For the Agilent Archon Autosampler Rework Instructions CAUTION This kit is intended for use by Agilent Service personnel only. Elevator Removal 1 Open top cover. 2 Open front lower door. 3 Remove vial tray. 4 Remove the rear panel. 5 Remove the vial holder part of the elevator using a 3/32 inch Allen wrench (a T-handled Allen wrench may be easier). Manually move the elevator upwards to the middle of its stroke by rotating the leadscrew pulley behind the syringe plate. Allen Wrench Agilent Technologies
6 Pull bottom of elevator away from knockoff plate. Knockoff plate 7 Grab knockoff plate between the two probes, (be careful of the exposed syringe tips). Pull gently outward to disengage the knockoff plate from the probes and brass stops. Brass stops 2 Rework Instructions
8 Cut the 1 foot piece of 1/8 od polyurethane tubing in half. Put the 2 pieces onto the ends of both probes and slide them upwards until the id contacts the wider, upper portion of the probes. Press each piece of tubing slightly so it is firmly holding the probes. Tubing 9 While holding the elevator from the front side of the syringe plate to prevent the screw from falling, use a 3/32 inch Allen wrench to remove the screw holding the wire mount. Holding screws Rework Instructions 3
10 Place the elevator inside unit, near equilibrium block. You may need to cut the tie wraps holding the wires in place. You must have access to both screws. Elevator 11 Remove the T-block. Use a 7/64 inch Allen wrench on both screws. T-block 4 Rework Instructions
12 Disconnect the ground wire from the block using a Phillips screwdriver. Replace the screw in the block. Screw Rework Instructions 5
Drive Assembly Removal 1 Remove the two bottom Phillips flathead screws. Screws 1 (A) If the screw heads are not exposed: Remove all three screws with grommet from upper portion of syringe plate. Grommets and screws 6 Rework Instructions
1) (B) Remove Phillips screw from center of syringe plate. Using a large flat blade screwdriver, raise syringe plate to remove screws from other side. Screw 2 Move the stepper Motor to access the two screws. Stepper motor Rework Instructions 7
3 Remove top two Phillips pan head screws. Screws 4 Move the bottom of the elevator assembly outside the unit. 8 Rework Instructions
5 Remove the 4-40 Allen-head cap screw from the leadscrew with a 3/32 inch Allen wrench. (You may need to hold the top pulley wheel against the torque applied to the bottom of the leadscrew by the Allen wrench). Rework Instructions 9
Old Leadscrew and Bushing Removal 1 Remove the lower plate from the two shafts slowly (bearing parts may fall out). 2 Remove the bearing parts from the lower end of the shaft. If some remain on the shaft, set them back in place in the lower plate, and set the plate aside, leaving it in a vertical orientation so that the bearing axis is horizontal, thus preventing bearing parts from falling out. 10 Rework Instructions
3 Loosen the two setscrews on the pulley on the motor ¼ turn, using a 5/64 inch Allen wrench. Motor pulley 4 Loosen the two setscrews on the pulley on the leadscrew, using a 1/16 inch Allen wrench. Leadscrew pulley 5 Pull both pulleys off their respective shafts simultaneously. Rework Instructions 11
6 Pull the leadscrew out of the top plate, being careful not to loosen the ball bearing at its end. Set the bearing aside. 12 Rework Instructions
New Leadscrew and Bushing Installation 1 Verify that the leadscrew still rotates easily in the body. If not, remove the shaft from one bushing, break the Loctite on the bushing it is still threaded into, and rotate and slide the bushing until the shaft again rotates freely while engaged in both bushings on the body. Glue in place using Loctite 430. Repeat this step to verify that the leadscrew rotates smoothly after gluing. 2 Put the two bushings and bushing spacer back onto the guide rod, with the spacer in the middle, and put them back through the recess in the aluminum body. 3 Re-install the ball bearing onto the end of the leadscrew. Reinstall bearing prior to reinstalling the leadscrew Rework Instructions 13
4 Insert the ends of both shafts into the lower plate, being sure to get the bearing parts back together in the right order, one bearing piece on each side of the lower aluminum block, covered by a flat washer. See Figure A below. Replace the 4-40 Allen cap screw in the end of the leadscrew and tighten with a 3/32 inch Allen wrench. See Figure B below. A B 14 Rework Instructions
5 Slide the two shafts into their positions in the motor plate. Make sure the limit switch bracket is low, not high on the body, and that the tab is on the left side of the two shafts when the tapped holes in both plates face the syringe plate. If the tab is closer to the motor plate than the middle of the moving aluminum body is, remove the shafts and put the opposite ends into the lower plate, then perform this step. 6 Put the black drive belt onto both pulleys, and slide both pulleys onto their respective shafts simultaneously. Line up the tops of the two pulleys with about 1/16 inch of clearance between the bottom of the pulleys and the top of the motor plate. Tighten both setscrews on both pulleys. See Figures following Steps 3 and 4, Old Leadscrew and Bushing Removal, page 11 for photos of the pulley setscrews. Rework Instructions 15
Drive Assembly Re-Installation 1 Set the elevator shaft mechanism in place against the syringe plate (see Drive Assembly Removal, page 6, Step 1, Figure A) and loosely install the top flat head screws on the syringe plate (see Figure B, page 7. 2 Insert the bottom two flat head screws and tighten fully. See page 6, Step 1, for photo. 3 Tighten the top two screws installed in Step 1 above. 4 Re-install the T-block removed in Elevator Removal, page 4, Step 11. Move the elevator down if required by rotating the motor pulley counterclockwise. As you are tightening the screws, verify that the T is centered in the slot, and is not rubbing on either side of the slot in the syringe plate. 16 Rework Instructions
Elevator Re-Installation 1 Remove the pieces of polyurethane tubing, (installed in Elevator Removal, page 3, Step 8), from both probes. 2 Carefully pull both syringes slightly away from the syringe plate and move the knockoff plate up toward them, guiding the probes into the holes in the knockoff plate. Set the knockoff plate on the two brass stops protruding from the syringe plate. See Elevator Removal, page 2, Step 7 for photo. 3 Pull on the bottom plate of the vial holding part of the elevator while pressing gently toward the syringe plate until the bottom plate snaps into the recess on the T-block. See Elevator Removal, page 2, Step 6 for photo. 4 Reinstall the two Allen cap screws holding the bottom plate of the elevator. See Elevator Removal, page 1, Step 5 for photo. 5 Re-install the nylon wire guide to the lower elevator plate, being careful to verify that the guide is centered from left to right in the slot in the syringe plate, and isn't rubbing on either side of the slot. Tie wrap any loose wires. See Elevator Removal, page 4, Step 9 for photo. 6 Reinstall the ground wire (removed in Elevator Removal, page 5, Step 12). Rework Instructions 17
Software Upgrading 1 Remove the right side panel. 2 Verify that you have written copies of all calibration and method data. 3 Remove the Archon software. Use either a small screwdriver or the screwdriver blade from a Swiss army knife if you lack an IC puller. Insert the screwdriver nearly all the way under the chip and then push the tool inward, forcing the top of the chip out. Hold the chip as you remove it. Take proper care to either ground yourself or touch the chassis before you touch the chip. 4 Install the new software that came with the upgrade kit, version 3.52 or greater. 5 Reset system data to defaults by hitting the red Pause/Stop key and holding zero. Hit Enter when prompted to hit any key. 6 If you have DOSARC, you may restore calibration and method data. You must auto-calibrate after data is restored because the water probe position has changed. 7 Refer to the Archon Manual, Section 6.4.2 Auto Calibration. NOTE After calibrating system with bar and pin, vial 22 position, water probe position and equilibrium block must be vertically trained. 18 Rework Instructions
Elevator Bounce Elimination Rework Instructions 0
Agilent Technologies Warranty The material contained in this document is provided as is, and is subject to being changed, without notice, in future editions. Further, to the maximum extent permitted by applicable law, Agilent disclaims all warranties, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or of any information contained herein. Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms, the warranty terms in the separate agreement shall control. Agilent Technologies, Inc. 2012 Printed in USA First edition, March 2012 Agilent Technologies, Inc. 2850 Centerville Road Wilmington, DE 19808-1610 USA *G7361-90845* G7361-90845