​Solutions to Common Edible Oil Filling Machine Failures

> > >
​Solutions to Common Edible Oil Filling Machine Failures
2026-05-06

Solutions to Common Edible Oil Filling Machine Failures

If you run an edible oil packaging line, you know how bad it gets when an edible oil filling machine stops working. Small problems can stop production for a long time and waste a lot of raw materials. This article lists common failures of edible oil filling machines. It gives simple and clear solutions. These help you start production fast and keep the line running well.

an automatic edible oil filling machine

Inaccurate Filling Volume

Some bottles get too much oil and others stay almost empty. This uneven fill hurts product quality. It can also create legal problems with label rules. The fault happens at random times. You cannot easily guess which bottle will have less oil. Good filling accuracy helps keep customers happy and cuts down on material waste.
1. Causes
• Air bubbles trapped inside the oil supply pipeline
• Filling valves partially blocked by solidified oil residue
• Worn piston seals causing internal pressure leakage
2. Solutions
• Tighten all inlet hose connectors to prevent air ingress
• Thoroughly clean the filling nozzles at the end of every production shift
• Timely replace deformed, aged and worn rubber seals
filling head of filling machine
You should check the pipelines first when you fix problems. Air gets in the pipe and takes up space for the oil. This leads to under-filling. The machine thinks it pumps liquid but it sends air instead. After many months of hard work, the piston seals wear out. Loose seals stop the machine from controlling the exact oil amount in each bottle.

Nozzle Dripping and Leakage

Oil drips from the nozzle after each fill. It makes the conveyor belt and bottles dirty. The packages look bad. The floor gets slippery and this creates safety risks for workers. Workers spend extra time cleaning and this raises labor costs.
1. Causes
• Aged or damaged O-rings inside the nozzle assembly
• Vacuum suck-back pressure set too low
• Dents or physical damage on the nozzle tip
2. Solutions
• Install brand-new oil-resistant O-rings
• Increase vacuum suck-back pressure to draw away residual oil after filling
• Replace the nozzle directly if its edge is worn and uneven
Nozzle leaks cause more than cleaning work. They waste oil and cut profits directly. Oil on the belt makes bottles slide or fall during capping. On fast lines, you must keep nozzles clean and free of drips. Do not ignore small drips because the problem gets worse.

Frequent Bottle Jamming on the Production Line

Bottles fall over or get stuck at the filling station entrance. This triggers a full stop and needs manual reset. The main reason is wrong speed match between the conveyor and the filling heads of the edible oil filling machine. These sudden stops cut daily output a lot.
1. Causes
• Guide rails set too wide for the bottle size
• Out-of-sync operation between the timing screw and star wheel
• Lightweight empty bottles wobble unstably on the conveyor
2. Solutions
• Adjust the guide rail width to ensure bottles move smoothly with proper clearance
• Recalibrate the timing belt to perfectly match the operation rhythm of filling heads
• Reduce conveyor speed appropriately for lightweight plastic bottles
the equipment is filling edible oil
Bottle jamming blocks high-efficiency work the most. Every stop loses output that you cannot get back. Most jams come from bad connections between stations. Bottles that bounce at these points often fall when they reach the filling area. Keep the path straight, smooth, and clear of obstacles.

Excessive Foaming During Filling

A lot of foam appears when oil goes into the bottles. The foam takes up space and oil can spill out. Workers wait for the foam to go down before they cap the bottles. This stops the machine from running at full speed and lowers overall efficiency.
1. Causes
• Filling speed set too high for the bottle type
• Filling nozzle not inserted deep enough into the bottle
• Excess pump pressure mismatched with oil viscosity
2. Solutions
• Lower the filling flow rate on the control panel
• Adopt bottom-up filling technology to avoid oil splashing and impact
• Reduce pump pressure to achieve gentle and steady oil delivery
Foam is air mixed into the oil during filling. It happens when oil hits the bottle bottom too fast. This is like pouring a drink quickly and making bubbles. Edible oil is thick so the foam goes away slowly. It causes wrong fill weights and dirty bottles that need extra cleaning.

Unexpected Motor Overheating

The main motor on the edible oil filling machine gets very hot. In bad cases, the machine stops by itself to prevent fire or big damage. You may smell burning or hear strange noises from the cabinet. Overheating shows the machine works too hard and you must fix it right away.
1. Causes
• Mechanical jamming leading to motor overloaded operation
• Motor cooling fan blocked by dust and oil dirt
• Excessively fluctuating or low factory power supply voltage
2. Solutions
• Inspect gear and chain transmission parts and remove jammed foreign objects
• Clean dust on the motor housing with compressed air every week
• Install a voltage stabilizer to ensure stable power supply
capping equipment for filling lines
Motor overheating acts as an important warning. Motors can run for long hours but they need good air flow to cool down. Oily dust on the cooling parts traps heat. This makes wires age faster and can burn the motor. Replacing a motor costs a lot and takes time. Regular care prevents this.

Touchscreen and PLC Communication Failure

The control screen freezes, crashes, or shows wrong error codes. This stops the machine. Sometimes it does not answer touchscreen commands at all. The outside parts look fine but the control system fails. Electrical problems are hard to find compared to mechanical ones.
1. Causes
• Loose wiring terminals inside the electrical cabinet
• Static electricity accumulation and poor equipment grounding
• Logic program glitches in the control system software
2. Solutions
• Tighten all screw terminals inside the electrical cabinet
• Ensure reliable equipment connection to a grounding rod
• Perform a full power hard reset by cutting off the main power supply
Most electrical problems start from simple things like loose wires. The machine shakes all day during work. Over time, this shaking loosens connections between the screen and controller. It creates random errors. Checking and tightening the wires often fixes it fast.

Poor Capping and Sealing Quality

Caps end up too loose or too tight and damage the threads. Some bottles go through the edible oil filling line with no cap at all. Leaks and damage happen during shipping and customers complain. Bad seals ruin the whole packaging step and need quick fixes.
1. Causes
• Improper pressure parameter settings on the capping head
• Misaligned cap feeding angle of the cap sorter
• Slipping bottle grippers during the capping and torque process
2. Solutions
• Adjust the electromagnetic clutch to set standard capping torque
• Clean the cap conveying track to ensure smooth cap feeding
• Replace anti-slip rubber gaskets inside bottle grippers
the capping machine is sealing the oil bottles.
Capping is the last main step and problems often appear here. If the machine does not hold bottles tight, they spin with the caps and do not seal well. Too much pressure can crack bottle necks. Too little pressure leaves them loose and leaking. You need to balance pressure and torque carefully.

Conveyor Speed and Synchronization Failure

The conveyor moves too fast or too slow compared to the filling rhythm. Bottles do not stop exactly under the nozzles. Oil spills on the belt instead of the bottles. This creates a messy area and wastes expensive materials fast. Bad timing stops production and causes big money losses.
1. Causes
• Incorrect parameter settings on the motor frequency inverter
• Conveyor belt slipping on the driving pulley
• Dirty bottle induction sensors causing false detection or missed detection
2. Solutions
• Reset operating speed parameters in the inverter menu
• Tighten the conveyor belt or replace the worn driving pulley
• Wipe optical induction sensors with a clean dry cloth
Good timing keeps the whole automated line stable. A problem at one station can stop everything. Most conveyor issues come from wrong belt tension or bad sensors. Sensors with oil and dust send wrong signals or miss bottles. Cleaning sensors every day is an easy way to avoid timing problems.

Stable production depends on regular checks and careful management of every part. Most failures of edible oil filling machines can be stopped if you find small risks early. Whether you see light nozzle drips or the motor getting warm, quick action controls costs well. Active maintenance gives the best base for steady work in packaging.
Routine care protects the factory’s future and prevents surprise stops. Use the fix and care steps in this guide to cut downtime. Keep the equipment reliable all year. Good maintenance brings better quality, happier customers, and higher profits. Train your operators on these common fixes so the line stays efficient and steady for a long time.
Previous:
​Guide to Picking Great Shampoo Filling Machine
Next:
Top 10 Global Sauce Filling Machine Manufacturers
Product Catalog
Products