Common Operational Problems and Solutions for Batch Fryer

1. Uneven Frying / Uneven Color of Finished Snacks

• Raw materials accumulate locally, no uniform stirring
• Oil temperature difference in different tank areas
• Overloading raw materials at one time
• Unreasonable feeding sequence

• Turn on automatic stirring device before frying; adjust stirring speed properly
• Preheat oil fully to set temperature, ensure consistent heating
• Control feeding capacity strictly per machine rated loading
• Spread materials evenly when feeding, avoid piling up

2. Excessive Oil Consumption & High Oil Waste

• Too high frying temperature leads to oil oxidation & volatilization
• Residue sediment accumulates and deteriorates frying oil
• No oil filtering system
• Wet raw materials enter the oil tank

• Adopt low-temperature constant frying mode to reduce oil loss
• Timely filter food residue and clean oil sludge daily
• Equip circulating oil filter and oil purification device
• Dry beans, peanuts and pellets before frying to reduce water content

3. Oil Foaming & Overflow During Frying

• High moisture content of raw materials
• Excessive residue mixed in oil
• Oil level is too high beyond standard range
• Rapid temperature rise in short time

• Reduce material moisture via pre-drying treatment
• Regularly clean waste residue and replace deteriorated oil
• Keep oil level within the marked safe range
• Heat up step by step, avoid rapid high-temperature heating

4. Low Frying Efficiency & Slow Heating

• Heating pipe scaling or carbon deposition
• Heating system power insufficient
• Poor heat preservation of fryer body
• Frequent opening of the tank cover leading to heat loss

• Regularly clean heating tubes to remove oil dirt and scale
• Check heating elements and replace damaged parts timely
• Maintain equipment heat preservation layer
• Reduce frequent opening of the cover during working

5. Product Burnt / Bitter Taste

• Frying time too long or temperature too high
• Dead corner without stirring causes local burning
• Old & oxidized frying oil
• Uncontrolled timing system

• Set accurate temperature and time according to different snacks (peanuts, beans, pellets)
• Optimize stirring structure to eliminate stirring dead corners
• Replace frying oil periodically; add antioxidant for long-term use
• Calibrate temperature control and timing controller regularly

6. Equipment Oil Leakage & Oil Tank Sealing Failure

• Gaskets and seals aging & damaged
• Loose connection of pipeline joints
• Tank welding seam corrosion and oil seepage

• Replace high-temperature resistant rubber gaskets regularly
• Fasten pipeline connectors before each shift
• Inspect welding seams routinely, do anti-corrosion treatment

7. Electrical Failure / Temperature Control Inaccuracy

• Temperature sensor failure or displacement
• Circuit aging, short circuit caused by oil pollution
• Thermostat failure leading to temperature out of control

• Calibrate or replace temperature probe regularly
• Keep electric box dry and clean away from oil stain
• Use original brand thermostat and electrical accessories

8. Large Residue Residue, Difficult Cleaning

• No slag scraping mechanism
• Oil dirt carbonizes after long-time high temperature
• Complex internal structure, dead corners hard to clean

• Equip automatic slag scraping and discharging system
• Clean the fryer while the oil is warm after daily shutdown
• Adopt fully welded seamless tank design for easy washing