Dimension® EXL™ 200 IMT Troubleshooting

SIEMENS Healthineers IMT Troubleshooting Tips Recommended Routine Maintenance x Daily Roll up Standard bags – x Monthly Replace IMT pump tubing. – Run IMT System Clean (If more than 100 serum/plasma samples are run – per day, IMT system clean should be done every 15 days.) Replace monopump valve seal (Dimension® RxL Max® system only) – Basic Troubleshooting Roll Standard A & B bags daily to minimize condensate inside the bags - Pump alignment should be greater than 68 for RxL Max® and greater than - the low 70’s for the Xpand® Plus/EXL™; if not replace X tubing. Bleach the waste tubing. - Perform IMT system clean monthly, or every 15 days if more than 100 - serum/plasma samples are run daily. IMT system conditioning. - Refer to venipuncture tube manufacturer’s recommendations for sample - handing Unrestricted SIEMENS Healthineers IMT System Conditioning Procedure 1. From the Operating Menu, press: F7: Diagnostics F1: Electro/Mech F3: IMT F8: Advanced Diag 2. On the IMT Advanced Diagnostics screen, look at the IMT Rotary Valve field: NONE. Press the Enter key to change the field to SAMPLE. 3. Manually fill the IMT port with fresh serum or plasma. 4. Press F3: Pump Jog until you fill X0, X1, X2. 5. Make sure fluid is flowing. You will have to refill the port. 6. Let the fluid sit in the tubing for 5 minutes. 7. Calibrate the IMT system. QuikLYTE®: Dilution Check Troubleshooting Purpose The purpose of a dilution check is to check the accuracy of the 1:10 sample dilution ratio made by the monopump (RxL Max®) and the IMT diluent pump (Xpand® Plus/EXL™) on the IMT system. The dilution check fluid has a known concentration of Na and K. Five replicates of dilution check solution are processed. The recovered Na and K results are compared to the expected bottle value and a % bias is calculated. A bias within ±1% is acceptable. Unrestricted SIEMENS Healthineers ONLY Run a dilution check as part of the replacement procedure for the • QuikLYTE® sensor, the monopump valve seal (RxL Max®) and the piston lip seal (RxL Max®). ALWAYS Refrigerate bottles of Dilution Check solution. • Use the same bottle of Dilution Check solution when checking performance • across multiple instruments. Pour directly from the Dilution Check solution bottle. • NEVER Run a dilution check on a sensor that already has been used to run samples. • Use Dilution Check solution from a bottle that has less than one inch of • fluid remaining. Rerun a dilution check using the same sample cup. Always pour a fresh cup. • Resolving a Failed Dilution Check A dilution check that is not acceptable generates a printout with the status of FAIL in reverse print. A dilution check will fail if: the bias is greater than ±1% • the standard deviation (SD) is >1.4 for Na or >0.04 for K. • the dilution check did not process completely or properly • If both the bias and SD are unacceptable, resolve the SD problem first. Unrestricted SIEMENS Healthineers Follow the appropriate procedure below to correct a failed dilution check. Dilution Check Results/Actions Bias <1% No action is needed in this case, since the average bias for Na+ and K+ is within the acceptable range. In fact, repeatedly pressing F1: Accept Bias when the bias is <1% eventually will cause more day-to-day variation with LYTES results. Bias >1% 1. Proceed to F6: Review DILCHK screen. 2. Press F1: Correct Bias. At the prompt "Do you want the dilution calibration factor to be corrected? (y/n)," type y for yes. If the Bias field corrects to 0%, use the Electrolyte Results log to record both • the FAILED and the PASSED dilution check results from their printouts, then run QC for electrolytes. If the software will not let you correct the bias, contact the Technical • Solutions Center. "The individual bias results for Na and K are different by >3%." Replace the Sample Diluent bottle. Pour a fresh cup of Dilution Check solution to rerun Dilchk. Unrestricted SIEMENS Healthineers Unacceptable Standard Deviation (SD) for Na/K 1. Pour fresh Dilution Check solution into a new sample cup. Rerun the Condition and Dilution Check routine. 2. Display the Fluids Prime/Pump Alignment screen and check the IMT pumping rate field. If the rate is outside the nominal range (see the Pump Alignment Chart earlier in this chapter), replace the X tubing inside the IMT pump. 3. Perform all IMT probe alignments for RxL Max® and the photometric sampler alignments to the IMT port and segment for Xpand® Plus/EXL™. 4. If the first result for Na and K is always the highest reading, causing the SD to fail: a. Replace probe tubing. If it was just replaced, could have shaved a sliver of tubing off (RxL Max® only). b. Check for excess Krytox® on the X seal of the monopump (RxL Max®). 5. If the first result for Na and K is always the lowest reading, causing the SD to fail, replace the probe tubing - it is probably too loose on top of the probe (RxL Max®). 6. Inspect IMT diluent syringe (Xpand® Plus/EXL™ systems). Unrestricted