Tip & How-To about Baby Care

Hello. These automatic shredders are so handy. You put a piece of paper [or two or three] in the paper entry area and it automatically turns on...........how convenient.................BUT eventually, most of us run into the situation where the @#$%^ thing won't automatically turn off..........and then it seems like we either unplug it every time, or start shopping for a replacement. NO LONGER......Read on.......In most instances, a shredder that continuously runs isn't broken, it merely needs some TLC. Most shredders, contain two tiny sensors near the paper entry area. These sensors are designed to shoot signals back and forth enabling the shredder to turn itself on when paper enters the machine. After the paper has made it through, the sensors then tell the machine to shut off. Sometimes these sensors can malfunction. This can happen when oil, paper dust, or debris covers the sensors. Covered-up sensors essentially tell the shredder that paper is entering it, thus causing it to continuously run. While this problem can occur in both cross- and strip-cut machines, it tends to happen more often in cross-cut units because those units are oiled more frequently and create more paper dust than strip cut units. THE FIX: wipe the debris or oil or ink off the sensors. Here's how to do it: 1. Unplug your shredder and look for the sensors in the paper entry area. In the center of the opening, there will be two things that look like marbles - these are what you're looking for. (Please note - if your shredder has a safety flap over the cutting mechanism, you may have to lift it to find the sensors.) 2. After you've found the sensors, use a slightly damp cotton ball or Q-tip to clear away any oil or paper dust. You can use a small pair of needle-nose pliers or tweezers to clear away any large chunks of debris. If your machine is a model that lacks the electronic sensors - such as a smaller deskside shredder designed for home use - you can still fix the problem on your own because those machines have mechanical sensors. These are also located in the middle of the paper entry and they look like small plastic dividers. (In most of these models, the sensors are white, but they could also be gray or black.) The sensors are depressed when paper enters the machine, which causes it to start shredding. Once the paper is gone, the machine stops. 1. Sometimes bits of paper can weigh down on the sensors, thus causing the machine to run non-stop. But it's easy to clear up this problem by doing the following: 2. Unplug the shredder and locate the sensors. Remove any debris. Use tweezers or pliers, if necessary, but be careful to not press down too hard on the sensors to avoid damaging them. Once again, after you remove the debris, plug your machine back in and you should be up and running. Happy shredding everyone!

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infoguard sx100m


I don't own this shredder, but most are built with similarities. Usually there is a micro-switch that's used to detect a piece of paper being inserted. Should this switch get jambed, it will continue to "sense" paper being inserted and continue to run.
As I said, I don't know this shredder, but it would be reasonable to assume that someone will need to open the shredder and clean (or replace) the switch.
As a possibility, I think I would try using one of those 3M Dust Remover can's of compressed air and see it you can dislodge any paper or paper dust around the switch by blowing through the paper entry opening. (Will need to look into the opening to see where the switch is located. Usually near the center.)
Otherwise need to have a technician come out.

Aug 28, 2014 | Industrial Paper Shredders Office...

1 Answer

Shedder OM99732 in automatic mode will start and shred when paper put in, but will not shut off. It also appears there is some type of plastic covering the screws so I am unable to remove the cover. It also has started up on its on when in auto mode and keeps running even though there was no paper fed into shedder.


It sounds like a piece of paper is blocking one of the two photo cells that detected when a piece of paper (or a CD / DVD) has been inserted for shredding. The (six) screws that secure the top are accessible from the bottom of the shredder unit after it is removed from the paper bin. Be careful: There are three different sets of wires connecting the top control plate to the bottom motor and cutter assemblies. It is not too difficult to get inside the shredder "head" if neccessary.

Aug 23, 2010 | OfficeMax Office Equipment & Supplies

2 Answers

The shredder is set on automatic. When I put


Most of these have an optical sensor to start them. Might need a wipe with a damp cloth (disconnect from power first!)

Nov 20, 2009 | Fellowes Powershred 4800CC Shredder

1 Answer

Paper shredder does not turn off. I have to open


I'm assuming that it automatically detects the presence of paper... .

By opening the drawer you're disabling it from the safety switch. (they dont want you to shred your fingers from the bottom) There is probably a small piece of paper holding the feed sensor down.

If you're confidant, unplug the unit and take apart the plastic cover. Do not remove anything inside. Look for the small switch between the blades which 'feels' the presence of paper. There is probably a small piece of paper wedged between the housing and the switch which would fool the unit into thinking it has paper that still needs to be shredded.
Carefully put your unit back together and happy shredding.
This may happen often, remember what you did!!!

Jul 30, 2009 | World Office Products Papermate PM-1550CD...

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