Before installation, thoroughly inspect all new filter bags and cages to prevent immediate failures and ensure optimal performance.
1. Quantity Verification
Confirm that the quantity of bags and cages matches the order and the baghouse requirements.
2. Filter Bag Inspection
- Verify the correct material, size (length and diameter), and type (e.g., snap-band, raw edge, top-load, bottom-load) of filter bags.
- Inspect each bag for any signs of damage, such as tears, holes, frayed seams, or manufacturing defects.
- Examine all seams and stitching for integrity. Ensure they are strong and consistent.
- For snap-band or top-load bags, check the integrity of the sealing gasket or collar. It should be pliable, free of cracks, and fit snugly.
- Look for any inconsistencies in the filter media itself, such as thin spots or uneven felt.
3. Filter Cage Inspection
- Check for bent wires, broken welds, corrosion, or any other structural damage that could compromise the cage’s integrity or damage the filter bag.
- Ensure the correct cage diameter, length, number of vertical wires, ring spacing, and top/bottom configuration (e.g., rolled flange, split collar, with/without venturi).
- Ensure cages are perfectly straight and round to prevent abrasion against the bag or difficulty during installation.
- Verify that the cage finish (e.g., epoxy coating, galvanized) is intact and free from chips or rough spots that could abrade the bag.
4. Filter Bag and Cage Fit Check
Gently insert a cage into a new bag to check for proper fit. There should be a slight snugness (typically 1/4″ to 3/8″ smaller cage diameter than bag diameter for felt bags, less for woven or membrane bags). If it’s too tight, installation will be difficult and cleaning impeded. If it’s too loose, it can cause bag abrasion.
5. Storage
Store new bags and cages in a clean, dry area, protected from dust, moisture, and physical damage until ready for installation. Keep them in their original packaging if possible.