Dixie narco -

I was givin a Dixie Narco pepsi machine. It cools fine but when you put in the 75 cents it will not "arm" itself. No buzz, no anything. Just sits there. Through searches I have found other things about the machine but this  particular problem I can not understand where to start and what to look for...
I don't know if this matters but the "Use correct change "light is always on.
Model No. DNCB 249/138-?
Thanks for any help....

[globalcompressors]

Do you have the changer completely full of change? The machine will only work if there is change in the coin mech.
Also, the machine won't vend if the slots being tried are empty. There are paddles thet are depressed when drinks are present. Try both of these ideas and see if that will fix the problem.

Eric

The coin box is empty. The coins go straight thru the mechanism to the box. I do have one slot full (butted end to end) with the paddle depressed.
Should the coin mechanism hold the change until a soda is selected? Then fall to the catch box?

[joesquid]

Can you tell us what type of coin mech you're using?  Not to disagree with Eric, but most coin mechs will work fine with the change tube empty as long as you're using exact change in the form of dimes and nickels.  Are the coins dropping straight through the slug rejector (the upper part of the coin mech) into the change return chute?  In most cases the slug rejector is dirty and the counterweights (small rotating parts that the coin passes through) aren't moving freely.  The whole secret behind proper operation of the slug rejector is to make sure those counterweights aren't binding up and slowing or stopping coin movement through the rejector.  If that happens the coin will stick or hesitate, lose momentum and drop through the change chute.  Another problem could be that the rejector lever (located on top of the coin mech) is slightly depressed and has pushed the outer part of the rejector away from the back plate just enough that the coin has too much play room and drops straight through the rejector to the change chute.

  One other problem is that the CREMs (coin return electromagnets) aren't energized.  Most coin changers have two, one for the .25 coin path and one for the .05/.10 coin path.  The .05/.10 CREM energizes when the unit is plugged in.  An easy check is to unplug the coin changer from the coke machine then plug it back in.  You should hear an audible "click".  That means the CREM coil is pulling the CREM arms back out of the coin path so the coins can get through the rejector.  If you don't hear the click, pull the rejector off the coin changer so you can see the CREM (the .05/.10 is on the lower right side) and try the procedure again.  If you don't see the CREM arms move when you plug in the changer, the coil is probably bad and needs to be replaced or rewound.

  The .25 CREM will energize only if you have enough change in the change chute to activate a swing switch in the chute, which in turn, energizes the .25 CREM thus pulling its arms out of the .25 coin path.  

If the CREMs seem okay, try cleaning the rejector.  Remove it from the coin changer and (if plastic) soak it in a soapy water solution then rinse and air or blow dry the rejector.  The old metal rejectors (from NRI units) can be boiled (yes, like in a big pot on the stove) in a soapy water solution to remove dirt and grease.  Check the counterweights for free travel.  If they don't swing freely, carefully remove the "c" clips with a jeweler's flathead screwdriver, pull the counterweight off, wipe the shaft clean and, if need be, add a tiny (and I mean TINY) amount of penetrating oil to the shaft.  Make sure to wipe up any excess oil as it will do nothing but attract dirt.  Put the counterweight back on and carefully replace the "c" clip.  

I know that's alot to digest but I'm trying to hit all the obvious problems.  If you need help or have questions just holler.

[MoonDawg]

Very good explanation Eric.  Hope this finds it's way to the coin mechanism section for reference, since this is probably the most common problem we all have.            Glen

wOW! Your good! We are on the right track here. The "exact change" light was lit. (I dont know what the exact change it wants is ..) but I unplugged the machine and plugged in again and the light is out. I heard a click. I put it the .75 and selected a cold beverage. Bam! Out it came! But ... The correct change light came back on and would not let me buy anymore. I opened the front and hit the lil black button on the coin mechanism. The lil motor turned and I just closed the door and waited. The light turned off when I heard the click and I was able to purchase one more. But .. It would send my quarters to the change holder. I again tried with quarters and nickels. It sent my nickels into the coin mechanism but would not let me purchase anymore. I had to hit the lil black button and it spit my nickels out .... I have to "reset" the mechanism everytime. And it will not "take" my quarters most times. Only when the light is on the quarters will go into the change holder.  The coin mechanism is a "COINCO S75-9800b" made in St Louis Mo.





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