How to Use a Vacuum Tumbler

1. Pre-Operation Preparation

1.1 Equipment Inspection

• Check the power supply: ensure 3~380V three-phase power is properly connected, grounded safely, and no electrical leakage.
• Test run the machine empty: check forward/reverse rotation, variable frequency speed, vacuum pump, sealing ring, and door lock for normal operation.
• Verify vacuum pump oil level: keep oil at the standard level and replace if emulsified or dirty.
• Clean and sanitize the drum interior, door, and discharge port to remove meat residues and impurities.

1.2 Raw Material Preparation

• Thaw meat to 0–4°C, remove bones, tendons, and bruises.
• Prepare marinade (brine, additives, seasonings) and fully dissolve it, keeping temperature low.
• Set processing parameters according to product requirements.

2. Standard Operating Procedures

Step 1: Loading

• Open the drum door, put meat and marinade into the drum.
• Do NOT overload: GR-1200 max load is 500kg (straight mouth) / 600kg (offset mouth).
• Close and lock the door tightly to ensure airtightness.

Step 2: Setting Parameters and Starting

• Vacuum degree: -80 ~ -85 kPa
• Tumbling speed: 4–11 rpm (variable frequency)
• Cycle mode: forward rotation, pause, reverse rotation (e.g., 10min on / 5min off)
• Total working time: 1–4 hours depending on products

Step 3: Monitoring During Operation

• Observe stable vacuum, smooth rotation, normal current (around 10A), and no abnormal noise.
• Do NOT open the door or reach into the drum while running.
• In case of air leakage, abnormal sound, or power trip, press emergency stop immediately.

Step 4: Stopping and Unloading

• After the program finishes, the machine stops automatically.
• Open the vacuum release valve to restore normal pressure.
• Unlock the door, run the drum in reverse to discharge marinated meat.

Step 5: Cleaning and Maintenance

• Rinse the drum with warm water and food-grade detergent immediately after use.
• Clean the seal, discharge port, and pipes; sanitize if needed.
• Wipe the machine dry and check the vacuum pump and parts for damage.

3. Typical Processing Parameters

• Ham / Bacon: 2–4 hours, 6–8 rpm, cycle 10min on / 5min off
• Steak / Chicken Chop: 1–2 hours, 8–10 rpm, cycle 5min on / 3min off
• Sausage meat: 1.5–3 hours, 4–6 rpm, continuous tumbling with intervals

4. Safety Rules

• Only trained personnel can operate the machine.
• Keep hands, hair, and loose clothing away from rotating parts.
• Disconnect power before maintenance or cleaning.
• Do not strike the drum or force open the door.
• Maintain hygiene standards to avoid meat spoilage.

5. Common Troubleshooting

• Low vacuum: damaged seal, air leakage, or faulty vacuum pump → replace seal or repair pump
• Uneven marination: overloading, insufficient time → reduce load, extend time
• Too much water loss: over-tumbling or high temperature → shorten time, keep meat cold
• Vibration or noise: unbalanced loading, loose bolts → rearrange material, fasten base bolts