range of the AirData Multimeter with the pitot tube is 25 to 30, fpm calibration accuracy is certified from 50 to 8, fpm. A "traverse" of the duct is obtained by taking multiple air velocity readings at equal area locations within the duct cross-section. All passages and connections must be dry, clean, and free of leaks, sharp bends and other obstructions. Use the retractile cord to connect the TemProbe to the meter. The shaft of the pitot tube is marked at one inch intervals to make it easier to control the location of the pitot tube within the duct.

Press the READ key to obtain the air velocity measurement. The accuracy of pitot tube results depends heavily upon uniformity of air flow and completeness of the duct traverse. Careful technique is critical to good results. Pitot tubes are available in several different sizes and configurations to simplify different applications which may be encountered.

When a pitot tube is used in internally insulated ducts, small particles of fiberglass may be dislodged and become caught in the openings of the tube. This will effect the accuracy of the readings and eventually clog the tube. Remove the connections to the meter and blow compressed air through the bottom of the inside tube to discharge fiberglass particles from the tip of the pitot tube.

It is common practice, although not a purely accurate procedure, to consider negative pitot tube readings as zero in the averages of pitot tube traverse readings. This zero will be calculated in the velocity sum and average, and will be recalled as nns NP 0. Air flow within a duct may be calculated by multiplying the average duct air velocity fpm as measured with the pitot tube, by the duct area sq ft.

The resultant flow is expressed in cubic feet per minute cfm. The standard pitot tube is. It is important to note that most publications assume that the pitot tube reading is expressed in velocity pressure, rather than velocity. This accessory amplifies the velocity pressure signal, giving greatly increased sensitivity at extremely low velocities. It is of particular value in small diameter ducts since, due to its smaller size and straight configuration, it does not require lateral rotation for insertion into the duct.

The AirFoil probe is also relatively tolerant of rotational misalignment. The measurement range of the AirFoil probe is 25 to 5, fpm. The AirFoil probe is useful for free point air velocity measurements, such as exhaust hood face velocities, HEPA filters or laminar hood velocities. A pitot tube senses total pressure at the tip and static pressure several inches behind the tip, and in many cases is not as suitable for point air velocity measurements.

The AirFoil probe is connected to the meter in a manner similar to the pitot tube. The probe tip should be held perpendicular to the direction of the air stream. NOTE: The AirFoil probe readings will be displayed with a negative sign if the hoses are connected backwards to the meter or to the probe.

The AirFoil probe lee side pressure connector should point downstream with the air flow. It is helpful to apply a single wrap of electrical tape around the probe shaft at each desired depth increment to mark measurement points. Negative air velocities may exist in some areas of a duct traverse due to turbulence or eddy currents.

The AirFoil probe tip is designed to provide equal differential pressure for velocity in either direction across the tip. Therefore, it is recommended that the negative velocity readings be included in the averages of the readings taken with the AirFoil probe.

This test is usually done at 6" centers on a 6" x 6" traverse pattern and at 8" or 10" above the work opening threshold. This is normally 9" to 11" above the work surface pan. Position the AirFoil probe horizontally and up against the bottom edge of the sash door.

Tape markers on the AirFoil probe and along the sash door edge at 6" centers will aid in accurate positioning of the AirFoil probe. Also the average of the downflow readings may be used to calculate the downflow cfm if required.

The work opening face velocity on total exhaust cabinets may be tested in a manner similar to procedures for fume exhaust hoods. The velocity sample grid should be a 4" square grid for 8" sash height and a 5" grid for 10" sash settings. When calculating average velocity or total flow, the "Kv" factor must be taken into account as discussed in Section 6. The exhaust filter face velocity may also be tested with the AirFoil probe to determine exhaust air flow. The cabinet manufacturer's probe position schedule should be used as a guide.

The AirFoil probe readings have been found to be essentially the same as "hotwire" anemometer readings taken in laboratory and field condition testing of filter discharge face velocity.

The 1' x 4' top assembly should be positioned so as to capture all of the intake air at the work opening. This may require the use of masking tape and materials to block off part of the opening, depending upon the size of the cabinet. Air flow at the extremely low velocities 50 to fpm used in chemical exhaust hoods and safety cabinets will show significant percentage variability at any given point slight fluctuations in velocity represent a very large percentage fluctuation at low velocities.

Readings should be repeated several times at each sampling point to obtain an average velocity reading for that point. The face of the exhaust hood should be divided into a grid with each section of the grid representing an equal area division of the exhaust hood.

The equal area divisions are often set at 6" x 6", and seldom need to be set at less than 4" x 4". Each velocity sampling location should be at the center of an equal area division of the grid. All equal area divisions should be tested. The leading edge of the AirFoil probe should be directly in line with the plane of the sash while taking face velocity sample measurements. The actual airstream direction is usually at various angles to the plane of the opening around the sash perimeter, so velocities cannot be reliably measured near the edge of the opening.

The tip of the AirFoil probe must be positioned at least 2 inches from the edge of the sash opening of the exhaust hoods. The standard AirFoil probe is a straight probe. It is often difficult to position the standard probe across an exhaust hood opening if the hood opening frame has some relief depth on the sides and at the threshold. Special pattern AirFoil probes are available that have the end of the probe at 90 degrees to the shaft.

These probes are more easily positioned in such hood openings and are designed to fit in the AirData Multimeter accessory kit carrying case. The average of several readings must be used to represent small sample areas, due to the variability of air flow at low velocities. The more variable the readings, the more readings must be included in the average obtained at each location. Ten readings per sample point is usually adequate. These conditions may include very small ductwork minimum size is four inches or other situations where it is very difficult to perform a full pitot tube traverse and it is not appropriate to use the FlowHood.

Position the pitot tube or AirFoil probe carefully in the center of the duct. Take five or more velocity readings and determine the average of the readings. Multiply the average of the readings by a factor of 0. Each reading represents 16 velocity points over a 14" x 14" area 1. The VelGrid unit is assembled by attaching the pushbutton handle to one of the captive knob screws of the handle bracket, and attaching one or more of the extension rods to the other end of the handle bracket as shown in Figure 6.

The VelGrid swivel bracket is attached to the extension rod end. The two hoses are connected to the VelGrid hose connectors and to the ports on the meter. The pushbutton handle cord plugs into the external read jack on the left side of the meter. A neckstrap is provided with the VelGrid to support the meter and allow hands free operation. The TemProbe must also be used as discussed if full density correction for temperature is required. Press the READ key to initiate the actual measurement.

Place the VelGrid directly on the face of the filter or coil, with the standoff spacers of the grid against the outlet or inlet face. When placing the VelGrid near the edges of the filter, grille, coil face, or other opening, the perimeter standoff spacers should be at least 1. This 1. Overlapping of reading positions is better than getting too close to the face area edges. If the dimensions of the outlet are smaller than the VelGrid, the orifices of the grid that are not directly exposed to the air flow must be covered with tape.

All unused orifice positions on both sides of the grid manifold must be covered. The VelGrid is bidirectional in function. A negative sign will be displayed if the hose connections are reversed or if the air flow direction is reversed in relation to the higher pressure side of the VelGrid.

If you know that the hoses are reversed, you may disregard the negative sign. When using the VelGrid for chemical exhaust hood readings, the sash opening must be set at a minimum opening of 14 inches in width for horizontal sliding sash, or 14 inches in height for vertically adjustable sash.

If the opening is less than 14 inches in width or length, the AirFoil probe should be used. The leading side the air strikes first surface of the VelGrid should be evenly aligned and parallel with the plane of the sash. Correct positioning of the VelGrid is easier if equal length, stiff wire "feelers" are taped to the leading surface of the VelGrid.

Coat hanger wire taped in place with plastic electrical tape works well for this purpose. It is important to position the leading edge of the VelGrid at 90 degrees to the direction of air flow when measuring work zone velocities. The VelGrid may also be positioned so the 1. The velocity average obtained in this manner can be used to calculate the volumetric air flow rate as described in Section 6.

Be sure to deduct the area of all obstructions to air passage through the device to be tested, such as: support bands; T-bars, including the perimeter glue line; and repaired areas of HEPA filters. Even with careful measurement of the active area, the meter and the sensing probe will be affected by different design configurations of the outlet, inlet, filter, coil or exhaust hood.

It is best to establish a procedure and confirm the air flow by pitot tube duct traverse or some other reliable flow measurement means for a given type of air movement device. The measurement of exhaust hood intake velocity requires careful placement of the VelGrid to align the leading edge of the grid directly in line with the plane of the sash opening.

Maintain the 1. The total intake area and air flow of an exhaust hood includes all areas of air entry, including the space behind and around the sash; under the threshold; and through service openings. See the following section regarding hot wire anemometer reading correction for true air velocity.

Mass flow represents the number of molecules of air flowing past a given point during a given time. Mass flow only represents true velocity when measured at standard sea level conditions of Hot wire, mass flow, "velocity" readings at density conditions other than standard must be corrected for local air density conditions if these results are to represent true velocity. Air velocity readings taken with the ADMC in the standard density mode are comparable to readings taken with a hot wire anemometer.

If local density corrected velocity readings taken with the AirData Multimeter are to be compared with hot wire anemometer readings, the actual air velocity should be measured in the local density mode with the AirData Multimeter, and the hot wire readings must be corrected for local air density conditions.

The manner in which a pitot tube is connected to the meter is critical to the type of differential pressure measurement obtained. Press the MODE key to toggle through the modes to differential pressure. Press the READ key to obtain the pressure measurement. Place the end of the tubing in one area and place the meter in the other.

The meter will measure the pressure differential between the two areas. These probes are brass colored and have a single tubing connection in the magnetic base. Leave the negative - port open to the room air. Point the tip of the static pressure probe directly into the airstream. The meter will read the differential between the pressure within the duct and the ambient pressure on the negative port of the meter. The resulting reading is recorded as velocity pressure.

The pitot tube connections are shown in Figure 6. If the connections are reversed, the readings will be negative. If the negative - connection perpendicular to the main shaft of the pitot tube is upstream and parallel to the duct, the point of the pitot tube should be facing directly into the airstream.

Insert the pitot tube into the airstream as discussed under Section 7. The resulting pressure differential is recorded as static pressure. The resulting differential pressure reading represents total pressure.

Absolute barometric pressure measurements are obtained when the negative - port is open to the atmosphere and the meter is in the absolute pressure mode. This precaution avoids excessive differential pressure input which will damage the pressure transducer. Maximum safe pressure is 60 psia common mode and 20 psi differential pressure.

The absolute pressure measuring accuracy should be checked periodically. The TemProbe may be plugged directly into the temperature input jack on the back of the meter. Since this receptacle is keyed, the plug of the TemProbe sensor must be correctly aligned for proper insertion. The release button on the side of the TemProbe must be pressed to disconnect the TemProbe from the meter.

Then, using the retractile cord if necessary, place the TemProbe sensor in the medium to be sampled. Press the READ key to take a temperature reading. The measurement range is NOTICE: The use of more than one temperature cable extender may reduce the meter reading by a non-linear degree depending on the combination of cable type, length and TemProbe temperature. This is due to the added resistance of the additional cable s.

The offset correction s must be determined by comparing readings taken with and without the extender cables at the temperature s to be measured. Each temperature reading may be entered into memory in two seconds or less. A full set of eight readings may be entered into memory in about 15 seconds. Plug the single cord on the bottom edge of the MultiTemp into the temperature input jack on the back of the AirData Multimeter.

Up to eight temperature probes each with a 12' cord can be connected into the eight small, numbered temperature input jacks on the top edge of the switch box. The jack numbers correspond to the eight switch position numbers surrounding the switch.

Place each of the temperature probes in the system as required and allow the probe temperatures to stabilize.

A typical system testing application is shown in Figure 8. Set the meter for the temperature function as discussed in Section 5. Set the MultiTemp for switch position 1 and take a reading for the probe connected to temperature input jack 1. Turn the switch to switch position 2 and take a reading for temperature jack 2. Continue for as many of the eight temperature jacks as needed.

The automatic reading function may be used with the MultiTemp. Set the meter for automatic readings and take as many readings as needed for any of the switch positions. Press the READ key to halt the reading process prior to changing switch positions. Changing switch positions during the actual reading process will cause false readings. Set the meter for the individual storage or automatic reading storage functions as needed.

Careful recording of which switch position readings are entered into memory under which sequence tag is essential to accurate recall of readings for performance calculations. Additional points may be measured in the same measurement sequence by using more than one MultiTemp switch unit connected in series piggybacking.

Reading and memory entry of 64 temperature points would take about two minutes after temperature probes have stabilized.

Connect the primary MultiTemp module to the meter as described above. Each switch position of the primary MultiTemp can support up to eight switch positions on a secondary MultiTemp.

These probes may be used in any liquid or gas compatible with stainless steel. Typical uses include: wet or dry bulb air temperatures; thermometer wells; "Pete's" plugs; or direct immersion. The surface probes may be used to measure pipeline surface temperatures when piping systems do not have thermometer wells. These probes may also be used as fast acting air probes.

NOTICE: The use of more than one MultiTemp and temperature cable extender set may reduce the meter reading by a non-linear degree depending on the combination of cable type, length and TemProbe temperature. This is due to the added resistance of the additional MultiTemp s and cable s. The offset correction s must be determined by comparing readings taken with and without the additional MultiTemps and extender cables at the temperature s to be measured.

The FlowHood unit captures and directs the air flow from an outlet, or inlet, across the highly sensitive flow sensing manifold within the FlowHood base. This manifold simultaneously senses the total pressure, and the static pressure, at sixteen precision orifices spaced at the correct representative measurement points for the known cross-sectional area of the FlowHood base.

The sensed total pressure and static pressure are combined to a single differential pressure, which is transmitted to the meter for conversion to direct air flow readout. The FlowHood is a much more convenient alternative to time consuming multiple velocity readings across air diffusers, as this instrument virtually eliminates the use of Ak factors, and the calculations necessary to convert the average velocity into air flow. Air flow readings taken using the AirData Multimeter are automatically corrected for the density effect due to barometric pressure.

If the temperature probe has been installed during the measurement, the air flow reading is further corrected for the density effect due to the temperature of the air stream, and the result is corrected for local air density. The flow will be calculated using this assumed standard temperature.

The degree of flow reduction is a function of the capture hood resistance combined with the outlet resistance for a given air flow. A duct velocity traverse is often used as a reference air delivery test, to determine the "average" backpressure compensation factor for a particular system.

This "average" correction factor does not specifically apply to each outlet, but only to the average outlet for that system. This method, commonly used in the air balance industry, may result in significant inherent errors, particularly in flow readings taken at low resistance outlets, and also on the larger, more efficient, low resistance, ducted or "extended plenum" types of air delivery systems.

The FlowHood air balance system is the only capture hood system which provides backpressure compensated air flow measurement. This previously unavailable capability allows the operator to determine the flow that is passing through an air terminal without the added pressure loss caused by the FlowHood System. The backpressure compensated flow value is obtained through a two part measurement performed at each duct terminal, using the flaps feature of the FlowHood unit. The backpressure compensated measurement is always performed following a required preliminary nonbackpressure compensated measurement taken with the flaps open.

Note the arrangement of the various items as you unpack the unit. Especially note the placement of the foam cushioning around the instrument, and the orientation of the meter face toward the side of the case.

The FlowHood should be packed in exactly the same manner whenever it is returned for recalibration. Save the foam packing and carton for this purpose. The base assembly and 2'x2' top assembly will arrive already assembled as a unit and packed as shown in Figure The handle assembly, accessory tops, and support dowels are enclosed in the built-in storage compartment at the rear of the carrying case.

The frame channels for the accessory top assemblies are stored at the bottom of the carrying case beneath the frame storage retainers as shown in Figure The top support assembly is stored in the top of the base assembly just above the grid. The legs have been folded upward, and the curved sections at the bottom of the legs have been inserted into the first and the third holes of the corner tubes of the base.

The head of the support assembly should be positioned toward the back of the base assembly. The four spring rods are positioned downward, so that they do not directly contact the flow sensing grid.

Foam packing, cloth skirts and accessories should not be stored on top of the grid. Custom top sizes are available upon request. The 2'x2' and 14"x14" top frames are assembled and stored as complete units.

The 2'x4', 1'x4', 1'x5', and 3'x3' frames use interchangeable parts to construct any of the four sizes. Refer to Figures Each frame corner section utilizes an eyelet and slot arrangement which selflocks into a similar eyelet and slot on the corresponding frame channel, when the two pieces are slid together. Side extension channels are joined together by a thumbnut and splice angle arrangement.

The individual frame pieces are stamped with a frame number, as shown circled below. This will help to avoid damage or loss. The desired top is attached to the matching frame assembly by pressing the corded hem of the top into the U-shaped retention channels on the outside of the frame assembly.

The seams of the fabric top must always be placed at the corners of both the frame and base assemblies. Position the top support assembly so that the spring rods are at the top. Swing the long rods around and down, into the position shown, and insert the ends of the rods into the center hole of the corner tubes of the FlowHood base.

The rod ends may be moved upward or downward as needed to control the tightness of the fabric top. The support dowels can now be slid over the ends of the spring rods. The location and correct combinations of frames, support dowels, dowel extenders and frame support cups to be used with each size are shown in Figures The 8. The 2'x2', 2'x4' and 1'x4' tops do not require dowel extenders. When using the 2'x2' frame, insert the support dowel end pins into each corner bracket of the 2'x2' frame assembly as shown in Figure The dowel end pins are inserted into the outer set of frame support cups when assembling a 1'x4' top and into the inner set when assembling a 2'x4' top as shown in Figures The 1'x5' top requires an 8.

The dowel end pins are to be inserted into the inner set of frame support cups as shown in Figure The 3'x3' top requires dowel extenders added to both the top and bottom of the support dowels. The dowel end pins are to be inserted into the frame corner brackets as shown in Figure Click to enlarge. Add to Wishlist. Product added! Browse Wishlist.

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