Operating Instructions Automatic/manual Mortar Mixer 39

Transcript

Automatic/Manual Mortar Mixer 39-0035 OPERATING INSTRUCTIONS Automatic/Manual Mortar Mixer 39-0035 ELE International Chartmoor Road, Chartwell Business Park Leighton Buzzard, Bedfordshire, LU7 4WG England phone: +44 (0) 1525 249200 fax: +44 (0) 1525 249249 email: [email protected] http://www.ele.com Distributor: ELE International Soiltest Product Division PO Box 389, Loveland, CO 80539 USA phone: +1 (800) 323 1242 fax: +1 (970) 663 9781 email: [email protected] http://www.eleusa.com ELE International, a division of Hach Lange Ltd. In the interests of improving and updating its equipment, ELE reserves the right to alter specifications to equipment at any time ELE International 2007  1 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 Contents Section Page Figure 1 General View 3 Figure 2 Front Panel Layout 4 Figure 3 Mixing Head Assembly Layout 5 1 Introduction 6 2 Safety 6 3 Specification 7 4 Mixing Programs 7 5 Installation 8 6 Controls, Features and Functions 9 6.1 6.2 6.3 7 General Front panel Mixing head Operation 7.1 7.2 7.3 7.4 7.5 10 Interruptions to the mixing programs Removing the mixing bowl Attaching the mixing bowl Removing and attaching the mixing paddle Mixing process 7.5.1 Automatic mode mixing 7.5.2 Manual mode mixing 7.5.3 The ‘NUDGE’ option 8 Adjusting the Mixing Paddle Clearance 11 9 Maintenance 12 Declaration of Conformity Certificate Noise Certificate WEEE Directive 2 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 3 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 Figure 2. 1 - Operation mode selection switch 2 - Start / Stop button 3 - Mains power switch 4 - Motor status indicator 5 - Sand dispenser status indicator (Open when on) 4 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 5 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 1 Introduction This machine is designed to mix mortars and cement pastes to the requirements of EN196 Parts 1 and 3 :2005. The mixing paddle has a planetary motion and is driven by a motor with a microprocessor based speed and program controller. In the automatic options, the machine mixes to pre-set mixing programs. In the manual option, the machine can be used as a simple to operate, two-speed mixer. A nudge option is also available to assist in getting the mixing beater into the correct position for checking the required gap between the mixing blade and bowl. An Automatic Sand Dispenser is available as an optional item. This attaches to the side of the mixer and feeds the sand to the mixing bowl through an automatic command from the program controller, depending on the program selected. A Burette Assembly is also available as an optional extra. This attaches to the side of the machine and allows the dispensing of pre-determined volumes of water for the requirements of EN196. Refer to the ELE catalogue or contact ELE or an authorised distributor for ordering details of the Automatic Sand Dispenser, 39-0051 series, and the Burette Assembly 39-0031/12. 2 Safety This equipment has been tested by ELE International and is safe to use providing that the proper safety precautions are observed: DANGER – misuse of this equipment may result in serious injury to personnel. Only use the equipment for its intended purpose, as described in this manual. Do not attempt to operate the equipment with covers removed. Only connect to the correct electrical supply, as stated on the rating plate. Refer to Installation section before installing machine. Do not operate machine with wet hands. Please read this entire manual before unpacking, setting up or operating this equipment. Pay attention to all danger and caution statements. Failure to do so could result in serious injury to the operator, or other personnel, or damage to the equipment. CAUTION – This equipment generates small levels of audible noise when in use. Ensure that it is installed in a location where operating noise will not cause disturbance to personnel in the area. 6 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 2.1 Symbols Green or Black PROTECTIVE CONDUCTOR TERMINAL Equipment safety earth point Green or Black Earth (ground) TERMINAL Not for safety earth purposes but provides an earth reference point. Background Yellow; symbol and outline – Black Caution, risk of electric shock Background Yellow; symbol and outline – Black Caution - refer to accompanying documents Black 2.2 Equipment conforms to the requirements of European CE Directives, as stated on the Declaration of Conformity Use of Hazardous Information DANGER : Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury. CAUTION : Indicates a potentially hazardous situation that may result in minor or moderate injury. Important Note : Information that requires special emphasis. Note : Information that supplements points in the main text. 3 Specification Speeds (rpm) Low (Manual Speed 1) High (Manual Speed 2) Overall dimensions Basic machine Machine with sand dispenser Bowl capacity Weight (mixer only) Motor rating Automatic Program 1 Automatic Program 2 Nudge Speed (10 RPM) Paddle Mixing Head Shaft 140 ± 5 62 ± 5 285 ± 10 125 ± 10 Length width height 530 mm 350 mm 580 mm 530 mm 390 mm 715 mm (approx.) 5 litres 54 kg 180 watts EN196 Part 1 : 2005 EN196 Part 3 : 2005 For positioning of beater to check beater gap 4 Mixing Programs 4.1 Program 1 : for mixing mortars to EN196 Part 1 : 2005. When selected and START button pressed :1 The mixer starts at low speed. 2 After 30 seconds from start, command sent to the output socket for the sand dispenser to open and allow sand into the bowl (if fitted). 3 After 60 seconds from start, the mixer changes to high speed. 7 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 4 After 90 seconds from start, the mixer stops. A slow pulsed tone can be heard during this period. This time is used to clean down the sides of the bowl. 5 After 170 seconds from start the pulsed tone increases in frequency to warn the operator of 10 seconds to motor start and program continuation. 6 After 180 seconds from start, the mixer starts at high speed. 7 After 240 seconds from start, the mixer stops. End of program. 4.2 Program 2 : for mixing cement pastes to EN 196 Part 3 : 2005. When selected and the START button pressed :1 The mixer starts at low speed. 2 After 90 seconds from start, the mixer stops. A slow pulsed tone can be heard during this period. 3 During the next 20 seconds the bowl must be removed and the cement paste scraped from the inside walls. (Note: After being stopped for 20 seconds the pulsed tone speeds up for 10 seconds to warn the operator to refit the bowl.) 4 After 120 seconds from start, the mixer will start at low speed and continue at this speed. 5 After 210 seconds from start, the mixer stops. End of program 5 Installation Select a strong and stable bench at approximately waist height for the best working position for the mixer with a convenient electrical power point. Installation of Sand dispenser EL39-0051/01 (optional) Firstly, remove the two small screws and plate fitted onto the slotted guard assembly on the left hand side of the mixer. Remove the 4 large screws from just above the area of the small plate removed previously. Place the sand dispenser unit EL39-0051/01 onto the left hand side of the mixer with the chute of the dispenser fitted inside the small aperture in the slotted guard assembly. Replace and tighten the 4 large screws, making sure that the slotted guard assembly is correctly located on the left hand side of the mixer. Plug the cable from the sand dispenser into the appropriate socket on the side of the mixer (Refer to figure 1, item 8). Finally, place the sand feeder hopper into the hole at the top of the sand dispenser. Caution : Care is needed when lifting the mixer into position as the unit is quite heavy. It is recommended for two people to lift the unit safely. Caution : Whilst the test is in operation, do not remove any covers or attempt to adjust any part of the machine. Electrical safety Danger : Before removing any covers or performing maintenance repair and service, isolate from electrical supply by removing mains plug. Where mains supply is required during these activities, only competent persons should perform the work. Check that the local power supply is compatible with the requirements stated on the label and connect in accordance with IEE regulations or to local requirements. 8 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 It is advised that this machine be connected via a residual current device (not supplied), and it should operate if earth leakage current exceeds 0.03 amps. The power cable is coded as follows: Brown wire Blue wire Green/yellow wire L N E Live or Power Neutral Earth or Ground Danger : exercise extreme caution when using the machine with wet hands. Dry hands before operating machine. Portable Appliance Tests (PAT) All ELE designed products are tested for electrical safety prior to sale. An electrical safety PAT label is fitted to the rear of the mixer. Should no label be found, please contact ELE Service Department quoting the serial number of the equipment. Organisations have an obligation to ensure equipment is maintained and is safe for use. Regular PAT testing is one means of ensuring equipment continues to be electrically safe. Important: do not connect PAT leads to sensitive components such as PCBs, control switches and the like. DO NOT FLASH TEST ELECTRONIC EQUIPMENT. If in doubt as to the most suitable connection point (which will usually be an earth stud or an external earth connection) contact ELE Service Department for assistance. 6 Controls, Features and Functions 6.1 General (Refer to figure 1) (1) Mixing head : utilises planetary gearing and transmits the drive from the motor to the mixing paddle. (2) Mixing paddle : screws onto the output spindle of the mixing head (Fig.3). (3) Mixing bowl : the flange has a notch which fits over a location spigot to ensure that the bowl is always fitted in the correct position and also prevents rotation of the bowl. (4) Bowl clamp : incorporates a spring loaded mechanism that holds the bowl in the correct working position. (5) Bowl clamp/release handle : used to operate the bowl clamp. NOTE! As a safety feature the mixer will not start unless the bowl is in its correct working position. (6) Upper locating lugs : these position the bowl centrally to the mixing head. Care is required to make sure the bowl is correctly located within the lugs before the locking handle is fully engaged. (7) Location spigot : provides initial support to the bowl prior to clamping, in addition to the functions described in the mixing bowl section (3). (8) Output socket : this is for connection to the automatic sand dispenser. (9) Audible warning device (inside mixer, not shown in figure 1) : this gives an audible warning during the stop intervals in the pre-set programs. 9 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 (10) Automatic Sand Dispenser : this is optional and feeds sand at the right time to the mixing bowl on command from the program. 6.2 6.3 Front panel (Refer to figure 2) (1) Option selection switch : for selecting the required mixing function. (2) Start/Stop Button : used to start and stop any of the mixer operations. (3) Power switch : for turning the machine on or off. Illuminates when the machine is turned on. (This switch also acts as a fuse device that can be reset by turning on again after tripping. If the switch keeps tripping out then contact ELE Service Department for assistance.) (4) Motor Status Light : This light will illuminate continuously when the motor is running. This light also flashes slowly when the mixer has stopped within a program cycle for bowl cleaning. The light will start to flash faster 10 seconds before the mixer program continues. (5) Sand Dispenser Status light : This light will illuminate when the sand dispenser is open during the Program 1 mixing cycle only. Mixing head (Refer to figure 3) (1) Planetary hub : rotates on the main drive shaft inside the planetary gear which drives the mixing paddle. (2) Mixing paddle shaft : provides the drive for the mixing paddle. (3) Spacer : these are added as necessary to give the required clearance between the mixing paddle and the bowl. (4) Locking ring : secures the spacers in position and provides a seating for the mixing paddle. (5) Mixing paddle : screws onto the mixing paddle shaft. Turn anticlockwise to remove. 7 Operation 7.1 Interruptions to the mixing programs The mixing programs will be terminated for any of the following reasons: 1 If the bowl is removed. 2 If the operator is late replacing the bowl after cleaning when the mixing head is about to restart (automatic modes). 3 Switching from any of the two automatic options while the mixer is running. A pre-set mixing program will always start at the beginning of its mixing cycle, even if restarted after a forced interruption. Note: During the pre-set mixing program there is a period when the mixing head is stationary. The bowl clamp can be lowered during this period without interrupting the mixing program, providing it is back in position before the mixing head is due to restart. The audible warning device and motor status indicator will beep and flash slowly during the stationary period and then beep and flash faster 10 seconds before the mixing head is due to restart. 7.2 Removing the mixing bowl Whilst supporting the mixing bowl by its handle with the left hand, lower the bowl clamp by pulling the bowl clamp/release handle downwards. 10 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 Lower the front of the bowl until the flange clears the side location lugs then withdraw the bowl away from the rear location lug (with the locating spigot). According to how much material is in the bowl, it may help to support the bowl with the right hand before extracting it from the location lugs. 7.3 Attaching the mixing bowl Always ensure that the handle of the mixing bowl is at the front of the machine. Whilst holding the bowl handle in the left hand and, if necessary, supporting the underside of the bowl with the right hand, insert the bowl into the location lug at the rear, ensuring that the locating spigot is engaged in the notch in the bowl flange. Lift the front of the bowl until the flange is inserted within the two front location lugs and then clamp into position by pushing the bowl clamp/release handle upwards until the bowl is locked into position. 7.4 Removing and attaching the mixing paddle With the POWER switch turned to O (OFF), the bowl removed and the bowl clamp lowered, the mixing paddle unscrews from its shaft by turning it in an anticlockwise direction. Attaching the paddle is a reverse of the above procedure. 7.5 Mixing process 7.5.1 Automatic mode mixing Turn the machine on with the POWER switch on the front panel. Select one of two automatic options available: (a) Mortar mixing to EN196 - 1 : 2005 (b) Cement paste mixing to EN196 - 3 : 2005 Press the start button to start the automatic mode selected. The machine will commence mixing to the required mixing program with the motor status indicator on continuously. The sand dispenser, if fitted, will automatically allow the sand into the bowl at the correct time (for mortar mixing only EN196 - 1 : 2005). Note: When the mixing head is at rest during the mixing program, the motor status light will flash intermittently at approximately a two second cycle and also the audible warning device will emit a pulsed sound. Ten seconds before the mixing head is due to restart, the motor status indicator and the audible warning device will increase to a faster rate up to the restart of the mixing program. 7.5.2 Manual mode mixing Turn the machine on with the POWER switch. Select one of the two manual speed options available, slow (1) or fast (2). Press the start button to start the manual mixing process - the motor status indicator will illuminate continuously. 7.5.3 The ‘Nudge’ option Select the nudge option. In this mode the mixing head will rotate at approximately 10 rpm whenever the START button is pressed and will stop revolving when the switch is released. This mode is used when checking the clearance between the mixing paddle and the bowl by inching the paddle into the correct position for measurement. 11 9901X0260 Issue 1 Automatic/Manual Mortar Mixer 39-0035 8 Adjusting the Mixing Paddle Clearance (Refer to figure 3) The clearance between the mixing paddle and the bowl may need adjusting after a period of extensive use. DANGER : Great care must be taken during this process. It is recommended that only a qualified person who is totally familiar with the process should be tasked with this procedure. It is essential that the mixing paddle shaft (2) is prevented from rotating when unscrewing or re-tightening the locking ring (4) or undue stresses will be imposed on the drive mechanism. Both the mixing paddle shaft and the locking ring have machined flats to accommodate a 22 mm spanner for this purpose. Using the slot openings in the guard to see the paddle position, use the nudge option described in section 7.5.3 of these instructions to move the mixing paddle to a position where the blade edge of the paddle is in its nearest position to the bowl side. Danger : Isolate the mixer from the mains electricity before any work commences. Now remove the guard assembly by first removing the sand dispenser, if fitted, and then loosen the two lower front panel screws and the front top cover screw on the right hand side. The guard can now be lowered and the micro switch unplugged from the socket. Assembly is a reversal of the procedure. Now measure the gap between the beater edge and the bowl side. If the gap is outside required standards then unscrew the locking ring (4). Add or remove the spacer (3) as required. Refit and re-tighten the locking ring (4). Refit the mixing paddle and guard assembly making sure the guard is correctly located and the screws are secure. 9 Maintenance Clean the mixing paddle and bowl as soon as possible after mixing to prevent a buildup of hardened mix material on these components. No other maintenance should be required. 9.1 Machines with sand dispenser fitted It is possible that a build-up of light sand dust may occur within the case of the sand dispenser unit. The quantity will be dependent upon usage. It is recommended that the dispenser be periodically inspected and, if necessary, stripped and any dust removed. Please contact either the ELE Service Department or an authorised distributor for details of available spare parts or servicing requirements. 12 9901X0260 Issue 1 DIRECTIVE ON WASTE ELECTRICAL & ELECTRONIC EQUIPMENT (WEEE)