5. Operation
PNEG-1156ETL Design III Series Grain Stir-Ator CSA 49
Track Unit Drive Sprocket
The Design III Stir-Ator has the versatility to adapt to the changes in the physical characteristics of the
grain. The roller chain sprocket on the gear motor is connected to the track drive wheel by means of the
roller chain. The forward speed on the Design III Stir-Ator can be varied by changing the roller chain
sprocket on the gear motor.
Listed below are the standard roller chain sprockets used:
Standard trolley units under 36' diameter - 10 Tooth sprocket
Standard trolley units 36' diameter and above - 12 Tooth sprocket
Offset trolley units under 36' diameter - 12 Tooth sprocket
Offset trolley units 36' diameter and above - 14 Tooth sprocket
Stir-Guard Operation (Optional)
The Stir-Guard is designed to protect the grain by shutting off the Stir-Ator if the unit is not advancing
around the bin normally. As the gear motor drives the unit around the bin, a microswitch actuator which
rides on the lower notched swivel block sends a pulse to the solid state timer each time the roller advances
one notch. If the unit does not advance forward enough to actuate the switch in 45 minutes, the timer will
run out and the power to the motors on the Stir-Ator will be shut off by the contactor located in the swivel
box of the Stir-Ator.
To reset the Stir-Guard timer, move the switch box handle to the “OFF” position and then back “ON”. The
unit will start-up again. Before the Stir-Guard is reset, the problem that caused the Stir-Guard to shut off
should be located and corrected.
If adjustment of the microswitch roller actuator becomes necessary, turn OFF the power to the swivel at
the switch box. Remove the right swivel box cover and loosen the nuts on the roller switch plate. Rotate
the swivel block so the switch roller is riding on the peak of a swivel cog. (See Figure 5B.) Slide the roller
switch plate slowly in until the microswitch clicks, then move the switch an additional 1/16" and tighten the
nuts. Rotate the swivel to assure the switch clicks “ON” and “OFF” as the roller rides in and out on the
swivel cog. This is necessary for a pulse to be sent to the Stir-Guard timer. (See Figure 5B.)
Figure 5B Stir-Guard Microswitch Adjustment
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