1. Common Failures Overview

2. Failure: Mix Not Freezing / Poor Hardness

User-Level Checks

– Check Ingredient Ratio:** Ensure that the proportions of ingredients used in the mix are accurate and follow the recommended guidelines.

– Ensure Pre-Cooling is ON:** Verify that the pre-cooling function is activated to achieve the optimal temperature before the mixing process begins.

– Confirm Ventilation Around Machine:** Make sure there is adequate airflow around the machine to prevent overheating.

– Avoid High Ambient Temperature:** Keep the machine in an environment where the surrounding temperature is not excessively high, as this can affect the freezing process.

Engineer Checks

– Condenser Cleaning: Thoroughly clean the condenser to remove any dust or debris that might be hindering its performance.

– Evaporator Frosting Pattern: Inspect the evaporator for any irregular frosting patterns, which could indicate underlying issues.

– Refrigerant Pressure / Leak Test: Conduct a pressure test and check for any leaks in the refrigerant system.

– Hardness Sensor Output: Verify the accuracy of the hardness sensor readings to ensure it is functioning correctly.

-Compressor Current:Measure the current flowing through the compressor to ensure it is within the specified range.

3. Failure: Mixer Not Rotating

User-Level Checks

– Remove Foreign Objects: Check for and remove any foreign objects that might be obstructing the mixer’s movement.

– Mix Too Thick: Determine if the mix is too thick, which could cause the mixer to struggle or stop rotating.

– Let Motor Cool 10 Minutes: Allow the motor to cool down for at least 10 minutes to prevent overheating and potential burnout.

Engineer Checks

-Test Motor and Capacitor: Perform a comprehensive test on the motor and capacitor to ensure they are functioning properly.

– Inspect Beater Shaft: Examine the beater shaft for any signs of damage or obstruction that could prevent rotation.

– PCB Output Test: Check the output signals from the PCB (Printed Circuit Board) to ensure they are correctly controlling the mixer.

4. Failure: No Cooling / Temperature High

User Checks

-Condenser Dust: Inspect the condenser for accumulated dust and clean it if necessary.

– Clearance: Ensure there is sufficient clearance around the machine for proper airflow.

– Room Temperature: Check the ambient room temperature to ensure it is within the recommended range for optimal machine performance.

Engineer Checks

– Leak Test: Conduct a thorough leak test to identify any refrigerant leaks.

– Compressor Current: Measure the compressor current to ensure it is operating within the normal range.

– System Pressure: Check the overall system pressure to identify any discrepancies.

-Blocked Capillary Tube: Inspect the capillary tube for any blockages that could impede refrigerant flow