5800 Refrigerated Sampler Service Guide - Isco

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5800 Refrigerated Sampler Service Guide Section 5 Electrical Troubleshooting and Diagnostics If the sampler displays PUMP FAILURE or BAD ON/OFF RATIO, turn off the sampler by pressing the Off button. Then, refer to Section 1.4.1 and perform a pump inspection. Clear any obstructions from the pump housing and pump tube, verify that the pump rotor turns, then perform the TEST PUMP diagnostic again. If you don’t find obstructions to pump rotor movement but the pump still fails, contact your authorized Isco service facility or the Teledyne Isco factory. 5.1.6 Test Distributor The TEST DISTRIBUTOR diagnostic calibrates the sampler’s distributor alignment. You specify the bottle position to which the sampler should move the arm. You can then verify the correct positioning of the arm. Note This test is not applicable for samplers configured for operation with a single 20 liter bottle. To run the test: 1. Remove the discharge tube from the distributor arm. This removes tension from the arm for better visual verification. C A B Figure 5-1 Distributor arm (A), discharge tube (B), and stop (C) SELECT DIAG: () TEST DISTRIBUTOR 2. Go to the RUN DIAGNOSTICS menu as usual and select the TEST DISTRIBUTOR option. 3. Open the refrigerated compartment and manually move the distributor arm to its “home” position against the front of the stop on the distributor module (Figure 5-2). 5-4
5800 Refrigerated Sampler Service Guide Section 5 Electrical Troubleshooting and Diagnostics Figure 5-2 Distributor arm positioning, discharge tube removed GO TO BOTTLE ___ (1-max) 4. Press the Calibrate button. This saves the current distributor arm position as “home.” Note The arm must be at the stop when the Calibrate button is pressed. The calibrate function always saves the arm’s current position as "home." 5. Enter the bottle number to which the sampler should move the arm. Press Enter and the distributor will run. MOVING TO BOTTLE ___ NOW AT BOTTLE ___ GO TO BOTTLE ___ (1-max) 6. The sampler reports the new distributor arm position. Verify that the arm is aligned over the correct bottle. 7. The sampler then asks for the next bottle position. Enter a bottle number and press Enter, or press the Stop button to exit the test. If the sampler displays DISTRIBUTOR JAMMED, DISTRIBUTOR ERROR, SLOT CODE ERROR, DISK ERROR, or BELT TOO LOOSE, verify that the arm movement is not obstructed. Clear any obstructions such as bottles not fully seated in the rack or an incorrectly installed discharge tube, then perform the TEST DIS- TRIBUTOR diagnostic again from step 1. If you don’t find obstructions to the distributor arm movement, contact your authorized Isco service facility or the Teledyne Isco factory. 5-5
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5800 Refrigerated Sampler Service Guide - Isco

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