altec Alta Tecnología de Vanguardia S.A. de C.V.

Modular Control System MSC Series Instruction Manual MSC rev. 02 Apr 2003 Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 1

MSC Modular Control System Instruction Manual INDEX 1. Functions Page 2 2. Technical characteristics Page 3 3. Installation Gudlines Page 4 4. Preliminary checks Page 4 5. Electrical connections of the valves Page 4 6. Filtered pressure taps Page 5 7. Start up Page 7 7.2 Check of the connections Page 7 7.3 Operating in automatic or manual mode Page 8 7.4 Start up setting the parameters Page 8 8. Reading Delta-P Page 10 9. Shut-down cleaning Page 11 10. Signals & alarms Page 11 10.1.3 Display messages Page 11 11. Delta-P / valves button Page 13 12. Low pressure function Page 13 13. Remote function Page 13 14. Delta-P value playback (optional) Page 14 15. Hour counter Page 15 16. Troubleshooting Page 15 17. Fuse table Page 16 18. Factory settings Page 16 19. Legend Page 17 20. General assembly Page 18 N.B.: the numbers in square brackets [ ] relate to the positions shown in the drawings on page 18. CAUTION!: To ensure correct use of the product, please make sure that the installation is carried out by someone who has read the instruction manual carefully and has a competent working knowledge of the subjects discussed. Please keep the instruction manual for future reference. 1. FUNCTIONS The MSC completely controls MECAIR diaphragm valves on reverse pulse jet dust filters for pneumatic cleaning with either filter bags or cartridges. MSC is an innovative system which consists of two parts A master unit with a four figure display, 4 pulses for selection and data input and 7 LED indicators. Control valve units (slave) in modules of 10 outputs each up to a maximum of 200 outputs. This unit can be installed on the tank near the valves or alternatively inside the pilot valve enclosure box. The connection between master and slaves is made using a simple cable with three conductors and therefore does not need to be screened. The principal functions are: Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 2

Automatic regulation of cleaning, based on the level of filter clogging (ΔP). Mode function selection (MANUAL or AUTOMATIC). Automatic search of connected valves whilst jumping those valves not connected. Shut down cleaning with programmable number of cycles. Low pressure function (LP). Remote control (REMOTE). ΔP value playback (optional). 2. TECHNICAL CHARACTERISTICS Enclosure Protection rating Dimensions Weight Connections Temperature Power supply Number of slave that can be connected Supply output Power Contact relays Main fuse Pulse time Manual pause time Automatic pause time Positive ΔP range Negative ΔP range Number of cycles of Shut Down Cleaning External start of SDC Remote control Low pressure Hour counter Master and slave ABS grey Master IP54; Slave IP67 Master: 250 x 175 h 100 Slave: 230 x 140 h 95 Master: 1,95 Kg Slave: 1,10 Kg Slave PRV 3,40 Kg with nr. 10 PRV fitted Terminal blocks max. section 2,5 mm² Storage:-20 C/+80 C. Operation: -10 C/+50 C. 115-230 V (± 10%) 50/60 Hz Max. 10 in standard configuration Max. 20 in special configuration with special transformer Exclusively 24V DC 15W Max 20W Absorbed: max 35 VA with 10 slaves @ 230 V; max 70 VA with 20 slaves @ 230 V; Master: 2,5 VA Slave 10 : 1,5 VA 2 A 250 V AC 260 ma delayed for 230V power supply; 500 ma delayed for 115V 0,01 3,00 seconds 1 999 seconds 1 999 seconds 0.01 9.99 kpa - 0.01-0.50 kpa 0 99 times Activated by an external contact ( normally open) without power. Activated by remote control (normally closed) without power. Activated by an external contact ( normally open) without power. 0 999.999 hours Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 3

3. INSTALLATION SPECIFICATIONS! Do not expose the MSC to direct sunlight in order to avoid overheating of the circuit board. Connect MSC to a continually powered line to allow SHUT-DOWN CLEANING when the fan stops and to have maximum precision in the ΔP measurements. Protect MSC from rain, water infiltration and humidity.make sure that all cover screws are properly tightened in order to avoid any infiltration which can seriously damage the circuit board. The initial length of conduit which holds the electric cables which run to the MSC, should be turned upwards or interrupted before the appliance. This will stop any water or condensate entering the MSC. Avoid allowing cables to enter via the upper part of the MSC.. Avoid installing any electronic devices on vibrating structures Should you need to dispose of MSC, it should be treated as industrial waste. Do not burn in an incinerator as this may release toxic gases and condensers may explode! Do not attempt to repair MSC contact MECAIR! All wiring should be carried out by a qualified electrician to avoid risk of fire and electric shocks Prior to carrying out any cable maintenance, please ensure that the terminals are disconnected [17]. All electrical cables to and from the MSC should be isolated from other wiring 4. PRELIMINARY CHECKS 1) Check that MSC is not connected to power. 2) Make sure that the power supply indicated by the yellow sticker [12] is the same of the mains voltage. 5. ELECTRICAL CONNECTION 1) Check that the MSC is not connected to power before making any connections. 2) Unscrew and remove the cover of the slave unit. 3) Make sure that the valve connections are correct and isolated in respect from the ground. At this purpose, measure the isolation between ground and common with the connectors of the outlets disconnected. 4) Connect the valve cables to the terminals[26], between common (C) and the numbered outlet terminals. The coils of the electrovalves must be 24V DC 15W Max 20W. (attention! 24V DC is the only voltage available) Never connect common (C) or valve outlets to ground. The commons (C) are interconnected on the printed circuit board. One common can be used per valve or all the commons can be connected via one wire. 5) Power supply to the a) 230 V (Ground, L = phase, N = neutral) MSC [17]: b) Or 115 V from an auxiliary transformer (coils, remote switches, etc.). In this case replace the fuse for mains [16] with a 500 ma fuse, 6) The MSC power supply must be sectioned upstream the unit Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 4

6. FILTERED PRESSURE TAPS The ΔP inside the filter is measured by an internal sensor in the MSC which is connected to the filter via 2 filtered pressure taps. The filtered pressure taps stop process dust contaminating the tubes that attach the sensor to the filter. 6.1. INSTALLATION OF THE FILTER CONNECTIONS For depressurised filters install the product via the filter connections, one connection in the dirty side of the filter and one on the clean side. For pressurised filters, only install one connection on the dirty side. For each filter connection: 1) Drill 4 holes in the filter wall for the connection ( 3,75 mm., spacing between holes 39 mm.). 2) In the centre of the 4 holes, make 3-5 holes for pressure contained in a circle with a diameter of 1010 mm. The diameter of the holes should be 4 mm. (As an alternative to 3-5 fori, make a singular hole of a 20 mm diameter.). 3) Position the gasket. If the surface is uneven, cover it with plenty of silicon. 4) Check that the air passage is not obstructed 5) Position the filter connection making sure the connecting tubes are facing upwards 6) Fix the filter connection with self tapping screws( 4,25 mm.). 6.2. CONNECTING THE FILTERED PRESSURE TAPS Connect the tubes of the two filter connections using the pressure inlets [13]. The clean air tube should be connected to the - hole. The dirty air tube should be connected to the + hole. N.B.: Position the filter connection in such a way that it avoids build up of dust or condensation. The two connecting tubes ( 6/4) between the filter connections and the pressure inlets [13] must be lead upwards in the first part of their path. This will avoid eventual condensation present in the tube from entering. In humid processes, use a condensation outlet for each tube If the filter connections are correctly installed and connected to the two pressure tubes [13], the display [4] will show positive ΔP values. If negative ΔP values are shown, the connection of the two tubes have been wrongly attached. In this case swap the two tubes around. Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 5

6.3 FILTER CONNECTIONS Pressure holes Fori (3 5 presa pressione 4 mm.) in the centre to a diameter (3 5 Ø 4 of al centro, 20 mm, or one single hole entro of un Ø 20 di mm. 20 mm) Turn facing upwards Filter wall Gasket Ø 20 25 45 39 50 39 50 25 4 wall fixing holes Ø 3,75 Waddi Con superfici irregolari, For siliconare uneven surface, abbondantemente cover the ring with la silicon guarnizione before prima fixing di the parts together Self tapping screws Ø 4,25 Inlet + Inlet Fan Filtered air Dirty air inlet BAG FILTER MSC + Condensation outlets for humid processes Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 6

7. START UP altec Alta Tecnología de Vanguardia S.A. de C.V. 7.1. START UP: POWER SELECTION Check that the power supply to the MSC and terminals have been disconnected [17] Check: A) 1) That the value of the power supply matches that of the yellow sticker [12] under INGRESSO-IN, and also that of the available power supply. 2) Check that the coils of the valves are at 24V DC 15W Max 20W. (attention! 24V DC is the only available voltage) Selection of the power supply: 1) Open the cover. 2) Check that the power supply corresponds to the supply available. This can be selected by using the jumper[15]. 3) Close the cover and replace the screws. 7.2. CHECKING THE CONNECTIONS 7.2.1 CONNECTING THE VALVES Connect the valves to the slave units. In case of slave mounted on the tanks, cabling is made by MECAIR. 7.2.2 POWER & CONTROL UNIT CONNECTIONS Make the connection using a unscreened common cable with three conductors. Attention! Be sure to respect the numeration (1 with 1; 2 with 2; 3 with 3), wrong connections will seriously damage the unit. Do not connect to ground none of these wires Connect the master unit to the entrance (IN) of the first slave, from the exit (OUT) of the first slave to the entrance (IN) of the second slave and so on. Use the table below to decide how much cable you need. Number of control units Total distance allowed between the master and control boxes Up to 4 units Less than 30 metres 3 x 1 Up to 4 units Over30 metres (maximum 200 metres) 3 x 1.5 Up to 10 units Less than 30 metres 3 x 1.5 Up to 10 units More than 30 metres (maximum 200 metres) 3 x 2.5 Up to 15 units (maximum) Maximum 200 metres 3 x 2.5 7.2.4 INSERT THE NUMBER OF SLAVE CONNECTED Check that in the last slave the jumper [30] is closed. In all the other slaves the jumper [30] must be open. Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 7 Section of cable in mm² 7.2.3 SLAVE UNIT TEST On each slave unit it is possible to perform a quick test to check if the valves are working. At any time, when the Master unit is switched on, press down on the button [24] for about 5 seconds; the green LED [23]starts flashing. Select the valve to test by pressing and releasing the button [24], after selection (yellow LED [27]) keep button [24] pressed 2 seconds and release: the outlet is then energized. To exit the test mode press button [24] for more than 5 seconds.

Press SELECT MENU [1] until the display [4] will show I. Press the +/- [2]; the display [4] will show A (wait); press the +/- [2] button to insert the number of connected slaves. Press SELECT MENU [1] to go back to the valves control. 7.2.5 CHECKING FOR CONNECTED VALVES Press SELECT MENU [1] until the display [4] will show CCCC. Press the + [2] button, AAAA (wait) will appear on the display. On the control box, the display will show the letter C followed by XXY where XX is the number of control units and Y is the number of valves correctly connected. In case of discrepancy between the results expected and those obtained, check the connections. 7.3. OPERATING IN MANUAL OR AUTOMATIC MODE N.B.: select the shortest possible PULSE TIME of those which cause the maximum dust to detach from the filter bags. This is valid for both manual and automatic modes. For bag filters, the typical pulse time is between 100 and 400 ms. For filters with standard cartridges, it is between 500ms and 1 second. For filters with rotating nozzles, it varies between 1 and 4 seconds. 7.3.1 OPERATION IN MANUAL MODE In MANUAL mode MSC activates the valve with a fixed PAUSE TIME. Cleaning does not adapt to the level of dirt clogging the filter. Manual mode should be used only in start up phase. When MSC is working in MANUAL mode, the LED Auto/man [10] is off In MANUAL mode, the PAUSE TIME can be set by going to step 3 of the menu. 7.3.2 OPERATION IN AUTOMATIC MODE In AUTOMATIC mode, the level of cleaning adapts to the level of dirt in the filter. It begins when the ΔP of the filter passes the maximum entered value of ΔP and stops when the value reduces to under the the minimum entered value for ΔP min. These values depend on the construction characteristics and wear and tear of the filter and the type of process. When MSC is operating in AUTOMATIC mode, the LED Auto/man [10] is lit. In AUTOMATIC mode the PAUSE TIME can be set by going to step 4 of the menu. 7.4 START-UP SETTING THE PARAMETERS Connect the unit to the power. The MSC identification code will be displayed for a few seconds. This will change immediately to show the ΔP value of the filter. Choose MANUAL or AUTOMATIC mode by going to step 1 of the menu. In MANUAL mode the LED Auto/man [10] is off; in AUTOMATIC mode it is on. Attention! When the fan is off, the display [4] should indicate a ΔP value of 0 kpa in the filter. If this is not the case, use the automatic zeroing function. 1) Press SELECT MENU [1]: on the left hand side of the display [4], the number 1 will appear: With the +/ key [2] select MANUAL or AUTOMATIC mode; Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 8

0 =Manual 1 = Automatic 2) Press SELECT MENU [1]: The number 2 will appear on the left hand side of the display [4], With the +/ button [2]enter the PULSE TIME (0,01 3,00 sec). 3) Press SELECT MENU [1]: The number 3 will appear on the left hand side of the display[7]. With the +/ button [2]input the PAUSE TIME IN MANUAL (1 999 sec). This time will also be used for the PAUSE TIME in SHUT-DOWN CLEANING. 4) Press SELECT MENU [1]: The number 4 will appear on the left hand side of the display [4]. Enter the PAUSE TIME in AUTOMATIC using the +/ [2] button (1 999 sec). 5) Press SELECT MENU [1]: 5 will appear on the left hand side of the display [4]. Enter the ΔP Min using the +/ button [2] (0,01 9,99 kpa). 6) Press SELECT MENU [1]: The number 6 will appear on the left hand side of the display [4]. By using the +/ button [2], enter the ΔP Max value(0,01 9,99 kpa). Cleaning will begin once this value has been exceeded and stops again when it falls to below the ΔP Min value. 7) Press SELECT MENU [1]: 7 will appear on the left hand side of the display [4]. Use the +/ button [2] to enter the ΔP Alarm value (0,01 9,99 kpa). 8) Press SELECT MENU [1]: The number 8 will appear on the left hand side of the display [4]. Enter the NUMBER OF CYCLES OF SHUT-DOWN CLEANING using the con +/ [2] button.(0 99). (Enter 0 if you want to exclude shut down cleaning). 9) Press SELECT MENU [1]: The number 9 will appear on the left hand side of the display [4]. With the +/ key [2] select ΔP or external mode. 0= ΔP mode: SHUT-DOWN CLEANING activates automatically when the ΔP of the filter falls below 0,10 kpa. 1= external mode: SHUT-DOWN CLEANING activates when the external contact [19] is closed H) Press SELECT MENU [1]: H will appear on the left-hand side of the display [4]. Next to it will appear three numbers (0 to 999) out of 6 that indicate the MSC s total operating hours. E.g. if MSC has been working 12.270 hours, the display will show H12. h) Press SELECT MENU [1]: Letter h will appear on the left hand side of the display [4]. The last 3 numbers (from 0 to 999) out of 6 that show the total operating time of the MSC will appear next to it. Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 9

E.g. if the MSC has been operating for 12.270 hours, the display will show h270. I) Press SELECT MENU [1]: Press SELECT MENU [1]. The display [4] will show I. Press the + [2]; the display [4] will show A; press the +/- [2] button to insert the number of slaves. Press SELECT MENU [1]. The display [4] will show AAAA and a decrescent number, and then it will automatically go to CCCC. C) Press SELECT MENU [1]: CCCC (Check load) will appear on the display [4] Press the + key and AAAA (waiting) will appear on the display. For each module successively the following will appear: C XXY; XX = number of slave; Y = loads effectively connected to the slave(max 10) o) Press SELECT MENU [1]: the letters oooo (zero ΔP automatic) will appear on the display [4] Press the + [2] button so that a number will appear. Press SELECT MENU [1] and the MSC will start to work N.B.: Valves are activated starting from outlets n 1. The MSC leaves MECAIR with preset values for PULSE TIME, PAUSE, WORKING ΔP, ΔP ALARM, NUMBER OF CYCLES OF SHUT DOWN CLEANING (see chapter. 18). It is advisable to change the parameters of the MSC so that the filter can be cleaned with the lowest possible frequency. This will minimise dust emissions to atmosphere, limit filter usage and reduce the costs of compressed air Press DELTA-P VALVES [3] to return to execute from any step of SELECT MENU. To change the value of a parameter or to return immediately to execute: a) go into SELECT MENU until you reach the parameter that you would like to change b) type in the parameter value c) press SELECT MENU to memorise the data d) press ΔP-VALVES to return to execute. 8. READING DELTA-P 8.1 General Press the Delta-P/Valves key to move between the number of valves and ΔP or vice versa. If the value is always negative, swap the two cables of the filter connections. 8.2 Zero-ing the Delta-P reading Disconnect the two tubes. Press SELECT MENU [1]until oooo (automatic zero ΔP) appears on the display [4] Press the + [2] button so that a number will appear. Press SELECT MENU [1] the ΔP value and the initial cleaning cycle will be shown on the display [4] Attention! In order to guarantee a correct zero the unit must be switched on for at least 15 minutes. It is advisable not to go through the zero procedure until after this time. Reconnect the two tubes. Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 10

9. SHUT-DOWN CLEANING At every shut down, it is useful to perform one or more cycles of SHUT DOWN CLEANING to liberate any residual dust from the filter. Attention! MSC only performs SHUT DOWN CLEANING in Automatic Mode. To activate SHUT DOWN CLEANING: 1) Check that MSC is in AUTOMATIC mode 2) Select NUMBER OF CYCLES OF SHUT DOWN CLEANING (see 7.3). (Select 0 to exclude SHUT DOWN CLEANING ). 3) Select the start mode (see 7.3) 4) MSC uses the entered value for MANUAL PAUSE as the pause time in SHUT DOWN CLEANING.. 5) If has been selected 0 = ΔP mode: SHUT-DOWN CLEANING activates automatically when the ΔP of the filter falls below 0,10 kpa. If the ΔP of the filter goes over 0,10 kpa, cleaning is interrupted. If has been selected 1 = external mode: SHUT-DOWN CLEANING activates when the external contact [19]is closed SHUT-DOWN CLEANING stops when the external contact [19]is opened In both mode SHUT DOWN CLEANING does not begin with valve number 1, but completes the current cycle, counting it as the first cycle of SHUT DOWN CLEANING. The LED [6] is flashing during SHUT DOWN CLEANING. 6) When SHUT DOWN CLEANING is complete, the LED [6] remains still. 10. SIGNALS & ALARMS 10.1 SIGNALS Color LED Run [9]: Green Lights up when the unit is cleaning the bags LED Auto [10]: Yellow Lights up when the unit is operating in AUTOMATIC mode. Is off when the unit is functioning in MANUAL mode LED Shut Down Cleaning [6]: Green Lights up during SHUT DOWN CLEANING. The light flashes at the end of SHUT DOWN CLEANING. LED Stand-by [8]: Green Lights up when the unit is in stand-by LED Ok [11]: Green When the light is on, it indicates that the microprocessor is functioning properly. LED Alarm [7]: Red The light goes on when there is an alarm LED Communication The light goes off when there are anomalies in the connections link [5]: between the control and the power unit. Slave s LED LED power [23]: Green Lights up when the slave is supplied LED fire valve [25]: Red Lights up while valve is energised LED selected valve [27]: Yellow Lights up when the valve is selected Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 11

10.1.1 LED OK SIGNAL Eventual microprocessor failures will be indicated by the light LED OK [11] going out. This problem cannot be resolved by the customer, please contact MECAIR immediately. With reference to the terminal Alarm [7]. If the MSC is off, the relay contact is closed in N.C. When the MSC is powered up, the relay switches and the contacts close in N.O. 10.1.2 LED ALARM The LED ALARM [7] is lit when there are operating abnormalities. To solve them, follow the instructions given below: If the LED ALARM [7] is on, press the + [2] button. The following information will appear on the display: 10.1.3 DISPLAY MESSAGE Display Message E-XX 1) HHHH 2) cxx,y 3) nxx,y 4) L-XX 5) EPPP 6) E--- 7) Reason There is a discrepancy between the number of power units detected and those connected The ΔP value in the filter has risen above that entered. A valve has short circuited. XX is the number of slave unit, Y is the number of valves in the process. Power supply interrupted on one of the outlets. XX is the number of power supply units, Y is the number of outlet interrupted. The line is not responding correctly.. XX is the number of slave unit The ΔP value has risen above the positive scale above 9.99 kpa. The level has fallen below the negative scale for ΔP to less than - 0.50 kpa. Solution Check the connections between the units. Perform the power supply check go to menu 7.2 The slave unit with problem LED [23] fladhes. Remove the cause or alternatively change the value for the ΔP alarm go to section 7.4. Use - key to reset Remove the cause of the short Reset the unit with the - key. Remove the cause of the interruption. Reset the unit with the - key. Check the connections and eventually change the module. Return the ΔP of the filter to normal. Reset the unit with the - key. Return the ΔP of the filter to normal. Reset the unit with the - key. There are two other situations where messages appear on the display without pressing + Message Reason Solution LP 8) The low pressure contact is open LED alarm is on. Check if the jumper is missing or if the pressure gauge changes over, repair the Sb 9) The cleaning cycle has been stopped The remote contact is open, LED alarm is off The cleaning cycle has been stopped pressure in the circuit. Check if the jumper is missing or if the attached contact is open. Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 12

Refer to the ALL terminals [18]. If MSC is off, the relay contact will be closed in N.C. When the MSC is on, the relay switches and the contact closes in N.O. If the relay contact goes to N.C when the MSC is on, the LED ALARM [7] will light up. 11. DELTA-P / VALVES KEY The ΔP of the filter will be showing on the MSC display [4]. Press the DELTA-P/VALVES [3] button to switch between the level of ΔP in the filter and the number of valves waiting to pulse (and vice versa). When MSC is switched on, the ΔP in the filter will automatically be showing on the display. The type of pressure values showing can be: P X.XX where X.XX is the value in kpa of those values above zero.(max 9.99 kpa) - X.XX where X.XX is the value of kpa of those values below zero.(max -0.50 kpa) The indicator for the number of valves is: o XXY where XX is the number of the slave, Y is the number of valves waiting to pulse (max 8). Valves are identified in this way: 1 = 1, 2 = 2, 3 = 3, 4 = 4, 5 = 5, 6 = 6, 7 = 7, 8 = 8, 9 = 9, 10 = A 12. LOW PRESSURE FUNCTION It is possible to use this function to stop cleaning when there is low pressure in the tank. Connect the contacts of a calibrated pressure gauge to the inlet. To activate the Low Pressure function 1) Open the cover. 2) Connect the two low pressure terminals [19] (COM & L.P.) without power and normally open (NO) pressure gauge 3) Close cover 4) When the contact is closed on the two low pressure terminals [19] MSC will block stop the cleaning cycle and remain on stand-by, LP will appear on the display and the LED Alarm will be lit 5) When the two low pressure terminals are opened [27] MSC begins the cycle again. The LED Alarm goes out without having to perform a manual reset The chosen reading mode will be shown on the display [4] 13. REMOTE FUNCTION It is possible to use this remote function to stop the cleaning cycle at a distance. Attach the external contacts to the remote inlet. To activate the remote function: 1) Open the cover. 2) Remove the jumper and connect the two remote terminals [19] (COM & REM) to the contact without power when normally closed (NC). 3) When the 2 remote terminals are opened [19] MSC stops the cleaning cycle and remains on standby. Sb will appear on the display [4]. This command does not switch on the LED Alarm and the relay fall. 4) When the contact of the two remote terminals is closed [19] MSC restarts the cycle and the display [4] will show the chosen reading mode. Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 13

14. REMOTE TRANSMISSION OF THE ΔP VALUE (optional) It is possible to transmit the ΔP that is shown on the display of the MSC onto another instrument. It is connected to the 4 20 ma POS + [20] and the 4 20 ma NEG - terminals [20]. 14.1 4 20 ma TERMINAL CONNECTIONS ATTENTION! The 4 20 ma outlet is typically passive. It needs to be connected to an external power source! 1) Take out the removable terminal blocks from the terminals [1] e [2]. 2) Connect the positive (+) terminal of the remote unit to the 4 20 ma POS terminal[20] 3) Connect the negative ( ) terminal of a STABLE POWER SOURCE (5 30 V DC) to the 4 20 ma NEG terminal[20]. 4) Insert resistence on the connection between the negative ( ) terminal of the remote unit and the positive (+) terminal of the STABLE POWER SOURCE. If t he power supply is less than 15 VDC,do not insert any resistance. If the power supply is between 15 e 24V DC inclusive, insert a resistance of 470 Ω ½ W (*). If the power supply is above 24 V DC, insert a resistence of 1000 Ω 1 W (*). (*) This is only an indicative value! Perform practical tests to adapt this to a specific case! 5) Use a SCREENED CABLE to connect it. 6) Close the cover. Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 14

15. HOUR COUNTER HOUR COUNTER counts the number of hours MSC has been operating. The counter begins again each time the ΔP of the filter goes below 0,10 kpa. To see the HOUR COUNTER on the display [4]: 1) Press SELECT MENU [1] until H appears on the display [4]. Immediately next to it will appear the first three numbers (from 0 to 999) of the 6 numbers which indicate the total number of hours MSC has been operating. E.g..: if MSC has been operating 12'270 ore, the display will show H12. 2) Press SELECT MENU [1] until the display [4] reads h. Immediately next to it will appear the last three numbers (from 0 to 999) of the 6 numbers which indicate the total number of hours MSC has been operating. E.g..: if MSC has been operating 12'270 ore, the display will show h270. The total capacity of the HOUR COUNTER is 999.999 hours, after which the hour counter goes back to zero and starts again from the beginning. 16. TROUBLESHOOTING PROBLEM PROBABLE CAUSE SOLUTION The display and all the LED s are off. There is no power. One or more slave units are not recognized Interruption in the connection or fuse [22] burnt Connection between the MSC and the coils of the ignored Check connections Some valves are valves are wrong. ignored. The coils of the ignored valves are interrupted LED OK [11] is off. Microprocessor is broken. Contact MECAIR If EHHH appears on the display LED ALARM [7] is on. LP is indicated on the display Sb is indicated on the display when + is pressed [10], the ΔP in the filter has gone above the ΔP ALARM. If c or n followed by a number is desplayed after pressing button +, the valve is in short circuit or open. Low pressure input is closed Remote input is open. Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 15 Check the installation of the power terminals[17], the power supply selected [15] and the main fuse [16] (see fuse table) Check the cable connecting the slaves. Replace the fuses [22]. Check the continuity of the coils. Refer to chapter nr. 10. Refer to chapter nr. 10. Check the pressure of the header tank Check the jumper or the external contact

17. FUSES TABLE altec Alta Tecnología de Vanguardia S.A. de C.V. Master Size Value Type N on drawing Description 5 x 20 260 ma T [16] Mains fuse for 230 V (500 ma for 115V) 5 x 20 3,15 A T [14] Secondary transformer protection 5 x 20 3,15 A T [14] Secondary transformer protection Slave 5x20 1 A T [22] Electronic circuit and valves protection 5x20 315 ma T [31] Bus protection against wrong connection Attention! Is mandatory respect the table s value if needs to change a fuse 18. FACTORY SETTINGS Each MSC that leaves MECAIR has the following pre-settings Automatic Manual Selection: 0 Man ΔP Maximum 0.80 KPa Pulse Time 0,25 Sec ΔP Alarm 1.50 KPa Pause Time in Manual 10 Sec Shut down cleaning 3 Time Pause Time in Automatic 5 Sec Start S.D.C. selection 0 Delta-P ΔP Minimum 0.70 kpa If you would like to change the pre-settings, follow the instructions set down in 7.3. It is recommended that the filter is cleaned with the lowest possible frequency as this will minimise emissions to atmosphere and filter usage and reduce compressed air consumption. Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 16

19. LEGEND Master 1) Select menu button 2) + - buttons 3) Delta- P / Valves button 4) Display 5) Communication link LED 6) Shut down cleaning LED 7) Alarm LED 8) Stand-by LED 9) Run LED 10) Automatic / manual LED 11) Microprocessor OK LED 12) Yellow sticker 13) Pressure inlets 14) Secondary transformer protection fuses 15) Selection main voltage jumpers 16) Main fuse 17) Main terminal ( Line; Neutral; Ground) 18) ALL relay terminal and WD relay 19) Terminal for external input ( Common; Remote; Low pressure; External S.D.C. start) 20) 4 20 ma + - terminal 21) Connector for first slave connection Slave 22) Slave fuse 23) Green LED 24) Test button 25) Fire valve LED 26) Valves terminals 27) Valves LED 28) In bus connector 29) Out bus connector 30) Jumper (in the last slave this jumper has to be closed) 31) Fuse for bus protection! ATTENTION! Before opening MSC to work on it, please check that the terminals [17] are disconnected. Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 17

20. GENERAL ASSEMBLY Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 18

Paseo de los Álamos 47, Colinas de San Jerónimo. Monterrey, Nuevo León. México Pag. 19