COOK Laboratory Exhaust - Manual (Page 8)

4.0 Assembly of the Sections
Apply the 1”x3/8” gasket material to the frame as shown in figure 3. Apply this gasket to only
one section of the two mating sections. Set the equipment as close as possible to the adjacent
sections and the remove the bolt-on lifting lugs if so equipped. There are demount lugs welded
to the base frame of the unit. These connection points are welded at the mating line of each
section. The equipment is supplied
with ¾” all-thread, nuts and washers. Slide the all-thread
through the opening in the angles and install the washers and nuts. (Fig 3.2) Do not draw the
sections together at this time. Make sure that all of the bolt points around the upper perimeter
of the frame are aligned about their vertical axis. The crane should be used to get the sections
as close together as possible and at least every other bolt are to be installed and tightened
before unhooking from the crane. Some sections may be heavier than others thus causing
them to set down further. This can be overcome with the crane lifting slightly up on the heavier
section until the Demount bolts are installed. Shimming material may be required to be
installed between the base frame and the supporting member in order to level mating
sections.
At this time, draw the sections tightly together using the demount bolts and the ¾”
all-thread. When the crane is unhooked, the two sections will settle together. The sections can
then be drawn together utilizing a chain type come-along if necessary. Do not bring up the next
section until these two sections are tightly together. Continue to bring up each section and
follow above directions until all sections are secured together.
Reference Figures 3.1 thru 3.3 for bolting configurations.