I. Reference for the core service life of the entire Machine
The reasonable service life of the horizontal flow workbench (including the ultra-clean type) as a whole is 5 to 10 years. This range is based on regular usage scenarios (4 to 8 hours of operation per day, placement in a clean environment, and standardized maintenance), and can be specifically divided into:
Laboratory-grade equipment (intermittent use) : Its lifespan is mostly 8 to 10 years, and can be extended to over 10 years if properly maintained.
Industrial-grade equipment (24-hour continuous operation, high-pollution scenarios) : Its lifespan is typically 5 to 8 years, and it requires more frequent maintenance to prevent premature aging of components.
High-demand scenarios (pharmaceutical GMP workshops, microelectronics clean areas) : It is recommended to conduct a comprehensive performance assessment every five years to ensure compliance with clean standards before continuing to use.
Ii. Service Life of Core Components (Determining the service Cycle of the Entire Machine)
The lifespan of the entire machine is essentially determined by the wear and tear of key components. The replacement cycles and influencing factors of each core component are as follows:
| Component type | Theoretical service life | Actual influencing factors |
| Primary filter | 1 to 3 months | The amount of environmental dust (in high-dust environments, it needs to be replaced every month), whether it is cleaned regularly (nylon material can be washed with water, while paper material needs to be replaced directly) |
| Medium-efficiency filter | 3 to 12 months | Maintenance quality of the pre-stage primary filter (failure to replace it in time will accelerate clogging), usage frequency (shortened to 3 to 6 months for continuous operation) |
| High-efficiency Filter (HEPA | 2 to 5 years | The filtration efficiency is ≥99.97% (for 0.3μm particles). Affected by environmental cleanliness and pre-filtration effect, it is recommended not to exceed 3 years in GMP scenarios |
| المروحة | 5 to 8 years | Operating load (filter blockage will increase fan wear), whether regular lubrication is carried out (lack of oil in bearings leads to increased noise) |
| Lighting/ultraviolet lamp | 2 to 5 years | LED lamps need to be replaced after 3 to 5 years of use, fluorescent lamps after 2 to 3 years, and ultraviolet lamps after a cumulative use of 800 to 1,000 hours (about half a year). |
| Control Panel/Circuit | 5 to 10 years | Environmental humidity (40% to 60% is the best) and whether it avoids the erosion of damp dust |
Iii. Key Factors Affecting Service Life (Subject to Human Intervention)
Usage frequency and load: The lifespan of equipment that operates continuously for 24 hours is over 30% shorter than that of equipment used for 4 hours a day. High biological loads and chemical aerosol operations will accelerate the aging of filters.
Maintenance quality: Regular replacement of primary and medium-efficiency filters can extend the lifespan of HEPA by 30% (ASHRAE data). Lubrication of fan bearings and cleaning of the table surface can prevent mechanical failures.
Working environment conditions: The optimal environment is a clean room with a temperature range of 18 to 25℃ and a humidity of 40% to 60%. High-temperature, high-humidity, and corrosive gas environments will accelerate the rusting of components.
Degree of operation standardization: Avoid blocking the air inlet/outlet (a 30cm gap should be left between the equipment and the wall), prohibit severe vibration or placing high-temperature corrosive items, which can reduce component damage.
Iv. Practical Suggestions for Extending Service Life
Daily maintenance: Wipe the countertop with 75% alcohol after each use, clean the primary filter weekly, and test the wind speed monthly (standard 0.3-0.6m/s).
Regular calibration: Noise (≤65dB) and airflow uniformity are tested every quarter, and HEPA leak detection and electrical maintenance are conducted by professionals annually.
Environmental adaptation: Place it in an area far from doors, Windows, and air conditioning outlets to avoid air flow interference. In high-dust environments, a workshop air purification system should be provided.
Compliance management: Establish maintenance records (replacement component models, test data), conduct a comprehensive performance assessment in GMP scenarios every five years, and replace core components in a timely manner when the cleanliness does not meet the standards.
