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How to Maintain A battery powered Quartz clock

How to Maintain A battery powered  Quartz clock

 certify the metal contacts within the battery holder don't seem to be unsound. The spic-and-span battery you set in won't fix the matter if the metal contacts area unit dirty. If the metal isn't shiny and clean then scrape it victimization sandpaper (220 grit or there-about can work fine). If you do not have sandpaper then you'll be able to use atiny low flat-bladed screw driver or different 'pointy' metal tool. If this fixes the matter, then you have got gotten off the hook within the best doable manner.
    Check the magnet. If the matter still persists, then the Lavet sort motor in your Quartz clock most likely includes a slightly misaligned magnet, (i.e., the rotor). you would like to maneuver the magnet back to the right position. So, you have ne'er detected of this thing? head to Wikipedia.com and skim the article on "Lavet sort stepping motor".
        Please note that this text solely shows a super-small stepper motor like is employed during a wrist-watch. The one in your clock is way larger and easier to figure on. strive to not let yourself be intimidated. it's not that onerous.
    Perform an easy check to verify that your Quartz clock has this kind of drawback. Lay your clock on a flat table with the face of the clock inform up at the ceiling. See if the used includes a drawback wherever it starts and stops or maybe stops fully. If so, then it's probably that the little magnet has slipped backwards and is not any longer within the same horizontal plane because the metal of the magnet.
 this can be currently the second a part of this straightforward test: Flip the clock over in order that the force of gravity can pull the tiny magnet back to its correct position. The face of the clock can currently be facing down towards the ground.
        If your table is created out of glass then you'll be able to sit on the ground and appearance up through all-time low of the table to visualize if your clock is running properly. Or, you'll be able to simply choose the log up and hold it on top of your head to seem at it. you would like to stay it within the same horizontal downward facing position. If your clock works fine within the downward position however not within the upward position, then you have got a misaligned magnet.
 take away the tiny black plastic box from the rear of your clock. this can be the box that holds the AA battery within the back and also the clock hands on the front. it's known as a stepping-type clock movement. To do this, begin by removing the clear plastic cowl on the front of the clock. it always has three plastic tabs or indents round the periphery. See if you'll be able to find wherever these three tabs area unit.

    Use atiny low flat screwdriver to carefully pry these three tabs loose and take away the clear plastic front cowl.

    Gently take away the three clock hands, (the used, the big hand, and so the hour hand). simply pull outward (on one hand at a time) and that they can pop off. place them during a little instrumentality off to the facet to stay them safe. strive to not drop them on the ground and particularly to not step them.

    On the rear of your clock, there area unit a pair of massive black plastic tabs or hooks that firmly mount the clock movement to the rear of the clock. Gently pry these a pair of tabs outward simply enough to permit you to get rid of the clock movement from the rear of your clock.
 take away the battery.

    Open up the clock movement and appearance within. to try and do this you would like to get rid of the black plastic cowl on the rear of your clock movement. Be careful. it's three unharness tabs, not 2. there's a hard-to-see tab within the middle of the battery compartment. strive to not break any of those tabs as a result of you would like them to carry your clock movement along. Gently take away the rear cowl and appearance within. If any of the tiny white plastic gears have fallen out of their correct position, then place them back.

 inform yourself with the elements within your clock movement.
        See {the little|the little|the tiny|the insufficient|the limited|the miscroscopic} card? There area unit a pair of terribly small copper wires that connect this circuit board to a wire coil mounted beneath. strive to not break these wires. they're solely zero.003 inches in diameter and area unit terribly fragile. Please notice that the coil of wire is wrapped around one leg of a comparatively massive "U" formed piece of flat metal. These a pair of items along type associate magnet.
 once electrical phenomenon flows within the coil of wire then it makes the iron-alloy metal core become magnetic. there's associate air gap at the open finish of the "U". this can be wherever the tiny magnet goes. Together, these three elements type a Levat sort motor. The magnet is created within the form of a toroid, (or donut).
 hooked up to at least one facet of the magnet may be a cabbage butterfly plastic gear with teeth thereon. it's known as a rotor as a result of it "rotates", (i.e., it spins around in a circle sort of a bicycle tire). there's associate shaft or very little plastic rod that goes at ninety degrees all over the middle of our magnetic toroid. the tiny magnet should be lined up right within the middle of the flat metal that surrounds it, (i.e., the electromagnet), alternatively our very little motor does not run o.k..
        One finish of this tiny plastic shaft for our rotor goes into to a small degree hole that is found within the black plastic cowl that you took off. this tiny hole is just too deep! this can be the complete drawback. we want to scale back the depth of this hole during a precise manner. Doing thus can probably modify the clock to figure absolutely for several years to come back. The difficult question here is "How will we do this? however will we live or somehow verify simply precisely however deep this hole ought to be? conjointly, however will we then refill all-time low of this hole during a precise manner, (to inside some thousandth's of associate inch)?"

 check that that you have placed the precise hole within the back cowl that's meant for holding the stepper-motor rotor in situ. Open up the opening in order that it goes all the manner through. strive to not use atiny low drill. you would possibly scuff the edges of the opening. this might considerably speed up the speed at that these plastic elements would wear out.
 rely on it. you would like your clock to run a few years to come back. this implies that your very little rotor are spinning in situ and rubbing against the within of this hole day and night for several years. For long life, it's necessary that at the places wherever plastic rubs up against plastic that each surfaces ought to be terribly swish.
        No, a drill isn't suggested. The necessary factor is that it's created out of hardened steel which the tip. The plastic wall at the rear of this hole is merely concerning 1/64 th of an in. thick. simply pushing thereon (from within the hole) with the proper style of sharp, pointy metal tool can poke a hole all the manner through.
 the precise size of this hole might vary from manufacturer to manufacturer, thus it's within the vary of zero.025 to 0.050 inches in diameter ( ساعت دیواری طرح قهوه ) Once you have poked a hole through the rear wall from the within, then flip the rear cowl around and clean it up from the skin. you would like the opening to be nicely opened-up in order that you'll be able to get at it from the rear, (while the clock is running during a face-down position).
 you're aiming to place glue down this hole, a special sort of glue. it's known as "Plastic Fusion" and you get it at a store for HVAC known as Grainger's. (Do a Google search on the web to seek out close toest|the closest} Grainger's store near you.
        Also, you would like sensible air ventilation as a result of the fumes from this glue area unit noxious. browse the cautions on the rear label.) it's a 2-part glue and is incredibly thick. you would like the glue to fill the top of this hole no end the rotor from spinning. Use machine gasoline on the tip of the rotor shaft shaft in order that the glue wouldn't continue the rotor and it'd be absolve to keep spinning. it's vital that the clock run and keep running the complete time that this glue is drying.
 you would like the glue to stay to the rear cowl of your clock movement however to not the rotor itself. to try and do this you would like to watch out to not place oil on the skin of the rear cowl close to the opening. However, you are doing desire a touch of oil down within the hole on the tip of the rotor shaft shaft. The safest thanks to management wherever the oil will and does not go is as follows. Before golf shot the rear cowl on, dip the tip of the rotor shaft shaft into to a small degree gasoline. Wipe off most of the oil by gently touching it to a clean, dry surface many times. Use the table prime of my work bench. place the rotor back within the motor.
        Be terribly careful that the shaft shaft of the rotor is inform straight up and down and not off to the facet to a small degree bit. The rotor itself may be a very little magnet and also the metal it sits next to is additionally slightly magnetic. the key to creating the rotor get on my feet straight is to rotate it by forty five degrees or ninety degrees in order that its own field is correctly aligned with the residual magnetic fields of the 2 items of metal on either facet of the rotor. simply play with it, you will get it. If the rotor shaft shaft isn't straight up and down after you place the rear cowl on, then you may break one thing, (the very little shaft socket towards the front of the clock). it's doable to repair an opening like this however it's terribly finical. simply watch out and do not break it, OK?

    Gently place the rear cowl on whereas keeping the clock movement during a face-down position. Oil might try and kick off the opening. Gently dab it off to stay the encircling space dry. you'll value {more highly to|favor to|opt to} use one thing more applicable, sort of a rag or tissue.

 place the battery within the clock in order that it runs. you'll wish to briefly place the used back on the clock to verify that it's running properly whereas during a face-down position. Take the used off once more as a result of it gets within the manner whereas you're attempting to try and do the gluing. strive victimization spool of solder (because it's a hole within the middle), as an area wherever you'll be able to set the clock movement down during a face-down position. you'll have another item, (such as to a small degree picket board with a hole in it), that's convenient for you.

 misunderstanding your 2-part glue and gently push to a small degree little bit of it down the opening. This last half is a lot of art than science. Use your best judgement. it's higher to err on the facet of deficient glue down the opening instead of an excessive amount of.

 place an enormous clod of glue (~ 1/3 in. in diameter) round the whole space. the tiny clod of glue down the opening has nothing to stay to thanks to the oil. What holds it in situ is that the massive clod of glue. it's vital that the clock keeps running for the complete time that the glue is drying. It takes the glue concerning associate hour or a pair of to dry.

تاریخ ارسال: یکشنبه 29 دی 1392 ساعت 15:25
( تعداد کل: 71 )
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