Price FFU series Installation And Service Manual page 31

FAN FILTER UNIT
INSTALLATION & SERVICE INSTRUCTIONS
NOTE: Extreme caution should be taken when removing the filter if the filter is to be reinstalled. Touch the filter by the frame only;
never touch the filter media as it can damage the filter.
STEP 5: Remove the nuts securing the blower housing using a 7/16" socket wrench (or equivalent).
A 7/16" ratchet with extension is recommended for ease of access for unfastening.
NOTE:
FIGURE 29: 2X2 FORWARD CURVED BLOWER HOUSING.
NUTS LOCATED
ON TOP OF
BLOWER HOUSING
FIGURE 30: 2X3 AND 2X4 FORWARD CURVED BLOWER
HOUSING.
FIGURE 31: 2X3 AND 2X4 BACKWARD CURVED BLOWER
HOUSING.
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