Most labs have a battered three-ring binder sitting on a shelf near the waste container. Keep it there. While the digital PDF (often found on the Roche DiaLog portal) is searchable, the physical manual has laminated fold-out that are impossible to read on a screen. When you have a fluid pressure issue (error 3120-3190), looking at the actual paper map of tubes is faster than zooming on a tablet.
for external equipment cleaning; organic solutions can damage cuvettes, tubing, and plastic components. Rack Safety Service Manual Cobas Integra 400 Plus