COOK GI Installation, Operation And Maintenance Manual page 2

To attach the base and hood sections: set the assem-
bled hood on the assembled base, aligning the mounting
bracket holes with the holes in the section rails. Units with
support angles require the support angles to be bolted to
the base, using the bolts and nuts provided.
Figure 1
Hood Panel
C
Maintenance
Hood Access
To access the throat of the unit, take the entire hood off
by removing the bolts and attaching the mounting bracket
to the mounting channels (see Figure 4). GR units with
less than a 73" throat length and GI units with less than a
61" throat length can be hinged. Hinging is accomplished
by removing the bolts on one side and loosening the two
bolts (refer to Figure 2) on the other side. Care should be
taken when hinging the hood, especially in high wind con-
ditions.
Figure 2
GI/GR IO&M
Section Rail
Throat
B
A
Filters
Filters are installed between the base and the hood pan-
els (see Figure 4). The filters should come in two sizes.
One size fits between the end panel and the base. The
other size is mounted between the base and the section
rail. Filter inspection and cleaning intervals can vary from
once a week to twice per year depending on contaminant
present and acceptable pressure drops across the filter.
Under most conditions filters may be cleaned with hot wa-
ter and a mild soap solution (such as dish washing liquid)
or steam. Some caustic cleaners will damage the filter. If
in doubt, please consult the factory for a compatibility list.
High pressure spray washers should be limited to 2,000
PSI operating pressure. Every attempt should be made to
remove the contaminants from the filter in a "backwash"
flow (NOTE: airflow arrow on the filter frame). Once the
filter is dry, it may be returned to the appropriate filter racks
in the same orientation (airflow direction) as they were re-
moved.
2 B51116-002