The full temperature shaker is a precision equipment used in laboratory experiments for microbial culture, cell culture, biochemical reactions, etc. Its core function is to provide a constant temperature environment and controllable oscillation conditions. To ensure stable instrument performance and extend its service life, scientific maintenance should be carried out from multiple aspects such as environmental management, daily maintenance, regular calibration, mechanical maintenance, and operating standards. The following are detailed maintenance points:

1、 Environmental control and placement requirements

1. Temperature and humidity control

-Placed in a dry and well ventilated place, it is recommended to maintain an ambient temperature of 15-25 ℃ and a relative humidity of ≤ 60% to avoid condensation water corroding the circuit.

-Stay away from heat sources (such as ovens, heaters) and direct sunlight to prevent local overheating from affecting temperature control accuracy.

-Equipped with independent air conditioning or dehumidifier, strengthen humidity monitoring during rainy season.

2. Stable placement and shock absorption

-Place the instrument on a stable experimental platform, adjust the horizontal foot to make it horizontal (which can be detected with a level), and avoid resonance or displacement during oscillation.

-Stay away from high-frequency vibration equipment (such as centrifuges and vibrators) and install shock absorbers if necessary.

3. Power supply and grounding

-Use independent sockets and equip with leakage protection switches to avoid sharing lines with other high-power devices.

-Ensure good grounding to prevent static electricity accumulation or leakage risks.

2、 Key points of daily maintenance

1. Cleaning and dust prevention

-Shell cleaning: Wipe the surface of the chassis with a dry cloth daily. For stubborn stains, use a neutral cleaning agent (such as diluted alcohol) to gently wipe, and do not use corrosive solvents (such as acetone).

-Cleaning of the chamber: After each experiment, remove residual samples, water stains, or culture medium from the chamber, clean the gaps with a soft bristled brush, and disinfect with 75% ethanol if necessary.

-Ventilation dust removal: Use a vacuum cleaner or hair dryer to clean the heat dissipation holes and air intake every month to prevent dust from blocking and affecting heat dissipation.

2. Temperature calibration and verification

-After preheating for 30 minutes every day, use a standard thermometer (accuracy ± 0.1 ℃) to verify the deviation between the set temperature and the actual temperature, and the error should be controlled within ± 0.5 ℃.

-If not used for a long time, the temperature control system needs to be recalibrated and the calibration data recorded.

3. Checking of oscillation parameters

-Before operation, confirm whether the parameters such as speed, amplitude, and tilt angle meet the experimental requirements to avoid overload operation.

-Run without load for 10 minutes and observe whether the oscillation is stable, whether there is any abnormal noise or shaking.

3、 Regular maintenance plan

1. Lubrication of mechanical components (quarterly)

-Apply an appropriate amount of silicone grease or specialized lubricating oil to the moving parts such as bearings, guide rails, and pulleys of the oscillation mechanism to avoid rust and wear.

-Check the tightness of the belt, press the middle of the belt with your fingers, and the deflection should be within the range of 5-10mm. If it is too loose, adjust the tensioning wheel.

2. Electrical system inspection (every six months)

-Check if the power cord and plug are aged or damaged, and if the fuse is functioning properly.

-Clean the gaps between the control panel buttons to prevent poor contact caused by dust.

-Check the motor current, and if it exceeds the rated value by 20%, investigate the load or circuit faults.

3. Maintenance of refrigeration and heating modules (annually)

-Clean the dust on the condenser fins using a soft bristled brush or high-pressure gas tank to ensure efficient heat dissipation.

-Check for leaks in the refrigerant piping (by using a leak detector or observing abnormal frosting), and replenish Freon if necessary.

-Heating elements (such as PTC ceramic heaters) need to be tested for insulation resistance and replaced promptly if they are aged or damaged.

4、 Long term suspension management

1. Pre shutdown treatment

-Before turning off the power, set the temperature control knob to low and turn off the power after the compressor stops running.

-Take out the sample tray from the warehouse, clean up any residual substances, and wipe dry.

2. Moisture and mold prevention measures

-Place a desiccant (such as a silicone bag) in the compartment to absorb moisture.

-Power on for 2 hours every month and use the instrument's own heat to dissipate internal moisture.

3. Protective coverage

-Cover the entire machine with a dust cover to prevent dust from entering the chamber or touch screen.

-Stick protective film on the control panel buttons to prevent accidental touch or contamination.

5、 Operating standards and precautions

1. Loading restrictions

-The sample weight should not exceed the rated load (usually 80% of the maximum load capacity), and should be evenly distributed to avoid oscillation imbalance caused by one-sided weighting.

-Liquid samples should be stored in sealed containers to prevent overflow and corrosion of the chamber.

2. Parameter setting taboos

-Avoid frequent changes to temperature or speed, and ensure stable operation for at least 30 minutes after each adjustment before proceeding to the next setting.

-It is strictly prohibited to directly start oscillation in high temperature (>50 ℃) or low temperature (<4 ℃) mode. Preheat or pre cool to near the set temperature first.

3. Exception handling

-Temperature out of control: Stop immediately and check if the temperature control sensor (such as PT100 probe) is detached or damaged.

-Abnormal noise: Stop the machine to check if the bearings and belts are loose, tighten screws or replace worn parts.

-Odor or smoke: Cut off the power, investigate the cause of circuit short circuit or motor overheating, and contact professional maintenance.