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APR‐HHA HEATER HEAD REMOVE‐INSTALL INSTRUCTIONS
Required Tools:
3/32" hex allen L‐key
3/32" hex allen key (long straight driver type preferred)
7/16" hex allen key
REMOVAL
1. Machine is OFF; head is at top home position (preferred)
2. Remove any nozzles and/or vacuum cups from heater head/vacuum tube
3. Remove 6x rear screws head face cover; disconnect LED 2‐pin wire harness and remove cover
Head face cover
4. As shown, manually hold air cylinder lever in down position to allow movement of the vacuum tube
5. Place finger at bottom of vacuum tube and gently lift upward to topmost 'up' position
6. Release air cylinder lever to lock tube in up position (this will help 'protect' the tube when removing heater head)
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Summary of Contents for APR APR-HHA
- Page 1 APR‐HHA HEATER HEAD REMOVE‐INSTALL INSTRUCTIONS Required Tools: 3/32” hex allen L‐key 3/32” hex allen key (long straight driver type preferred) 7/16” hex allen key REMOVAL 1. Machine is OFF; head is at top home position (preferred) 2. Remove any nozzles and/or vacuum cups from heater head/vacuum tube 3. Remove 6x rear screws head face cover; disconnect LED 2‐pin wire harness and remove cover Head face cover 4. As shown, manually hold air cylinder lever in down position to allow movement of the vacuum tube 5. Place finger at bottom of vacuum tube and gently lift upward to topmost ‘up’ position 6. Release air cylinder lever to lock tube in up position (this will help ‘protect’ the tube when removing heater head)
- Page 2 7. Inside head, locate and disconnect large white 3‐pin power connector and 4‐pin small RTD connector for APR‐HHA heater head 3‐pin POWER conn 4‐pin RTD conn 8. Locate and remove 3x spring‐loaded APR‐HHA head mounting screws from bottom holes as shown (3/32” allen key); as last screw removed hold the HHA and carefully allow it to drop to ‘rest’ position; it will be held in place by the 2x airflow tubes in rear 3x access HHA mounting screws 3x access holes for 3/32” long straight driver type hex allen key HHA mount screws preferred 9. While holding the HHA head, remove both blue‐banded and white‐banded airflow tubes from rear of head and slowly drop HHA head below vacuum tube end to remove completely IMPORTANT! WHLE REMOVING HEAD BE CAREFUL NOT TO BEND VACUUM TUBE! AIRFLOW TUBING Blue‐banded TOP White‐banded BOTTOM...
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Page 3: Installation
10. Locate washer, 3x springs and screws for re‐installation later INSTALLATION 11. Place washer on top of heater head center hole 12. Place 3x springs in screw locations top of heater head 13. Carefully align heater head center hole to vacuum tube and move head upward IMPORTANT! WHLE INSTALLING HEAD BE CAREFUL NOT TO BEND VACUUM TUBE! 14. While holding head in place, carefully install 2x airflow tubes to rear pipes IMPORTANT: BLUE‐BANDED TUBE installed at TOP, WHITE‐BANDED TUBE installed at BOTTOM If installing these flow tubes in error it will generate an overtemp error when running heater head 15. Carefully move head upward; install 3x mounting screws through bottom holes and attach the head to the casting bottom (NOTE: 3/32” hex allen key with long straight screwdriver type handle is preferred tool for installation) 16. Tighten all 3x spring‐loaded mounting screws until they ‘stop’ (all the way up) - Page 4 17. IMPORTANT STEP! Use a small tool to tighten the female socket connectors on 4‐pin RTD connector as shown 18. Re‐install heater head 4‐pin RTD connection and large white 3‐pin power connection inside head; be sure to route wiring away from vacuum tube, etc. to keep from getting ‘pinched’ 19. Check airflow tubing for bends and kinks Use small pointed instrument (like pick) to carefully “squeeze together” sides of female “U” shaped connector in order to make good connection with male pins. Be careful not to damage connector or squeeze too much so that male pin will not fit inside Also use some contact 4‐pin RTD connector cleaner spray on both Female sockets connectors if possible Check tubing INSTALL NOZZLE LEVER 20. Place rod inside nozzle lever holder and install nozzle lever by threading into hole on nozzle ring 21. Tighten nozzle lever with a slight turn using pliers 22. To adjust rotation travel, pull off the lever boot and use .035 hex allen key to adjust small set screw inside lever handle; when rotating the nozzle should have some slight drag and not be too loose...
- Page 5 Nozzle ring Nozzle lever Adjust set screw inside to tighten nozzle ring CHECK/ADJUST NOZZLE CO‐PLANARITY WITH BOARD LEVEL Turn on machine and open software The following procedure is for making sure that the reflow nozzle edges are parallel or co‐planar to pcba or board level 23. Attach a reflow nozzle to the APR nozzle ring. The preferred nozzle size is a large size, NZA‐400‐400 or NZA‐450‐ 450 for example. 24. If available, install an unpopulated pcba into the board holder. If necessary, reverse mount the bottom plate of the optical kit so bottom faces up. All that is needed is a flat surface at pcba level to compare with nozzle edge. 25. Verify that the board is level in board holder 26. Remove any VNZ pipette from the vacuum tube, it will not be necessary for this procedure. 27. Bring the head downward in FAST speed until head stops. Switch to COARSE speed and bring down reflow nozzle edge to about 0.25” (10.0mm) above board level. Switch to FINE speed and adjust to 5‐10 mil or as needed. Bring the head down until the reflow nozzle edges are just above board level. 28. Examine all 4 sides of the reflow nozzle edges with respect to board level. All 4 sides should be parallel to board level. If nozzle edges are not parallel or co‐planar, adjust the 3 spring‐loaded screws holding the heater head assembly to the head casting. For side‐to‐side (pivot) adjustment concentrate on 2 rear screws. For front‐to‐rear (pivot) adjustment concentrate on front screw. Final adjustment may require a combination of the 3 adjust screws. NOTE: Ensure that 3 screws for holding heater head assembly are not too loose so the heater head is hanging loosely off the head casting. If screws get too loose, tighten up all 3 screws to get a new starting point and start co‐ planarity adjustment over.
- Page 6 4x nozzle bottom edges parallel to pcba level 3x spring-loaded screws for heater head assembly; access from bottom CENTER VACUUM TUBE IN NOZZLE the following adjustment is to have the vacuum pipette centered as best possible inside the nozzle box. NOTE: nozzle adjustment is done after nozzle co‐planarity adjustment. 30. Any combination of VNZ vacuum pipette and NZA reflow box nozzle can be used, but for more accuracy in adjustment select a smaller VNZ and NZA combination. The following will use VNZ‐05 (5mm) and NZA‐060‐060 (6mm box) as example. 31. Install VNZ‐03 vacuum pipette into vacuum tube. Attach NZA‐060‐060 reflow nozzle. 32. In software manual mode, put the vacuum tube in FREE. Use a finger to lift up vacuum pipette so that it is at same approximate level as bottom nozzle edge, then put the vacuum tube in LOCK (old soft‐Down) to keep pipe in place. 33. Pull out the camera. In COARSE mode, lower the head to where the reflow nozzle bottom edge is about 1”...
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Page 7: Check Functions
Pipe level with nozzle edge Vacuum cup center to nozzle box 35. If the vacuum pipette appears off‐center to the edges of the nozzle box, loosen 4 holding screws on the upper heater head plate. 36. Manually move the heater assembly position until vacuum pipette is centered in the nozzle box. 37. Using the lever, turn the nozzle full rotation and stop at each side to check centering. It may be necessary to do a “best possible” centering adjustment for vacuum pipette to accommodate each side of a full nozzle rotation (4 edges). 38. After centering the vacuum pipette to the nozzle box, tighten the 4 screws on the upper plate and re‐verify centering. NOTE: If the 3 spring‐loaded heater head screws described in Section 3 are adjusted off and nozzle is hanging too much at an angle it may not be possible to center the pipette in the box, this is why it important to perform nozzle‐to‐board co‐planarity adjustment before centering. Bottom View 4x nuts CHECK FUNCTIONS 39. Run thermal cycle for top heater head... - Page 8 40. Check vacuum tube FREE function in manual mode (if head is misaligned the tube may contact and scrape at the bottom grille hole edge)
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