Bring these

• Flashlight
• Shop towels
• 5-gallon bucket
• Model-specific bottle-filler filter

1. 1Read the labelsRecord unit model, serial number, installed filter number and indicator message. Some systems use model-specific cartridges and reset methods; visually similar filters may not fit.
2. 2Check the scopeCompare the drinking fountain and bottle filler on the same unit, then nearby fixtures. A building-wide loss of flow is not usually solved by changing one filter.
3. 3Review service historyCheck installation date and usage records. If a supply interruption just occurred, follow the building water-restoration plan rather than immediately serving drinking water.
4. 4Service only within your trainingUse the exact manual for water isolation, any power isolation, cartridge replacement and flushing. Do not reuse a dirty cartridge or touch clean contact surfaces with contaminated gloves.
5. 5Confirm return to serviceCheck for leaks and normal operation, complete required flushing, then reset the indicator only as directed after the actual service. Log the cartridge and date.

Record the exact location, observed condition, time, actions taken, person contacted and follow-up owner. Keep unresolved items visible. A completed checklist means the check was performed; it does not automatically mean the equipment passed or is safe.