The air shower room serves as the first line of defense in maintaining a clean environment within a dust-free workshop. Once delivered to the installation site, it typically arrives in parts and must be properly assembled and wired before commissioning. While different manufacturers may design their air shower units differently, the general principles and procedures are largely similar. Here’s a detailed guide on how to assemble and wire an air shower room for purification systems in the South China Sea area:
First, wiring the air shower unit.
1. **Power Supply**: The system supports either a 24V DC or 24V AC power supply. Always refer to the control wiring diagram provided by the manufacturer for accurate connections.
2. **Input Terminals**:
- X1: External door jog switch
- X2: Internal door electric switch
- X3: External door magnet
- X4: Internal door magnet
- X5: Air shower indoor infrared sensor
- X6: Unused
- X7: External door clip
- X8: Internal door clip
3. **Display**: Connect using a 9-pin serial cable to the LCD screen, which requires a 24V DC power output.
4. **Output**: Use relay board connection pins.
- R1-R2 share COM1-2; R3-R4 share COM3-4; R5-R6 share COM5-6; R7-R8 share COM7-8.
- R1 connects to the SL terminal of the external door closer, with COM1-2 connected to GND.
- R2 connects to the SL terminal of the internal door closer, also connected to GND.
- R3/R4 control the fan relay, with COM3-4 connected to the 220V AC L terminal.
- R5/R6 control the lighting, with COM5-6 connected to the 220V AC L terminal.
- R7 connects to the emergency switch, and R8 connects to the status lamp, with COM7-8 linked to GND.
Second, operating the air shower.
After powering on, the screen backlight will activate. Press the "SET" key to access the settings menu. Use the arrow buttons to navigate and adjust the time settings for the outer door, inner door, and fan. After making changes, press "ENT" to save. If you need to return, use the "ESC" key. The "ALM" button is reserved for emergency situations.
Third, the air shower workflow.
When the outdoor door's jog switch is triggered, the outer door opens immediately. Personnel enter, and once the last person has entered, the door closes. The infrared sensor then activates the fan, followed by the opening of the inner door. As the last person exits, the timer starts. When the inner door is closed and the outer door is opened, the system triggers the next step. Once the person enters, the inner door closes, and the outer door opens automatically.
Fourth, common issues and solutions.
If the air shower system malfunctions, check the text display for error messages. Ensure the outer door is closed when it should be, and the inner door should show as "white." The fan should be active when running, and the anti-pinch sensors should light up when triggered. If any components do not respond, check the corresponding wiring. When doors are closed, the magnetic field should be active, and the infrared sensor should detect objects or people blocking the path.
Proper assembly and wiring are essential for the smooth operation of the air shower room. Following these steps ensures a safe and efficient purification process in cleanroom environments.
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