For demonstration purpose, we’ve removed the top half of the conveyor so we can show you the inside of the tank as well as the conveyor drive bar, the rack drive rails, the new dual float system for the EST-44 and 66” conveyor, and the internal workings and operation of the machine. First, what we’re going to start with is the new EST-44 and 66” dual float system. The new dual float switch is contained inside an easy access control box which is held in by the one bolt and nut. Both the wash tank and the power rinse tank contain their own switches. So I will remove the cover for the switch, I’m going to remove the wash arms by pulling them forward and lifting up in the back, removing them individuals. Removing both of the scrap trays allowing for better viewing of both the float switch and the tank itself. Here you’ll see the new dual float switch for CMA, it is a dual float system, the bottom flat will ensure that the wash tank heater has been covered with water before it’s about to activate and come on. The water level is then controlled by the top float switch, and when the float is completely raised, the wash tank is completely full of water. If the water level should drop in this particular tank, the float switch will turn on the main water valve, refilling it with water. Located in the same tank is the heating element as well as the thermostat, which you can see inside the tank. Again located as you saw earlier, above the wash tank, is the detergent bulkhead fitting access, which we’ve discussed where the bulkhead fitting should be for your detergent which is directly over the wash tank. On this side of the wash tank is the overflow which is used to carry any debris out of the machine while it’s in operation, keeping the dish water as clean as possible and free of debris. Located next to the overflow, you’ll also find an access to install a quick drain return line if you have a quick drain in your dish table. In the event your table does not have a quick drain unit, you will just leave this plug in place, making sure it doesn’t leak during operation. If it is required, you’ll find the quick drain plumbing supplies located with your unit’s installation information. Please put it in. Now we’re going to first reinstall the wash arms, when you put the wash arms in, please note, there is a front and back to the wash arm, on the back end, you will find a larger guide than in the front, what you’re going to do is simply put it in the front, pull it forward, and allow it to snap into place. Now we’re going to make the final adjustments for the dishracks so they travel evenly and level through the dish machine. First, there are 3 things to be aware of. Each rail, front and rear, can be adjusted, as well as the conveyor drive arm which holds the conveyor drive dogs. So you want to align the dishrack into the machine and you can make the adjustments at either side by loosening up inside and outside on the front and rear, and make your up and down adjustments to make sure it is level. You want to make sure they ride smoothly through the machine. If the conveyor dogs are not grasping or dragging the rack properly through the machine, there is one more adjustment you can make. On either side of the drive side rail bar, you have a small adjustment which can be made to either raise or lower the drive bar. Slide the rack in, observe how the dog grabs each rack, if you need to raise or lower the rack, make your adjustments appropriately. Sliding the rack in, the dog will grab the rack, and start pushing it through the machine. The first activation lever is for your machine start, the dishwasher will start, and the conveyor drive will start bringing the rack through the machine. Once the rack has traveled through the machine, through the wash tank, it’ll come through the power rinse tank. As the final rinse switch is activated, triggering the final excursion of the machine, observe the rack exiting the dishwasher. Make the final adjustments on this end of the tray track as necessary as you did at the beginning of the machine, so the rack leaves the dishwasher level and even with the dish table. The power rinse tank also contains a float switch, which controls the level of the water in this tank. Remove the scrap tray and the arm for better viewing. The arms remove just like the wash tank arms, it does have the same pins at the front and the rear so you know you have it installed at the proper direction, and the float switch is now revealed as well as the heating element. This tank is slightly deeper than the wash tank, because the water flows in this direction. When the float in this tank is activated, again the lower float when it rises, it will make sure that the heating element can come on when there is water in the tank and the level of the tank is controlled by the float. These floats are identical in these machines so you’re not having to stop more than one part in the event that it does need to be replaced.
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Learn the proper technique for tweaking and adjusting your CMA conveyor dishwasher’s dish drive by watching this simple tutorial! The drive helps guide the rack through the wash tank, so having it properly installed is very important.
Learn all about how to install and maintain your CMA EST-44 or EST-66 conveyor dishwasher by watching this thorough, step-by-step tutorial!
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