Grain Systems PNEG-707GSI - Manual (Page 42)

4. Orientation Wall Sheets and Vertical Channels
42 PNEG-707 12', 18', 24' and 30' GSI Commercial Tower Dryer
Lifting Dryer Guidelines
Tower dryer is built from roof down, rather than from the ground up. Dryer is lifted to install each set of
vertical channels and other components. From below dryer roof to hopper, each lift will have two (2) rows
of inside wall sheets and four (4) rows of outside wall sheets installed to each set of vertical channels.
Customarily, jacks are used to lift dryer during construction. Eight (8) 10000 pound, 14' tall lift jacks with
hoisting tackle should be sufficient.
Place jacks 11-1/2" to 12" from dryer wall. Place first jack on L.H. side of outside ladder (safety cage may
obstruct R.H. side). Space remaining jacks equally around dryer so that each jack will lift approximately
the same share of the dryer weight. Center each jack between the two (2) vertical channels it will lift.
Level and plumb jacks. Anchor jacks as specified by manufacturer.
The dryer is heavier with each successive lift. Use a sufficient number of jacks to support the increasing
weight of the dryer. Begin with the number of jacks required (usually four (4), six (6) recommended) and
add more jacks as dryer weight increases.
Follow jack manufacturer’s instructions to attach and operate jacks, and lift dryer. In general, place an
even amount of tension on each jack cable so dryer will rise evenly and smoothly. Maintain a smooth,
steady motion during the lift to avoid wrinkling wall sheets.
Refer any questions to a qualified rigger.
Lift Bracket Installation
Install two (2) lift brackets to dryer for each jack when bolting on the bottom row of outside wall sheets.
From bottom of vertical channel, use bolt holes 3, 4, 5, 6, 7 and 8.
Span two (2) lift brackets with lift bar so jacks do not block vertical rows of bolt holes.
Use 3/8" x 1-1/4" galvanized bolts and nuts.
Initial Lifts
Bolt through vertical channels and outside wall sheets where lift brackets will go with 3/8" x 1", grade 8
bolts. Tighten nuts, then install lift brackets over them. Secure with a second nut.
Blower Lift through Hopper Lift
Bolt lift brackets flat against wall sheets and vertical channels for stability. Install more jacks
as necessary.
Take care during lift of dryer to avoid injury to personnel or damage to dryer and
other structures. Do not lift dryer when it is windy enough to shift jacked dryer.
Sweep any dropped bolts, debris from under dryer after each lift.