How to install and use explosion-proof positive pressure cabinet?

Explosion-proof positive pressure cabinet installation

1, cabinet installation

A. Cabinet installation location: indoors or outdoors with a roof, no obvious vibration flat place.

B. This product is installed in the floor type (hanging type can also be), the product is set to the bottom of the dedicated mounting holes for the specific parameters, see technical accessories or product in kind

C. The wiring mode is the cable trench layout. The user cable trench structure can refer to the relevant national standards and industry standards, and combine the structural requirements of the cabinet for design and construction.

D. The product is strictly prohibited to be tilted during transportation and installation. It is strictly forbidden to carry it by means of hammers or hammers. Otherwise, the sealing performance of the product may be affected and the product may not operate normally.

E. The product is equipped with air intake and exhaust ports. The user shall arrange the air intake pipe according to the "airline piping layout". The exhaust port shall be discharged on site or led to a safe area after passing through the fire damper. The user shall provide the site. Intake gas source, the gas source pressure is generally controlled at 0.4-0.8MPa, the inlet gas source is clean air (such as: instrument air) or nitrogen gas (Note: in the closed operating room, be careful to use nitrogen as a protective gas, If you must use nitrogen as a protective gas, please pay attention to on-site ventilation to ensure personal safety). Do not allow the intake air source to be an explosive mixture! !

F. It is forbidden to adjust the pressure reducing valve, otherwise it is easy to cause high pressure flushing cabinet (the pressure relief valve has been adjusted well at the factory).

2, the installation of user components

A. Since the power distribution system components in the cabinet are installed by the user, the user must install and debug in the safety zone.

B. Do not remove the electrical components on the panel to avoid affecting the airtightness of the cabinet.

C. The low pressure interlocking contactor is installed in the positive pressure chamber. The user shall interlock the main distribution system power supply through the low voltage interlocking contactor so that when the pressure in the positive pressure chamber is too low, the main distribution is cut through the contactor. Electric power supply.

D. When the user is wiring, please pay attention to the tightness of each incoming and outgoing cable, and depending on the degree of tightness of each cable, use explosion-proof cement for proper sealing.

E. The user must ensure the sealing performance when the door is closed after the wiring is debugged.

F. The cabinet must be grounded to a special grounding screw as required.