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Screw Conveyors may be purchased as individual components, with all assembly operations performed in the field.
Screw conveyors may also be purchased as shop assembled units complete with drive
equipment. Shop assembled units are supplied with assembly drawings. Long conveyors are separated into convenient shipping lengths and match marked for proper reassemble.
Shop assembled screw conveyors are furnished with all required nuts and bolts except anchor bolts.
When individual parts are purchased for complete field assembly, nuts and bolts are not furnished unless ordered.
These installation instructions should be adequate for complete field assembly of individual components. They should also be reviewed for assistance in the proper installation of shop assembled units and installation of
replacement components.
The safety section must be reviewed before actual startup of screw conveyor. See Page 2.
Receiving and Inspection
Immediately upon
receipt, all conveyor units and components should be inspected for any damage. In the event of damage, a claim should be filed promptly with the carrier.
Installation
Assembly
Place conveyor troughs in correct order, with discharge spout in proper location. Connect trough flanges loosely, do not tighten bolts. Align trough bottom center lines, using the
piano wire technique (or similar method). Tighten anchor and flange bolts. Then complete the following:
1. Bolt drive end trough end to conveyor trough flange at proper end.
2. Bolt drive unit
to drive end trough end with drilled shaft end protruding through shaft hole into conveyor trough. Bolts should be installed with bolt heads inside trough end. Shaft should be centered in trough end shaft hole before
tightening nuts.
3. Install drive end screw section by sliding screw onto drive shaft and inserting coupling bolts. Install and tighten lock nuts.
NOTE: If end lugs are present on screw flighting install screws with lugs on non-carrying side of flight.
4. Insert a coupling shaft in the opposite end of screw and secure with coupling bolts and locknuts.
5. Slide hanger bearing installed in hanger on coupling shaft to within 1/32" of screw end and loosely clamp
hanger top bar to conveyor trough top flange on both sides.
6. Continue assembly of screw sections, couplings, bolts with locknuts and hangers as described above. During assemble, each screw section should be
installed with flight ends as close to 180 degrees from adjacent screw as possible.
7. Install last screw section as described above, then insert end shaft in screw and secure with coupling bolts and locknuts.
8. Install tail end trough end by inserting end shaft through shaft hole and bolting to trough flange.
9. Seal and flange bearing should be installed by sliding seal and bearing onto end shaft. Be sure that
seal is installed with proper side against trough end. Bolts should be installed with bolt heads inside trough end. Shaft should be centered in trough end shaft hole before tightening nuts.
10. Check end shaft for proper clearance between trough end and pipe end of last screw, clearance should be 1/2 of hanger bearing space.
11. Check hanger top bars for alignment, starting at hanger closest to
drive end. Hanger and hanger bearing must be straight and true. Clamp hanger top bar securely and drill mounting holes. Bolt and tighten nuts. Proceed with other hangers in same
manner.
12. For inside mounting hangers, 216, 226, etc..., bolts should be installed with heads on inside of troughs, nuts outside. Top mounting hangers, 220, etc..., bolts should be installed with heads on top
and nuts under trough flange.
13. The set screws on bearing race on flange bearing at end opposite drive (tail end) may be left loose or discarded.
14. After installation of sheaves and v-belts
on drive unit, rotate largest sheave by hand thereby rotating screws. If any binding occurs, loosen bolts to hanger or hangers where binding is present, realign and tighten bolts.
Initial Start Up
1. After locking out power, check bearings and drive for proper lubrication.
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