BLT421S Product Manual
10
5.2 Specific operation process
5.2.1 Preparation of clean bench
Prepare the clean bench, start it up and ensure its functionality:
1. Check that the equipment is clean and qualified (checks the cleanliness of the dust particle counter ), and confirm
that the FFU purification unit is within the validity period (measure the average wind speed in the working area,
when the wind speed cannot reach 0.3m/s, the FFU purification unit must be replaced);
2. Check whether each switch is running normally, and check whether the fan is running normally;
3. It is strictly forbidden to install unnecessary items in the clean working area to ensure that the clean air flow is not
disturbed;
4. For clean workbenches that are newly installed or have not been used for a long time, please use a clean cloth and
anhydrous ethanol to wipe them clean before use;
During operation:
1. Turn on the power, and pull the glass sliding door of the clean workbench to the lowest position (leaving a gap of
about 10cm);
2. Start the fan, it is recommended to purify the clean table for about 30 minutes in advance;
3. Turn on the light source of the clean workbench.
5.2.2 The cutting head is placed in the clean workbench
Put the cutting head horizontally inside the clean workbench.
Clean table type: vertical
purification; cleanliness class:
ISO 5, 100; average wind speed
≥ 0.4m/s
Notice:
To prevent dust from contaminating the core area of the
cutting head, please ensure the integrity of the special
protective film/cap for the optical fiber interface before
plugging and unplugging the optical fiber.
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