O P E R ATING INSTRUCTIONS FOR MODEL SPR-45 Automatic Screen and Stencil Printer

O P E R ATING INSTRUCTIONS FOR MODEL SPR-45 Automatic Screen and Stencil Printer

TABLE OF CONTENTS I. SPECIFICATIONS...3. II. SAFETY INSTRUCTIONS...4. III. INSTALLATION...5. IV. SET-UP...6. V. SYSTEM OPERATION...9. VI. Z AXIS ADJUSTMENT (Screen Height)...11. VII. X, Y AND Ø ADJUSTMENTS...11. VIII. SQUEEGEE ANGLE ADJUSTMENT...11. IX. MAINTENANCE...12. X. (OPTIONAL) VACUUM PLATE ATTACHMENT...13. XI. ELECTRICAL SCHEMATIC...13. XII. PNEUMATIC SCHEMATIC...14.

I. SPECIFICATIONS Power (model 45 only)................... 110 VAC, 50/60 Hz, 2 amp Ai r........................................... 60 TO 100 psi Overall dimensions........................ 30 W x 35 L x 16 H........................................(762 x 900 x 406mm) Di m e n s i o n s w i t h s t a n d...................... 30 W x 35 L x 47 H.......................................(762 x 900 x 11 9 4 m m ) Maximum print area..................... 16 x 18 (406 x 457 m m ) Theta adjustment............................ counter rotating dual knobs.................................................+ 5 range X & Y a d j u s t m e n t............................ + 0.500 (12.7mm) Z axis adjustment.............................. 0 to 5/8 (16mm).....................................single knob (self leveling) Approximate weight SPR-40........................150 lbs (68kg) Approximate weight SPR-45........................160 lbs (73kg) Stand option weight...............................47 lbs (21kg) WARNING: READ AND FOLLOW SAFETY INSTRUCTIONS BEFORE OPERAT I N G

II. SAFETY INSTRUCTIONS: 1. Only one person at a time should operate the system. 2. Stand clear of frame when attaching air to system, FRAME WILL RAISE TO UP-POSITION 3. Stand clear of frame while it is in motion. 4. Keep fingers (yours and others) away from squeegee and frame while it is in motion. 5. Do not try to defeat dual Cycle and Up/Down interlock controls. 6. When disconnecting air, ensure that frame is in down position. 7. CAUTION should be used when handling metal blade/squeegee. 8. Power should be OFF when setting left & right squeegee limit stops.

III. INSTALLATION The model SPR-45 is an automatic stencil or screen printer requiring electricity and shop air for operation. The SPR-45 should be placed on a sturdy work table (or bolted to its optional stand) approximately 28" from the floor to provide a comfortable area for the operator. Use leveling feet to eliminate movement on the bench (or floor) during printing and to level screen/stencil to Printing Plate. The SPR-45 is packed in its carton with the frame attached. Unbolt 4 screws from under carton. These holes in the base of the printer will be used to insert the 4 leveling feet. Remove from carton by lifting base plate assembly. DO NOT REMOVE FROM CARTON BY LIFTING SCREEN FRAME. DO NOT LIFT FROM REAR PANEL. Remove all items from the packing crate: 1. One SPR-45-stencil printer 2. One tubular frame 3. One dual squeegee assembly (attached) 4. Four (4) leveling feet 5. Lexan TM print alignment fixture 6. Six Board Stops for registration (in slots) 7. One 3/32 hex key 8. One 3/16 hex key 9. One power cord 10. One operator manual

IV. SET-UP A. Air and Electric Hook-up C A U T I O N: FRAME MAY LIFT WHEN AIR IS FIRST AT TACHED TO SYSTEM. ENSURE THAT FRAME SPEED REGULATOR AND SQUEEGEE SPEED REGULATOR ARE INITIALLY OFF (TURNED CLOCKWISE) 1. Attach air to 1/4 NPT female fitting provided in the rear of the machine (60 to 100 psig). 2. Plug in power cord to 120 VA C o u t l e t. SAFETY WARNING: STAND CLEAR WHEN RAISING AND LOWERING FRAME WHILE USING AUTOMATIC CONTROLS. B. Installing Screen/Stencil Frame (Refer to Illus. no. 2) 1. It is recommended to lift squeegee assembly to up position before attaching frame/stencil to system (loosen 2 thumb screws at front of assembly) 2. Loosen the front and back Universal Frame Holders via locking thumbscrews. 3. Move frame holders from front to back (and from back to front) so that the frame will be centered in the printer. 4. Place frame/stencil onto frame holders and secure frame/stencil by tightening Frame Clamps. NOTE: Frame holders/clamps will adjust to frames between 1-1/8" and 1-1/2" thick and to any frame smaller than 23" x 23" O.D. 5. Tighten 4 locking knobs on both sides to secure Universal Frame Holders. 6. Position left & right squeegee limit stops on rear guide rail so that squeegee stops short of frame. (Refer to Illustration 1.) 7. Ensure that socket head cap screws on squeegee limit stops face vertical. (see Illus. 1.) C. Registering Board: 1. Lift stencil frame to up position by using both left and right UP/DOWN switches. NOTE: See section III - D. through I. for pneumatic adjustments and initial set-up procedure. 2. Position clear Lexan TM sheet provided using the two brackets at rear of Print Deck. 3. Lower stencil frame to "down" position - use UP/DOWN switches 4. Swipe squeegee to apply paste through stencil to clear Lexan TM sheet. 5. Raise stencil frame to up position again. 6. Lift clear sheet enough to "roughly" place circuit board on Print Deck (match up pads on board to paste on clear sheet). Now remove clear sheet without moving PC board.

3/15 allen key Squeegee Limit Stop (proper orientation) Rear Squeegee Guide Rail Illustration No. 1. Adjustable front and rear Universal Frame Holders Universal frame locking thumb s c r e w s Squeegee limit stops (2) S t e n c i l F r a m e C l a m p s R e a r S q u e e g e e G u i d e R a i l Tubular or Cast Frame Pressure Plate (beneath stenci F r o n t S q u e e g e e G u i d e R a i l X Axis A d j u s t o r S t e n c i l F r a m e C l a m p s C y c l e C o n t r o l s K n u r l e d T h u m b S c r e w s Z Axis A d j u s t o r Illustration No. 2. Left Y (and Ø) Axis Adjustor Right Y (and Ø) Axis Adjustor R e g i s t r a t i o n Guide Pins

Board Stop Slides (6) Print Deck (pressure plate) Fig. 1 Slide Board Stops up to board on all edges Fig. 2 Tighten all Board Stop Slides around board using 3/32 hex key Fig. 3

7. Position Board Stops around PCB and tighten for precise registration*. (Figs. 1, 2, & 3) 8. Adjust height of print deck beneath frame with Z axis knob. The tensioned* stencil can be flush on the board or slightly above the board surface. 9. Using the X,Y and Ø -axis adjustment knobs on the front and sides of the machine, regist e r the pattern of the stencil apertures to the pads on the board. Final registration can be done most accurately by looking directly down on the stencil while moving the plate. (Refer to X, Y and Ø adjustments in sections IV. & V. ) *NOTE: For pin positioning of circuit boards contact factory for recommended methods. *If using a screen or untensioned stencil, it's important to support the area around the PCB with boards of identical thickness to prevent screen damage V. SYSTEM OPERATION (refer to Illustrations 1, 2, 3 & 4) A. Once you have the board-to-stencil registration set, lift frame by toggling UP/DOWN switches simultaneously. B. Place PC board in registration frame (within Board Stops) on Print Deck. C. Lower the frame using UP/DOWN switches. D. Set UP/DOWN (frame lift) speed by turning Clamshell Speed Regulator counter clockwise until desired speed is attained. (clockwise is closed - start there). E. Set squeegee pressure to approx. 20 to 30. Clockwise increases the pressure shown on gauge (use approx. 1.5 psi for each linear inch of squeegee). F. Set the squeegee speed by turning Squeegee Speed Regulator counter clockwise until desired speed is attained by trying several dry runs. (clockwise is closed - start there). G. Select SINGLE or DOUBLE pass of the squeegee (usually double). H. Along inward edge of squeegee apply row of (room temperature) solder paste on stencil. I. J. Simultaneously press 2 (red) CYCLE buttons on either side of control panel and hold until cycle is complete - during the full cycle, frame will close, squeegee will make single or double pass, and frame will lift (cycle is then complete). Inspect paste on board carefully and make speed and pressure adjustments to insure complete coverage of pads. It may take several trial runs to get the quality expected. K. When frame lifts after each cycle, remove board and insert new board. L. Repeat steps, taking note of when more solder paste might have to be added. C A U T I O N: FRAME MAY LIFT WHEN AIR IS FIRST AT TACHED TO S Y S T E M. ENSURE THAT CLAMSHELL SPEED REGULATOR AND SQUEEGEE SPEED R E G U L ATOR ARE INITIALLY OFF (TURNED CLOCKWISE)

Slide Rail Board Stop S l i d e s Print Deck (Pressure Plate) Illustration No. 3. Cycle Controls Squeegee Pressure Regulator Clamshell Speed Regulator (clockwise is closed) Squeegee Speed Regulator (clockwise is closed) Single or double squeegee pass UP/DOWN Switch CYCLE Button UP/DOWN Switch CYCLE Button ON/OFF Switch Squeegee Pressure Gauge in psi Cycle Controls Illustration No. 4.

VI. Z-AXIS ADJUSTMENT A. Z-Axis, or the height of the stencil above the board, is referred to as the stand-off height. B. Z-Axis leveling is factory preset. Insure that stencil printer leveling feet are set properly to level printer (use level) If the stencil plane to print deck plane is not parallel, consult factory. C. To adjust the stand-off height, turn the Z Axis Adjustor knob (front at right) clockwise to raise the print deck and counter-clockwise to lower the print deck. VII. X, Y AND THETA ADJUSTMENTS A. To align the circuit board to the hole pattern on the stencil, the SPR-45 is equipped with registration control knobs that provide +0.5" of movement in the X axis and Y axis and + 5º diagonally (theta rotation). B. On the front of the unit, the 2 adjustment knobs (left and center) control the Y-axis (front and back) and the theta (skew) for board-to-stencil fine registration. C. Turning the Y knobs simultaneously clockwise will move the pressure plate towards the front of the machine. Turning the Y knobs simultaneously counter-clockwise will move the pressure plate towards the rear of the machine. D. Turning the left Y knob counter-clockwise while turning the right Y knob clockwise will cause the pressure plate to rotate clockwise. Turning the right Y knob counter- c l o c k w i s e while turning the left Y knob clockwise will cause the pressure plate to rotate counter-clockwise. E. The adjustment knob on the right side of the unit controls the X-axis (side to side) movement of the Print Deck. Turning the X axis knob clockwise moves the print deck from left-to-right, and turning counter-clockwise moves the print deck right-to-left. F. Align the stencil with the pads on the substrate by looking through the screen or stencil openings while turning the appropriate axis control knob(s). Several test prints are recommended to verify fine registration. VIII. DUAL SQUEEGEE ANGLE ADJUSTMENT A. Squeegee angle is factory set and normally doesn t need to be be changed; however, to do so: B. Loosen set screws of both collars at top of squeegee assembly (9/64 allen key provided) C. Lift squeegee to give squeegee a steeper angle. D. Lower both collars and tighten collar set screws. 9/64 allen key C o l l a r s Illustration No. 5.

IX. MAINTENANCE 1. Clean the unit thoroughly after each use. Use solvent, such as isopropyl alcohol, to remove any ink or paste deposits. 2. Lubricate squeegee guide rails with light oil every 40 hours of use. 3. The unit will give you years of reliable service.

X. SPR-45 VACUUM PLATE ATTACHMENT OPTION A. Position plate so that manifold is towards the rear, and 4 corner holes line up. B. Attach vacuum plate to Print Deck using four (4) screws provided at each corner into pre-tapped holes. C. Attach a shop-vac or other source of vacuum to 1" hose fitting. D. Cover vacuum air holes around board to maximize the available vacuum. Vacuum IN - 1 inch hose fitting Screws (4) Vacuum plate Pressure plate Pre-tapped holes (4)

Foil Disengage 2 (two) screws to enable lifting of squeegee assembly Squeegee lift handle (to access foil stencil for applying solder paste directly to the foil)