How DEGONG Ensures The Best Fermentation Environment

1. Introduction: Why Maintenance Matters in Brewing

Fermentation is where wort becomes beer — the stage that defines its flavor, aroma, and alcohol content. The fermentation tank is therefore the core equipment of every brewery.

Even the most advanced stainless steel fermenter requires regular maintenance to ensure stable operation, yeast vitality, and product consistency.

As a global manufacturer of brewery equipment, DEGONG has engineered each fermentation tank for long-term durability, hygiene, and easy maintenance. However, daily care still plays a crucial role in maintaining the best brewing conditions.

2. What Does “Daily Maintenance” Really Mean?

Daily maintenance doesn’t only refer to cleaning — it’s about monitoring, inspection, and prevention. A well-maintained fermentation environment helps avoid production downtime, beer contamination, and flavor deviation.

The three key goals are:

• Keep yeast healthy and active.

• Maintain consistent temperature and pressure.

• Prevent microbial contamination and oxygen exposure.

3. Daily Maintenance Checklist for Fermentation Tanks

3.1 Cleaning & Sanitization

Cleanliness is the foundation of quality beer.

Even small residues can promote bacterial growth or alter beer flavor.

DEGONG fermentation tanks are designed with CIP (Clean-In-Place) systems, enabling full internal cleaning without disassembly.

Recommended Steps:

• Rinse the tank with warm water (40–50 °C) to remove residual beer and yeast.

• Circulate alkaline cleaning solution (2–3% NaOH or similar) for 15–20 minutes.

• Rinse thoroughly with clean water.

• Apply acid cleaning (1% nitric or phosphoric acid) to dissolve mineral buildup.

• Finish with sanitizing step using peracetic acid or steam sterilization.

• Inspect the CIP spray ball to ensure even coverage.

3.2 Temperature & Cooling System Management

Temperature affects fermentation rate, yeast metabolism, and flavor formation.

Daily checks should confirm:

• Glycol chiller and dimple jacket are functioning properly.

• Temperature sensors read accurately (calibration every 3 months recommended).

• No frost or leakage in the glycol line.

Typical Temperature Ranges:

Beer Type	Optimal Fermentation Temperature
Ale	18–22 °C
Lager	8–14 °C
Wheat Beer	16–20 °C

3.3 Pressure, Valves & Safety Devices

Overpressure or underpressure can damage the tank or spoil the beer.

Key items to inspect daily:

• PRV (Pressure Relief Valve) operation

• CO₂ outlet and exhaust line for blockage

• Manway gaskets for wear or cracking

• Pressure gauges for stable readings

DEGONG fermenters are equipped with pressure-rated fittings and safety systems to ensure both operator safety and product quality.

3.4 Yeast Management

Healthy yeast means healthy beer.

During fermentation:

• Check yeast activity visually or via gravity readings.

• Remove sediment or spent yeast from the cone using the racking arm.

• Maintain sanitary conditions when collecting yeast for reuse.

DEGONG’s conical bottom design (60°) allows easy yeast separation and minimizes beer loss — ideal for professional breweries that reuse yeast strains multiple times.

3.5 Oxygen Control & Carbonation

After initial oxygenation, oxygen should be avoided.

Excessive oxygen leads to oxidation, affecting color and flavor stability.

Ensure:

• All fittings and hoses are airtight.

• Use CO₂ purging before transferring beer between tanks.

• Carbonation stones are cleaned and sterilized regularly.

DEGONG’s closed fermentation design minimizes oxygen ingress and supports natural carbonation control.

3.6 External & Structural Inspection

Don’t neglect the outside of your fermenter!

• Wipe stainless steel surfaces daily to prevent dust and corrosion.

• Inspect insulation for damage or condensation.

• Check support legs, clamps, and pipe connections for tightness.

• Examine control panels, sensors, and cables for wear.

Routine external care preserves equipment aesthetics and extends service life.

4. Weekly and Monthly Deep Maintenance

In addition to daily tasks, plan periodic maintenance:

Weekly:

• Verify calibration of temperature and pressure instruments.

• Test safety valves.

• Drain glycol system to remove trapped air.

Monthly:

• Inspect welding seams for cracks or discoloration.

• Lubricate valves and mechanical seals.

• Perform complete CIP system audit.

DEGONG offers scheduled maintenance programs and remote support to assist breweries in maintaining top performance.

5. Conclusion: Good Maintenance, Great Beer

A well-maintained fermentation tank ensures that yeast thrives, flavors develop correctly, and every batch tastes just as intended.

With DEGONG beer fermentation tanks, maintenance is not a burden — it’s part of your brewing excellence.

When your equipment works perfectly, you can focus on what truly matters: brewing better beer.