Hog Slat Inc. Newton Grove, NC USA AUG 2026 REV A3 7 Ventilation An optional HS1129 AUTO/MANUAL SWITCH ASSEMBLY(Purchased Separately) may be used between the Power Drive unit and the controller. This allows for local control of the Power Drive which may aid in setting limits and testing. Use with 120V models only. To use the Manual feature, set ventilation controller to either OPEN or CLOSE operation. The HS1129 will take that signal and allow user to open or close Power Drive manually. User may use the manual operation to quickly move the Power Drive unit to position to program the limits in the place of using a drill driver to rotate the motor. When doing this however user must be VERY CAUTIOUS not to operate load past its mechanical limits. Refer to step 3 to set the limits of the LSC40 switch. Reset the limits first, then use the manual switch on the HS1129 to operate the Power Drive unit until the load is in the desired position. Switch the HS1129 AUTO/MAN switch to the middle position which will stop the unit. Set limit on the LSC40. Switch directions on the HS1129 and switch to manual. Power Drive unit will change direction so the opposite travel limit can be programmed. Once limits are set, it is a good idea to operate the unit in manual mode to both limits to confirm travel limits are correct. Set unit in AUTO mode to allow house ventilation controller to operate Power Drive unit.
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