Maintain and restore pumps, gauges, compressors, power supplies, heater assemblies, controls, instrumentation, and related mechanical and electrical systems through preventive and corrective maintenance, troubleshooting, equipment recovery, inspections, disciplined shift handoff, and documented CMMS closeout. Comply with LOTO/LOTOTO, electrical safety, confined-space, respirator, chemical-handling, cleanroom, permit, PPE, machine-guarding, and other applicable site and regulatory requirements; stop and escalate work when controls are unclear or conditions are unsafe.