The preventive maintenance should include the following, at a minimum: ___2.9.1 LC-MS Triplequad preventive maintenance ___2.9.2 Inspection: Perform general inspection of the complete system ___2.9.3 System cleaning: Remove dust from fans and vent covers ___2.9.4 LC Pump Maintenance: Replace pump head seal ___2.9.5 LC Pump Maintenance: Replace purge valve seal ___2.9.6 LC Pump Maintenance: Replace filter assembly frits ___2.9.7 LC Pump Maintenance: Replace outlets ___2.9.8 LC Pump Maintenance: Replace outer caps ___2.9.9 LC Pump Maintenance: Replace sieves for outlet valves ___2.9.10 LC Pump Maintenance: Replace active inlet valve cartridge ___2.9.11 LC Pump Maintenance: Replace sapphire pistons ___2.9.12 LC Pump Maintenance: Replace plunger seals ___2.9.13 LC Pump Maintenance: Replace glass solvent inlet filters ___2.9.14 LC Pump Maintenance: Replace support seal assemblies ___2.9.15 Autosampler Maintenance: Replace rotor seal and needle seat assembly ___2.9.16 Autosampler Maintenance: Replace stator face assembly ___2.9.17 Autosampler Maintenance: Replace isolation seal ___2.9.18 Autosampler Maintenance: Clean and inspect sampler ___2.9.19 Autosampler Maintenance: Perform pressure test ___2.9.20 Column Maintenance: Replace column switching valve rotor seal ___2.9.21 Column Maintenance: Perform pressure test ___2.9.22 Valve Maintenance: Replace rotor seal ___2.9.23 Valve Maintenance: Inspect valve fittings and capillaries for leaks ___2.9.24 Detector Maintenance: Verify performance of detector ___2.9.25 Source Cleaning: Remove and clean the Mass Spec ion source ___2.9.26 Fraction Collector Maintenance: Replace tubing ___2.9.27 Fraction Collector Maintenance: Clean and inspect ALS thermostat ___2.9.28 Vacuum System Maintenance: Inspect vacuum pumps ___2.9.29 Vacuum System Maintenance: Replace mechanical pump oil ___2.9.30 Vacuum System Verification: Establish vacuum and verify pressure ___2.9.31 Vacuum System Verification: Perform system auto-tune ___2.9.32 HPLC Verification: Prime system and run test injection ___2.9.33 Documentation: Provide customer with a detailed report on system as found, and the state of the system once the preventive maintenance is complete