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LP Panelized Baghouse 684LP - 882LP
9. Lower Plenum Access Section Attachment and Internal Cleaning Assembly
Damage may occur to the rotating arms if interference is made while lifting or assembling body sections.
Take precaution against pinching when handling and installing the cleaning system components.
Attach the clean-air access plenum assembly to the tubesheet and then install the filter cleaning system components. The cleaning
assembly consists of the items shown in Cleaning Assembly illustration.
1. Prepare the tubesheet with sealant around the tubesheet perimeter.
2.
Lift the clean-air access plenum assembly onto the tubesheet, making sure that the door is in the proper position.
NOTE: The placement of the access door is critical to ensure proper orientation. Consult the original order or Donaldson
supplied customer drawing to determine where to position the access door.
Make sure that the Magnehelic Gauge connection in the clean-air access plenum assembly is close to the Magnehelic Gauge
connection in the dirty-air plenum BS1 panel.
3. Install all bolts and tighten.
4. Lift the rotating elbow into the clean-air access plenum assembly and slip the shaft into bearing on tubesheet. Temporarily
support the rotating elbow by placing wooden blocks between the tubesheet and the elbow base.
5. Lift the support channel “H-frame” with seal box into clean-air access plenum. Align internal bearing with rotating elbow shaft
and lower the “H-frame” channel frame onto wall mounts. Install all bolts in wall mounts and hand tighten.
6.
Using a level or a framing square on the rotating elbow flange, check that the rotating elbow shaft is vertical in all quadrants.
Check the rotating elbow is centered in seal box opening.
7. Rotate the elbow by hand and check for any obstructions.
NOTE: The urethane seal should drag on elbow pipe.
8. Lift sweep arm(s) into access section and place on tubesheet. Attach the arm(s) to the rotating elbow.
9. Rotate the sweep arm assembly by hand and check for obstructions before attaching the chain.
10.
Make sure that the cleaning arm has the same separation from the tubesheet in all four quadrants of 3 o’clock, 6 o’clock, 9
o’clock and 12 o’clock. To do this, place the cleaning arm in the 3 o’clock position. Measure the amount of sweep shoe rod
that is extending above the cleaning arm. Measure how much the rod extends in the remaining 3 quadrants. If the difference
between these four measurements are less than 1/2-in, no further adjustments are required. If these measurements are
greater than 1/2-in, check to make sure the tubesheet is level and properly supported in the middle. If the difference between
the four measurements is greater than 1/2-in, adjust the pillow block bearing or pillow block bearing shim.
