AAF International Millennium - Manual (Page 7)

For Initial Installation or Service
1. Open roof doors for access to bags (see Section 3.9).
2. Remove pulse pipes as follows:
a. Loosen the bulkhead coupling to allow the pipe to slide out.
b. Remove hairpin from the opposite end of the pipe.
c. Lift the pulse pipe assembly to clear support pin and slide the
pulse pipe away from the supply pipe until it has disengaged.
Lift and remove.
3. If performing service:
a. Remove cage/venturi assembly.
b. Remove the bag by collapsing the bag cuff into a half moon
shape as shown and lifting out.
NOTE: On the initial installation, cage/venture assemblies and
bags are shipped loose.
4. Install new bag as follows:
a. Insert the closed end of the bag through the tube sheet hole
until the bag cuff is near the tube sheet.
b. Collapse the bag into a half moon shape and insert into the
tube sheet as shown.
c. Snap the bag cuff into position making sure the center groove
of the cuff seals properly at the tube sheet.
5. Insert the cage/venturi assembly into the installed bag. The
cage top should fit snugly on top of the bag cuff.
6. Repeat steps 4 and 5 until all of the bags and cage/venturi
assemblies have been installed.
7. Re-install the pulse pipe assemblies by reversing step 2 and
verify that the pulse holes are pointed down and centered over
the bags.
8. Close the roof doors and secure the latches.
NOTE: If installing pleated bags, do not deform the bag cuff since
this may result in damage to the bag. Instead, the lower flange of
the cuff should be lightly lubricated with a liquid soap solution and
the cuff should be firmly pressed into the tube sheet until it snaps
into position.
Figure 6.
Tube Sheet Pulse Hole See Step 2a
Pulse Pipe Support
Air Supply Pipe Coupling Pulse Pipe Removal See Step 2B
Installation See Step 7
Cage & Venturi Assembly Pulse Pipe Support
Bag Assembly
Bag Cuff Tube Sheet
Bag Installation or
Removal View
7