ProFlow Module
Contents
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3. Secondary Grid Stainless Steel Wiper Wiper Retaining Strip Wiper Ski Figure 9 11 Retention System In order to maintain and clean the unit all items of the retention system can be easily dismantled Wipers and skis are inevitably prone to wear over prolonged use 300 micron titanium wipers are available where additional ProFlow system pressure transfer 1s required These are available for all transfer head sizes For ink adhesive printing mylar wipers are available for all transfer head sizes A specially designed transfer head maintenance stand is supplied with ProFlow to be used during cleaning and maintenance operations of the retention system Information on the removal and replacement of these items is detailed in the Consumable Replenishments Chapter of the User manual Technical Reference Manual 9 13 PROFLOW MODULE 265 MECHANICAL DETAIL Rechargeable Transfer Head 9 14 HORIZON The rechargeable transfer head option is fully compatible with the ProFlow hardware and offers the alternative of using ProFlow without changing the format new material is supplied in ie material not in ProFlow cassettes can still be used with ProFlow Elements of the rechargeable transfer head comprise e Conditioning Chamber single or dual chamber e Diaphragm Retainer e Diaphragm e Filling Ports 3 in number for 150mm transfer head e Retention System e Cover e Recharging Nozzl
4. e A positive seal between the transfer head and stencil eliminating leakage above the stencil e Improved gasketing effect to give the best possible seal between stencil and board The horizontal movement driven by the machine print carriage motor moves the unit across the stencil in a forward and reverse direction Y axis A print cycle may consist of a single movement in the Y axis forward or backwards Paste pressure pneumatic pressure either manually or software controlled is applied to the piston crosshead exerting a force onto the print material which in turn forces print material into the ProFlow conditioning chamber and into the stencil apertures As the unit moves across the stencil the trailing wiper within the transfer head lifts the print material from the screen surface creating a rolling movement of material within the conditioning chamber The volume of material under pressure from the piston crosshead 1s kept at a constant level within the chamber ProFlow Movement Y Axis Jo System Pressure ProFlow Pressure Mechanism Cassette Ptah Plunger Crosshead Cassette m Transfer Head Print Material f Stencil Primary Grid p a A i Secondary Grid Conditioning Chamber Wiper Board Figure 9 2 ProFlow Cr
5. ProFlow cassettes are supplied hermetically sealed with a tear off foil this is removed after the cassette has been fitted to the ProFlow transfer head If the cassette 1s being fitted to a new or cleaned transfer head ie where the transfer head conditioning chamber is free from print material The ProFlow unit should be primed as detailed in the Consumable Replenishments Chapter of the User manual before print operations are carried out When the cassette is fitted to the ProFlow unit the system is totally enclosed maintaining the print material in optimum condition If the system has not been used for some time a knead operation is available as detailed in the Sequences Knead Paste Section of this chapter A cover can be fitted to the underside of the transfer head during periods when the ProFlow unit is in the raised position or if the transfer head is removed Semco9 Cassette Ketaining Fin Recesses Cassette Shown with Sealing Strip Removed Figure 9 10 ProFlow Cassette Technical Reference Manual Chapter Issue 5 Jun O1 Retention System Maintenance Chapter Issue 5 Jun 01 PROFLOW MODULE HORIZON MECHANICAL DETAIL The retention system is sited on the underside of the transfer head and consists of e Secondary Grid stainless steel e Wipers 200 300 titanium coated step edged 2 positions e Skis vulcanised rubber 2 positions e Wiper Retaining Strips 2 positions
6. e Manual Mastic Gun e Pneumatic Gun optional NOTE When using a 500g cartridge an adaptor supplied is fitted between the cartridge and rear of the gun WARNING SOLDER PASTE AND SOLVENTS WHEN USING OR HANDLING ANY SOLDER PASTE OR SOLVENT FORMULATION THE MANUFACTURERS RECOMMEND SAFETY PRECAUTIONS MUST BE STRICTLY ADHERED TO Manual Mastic Gun The standard cartridge as listed above can be fitted to a general purpose mastic gun as shown in the Mastic Gun and Cartridge figure Figure 9 13 Mastic Gun and Cartridge NOTE For detailed procedures of print material filling refer to the Consumable Replen ishments Chapter of the User manual Chapter Issue 5 Jun O1 Technical Reference Manual 9 15 PROFLOW MODULE 265 MECHANICAL DETAIL HORIZON Pneumatic Gun The pneumatic gun is an optional accessory for the rechargeable transfer head The gun supplied with a holster is fitted to the machine and is pneumatically connected to the factory air supply The gun enables ready access and use for regular charging of the ProFlow unit Figure 9 14 Pneumatic Gun optional NOTE For detailed procedures of print material filling refer to the Consumable Replen ishments Chapter of the User manual 9 16 Technical Reference Manual Chapter Issue 5 Jun 01 Pneumatic Supply Manual Control Chapter Issue 5 Jun 01 PROFLOW MODULE HORIZON MECHANICAL DETAIL The pneumatic air suppl
7. a Lift off to be initiated are e The ProFlow unit is in a turnaround envelope not a shake off envelope or the stencil protection parameter in the board file is set to ON e No pressure is being applied to the paste system The turnaround envelope is where the printer has evaluated the position in which the ProFlow unit has come to rest and calculated that there is only enough room for the ProFlow unit to print back across the image or do a lift off The following sequence occurs when lift off 1s initiated 1 The message Has the ProFlow unit s base cover been fitted is dis played 2 Selecting Fit Cover the message Open the printer cover and fit the ProFlow unit s base cover is displayed enabling the base cover to be fitted while the ProFlow unit is at contact height 3 Selecting Yes The ProFlow unit is raised to the zero height position Print material changes it s characteristics viscosity through lack of use causing poor print quality To overcome this a knead paste sequence is available and is initiated by one of the following e The elapsed time since a board was printed has exceeded the value of the paste knead period parameter e When Knead Paste is selected e A print stroke is about to be applied and there is a deferred request for a paste knead e The amount of boards printed since the last paste knead equals the value of the knead before printing parameter only valid if the knead of
8. designed to move the ProFlow unit from the home position onto Raise ProFlow Shake off ProFlow 9 24 the stencil at contact height when one of the following occurs e When Run is selected e When Knead Paste is selected e When Prime ProFlow is selected e When Load Cassette is selected The following sequence occurs when ProFlow placement is initiated 1 The message Has the ProFlow unit s base cover been removed is displayed 2 Selecting Remove Cover the message Open the printer cover and remove the ProFlow unit s base cover is displayed enabling the base cover to be removed 3 Selecting Yes the message The ProFlow unit will be placed in the REAR envelope is displayed 4 Selecting Select Another enables the preferred envelope to be changed from rear to front 5 Selecting Proceed the ProFlow unit is placed in contact with the screen Following print operations ProFlow is raised from the stencil on initialization selecting Change ProFlow or selecting Change Screen or Change Tooling ProFlow is raised by one of the following methods Shake off ProFlow Lift off ProFlow Shake off is the preferred method of raising the ProFlow unit Lift off is only carried out if the ProFlow unit is not in a shake off envelope or the stencil protection parameter in the board file is set to ON The shake off envelope is the portion of stencil required by the ProFlow transfer head when
9. select Exit to return to Module Diagnostics Page 22 In the Module Diagnostics Page select ProFlow 23 Select Adjust on the Menu Bar 24 In the ProFlow Adjust Parameters select PFLOW CONTACT POS 25 At the Menu Bar select Incr or Decr to set the Contact Position to 5 5mm 26 Fit an empty transfer head to the ProFlow pressure mechanism Remove the cover NOTE Ensure wipers and skis are fitted to the transfer head 27 Position a 0 1mm shim on the stencil under the transfer head 28 In the Module Diagnostics Page select Drive System to Contact Height 29 Select Run Diagnost NOTE Correct contact height is when the shim is just held between the transfer head wipers and stencil At this position it is not possible to slide the shim sideways past the transfer head skis If correct contact height is not yet achieved carry out the following steps Technical Reference Manual 9 31 PROFLOW MODULE 265 ADJUSTMENTS AND SETTINGS OZ HORIZON 30 Select Adjust on the Menu Bar 31 In the ProFlow Adjust Parameters select PFLOW CONTACT POS 32 At the Menu Bar select Incr or Decr to increase or decrease the Contact Position set height by 0 5mm eg 5 0mm or 6 0mm NOTE Normally the contact position is between the range of 4mm 8mm nomi nally 6mm 33 Select Exit to return to Module Diagnostics Page 34 In the Module Diagnostics Page select Drive System to Contact Height 35 Select Run Diagnost 36
10. 01 REPLACEMENT PROCEDURES PROFLOW MODULE 265_ HORIZON 6 Position the ProFlow printhead mechanism locating dowels into the print carriage and secure the unit by means of the four captive screws using a 4mm Allen key see figure below Locating Dowels 2 Fositions z E ll Captive Screw 4 positions 7 Fit the following ProFlow mechanism comnectors figure below refers e ProFlow motor connector 9PL17 into 9 way socket 9SK17 e ProFlow home sensor connector 9PLOS into 6 way socket 9SK08 IYSKOS Home Sensor 99K17 ProFlow Motor ProFlow Printhead Mechanism ProFlow Fitted Socket Chapter Issue 5 Jun 01 Technical Reference Manual 9 37 PROFLOW MODULE REPLACEMENT PROCEDURES 265_ HORIZON A a a ProFlow Unit 1 Fitthe pressure mechanism part of the ProFlow unit to the ProFlow printhead mechanism bearing block by means of the two securing bolts Tighten using a 5mm Allen key NOTE Unit shown in unlatched position to identify bolts 2 Ensure that the locking clip on the pressure mechanism is pressed over to the right and clicks into place as shown in the figure below This ensures that the locking clip is in the correct position to secure the transfer head A Locking Clip 9 38 Technical Reference Manual Chapter Issue 5 Jun 01 Chapter Issue 5 Jun 01 PROFLOW MODULE HORIZON REPLACEM
11. Check if contact height is correct as detailed in NOTE above If adjust ment is still required repeat Steps 30 to 35 varying the set position until correct height is achieved 37 On completion of contact height set up select Home ProFlow on Module Diagnostics Page 38 Select Run Diagnost 39 Remove shim Remove empty transfer head if necessary Technical Reference Manual Chapter Issue 5 Jun O1 ADJUSTMENTS AND SETTINGS PROFLOW MODULE 265_ HORIZON Exhaust Flow Exhaust flow restrictors are fitted to ProFlow pressure mechanisms with the Restrictors manual pressure regulator option NOTE Exhaust flow restrictors are not fitted to ProFlow units with software controlled regulator option fitted Figure Software Controlled Pressure Mechanism of the Mechanical Details section refers The speed at which the pressure actuators force the piston crosshead onto the transfer head system is factory set to fully open This can be adjusted 1f the supply is too fast ProFlow pressure adjustment is either carried out manually on the unit or by optional software control Two needle valve adjusters on the exhaust flow restrictors are used to limit the force of movement and hence the speed of the piston crosshead in each direction Adjustment of the bottom valve R2 affects the downward motion of the piston fully open fastest movement If print material flow is found to be inadequate during a print cycle adjust valve R2 anti
12. ENT PROCEDURES 3 Locate and fit the ProFlow transfer head unit to the pressure mechanism by means of the two locating dowels Slide the unit onto the pressure mecha nism Once the unit is slid fully home it is secured by closing the locking clip 4 Lift the light shroud for access and plug the electrical connection ProFlow Fitted from the ProFlow unit into the socket sited on the right hand side of the ProFlow on the print carriage figure below refers CAUTION ELECTRICAL CONNECTION This electrical connection informs the machine of ProFlow fitment and must always be connected whilst the ProFlow unit is fitted otherwise damage may occur if machine is run Connect the curly pneumatic leads from the pressure mechanism to each respective left and right pneumatic connector sited either side of the ProFlow printhead mechanism figure below refers NOTE If the squeegee paste dispenser option is fitted to the print carriage before using ProFlow ensure that the paste dispenser regulator gauge reads 0 pressure Technical Reference Manual 9 39 PROFLOW MODULE 265 REPLACEMENT PROCEDURES Parameters 9 40 HORIZON 5 Connect the pneumatics and switch the machine to ON To ensure that the machine recognizes the ProFlow module the following indications on the machine MMI are evident a During the boot up sequence the operator is prompted to fit the ProFlow cover b The soft key that pre
13. Low Sensor Piston Crosshead Transfer Head e Conditioning Chamber single or dual chamber e Cassette Carrier or Rechargeable Unit Option Cassette optional e Retention System Configuration The following optional configurations of ProFlow are available for use on this machine Pressure Mechanism Two types of optional pressure mechanism are available e Manual controlled pressure settings e Software controlled pressure settings Cassette The ProFlow cassette is available in 300mm size only capacity approximately 800g 850g solder paste Transfer Head The table below lists the types of optional transfer head units and sizes available for use with ProFlow Transfer Head Sizes mm Transfer Head Type E 300 350 400 450 500 E A EC 0 Y E 0 20 000 000 Resse Gg raone AL NOTE All of the above cassette transfer heads are fitted with the standard 300mm cassette and 300mm piston crosshead A dedicated piston crosshead is required for each rechargeable transfer head size 9 2 Technical Reference Manual Chapter Issue 5 Jun O1 MODULE OVERVIEW PROFLOW MODULE 265_ HORIZON Operation Chapter Issue 5 Jun 01 ProFlow operates in the Y and Z axes horizontal and vertical planes The unit is raised and lowered to the screen by means of the special ProFlow printhead mechanism stepper motor A downward force 1s applied to the ProFlow transfer head directly onto the stencil which provides
14. OW MODULE HORIZON REPLACEMENT PROCEDURES To replace the ProFlow drive belt the printhead mechanism must first be removed from the print carriage carry out the following procedure l In Print Carriage Diagnostics select Drive Carriage to Front Position Power down the machine raise the machine covers Remove the ProFlow pressure mechanism and transfer head 3 Disconnect all plugs from the printhead mechanism to the connector panel on the print carriage Remove the printhead mechanism by unscrewing the four captive screws securing the unit to the print carriage Placing the unit on a secure surface slacken off the four screws securing the stepper motor to the support plate figure below refers 6 Remove the old drive belt Fit new belt in position 7 Using a cable tie wrap or similar provide a loop around the top of the motor body enabling the motor to be pulled using a force meter Ensure that the force meter is pulled in the direction which the drive belt is fitted figure below refers LA o ad 0 Z 3kgs 4kgs 0 Tension D 0 y 0000 lo i Force Meter Tie wrap Technical Reference Manual 9 41 PROFLOW MODULE 265 REPLACEMENT PROCEDURES HORIZON 8 Pull the force meter until a tension of 3 4kgs is monitored on the meter Tighten the four scr
15. PROFLOW MODULE HORIZON MODULE OVERVIEW CHAPTER 9 PROFLOW MODULE MODULE OVERVIEW Purpose The purpose of ProFlow is to apply printable material directly onto the stencil alleviating the need for squeegees and a paste dispenser This system is derived from the material transfer technology DirEKt Imaging The ProFlow system is an optional replacement to the squeegee and paste dispenser systems ProFlow is a self contained unit with the following advantages e Fally sealed unit keeping the printable material in optimum condition e Cassette option easily changed for replacement units e Rechargeable unit option e Retention system keeping stencil surfaces clean e Reduction in printable material wastage e Reduction in under screen cleaner paper and solvent usage Elements The main units of ProFlow comprise e ProFlow Printhead Mechanism ProFlow Pressure Mechanism ProFlow Transfer Head Figure 9 1 ProFlow Fitted to the Machine Chapter Issue 5 Jun 01 Technical Reference Manual 9 1 PROFLOW MODULE 265 MODULE OVERVIEW HORIZON The main components of each unit consist of the following Pressure Mechanism Pneumatic Actuators 2 positions e Pressure Regulator manually controlled or remotely mounted Software Controlled Air Regulator SCAR e Pressure Gauge manually controlled regulator option e Air Pilot Valve manually controlled regulator option e Cassette
16. Pressure Actuators ProFlow Pressure Mechanism Cover Removed M255K03 Software Controlled M25PLO2 Regulator M2DPLO1 M25 PWM to Analogue xi Converter View on Rear of Machine Cover Removed pe pe Y M25PL01 M25PL02 M25SK03 So TOTEM S le T2V 1 Supply O ON 5 IN A OV 4 100Hz O P 6 OV Figure 9 16 Software Controlled Pressure Mechanism Technical Reference Manual Chapter Issue 5 Jun 01 PROFLOW MODULE HORIZON DRIVES AND SENSORS DRIVES AND SENSORS Motor The system utilizes the ProFlow printhead mechanism motor and sensor for all vertical movement configurations ProFlow Mechanism Stepper Motor Raises and lowers the ProFlow to the required height Stepper Motor Drive Pulley Sa Stepper Motor Behind Attachment Plate ProFlow Home Sensor ProFlow Mechanism Figure 9 17 ProFlow Mechanism Motor and Sensor Location Chapter Issue 5 Jun 01 Technical Reference Manual 9 19 PROFLOW MODULE 265 DRIVES AND SENSORS HORIZON Sensors Test Point Functional Description Cassette Low Reed Switch MultiMove X12 IN6 Detects when the transfer head is low on paste empty ProFlow Home Microswitch Stepper Multiplexer Detects when the ProFlow unit has moved into the home position Sensor Unit Piston Crosshead Pre
17. ProFlow transfer head and replacement of the optional cassette is made by pulling the flush pull latch on the pressure mecha nism The pressure mechanism is swung on a hinge upwards and is held in the raised position by means of spring plungers locking into the hinge pin recesses Pressure Mechanism Elements Figure refers Access to the pressure regulator option is gained by removing the yellow pressure mechanism cover held in place by two retaining clips and two mag nets k k yn Froriow Transter Head Figure 9 5 Pressure Mechanism Raised for Access Chapter Issue 5 Jun 01 Technical Reference Manual 9 7 PROFLOW MODULE 265 MECHANICAL DETAIL HORIZON Cassette Transfer The function of the cassette transfer head option is to transfer print material from Head the cassette unit and onto a board as ProFlow moves across the stencil The cassette type transfer head comprises the following e Conditioning Chamber single or dual chamber Cassette Carrier Unit 300mm Cassette e Retention System see Retention System figure for detail Pressure Mechanis Locating Dowel and Holes Thumbscrew 2 positions Carrier Unit Clamp Bracket 2 positions Chassis Dowel Primary Grid removable Cassette Hinged Bracket Carrier Unit Conditioning Chamb eae Cover ProFlow Transfer Head Assembly with Cover Cassette Cassette Retaining Pin 2 positions Trans
18. SHOULD BE WORN BY SOLDER PASTE AND SOLVENT HANDLERS AT ALL TIMES TO ELIMINATE FUME INHALATION EYE CONTACT SKIN CONTACT AND INGESTION The following procedure should be carried out when print material wastage is excessive 1 Gain access to the ProFlow unit by opening the machine cover 2 Lift off the ProFlow pressure mechanism cover 3 Noting the present position of the sensor against the graduated marker loosen the sensor using a 1 5mm Allen key 4 With each graduation on the graduation scale being equivalent to approxi mately 43gms of print material move the sensor down by single graduations until the optimum print material usage position 1s obtained Cassette Low Sensor Figure refers 5 Carefully re tighten the sensor securing screw NOTE To prevent damage to the sensor do not overtighten grub screw 6 Replace the pressure mechanism cover 7 Close the machine cover Technical Reference Manual 9 29 PROFLOW MODULE 265 ADJUSTMENTS AND SETTINGS HORIZON NOTE 5 For ProFlow cassette option ensure that the cable of the sensor is configured to the top Rechargeable transfer head option sensor may be inverted cable to the bottom if paste low activation is required at mid way point ZO Cin raorao ettn a Bs Imm Graduation 44gms Print 4 ia E Material Usage Sensor Securing Screw Graduated Scale Imm increme
19. anism is to provide an adjustable Mechanism downward force pneumatic pressure onto the transfer head paste system This pressure paste pressure is set either manually or by software control depending upon pressure mechanism option fitted refer to Pneumatic Supply paragraph of this section and Adjustments and Settings Section of this chapter for further information Details of the pressure mechanism elements are listed in the Pressure Mecha nism Elements Figure and table below Spring Plunger Hinge Recess 2 Fositions 2 Fositions 7 D m uf a E Er pa e va FM ct E EJH 7 E i E i 4 n Figure 9 4 Pressure Mechanism Elements cover removed Description Pressure Regulator manual option only Pressure Gauge manual option only Air Pilot Valve manual option only e ros IC 9 6 Technical Reference Manual Chapter Issue 5 Jun 01 MECHANICAL DETAIL PROFLOW MODULE 265_ HORIZON The ProFlow pressure mechanism is fitted to the printhead drive mechanism bearing block by the two securing bolts Figure Pressure Mechanism Raised for Access below refers NOTE Prior to fitting the ProFlow unit to the machine ensure that the correct Pro Flow printhead mechanism is fitted to the print carriage refer to Replacement Procedures Section of this chapter for further details Access for the fitting of the
20. clockwise until the correct flow is achieved If print material flow remains low with the valve fully open adjust the pressure regulator Pneumatic Supply Section of this chapter refers NOTE Print material seepage may occur if the material supply is too fast Adjustment of the top valve R1 affects the upward motion of the piston fully open fastest movement Needle Yale dl 3 pi pl dra le Pit LEFT Pa x Pas lai Needle Valve A oie a Ad LE Fa Ps Pressure Mechanism Left hand Side with Cover Removed Figure 9 25 Exhaust Flow Restrictors Chapter Issue 5 Jun 01 Technical Reference Manual 9 33 PROFLOW MODULE 265 ADJUSTMENTS AND SETTINGS Software Pressure Adjustment Paste Pressure Idle Pressure No Pressure ProFlow Manual Regulator 9 34 HORIZON The software controlled regulator option can be instructed to supply and main tain pneumatic pressure to the piston crosshead within the range of 0 2 bar to 4 bar or no pressure at all Software controlled piston pressure has three settings o Paste Pressure Idle Pressure No Pressure NOTE If the machine does not detect a software controlled regulator manual adjusta ble pressure mechanism option fitted pressure on the system is either on or off rather than being set to paste pressure and idle pressure This is the set operating pressure whilst the ProFlow unit is either in the knead or printing mode and
21. es 2 in number Diaphragm Ketainer Diaphragm Filling Fort Bayonet Cap Filling Fort Bayonet Cap Filling Fort Recharging Nozzles Bayonet Cap Xe Ke Transfer Head Showing Diaphragm 5 gt Figure 9 12 Rechargeable Transfer Head The rechargeable transfer head is constructed in much the same way as the cassette transfer head The main difference being that a diaphragm held in position by a diaphragm retainer replaces the cassette The transfer head is also fitted to the pressure mechanism unit in the same way as the cassette transfer head unit Cassette Transfer Head Section of this chapter refers Print material is initially filled into the paste chamber through the stainless steel grid of the retention system General recharging is performed by using the 3 filling ports sited on the front side of the transfer head The filling ports are sealed using bayonet connector caps NOTE For detailed procedures of print material filling refer to the Consumable Replen ishments Chapter of the User manual Technical Reference Manual Chapter Issue 5 Jun 01 MECHANICAL DETAIL PROFLOW MODULE 265_ HORIZON Recharging Recharging the rechargeable transfer head is carried out using the following standard cartridge e Semco type 500g or 1kg sizes NOTE Maximum cartridge diameter should not exceed 43 6mm These cartridges are utilized by using either of the following
22. ews whilst the motor is under tension 9 On completion re fit the printhead mechanism to the print carriage and re connect all leads to the print carriage connector plate 10 Re fit ProFlow pressure mechanism and transfer head to printhead mecha nism 9 42 Technical Reference Manual Chapter Issue 5 Jun 01 FAULT FINDING PROFLOW MODULE 265_ lt HORIZON FAULT FINDING Symptom Possible Causes Possible Solutions Leakage between the skis and wipers Pneumatic paste pressure set too high reduce paste pressure or increase speed Check settings mechanical security Incorrect contact position Try alternative set up method Old issue wipers or skis fitted Ensure that the latest hardware is fitted Stencil or wiper damage Foreign matter between the board and Ensure boards are clean and flat when stencil entering the machine First side components not seating in the Check tooling nest first side place tool nest correctly ment Metal edge wipers not being used Ensure the latest ProFlow hardware is fitted Stencil design not suitable for use with Large apertures need support bars top ProFlow side of laser cut stencils must be smooth Imaging speed too high Reduce print carriage speed Bowed boards entering the machine Ensure the quality of raw materials not being flattened by clamping pres conforms to specification Bowing less sure than 1 of diagonal dimension of board Unsuppo
23. f image parameter is set to enabled When a paste knead sequence is initiated the message Automatic paste knead activated is displayed Two types of knead operation may be carried out a Knead off image b Knead over a board Technical Reference Manual 9 25 PROFLOW MODULE 265 SEQUENCES HORIZON Knead Off Image This operation is carried out off the stencil image when the knead off image parameter is set to enabled and the ProFlow unit is in a shake off envelope If the ProFlow unit is not in a shake off envelope the paste knead is deferred until it is NOTE A knead off image can not be carried out if stencil protection is selected to ON in the board file 1 If a board is not already in place the board clamps close and the board rails are raised to print height for a board thickness of Umm 2 ProFlow is lowered to print height as set by ProFlow knead pressure and ProFlow paste pressure is applied to the system 3 The print carriage moves away from the stencil image at either the front or rear knead speed The message Performing knead off image is displayed 4 The unit is moved in the reverse direction and back again 5 This sequence is repeated for the number of times set by the current value of the knead deposits parameter 6 Upon completion ProFlow paste pressure piston pressure is changed to ProFlow idle pressure and ProFlow raises to the contact height position Knead Ove
24. fer Head Assembly Opened for Access 9 8 Figure 9 6 ProFlow Transfer Head Technical Reference Manual Chapter Issue 5 Jun O1 MECHANICAL DETAIL PROFLOW MODULE 265_ HORIZON The transfer head is removable from the pressure mechanism unit Two locating dowels are used to slide the unit onto the pressure mechanism Once the unit is slid fully home it is secured by closing the locking clip NOTE When the transfer head is loaded with material ensure that the cover is fitted when the ProFlow unit is not in use The cover must be removed prior to print operation Ta Pressure Mechanism raised position E E O 0 a 6 Pressure Mechanism T Locating Dowels 2 positions Locking Clip ON ee Thumbscrew 2 positions LA Carrier Unit Cassette Clamp Bracket Conditioning Chamber 2 positions Figure 9 7 Transfer Head to Pressure Mechanism Interface Transfer Head Size To enable the ProFlow to effectively print on wider boards the cassette style Option transfer head is suppl
25. ied in three different size options of 300mm 350mm and 400mm The 300mm size cassette is used with all of these options Transfer Head Table in the Module Overview Section refers 500mm Cassette Carrier Unit 550mm Transfer Head Unit Figure 9 8 Transfer head 350mm Chapter Issue 5 Jun O1 Technical Reference Manual 9 9 PROFLOW MODULE 265 MECHANICAL DETAIL Conditioning Chamber 9 10 HORIZON The ProFlow transfer head contains a conditioning chamber for maintaining the condition of the print material This chamber can be accessed by removing the primary grid which is accessible whilst the carrier unit is in the open position The grid is sealed onto the conditioning chamber by means of two M4 counter sunk screws and O ring which fits into the transfer head ProFlow Transfer Head Figure refers There are two types of conditioning chamber for both the cassette carrier unit and rechargeable unit as follows e Single Conditioning Chamber e Dual Conditioning Chamber The single conditioning chamber ensures maximum print material optimization on conventional SMT PCBs printing the printing material is driven around the conditioning chamber and bottom chamber by the action of the adhesive nature of the printing material to the stencil while the transfer head traverses the image ProFlow Movement Y Axis Piston A Crosshead Transfer O ane i EE Print Material
26. is the same in both cases On removal of the ProFlow paste pressure piston pressure ie on completion of print stroke or knead function the ProFlow paste pressure is reduced to ProFlow idle pressure NOTE Paste pressure parameters can be adjusted in the product file under edit data or by selecting the Adjust button during machine running A light pressure is applied whilst the ProFlow unit is idle but remaining in contact with the stencil surface This pressure is sufficient to prevent air pockets forming in the ProFlow system but not enough to cause print material seepage NOTE Idle pressure does not affect movement of the screen chase Idle pressure parameters can be adjusted in the product file under edit data or by selecting the Adjust button during machine running No pressure is exerted whilst the printer is in the following configurations e When refilling or changing a cassette e Whilst the ProFlow unit is off the stencil e Whilst the ProFlow unit is being placed on or lifted off the screen In the event of an E Stop action pressure on the transfer head is released altogether Upon restoration of system power any pressure that was previously applied to the unit is restored provided that the system 1s not re initialized For information on the regulator setting refer to the Pneumatic Module Chapter Technical Reference Manual Chapter Issue 5 Jun O1 ProFlow Stencil Support Height Adjustment Chap
27. mm PCB Thickness EA e R Board Board Mi Vv Figure 9 26 Setting Up Stencil Support Height Technical Reference Manual 9 35 PROFLOW MODULE REPLACEMENT PROCEDURES 265_ HORIZON REPLACEMENT PROCEDURES Squeegees to Instances may occur when the machine is required to print using the ProFlow ProFlow module configuration The following procedure details how to revert the machine from squeegee use to the ProFlow configuration ProFlow Printhead 1 Mechanism In Diagnostics ensure that the squeegees are homed Position the print carriage so that removal and fit is carried out within easy reach 2 Switch the machine OFF and disconnect pneumatics If squeegees are fitted remove to a safe stowage 4 Remove the following squeegee mechanism connectors from the print car riage right hand side 9PL16 Front squeegee motor 9PL17 Rear squeegee motor 9PLOS Front and rear home sensors 9PL19 Pressure amplifier if fitted Loosen the four captive screws securing the squeegee printhead mechanism to the print carriage using a 4mm Allen key see figure below Carefully remove the mechanism out of the print carriage Remove to safe stowage a E gt o o l Captive Screw 4 positions 9 36 Technical Reference Manual Chapter Issue 5 Jun
28. ng in the alternate direction NOTE When printing has finished the unit can be left on the screen in its contact position and the print material remains sealed to the atmosphere If the ProFlow unit is not to be utilized for a prolonged period of time it should be separated from the screen and the cover fitted 9 22 Technical Reference Manual Chapter Issue 5 Jun O1 SEQUENCES PROFLOW MODULE 265_ 1 HORIZON Print Carriage Giesvell Contact Height y Zero Pressure Board Clamp 2 positions Board gt oystem Pressure System Pressure Faste Fressure f j gt Print Carriage Movement gt E E Step 3 Paste Pressure Applied During Print Stroke Contact Height V Zero Pressure Printed Board Step 4 Paste Pressure Followed by System Pressure Removed at End of Print Stroke Figure 9 20 Side View of ProFlow During Print Cycle Chapter Issue 5 Jun 01 Technical Reference Manual 9 25 PROFLOW MODULE 265 SEQUENCES HORIZON ProFlow Placement This sequence is
29. nts Piston Crosshead Figure 9 24 Cassette Low Sensor Rechargeable 8 When using a rechargeable transfer head and paste low sensor activation 1s Transfer Head required at the mid diaphragm point the reed sensor can be inverted so that a Option higher sensor initiation can be achieved In this position the sensor cable is at the bottom of the sensor 9 30 Technical Reference Manual Chapter Issue 5 Jun 01 ProFlow Contact Position Setup Chapter Issue 5 Jun 01 PROFLOW MODULE HORIZON ADJUSTMENTS AND SETTINGS To set up the ProFlow contact height position carry out the following procedures In Module Diagnostics Page select Rising Table Select Home Rising Table Select Run Diagnost Select Exit to return to Module Diagnostics Page In Module Diagnostics Page select Camera Axes Select Home Camera X Axis Select Run Diagnost Select Home Camera Y Axis A O eee ee Select Run Diagnost 10 Select Exit to return to Module Diagnostics Page 11 In the Module Diagnostics Page select ProFlow 12 Select Home ProFlow 13 Select Run Diagnost 14 Select Exit to return to Module Diagnostics Page 15 In the Module Diagnostics Page select Print Carriage 16 Select Home Print Carriage 17 Select Run Diagnost 18 Select Drive Carriage Using Jog Buttons 19 Using the jog buttons drive the Print Carriage to the mid position of the stencil 20 Load a stencil with an off centre image 21 At the MMI
30. on The speed at which the pressure actuators force the piston crosshead onto the cassette 1s factory set this can be adjusted if the material supply is inadequate or too fast Adjustments are made at the exhaust flow restrictors control on the pilot valve see Adjustments and Settings Exhaust Flow Restrictors Section of this chapter for further information Exhaust Flow Restrictor 2 Fositions Pressure Regulator Air Pilot Valve Pressure Actuator 2 positions Piston Crosshead ProFlow Pressure Mechanism Cover Removed Figure 9 15 Pneumatic Supply Main Components Technical Reference Manual 9 17 PROFLOW MODULE 265 MECHANICAL DETAIL Software Control 9 18 HORIZON For ProFlow pressure mechanisms with the software controlled air regulator option system air pressure is applied to the piston crosshead enabling the pressure actuators ProFlow pressure is factory set at 2 0 bar however this can be adjusted by means of the ProFlow paste pressure parameter under edit data With this software option a further parameter Idle Pressure is available This parameter applies a light pressure onto the piston crosshead and print material system whilst the ProFlow unit is idle but remaining on the stencil surface Refer to Adjustments and Settings Software Pressure Adjustment Section of this chapter for further details Piston Crosshead
31. oss Section with Cassette Option Technical Reference Manual 9 3 PROFLOW MODULE 265 MODULE OVERVIEW HORIZON Machine Print ProFlow Mechanism ProFlow Home Carriage ProFlow Pneumatic Drive ProFlow Motor Sensor Connector Connectors 2 Fositions Connector i Al WU UUI MTV UU WU UT LIU LA j gt AN AANA a i lann E gt NW ProFlow Fitted Faste Low Connector ProFlow Pressure Mechanism ProFlow Transfer Head Front View of Print Carriage Showing ProFlow Fitted cassette option Print Carriage Motor Drive Pulley ProFlow Printhead Mechanism Bearing Block ProFlow Pressure Mechanism ProFlow Transfer Head ProFlow Mechanism Attachment Foints in 2 positions f View on Arrow A air line omitted for clarity Figure 9 3 ProFlow Fitted to Machine 9 4 Technical Reference Manual Chapter Issue 5 Jun 01
32. performing the shake off or knead over rail function Depending on the stencil it s justification and the board width a particular product may have none one or two shake off envelopes If the unit 1s not in a shake off envelope a lift off 1s carried out This sequence is designed to raise the ProFlow unit clear of the stencil without leaving a print medium deposit on the stencil Pre conditions exist prior to any shake off procedure these are e ProFlow is on the stencil inside the shake off envelope for the current product or a board is in place e No pressure is being applied to the Paste system e The stencil protection parameter in the board file is set to OFF Technical Reference Manual Chapter Issue 5 Jun O1 Lift off Knead Paste Chapter Issue 5 Jun 01 PROFLOW MODULE HORIZON SEQUENCES The following sequence occurs when shake off is initiated 1 The print carriage moves away from the stencil image at set print speed It moves in the reverse direction and back again when it is not possible for the initial movement to be away from the image it moves towards it This cycle is repeated twice more while at the same time the unit is raised 2mm sec 2 ProFlow is raised to the zero height position This sequence is designed to raise the ProFlow unit straight up off the stencil without any movement in the horizontal plane A print medium deposit may be left on the stencil The preconditions for
33. r a Board The knead over board function only occurs when the knead off image parameter is set to disabled Knead occurs over the next print board from either direction 1 Load a board if a board is not already in place 2 ProFlow is lowered to print height as set by ProFlow knead pressure and ProFlow paste pressure is applied to the system 3 The ProFlow unit is driven backwards and forwards over the loaded board the number of times set by the current value of the knead deposits parameter The message Performing knead over board is displayed 4 Upon completion ProFlow paste pressure piston pressure is changed to ProFlow idle pressure and ProFlow raises to the contact height position 9 26 Technical Reference Manual Chapter Issue 5 Jun 01 PROFLOW MODULE HORIZON POSITIONING POSITIONING ProFlow has four vertically positioned configurations Home Position Zero Height Contact Height Print Height Home Position The home position is when the ProFlow unit is fully raised The ProFlow unit is homed on the following occasions Initialization Power Up Exiting Diagnostics When power is restored following system power down Print Carriage ProFlow Unit Stencil Figure 9 21 ProFlow in the Home Position Zero Height The
34. r rear rail board clamps System Pressure 2 System pressure is applied to the ProFlow unit prior to the print carriage commencing the print stroke ProFlow print height Step 2 of ProFlow Print Cycle Figure refers NOTE System pressure is the force exerted by ProFlow utilizing the ProFlow printhead stepper motor onto the stencil during the print cycle A downward force of approximately 3 kilograms is found to be suitable fora 300mm size ProFlow unit Paste Pressure 3 Paste pressure is applied to the ProFlow transfer head during the print stroke Step 3 of ProFlow Print Cycle Figure refers A downward pneumatic pressure of approximately 2 bar is exerted onto the transfer head unit by the ProFlow pressure mechanism 4 The print carriage performs a print stroke at a speed of between 2 150mm sec Step 3 of ProFlow Print Cycle Figure refers Paste pressure 1s removed from the transfer head on completion of the print stroke and before system pressure 1s removed NOTE If software controlled pressure mechanism is fitted the paste pressure changes to idle pressure 5 The print carriage stops at a position centrally on a rail ensuring that ProFlow is well supported whilst still under system pressure 6 The system pressure is removed returning the ProFlow unit to contact height zero pressure Step 4 of ProFlow Print Cycle Figure refers ProFlow is now ready to print the next board by repeating the above sequence whilst travelli
35. reduced to a minimum For further information refer to the Adjustments and Settings section of this chapter Reed Switch Pressure Actuator cutaway a y Piston Diaphragm magnetized r VA Direction of Piston Piston Crosshead Movement Digital Input to MultiMove x12 V User 12V N Red ov _ An i normally open J 0 a 3 a ce OV Opto isolator Reed Switch and Circuit Schematic Black Figure 9 19 Reed Switch and Circuit Schematic Technical Reference Manual 9 21 PROFLOW MODULE 265 SEQUENCES HORIZON SEQUENCES Print Cycle ProFlow is a single bi directional printing device there is no requirement with the exception of knead paste to carry out any vertical movements at the end of each print stroke Contact Height 1 At the start of the print cycle the ProFlow unit is lowered to contact height zero pressure onto the screen Step 1 of ProFlow Print Cycle figure refers NOTE When the unit is on the screen the paste pressure is either at a Off manually adjusted pressure mechanism option b Idle Pressure software adjusted pressure mechanism option The print carriage is positioned to ensure that when the rising table is lifted the ProFlow wipers are positioned directly over the front o
36. rted stencil Support the stencil to keep the top sur face of the as flat as possible Cassette empty Replace cassette and check adjustment of paste low sensor Bridging Variation in stencil height due to Ensure the boards are clean and flat foreign matter between board and the underside of the stencil is clean and stencil free from damage Bad board support causing the board to Modify the board support tooling bow upwards strategy and check that the rail to table height is set correctly Pneumatic pressure too high Reduce paste pressure or increase print carriage speed Print carriage speed too low Increase print carriage speed or reduce pneumatic pressure Solder paste slump Control the temperature in the pre placement Bridging at the end of the print stroke Rail to table height incorrectly set Check and reset rail to table height dimension Pads too close to the edge of the board Board design for DEK machines requires a 5mm distance from the board edge to the apertures Board Pons Ca pene Ore not level or parallel ECB 638 Print wedging i itst Reduce system pressure Print speed too fast for the paste being Change the print speed used Chapter Issue 5 Jun 01 Technical Reference Manual 9 43 PROFLOW MODULE 265 FAULT FINDING HORIZON Transfer head too large for product Use 300mm head for all products up to 300mm long and shortest possible for larger produc
37. so applied during the print stroke at this position ProFlow Lowered to Print Height System Pressure NOTE Faste Fressure is applied a during the print cycle ie when the unit moves across the stencil apertures Figure 9 23 ProFlow in the Print Height Position 9 28 Technical Reference Manual Chapter Issue 5 Jun 01 ADJUSTMENTS AND SETTINGS PROFLOW MODULE 265_ HORIZON ADJUSTMENTS AND SETTINGS Cassette Low Sensor Cassette Option Chapter Issue 5 Jun 01 The cassette low sensor position can be changed in order to minimize print material wastage A graduated scale millimetre on the actuator cylinder body provides a reference point for accurate sensor positioning Cassette Low Sensor figure refers The sensor is moved up or down by loosening the securing screw 1 5mm Allen key The factory setting for the sensor is set to 20mm on the graduated scale Each millimetre movement is equivalent to approximately 43gms of print material usage WARNING SOLDER PASTE AND SOLVENTS WHEN USING OR HANDLING ANY SOLDER PASTE OR SOLVENT FORMULATION THE MANUFACTURERS RECOMMEND SAFETY PRECAUTIONS MUST BE STRICTLY ADHERED TO WARNING PROTECTIVE CLOTHING APPROVED PROTECTIVE CLOTHING
38. ssure Mechanism cover removed Reed Sensor Actuator Graduated Marker B Piston Crosshead Bi Figure 9 18 Cassette Low Sensor Location 9 20 Technical Reference Manual Chapter Issue 5 Jun 01 i a Cassette Low Sensor Chapter Issue 5 Jun O1 PROFLOW MODULE DRIVES AND SENSORS HORIZON When the paste reservoir becomes low or empty of print material the sensor operates giving a warning window on the machine monitor and the indication of the tricoloured beacon is changed NOTE Selecting Warn Pause or Suspend in Set Preferences Consumable Action affects the machine reaction to a Cassette Low indication Refer to the Set Preferences and Consumable Replenishments chapters of the User manual for more details The cassette low sensor reed switch is secured to the left pneumatic actuator on the ProFlow pressure mechanism ProFlow Cassette Low Sensor refers The pneumatic actuator pistons move slowly down as the print medium inside the transfer head is used up The sensor reed switch is enabled when the magnetized piston diaphragm comes into close proximity with it Reed Switch and Circuit Schematic figure below refers The input for the cassette low sensor floats high until the reed switch is enabled once made the input is pulled down to Ov This information is fed to the MultiMove X12 card IN6 of the machine controller NOTE The cassette low sensor is height adjustable so that print material wastage can be
39. te sealing strip must be removed Two clamp brackets at each end of the transfer head are latched over the carrier and cassette these are secured by tightening the thumbscrews into the carrier dimples The cover is fitted to the underside of the ProFlow transfer head during periods when the ProFlow unit is not in use This seals any exposed printing material from the atmosphere and also prevents inadvertent seepage or spills onto the stencil The 300mm ProFlow cassette capacity is between 800g and 850g of solder paste WARNING SOLDER PASTE AND SOLVENTS WHEN USING OR HANDLING ANY SOLDER PASTE OR SOLVENT FORMULATION THE MANUFACTURERS RECOMMEND SAFETY PRECAUTIONS MUST BE STRICTLY ADHERED TO WARNING PROTECTIVE CLOTHING APPROVED PROTECTIVE CLOTHING SHOULD BE WORN BY SOLDER PASTE AND SOLVENT HANDLERS AT ALL TIMES TO ELIMINATE FUME INHALATION EYE CONTACT SKIN CONTACT AND INGESTION Figure 9 9 Cassette Overview Technical Reference Manual 9 11 PROFLOW MODULE 265 MECHANICAL DETAIL 9 12 HORIZON The specially designed ProFlow cassette makes loading of the print material rapid and user friendly The cassette system reduces waste to an absolute minimum and is also environmentally friendly the operator does not have to touch or manually work print material at any stage during print operations The routine for changing cassettes is detailed in the Consumable Replenish ments Chapter of the User manual
40. ter Issue 5 Jun 01 PROFLOW MODULE HORIZON ADJUSTMENTS AND SETTINGS The ProFlow stencil support option provides stencil support when printing boards that are narrower than the ProFlow transfer head thus avoiding potential paste smearing onto the top of the stencil The standard height when the adjustable tooling top is in the closed position is lmm The support comprises the following items e Changeable Gauge Plate e Tooling Bottom e Adjustable Tooling Top Refer to Board Support Tooling Chapter of this manual for further information To set the ProFlow stencil support to the correct height carry out the following 1 Loosen the 7mm hexagonal nut securing the tooling top and tooling bottom 2 Slide the adjustable tooling top upwards to open up the tooling top and bottom faces 3 Position the two printed circuit boards to be printed between the tooling top and bottom opening faces Setting Up Stencil Support Height Figure refers 4 Tighten the bolt locking the adjustable tooling top to the tooling bottom 5 Remove both printed circuit boards The support is now set to the correct screen height ie 81mm thickness of board Magnetic Support 2 positions Changeable Gauge Flate Tooling Bottom ie Adjustable Tooling a Top did aa Adjustabl T n P Stencil Support ge Height 81
41. ts Skis damaged or dirty Replace with latest issue skis Mylar vulcanized into PTFE black Too much paste pressure Reduce paste pressure Contact position set incorrectly Reset contact height to just deflect the stencil when viewed from the under side Insufficient paste on fine pitch devices Cassette empty Replace cassette and check adjustment of cassette low sensor Paste pressure too low Reset pneumatic pressure Insufficient board support Investigate modify tooling set up Incorrect stencil design Ensure that stencil conforms to aper ture height Insufficient paste through large aper Paste pressure too high Reset pneumatic pressure tures Print speed too high Adjust print carriage speed System System pressure too high too System pressure too high Adjust system pressure setting system Adjust system pressure setting setting Cassette empty Replace cassette and check cassette low sensor setting Insufficient paste in apertures at the Board bowed upwards by tooling too upwards by tooling too Move Move the tooling towards the centre of tooling towards the centre of end of print stroke close to the rails the board Rail to table height setting incorrect Check and reset the rail to table height causing bowing over the tooling pins setting Paste pressure too low Reset pneumatic pressure 9 44 Technical Reference Manual Chapter Issue 5 Jun O1
42. viously indicated Paste Load now indicates Knead Paste c In Diagnostics the ProFlow menu page can be accessed 6 Select Set Preference on the MMI and modify the settings to that indicated in the table below Nominal Setting Nominal Setting Range Parameter ProFlow Contact 5 5mm Min Min 10mm Max 10mm Incr 0 1mm Max 10mm Incr 0 1mm Position 7 By selecting Adjust on the MMI ensure that the following print process parameters in the table below are adjusted for use with ProFlow __ Nominal Setting Nominal Setting Range Parameter Front amp Rear Print 70mm sec Min 2mm sec Max Min 2mm sec Max 150mm sec Speed ProFlow System Min Okg Max 20kg Pressure Separation Speed Speed lOmmse Min Min 0 Imm sec Max 20mm sec Imm sec Max 20mm sec eaten Knead A A Max 20kg Pressure 8 Set the Proflow pressure mechanism pressure settings to read the following Nominal Setting Nominal Setting po ete Parameter Manually Controlled 2 2bar Option Paste Pressure Software Controlled Paste Pressure Option 0 2bar Min Obar Max 4bar Incr 0 2bar E pers NOTE The settings detailed represent the starting point for subsequent refinement and optimization Information on the machine set up procedures are detailed in the Machine Programming chapter of the User manual Technical Reference Manual Chapter Issue 5 Jun 01 Drive Belt Replacement Chapter Issue 5 Jun 01 PROFL
43. y offers a positive force to the ProFlow system during the print cycle providing a continuous supply of print material to the stencil NOTE This force should not be confused with ProFlow system pressure which is the force applied to the ProFlow unit by the printhead mechanism stepper motor For ProFlow pressure mechanisms with the manual pressure regulator option system air pressure is applied to the piston crosshead enabling the pressure actuators ProFlow pressure is factory set at 2 5 Bar however this can be adjusted by means of the regulator sited on the ProFlow pressure mechanism Pneumatic Supply Main Components figure refers NOTE Under normal conditions this setting may vary slightly between a typical range of 1 5 Bar to 3 Bar dependent upon material types print speeds and temperature changes Air supply is provided from the manifold assembly at the rear of the machine A regulator and gauge within the ProFlow pressure mechanism unit enables the manual adjustment and monitoring of air pressure to the piston actuators ProFlow utilizes two air lines The first air line is a continuous air supply from the mains air providing motive force Air supply from the manifold paste dispenser solenoid acts as a switching control to the ProFlow pilot air valve this enables two way actuator movement Standard software has control only of the switching air line therefore the crosshead piston may be either in the fully up or fully down positi
44. zero height position is when the ProFlow unit is raised to the number of steps on it s internal counting system to move to the home position The ProFlow unit is moved to zero on the following occasions Chapter Issue 5 Jun O1 Selecting Change ProFlow Selecting Change Screen Selecting Change Tooling Technical Reference Manual 9 27 PROFLOW MODULE 265 POSITIONING HORIZON Contact Height Contact height is when the ProFlow wipers are just in contact with the stencil but with no force exerted zero pressure NOTE For setting up information refer to Contact Height Position Set Up in Adjust ments and Settings Section of this chapter ProFlow should normally be left in this position when the unit is not in use this prevents material leakage contact with the air drying out and also prevents material contamination NOTE With software controlled pressure mechanism fitted idle pressure is applied to the piston not shown ProFlow Lowered in Contact with Screen Zero Pressure Figure 9 22 ProFlow in the Contact Height Position Print Height Print height is when the system pressure is being applied to ProFlow whilst positioned on the stencil system pressure is dependent upon the board file programmed Piston pressure is al
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