Grain Systems Bucket Elevtors, Conveyors, Series II Sweeps PNEG-720-G2 - Manual (Page 86)

11. Troubleshooting
86 PNEG-720-G2 12" and 16" Series II Sweep
What do I do if I encounter any operational problems?
Disconnect and lock out the power before servicing the equipment, entering the bin or resetting the
motor overloads. Look through the troubleshooting section to identify any problems.
There does not seem to be any power to my sweep. What do I do?
Check to be sure the foot switch is plugged into the control panel and depressed. The foot switch has
a 10' cord so the sweep can only be monitored from OUTSIDE the bin.
The thermal protection cord must be connected and plugged in before the sweep will operate.
Your electrician should check to make sure there are no loose or shorted connections or wires. It is
possible that one of the components failed after it was tested in our plant and needs to be replaced. A
jobsite electrician can isolate any malfunctioning components. Each fuse should also be checked and
replaced if necessary.
The sweep must be wired according to the Owner/Installation Manuals.
The overload for the screw drive keeps tripping. What do I do?
The overloads for both motors are adjustable. These are not set at the factory prior to delivery and
installation. The overload inside the control panel has a small, usually yellow, dial with numbers on it.
Record the full load running amp value listed on the nameplate attached to each motor. Increase the
full load amp value by 10% and set this number on the overload dial. If the adjustable overloads are set
too low, the motors will shut down as soon as a load is put on them. Disconnect and lock out the power
before resetting the motor overloads.
Check the incoming power at the control box. The Series II Sweep is designed to operate using
460 Volt 3 Phase 60 Cycle Power. The voltage must be within plus or minus 4% for proper
operation. Voltages outside of this range may cause excessive power draw or other operating
problems. Please contact the factory for applications outside of these parameters.
Check the incoming power at the motor. Check for balanced phases. If the loads are not properly
balanced between leads, disconnect the motor and check the power leads. By using this method, we
can tell if the imbalance is caused by the motor or is from the incoming power.
The sweep must be wired according to the Owner/Installation Manuals.
My tractor drive seems to start and stop too often in automatic. What do I do?
The HYS A (High set point minus low set point) may be set with too large a number. To get maximum
capacity from the sweep, this number should be set as small as possible and not have grain spill over
the sweep backboard.
My controller quits operating. What do I do?
Check to make sure the controller has power. Each of the fuses should be checked and replaced if
required.
If the controller is functioning, it may need to be reprogrammed. Programming instructions are included
in the manual that shipped with the sweep. The controller can be damaged by large power fluctuations
or lightning strikes.
My sweep is not operating as well as it did the last time I used it. What do I do?
If the type of material or the density (moisture) of the material changes, the controller set points may
need to be adjusted for maximum output.