Grain Systems Bucket Elevtors, Conveyors, Series II Sweeps PNEG-751-G2 - Manual (Page 76)

11. Troubleshooting
76 PNEG-751-G2 12" Series II Sweep 131' and 135' Diameter
How large of an opening do I need for a standard flow (15000 BPH) center sump?
If installing a GSI supplied sump shell with collector ring, the opening must be 42-1/2" x 42-1/2" x 30"
deep for the 12" sweep.
The sump hopper supplied by GSI was designed with sufficient clearance around the collector ring
housing to allow grain to gravity flow through the hopper and be carried away by the material handling
equipment below it. 42-3/4" is the maximum opening size to allow rolling clearance for the casters
assembled to the head end jack. If the sump is made smaller, grain flow may decrease to an
unacceptable level.
Figure 11B
The open area of this sump is misleading. The collector ring housing sticks down into the sump,
blocking off a portion of the flow. Also, the sweep covers about one quarter of the opening at the top.
We use 75% of the theoretical flow around the housing for the actual flow.
What intermediate sump spacing do I need? Why?
It is required to install the intermediate sumps on a maximum of 10' centers where the sweep will be
parked during storage. The first intermediate sump should be placed a maximum of 10' on center from
the center sump and the end sump should be no farther than 4' from the bin wall. The extra sumps will
help clean out the grain in front of the sweep, reducing the start-up load. Doing this will save labor
dollars and hours of work to dig out the sweep and will help the sweep during start-up. The sweep is
not designed to start-up when submerged in material. The sweep should be parked behind the
intermediate sumps with the sumps on the auger side of the sweep.
Do I need to clean out around the end of the sweep prior to starting it up?
Enough material must be removed from around the tractor drive and the screw drive units to allow
access to the motor/drive covers. Both the chain drive and the belt drive must be free of grain before
and during operation.