As a core equipment in industries such as chemical, pharmaceutical, and food, the stable operation of high-temperature blast drying oven directly affects the accuracy of experimental results and production safety. This article is based onDHGTaking the series as an example, the system elaborates on operational standards and maintenance points to assist users in achieving maximum equipment efficiency.

1、 Standardized operation process: full cycle management from startup to shutdown

Check the three elements before starting up

Environmental confirmation: Ensure the surroundings of the equipment0.5No flammable materials within the meter, relative humidity≤85%

Power detection: use380VWhen using three-phase electricity, the grounding resistance should be less than4Ω

Component inspection: Confirm that the blower motor rotates flexibly and the sealing plug of the test hole is intact

Four step method for temperature setting

First use requires temperature calibration: Place the standard thermometer in the center of the box and compare it with the displayed value

Segmented heating: for200℃The above process is recommended to be upgraded first100℃maintain30Continue heating up in minutes

Parameter locking: prevent unauthorized personnel from modifying key parameters through administrator passwords

Emergency stop test: Simulate an over temperature alarm once a month to verify the reliability of the independent temperature limiting system

Sample placement specifications

The shelf load is controlled at the rated value80%Within, avoid obstructing the circulation of hot air

Liquid samples need to use anti dumping containers, and solid samples should be spaced apart≥2cm

It is strictly prohibited to place highly volatile and corrosive substances to prevent damage to the coating of the inner liner

2、 Hierarchical maintenance system: combination of daily maintenance and in-depth maintenance

Daily maintenance checklist

Cleaning: Use a soft cloth to wipe the outside of the box and clean the dust on the air inlet filter

Record: Fill in the 'Equipment Operation Log', including temperature fluctuations, abnormal sounds, etc

Detection: No load operation10Minute, confirm that there is no abnormal noise from the blower system

Weekly in-depth maintenance

Heating tube inspection: Use an infrared thermometer to check the consistency of temperature rise in each area, with a temperature difference>5℃Need to adjust

Sealing strip maintenance: Apply silicone grease to prevent aging and cracking

Data calibration: Verify the weighing module (with weighing function model) using standard weights

Annual Professional Maintenance

Replacement parts: vulnerable parts such as fan bearings and heating pipes should be replaced regularly according to their usage duration

Performance testing: Entrust a metrology institution to conduct temperature uniformity and deviation testing

Safety assessment: Check the effectiveness of the grounding system and leakage protection device

3、 Common troubleshooting and emergency response

Principles of emergency response:

When an over temperature alarm occurs, immediately cut off the power and open the box door for ventilation

When there is a liquid leak, use absorbent cotton to treat it, and do not directly rinse the electrical parts with water

When you smell a burnt smell, keep the equipment powered off and contact professional personnel for maintenance

4、 Three tips to extend the lifespan of equipment

Step by step cooling method: After the experiment, turn off the heating first and then run the blower10Minutes, wait for the temperature to drop80℃Power off again below

Sample pretreatment: High humidity samples are first processed60℃pre-drying30Minutes, reduce the erosion of equipment by condensed water

Data backup: Optional printer models require monthly ribbon replacement to prevent data loss

By establishing'operation-maintenance-improveenhancerefine'The closed-loop management system,8DHGThe service life of the series drying oven can reachOver the years, the failure rate has decreased