Hog Slat Inc. Newton Grove, NC USA January 2023 REV A1 3 Pit Scraper Systems 3. The scraper will automatically return to the “HOME” position. If the scraper is not traveling toward the wall that was identified as the “HOME” wall, stop scraper system, disconnect power and swap “RED” and “BLACK” wires at the input terminals #9 and #11 from motor connections to change motor rotation. (See Wiring Instructions – Figure 5). 4. Re-connect power and repeat step #2. Scraper direction should have changed and now be traveling toward “HOME” wall. 5. While scraper is moving, activate the limit switch that the blade is traveling towards using a rod or some other method to safely reach the limit switch. While activating the limit switch the scraper motor should stop. If it does not stop, turn off power immediately before scraper blade is allowed to contact limit switch. 6. Swap limit switch wiring position in control cabinet (See Wiring Instructions – Figure 5). 7. Manually move scraper away from end wall and repeat steps 2 and 5. If limit switches are in correct position, activation of the limit switch while scraper is moving toward that same limit switch will stop the motor. Releasing the limit switch will allow scraper motor to restart. Allow scraper motor to run until scraper blade has made contact with limit switch and motor has stopped to confirm proper setup. Programming 24 Hour Timer Always perform programming with power disconnected. The “Red” safety lock-out switch must be “OFF” before opening cabinet door. 24HR timer is used to program the start of a scrape cycle. The “ON” event will signal the pre-soak output to open the valve and start the pre-soak delay. Once the delay time has elapsed the blade will travel to the opposite wall. The next “OFF” event will restart the pre-soak output and once pre-soak delay has elapsed the blade will return back to original starting position. Setting Clock: REFERENCE FIGURE 1 1. To set time on clock, use the rotary knob to set the time (hour, minutes). The knob can be turned either clockwise or counter clockwise. To set the time in the morning, 3/6/9 must be visible in the three windows. Time set by rotating center section clockwise or counter-clockwise
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