The primary filter is suitable for primary filtration in air conditioning systems, mainly used to filter dust particles larger than 5 μ m. There are three styles of primary filters: plate type, folding type, and bag type. The outer frame materials include paper frame, aluminum frame, and galvanized iron frame. The filter materials include non-woven fabric, nylon mesh, activated carbon filter material, metal mesh, etc. The protective mesh includes double-sided spray coated wire mesh and double-sided galvanized wire mesh.

Structure:

The outer frame of the filter is composed of a sturdy waterproof board, which is used to fix the folded filter material. The diagonal design on the outer frame can provide a large filtering area and tightly adhere the internal filter material to the outer frame. The filter is bonded to the outer frame with special professional adhesive around it, which can prevent air leakage or damage caused by wind resistance pressure.

The outer frame of disposable paper frame filters is generally divided into regular hard paper frames and die cut hard cardboard. The filter element is made of pleated fiber filter material lined with single-sided metal wire mesh. Beautiful appearance. The structure is sturdy and durable. The general cardboard frame is used to manufacture non-standard size filters and can be used for the production of any size filter without deformation. Die cut cardboard is used to manufacture standard specification filters, characterized by specifications that meet standard requirements, aesthetics, and low cost. If imported face fiber or synthetic fiber filter materials are used, their various performance indicators can reach or exceed those of imported filters.

The filter material is folded and packed into die cut cardboard, increasing the windward area. The dust particles in the incoming air are effectively blocked between the folds by the filtering material. Clean air flows out evenly from the other side, so the airflow through the filter is gentle and uniform. Depending on the filter material, the particle size it blocks varies from 0.5 μ m to 5 μ m, and the filtration efficiency also varies.

characteristic:

Affordable, lightweight, versatile, and compact in structure.

Mainly used for:

Central air conditioning and centralized ventilation system pre filtration

Pre filtration of large air compressors

● Clean return air system

Pre filtration of local high-efficiency filtration device

This type of efficient filter is commonly used for primary filtration in air conditioning and ventilation systems, and is also suitable for simple air conditioning and ventilation systems that only require primary filtration.

The G series coarse efficiency air filters are divided into eight varieties, namely: G1, G2, G3, G4, GN (nylon mesh filter), GH (metal mesh filter), GC (activated carbon filter), GT (high-temperature resistant coarse efficiency filter).

Maintenance and upkeep:

1. According to the cleanliness of the environment, replace the primary filter regularly (usually every 1-6 months).

2. Regularly (usually every two months) use a dust particle counter to measure the cleanliness of the area where this product is used for purification. When the measured cleanliness does not meet the required cleanliness, the cause should be identified (whether there is leakage, failure, etc.). If the high-efficiency filter has failed, a new high-efficiency filter should be replaced.

3. When replacing the primary filter, the machine should be stopped.

Hongji Clean Standard Size:

1、595*595*20mm

2、495*495*20mm

3、295*295*20mm

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