Must-Know Tips for Using and Maintaining Your Filling Machine

What Should I Pay Attention To When Filling Viscous Liquids?

1. Choose the Right Filling Machine - Piston pump or rotor pump filling machine  are usually best for high-viscosity liquids.
2. Control Temperature - Thick liquids usually flow more easily when they’re a little warm. Warm up your product a bit so it fills more smoothly—honey and cream work best above 30°C.
3. Regular Cleaning - Viscous liquids like honey or cream can stick around and cause clogs.
4. Add Stirring Device - Keep viscous materials flowing to facilitate pump suction or piston suction.

What Should I Do If The Filling Machine Cannot Fill?

1. Check the Power & Air Supply - Check that the machine’s getting stable power. When you start it, make sure the air compressor is hooked up and holding steady at 0.4–0.6 MPa.  No air → No piston movement → No filling.
2. Check the Emergency Stop Or Safety Interlock - Ensure the E-stop isn’t engaged. Some models won’t fill if the safety door or sensor cover is open.
3. Check the Material Feed - Is there enough liquid/paste/powder in the hopper or tank? Many machines are equipped with low-level sensors that prevent filling when the material level is too low.
4. Check the Inlet Valve / Feeding Line - Check for blockages, folded hoses, or air bubbles (for liquid type). If filling a thick material, check that the heating element (if equipped) is turned on and that the material is flowing.

What is The Service Life Of The Filling Machine?

The service life of the filling machine can normally reach 6-12 years, which also depends on the use environment and maintenance of the machine.

How To Maintain Filling Machine & Extend Its Service Life？

1. Clean nozzles and hoses after each shift.
2. Lubricate moving parts monthly (or as recommended).
3. Replace seals, O-rings, and hoses periodically.
4. Check sensors, solenoid valves, and wiring annually.
5. Calibrate dosing accuracy every 3–6 months.

What is The Reason For The Unstable Filling Volume Of The Filling Machine?

1. Checking Your Filling Nozzles And Valves - It’s primary liquid dispensing mechanism in filling machines. These precision components control product flow through carefully calibrated opening and timing. Nozzles often experience product residue buildup, which alters flow patterns and affects filling accuracy. The valve's sealing surface can also wear, causing leaks or irregular dispensing patterns.
2. Check If Air Bubbles Are Visible In The Hose - Air bubbles reduce the actual volume filled, bleed the line and make sure the suction pipe is fully submerged.
3. Check The Air Leaks In Pneumatic Lines - Air pressure fluctuations in pneumatic machines can cause inconsistent movement of the air cylinder and lead to inconsistent flow rates. 
4. You Are Filling a Paste? Better Check it Out - Inconsistent temperatures in viscous liquids can cause hot materials to flow faster than cold materials, leading to sedimentation or separation. Maintain a constant temperature and use an agitator to ensure uniform mixing of the materials.

What Are The Wearing Parts of The Filling Machine?

Parts that are subject to friction, pressure or come into contact with materials, such as sealing rings, pump components, gaskets , valves, and filling nozzles etc, need to be regularly inspected, maintained, or replaced to ensure stable operation and accurate filling. And choosing a Reliable Supplier can ensure a stable supply of machine parts.

Can One Filling Machine Fill Bottles of Different Sizes?

As long as the machine lets you adjust the filling settings and has flexible bottle positioning. Just make sure it has Adjustable Filling Volume, Filling Head Height, and Conveyor Belt Width.