Guides
A Taproom Manager's Guide to Draft Line Cleaning Schedules
A taproom draft line cleaning schedule sets the interval, sequence, and pass/fail checks for clean beer lines. Use a two-week default and a documented cleaning log.
What to take away
- Clean most direct-draw taproom draft lines every two weeks. Clean long-draw or slow-moving lines every week.
- Follow a fixed orderisolate, flush, alkaline clean, acid rinse, final flush, recouple.
- A line passes when the final rinse has no off odor, runs clear, and matches the source water pH.
- Record each cleaning with date, line number, chemical lot, and final check result.
What you need before starting
Food safety planning treats line sanitation as a preventive control, and the FSMA preventive controls for human food framework names sanitation controls for beverage dispensing. Gather supplies before the taproom opens or after the last pour. Do not start a line clean with a partial chemical kit.
- A dedicated cleaning bucket or recirculating pump sized for the number of lines.
- Alkaline line cleaner at the concentration shown on the container.
- Acid line cleaner or phosphoric acid blend for mineral scale.
- A jumper hose with beer nut fittings to connect the line to the pump.
- Nitrile gloves, safety glasses, and an apron.
Put the same items on your stock checklist so a short week does not leave you without cleaner.
The sequence
- Isolate the lineremove the keg coupler, attach the cleaning jumper, and open the faucet to drain any beer left in the line.
- Flush with cold water for five minutes or until the water runs clear. Use a recirculating pump or a hand pump system.
- Recirculate alkaline cleaner at the label concentration for 15 minutes at room temperature. For long-draw lines, increase to 20 minutes.
- Rinse with cold water until the pH of the rinse water matches the tap water source.
- Recirculate acid cleaner for 10 minutes to remove beer stone and mineral deposits.
- Final rinse with cold water for five minutes, then recouple the keg and pour off the first few ounces before serving.
Train every new bartender on this sequence using the same sign-off used in your training checklist. A written sequence prevents a bartender from skipping the acid rinse on a busy close.
Where judgement replaces the recipe
Two weeks works for most direct-draw systems. Switch to weekly when a line pours under two kegs a week, the faucet faces sunlight, or the beer has residual sugar.
High-gravity stouts, fruit beers, and hazy IPAs leave more protein and sugar in lines. Clean weekly if lines run over 25 feet from keg to faucet. In busy summer months, check each day's first pour for off flavors and adjust the schedule before a customer complains.
The draught beer reference notes that long-draw systems, often found in larger taprooms, need more frequent cleaning because beer sits longer in the line.
Example two-week cleaning intervals
| Line type | Cleaning interval | Notes |
|---|---|---|
| Direct-draw, active | Every 2 weeks | Standard pour volume |
| Direct-draw, slow | Weekly | Fewer than 2 kegs per week |
| Long-draw, 25+ feet | Weekly | Beer sits longer |
| Outdoor or seasonal faucet | Weekly | Sunlight and heat |
Seasonal staffing changes can move line cleaning to a less experienced closer. Plan the handoff before the fall rush using a seasonal staffing schedule.
How to tell it is right
Use three checks after the final rinse. Smell the faucet spout: a clean line has no vinegar, butter, or wet-paper odor. Run water into a clear glass and hold it to the light: it should be colorless with no visible particles.
Measure the final rinse water pH with a basic test strip or meter; it should be within 0.2 pH units of the tap water source. If any check fails, repeat the rinse and test again.
A line that looks clean but smells sour is not clean. The smell test catches biofilm that visual inspection misses.
Fixing it when it is not
A line that still smells of vinegar or diacetyl after standard cleaning is the common failure. Run a second full alkaline cycle at the upper end of the manufacturer's concentration, then a 30-minute static soak.
If the smell persists, replace the jumper line, beer nut, and faucet gasket; biofilm hides in their crevices. Do not pour a stronger chemical through the line without checking the tubing rating.
OSHA safety rules for chemical handling in small taprooms cover the same PPE and storage shown in the OSHA safety checklist. Keep the chemical log next to that checklist.
