Section 350-Filter Installation/Replacement - Farr Gold Series Installation, Operation And Maintenance Manual

SECTION 350-FILTER INSTALLATION/REPLACEMENT

1. New units ship with filter cartridges installed. Disconnect electrical power to the fan and control box.
Disconnect compressed air service from the compressed air header. Bleed all air from the air header.
Perform an OSHA approved lock-out/tag-out procedure on these and any other energy sources
(Refer to Section 100.3 of this manual for more information).
2. Open the access doors at the front of the unit, swinging them out of the way.
3. Unlatch the clamp bars as shown in Figures 350.1-350.4. With your left hand, rotate the right-hand
clamp bar clockwise or up and pull it toward you, until it's locking tab clears the rectangular cut-out on
the left-hand clamp bar. With your right hand, rotate the left-hand clamp bar counter-clock-wise or up
and push it away from you until its locking tab clears the rectangular cut-out on the right-hand clamp
bar. Rotate the right-hand clamp bar counterclockwise or down, until it is clear of the cartridge
removal path – Figure 350.2. Rotate the left-hand clamp bar clockwise or down, until it is clear of the
cartridge removal path also – Figure 350.3. Figure 350.4 shows the cartridges ready to be removed.
4. Remove the dirty filter cartridges by sliding them off the clamp bar channels. Clean the surface of the
tubesheet in the areas where the filter gasket forms a seal.
5. Remove a new cartridge from the shipping carton, taking care not to cut or otherwise damage the
filter media. Grasp the new cartridge by the top metal pan and set it onto the clamp bar channels.
Holding the cartridge level, slide it forward taking care not to drag the gasket along the tube sheet.
Push the cartridge in just far enough to leave room for the next cartridge to rest on the clamp bar
channels. Repeat steps 4 and 5 until the row is full.
6. To seal the new cartridges, repeat the instructions in step 3 in reverse order. With your left hand,
rotate the left-hand clamp bar counter-clock-wise or up to between 80° and 90°. While pushing the
left- hand clamp bar away from you, rotate the right-hand clamp bar clockwise or up, with your right
hand. Insert the locking tab on the left-hand clamp bar when it lines up with the rectangular cut-out on
the right-hand clamp bar. Release the left-hand clamp bar. With both hands rotate the right-hand
clamp bar clockwise or up and pull it toward you, until the locking tab inserts into the rectangular cut-
out on the left-hand clamp bar – Figure 350.2. The clamp bars must be bent slightly if the locking tabs
do not stay inserted in the rectangular cutouts.
7. Repeat the above procedure until all the rows of cartridges are full.
Figure 350.1 – Clamp bars closed Figure 350.2
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