Explosion-proof positive pressure cabinets use medium isolation to isolate ignition sources as an explosion-proof measure to achieve the goal of explosion protection. They are suitable for flammable explosive gas or dust environments in chemical plants, offshore drilling platforms, metallurgy, pharmaceuticals, light industry, textiles, food, biotechnology, aerospace engineering, and other applications. They can be installed with three-phase four-wire (380V/220V) AC low-voltage electrical distribution systems according to user requirements, or for detection and control of measuring instruments, analytical instruments, monitors, microcomputer touch screens, high-power variable frequency drives, and other components.。

Installation precautions for explosion-proof positive-pressure cabinets

1、Cabinet Body的Install裝part:Indoor Or OutdoorWithTopShelter，non Significantly VibrationInteractionStandardEntire的InvincibleArea。

2. The installation methods for explosion-proof positive pressure cabinets are generally floor-standing and wall-mounted, with dedicated mounting holes for fixing.。

3. The wiring method is cable routing. The customer's cable structure can refer to relevant industry and national standards, and the design and construction should be completed in conjunction with the actual enclosure structure requirements.。

4. During transportation, be careful to prohibit severe tilting.。

5. During transportation and installation positioning of explosion-proof positive pressure cabinets, it is prohibited to use methods such as prying or hammering to move them.。Otherwise, it may affect the sealing of the equipment, causing the equipment to fail to operate normally.。

6. Explosion-proof positive pressure cabinets are equipped with an air inlet and an air outlet for customer connection.。Arrange the air inlet duct according to the relevant engineering drawings. The air outlet is discharged on-site after passing through the smoke exhaust fire damper, or connected to a safe area for discharge. The customer must provide an air inlet pneumatic valve (purge gas) on-site, with the pneumatic valve pressure generally adjusted to 0.2-0.6MPa. The air inlet pneumatic valve supplies purified indoor air (such as instrument air) or nitrogen. (note: In enclosed operating rooms, nitrogen should be used cautiously as purge gas. If nitrogen must be used as purge gas, pay attention to on-site ventilation to ensure safety.)

7. Because precision electrical components such as industrial automation electrical equipment and touch screens are installed inside, a drying filter should be installed at the inlet of the pneumatic valve to ensure that the pneumatic valve provides dry and clean gas; otherwise, the service life of the electrical components will be affected.。

8. It is prohibited for the inlet air source to be a flammable mixed gas.。

9. Explosion-proof positive pressure cabinets must be operated by professional personnel.。

10. When wiring, pay attention to the sealing of each incoming and outgoing cable (it is prohibited to discard the sealing rings in the cable glands), and depending on the tightness of each cable, use explosion-proof putty for appropriate sealing treatment.。

11. After the customer's wiring and adjustment are completed, when closing each door, ensure its sealing performance.。

12. The explosion-proof positive pressure cabinet body must have the wire connections connected to the dedicated grounding screws as required.。

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1、 Because DomesticInstallationpower distributionsystemComponentsdeviceByCustomerSelfMainadjust，Because And ，CustomerneedinsafetyPerformanceAreawithin zoneOpenTogethersetup、adjust。

2. Do not remove electrical components on the control panel to prevent compromising the sealing performance of the enclosure.。

The above is an introduction to the installation precautions for explosion-proof positive-pressure cabinets. For more related information, please visit Hualong Explosion-proof at www.hlfbdq.com/.