Grain Systems Unload Augers PNEG-1049 - Manual (Page 28)

28 PNEG-1049 10"-12" Commercial Bin Sweep Augers
5. Electrical Motor Drive Selection
The horsepower recommendations are for moving reasonably dry grain. High moisture grain (above 15%)
will require greater power if maximum capacity is to be maintained. The maximum possible capacity will
be less with high moisture grain than with dry grain.
Use the Table below to determine the horsepower required for the bin sweep and the motor sheave
diameter. Use an electric motor that operates at 1750 RPM. The motor and the motor sheave are
not furnished.
Motor sheave for the bin sweep when used with a 10" unloading system: 5" O.D. motor sheave, results in
speed of 250 RPM.
Motor sheave for the bin sweep when used with a 12" unloading system: 6" O.D. motor sheave, results in
speed of 290 RPM.
Bin Diameter
24'-37' 38'-55' 56'-75' 76'-113' 114'-120'
Horsepower 3 5 7-1/2 10 15
DANGER
A main power disconnect switch capable of being locked only in the OFF
position should be used. The switch should be locked out whenever sweep is
not in operation.
1. Electric motors and controls should be installed by a qualified electrician and
must meet the standards set by the National Electrical Code and all local and
state codes.
2. A magnetic starter should be used to protect the motor when starting and
stopping. It should stop the motor in case of power interruption, conductor fault,
low voltage, circuit interruption or motor overload. Then the motor must be
restarted manually.
3. Some motors have built-in thermal overload protection. If this type motor is
used, use only those with a manual reset.
4. The motor starting controls must be located outside the bin. They must never
be installed on the bin sweep. Locate the motor starting controls outside the
bin, but near the bin door so the operator has full view of the operation inside
the bin.
5. Disconnect power before resetting motor overloads.
6. Reset and motor starting controls must be located so that the operator has full
view of the entire operation.
7. Make certain all electric motors are grounded.
8. Shut off power to adjust, service or clean.