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growler

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Mark/Wi

01-18-2008 06:48:55




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I have an electrical testing instrument called a growler but I don"t know how to use it. Can someone tell me what the instrument can test for and how to use it? Thank you




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Aaron Ford

01-18-2008 19:08:40




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 Re: growler in reply to Mark/Wi, 01-18-2008 06:48:55  
At tech school, we used to charge automotive coils and let them set during visitation day. Charge her good and leave it and the charge migrates to the shell. Then set a "Do not touch!" sign next to it so that some poor fool will wonder why and touch it. You can always tell which one did. They jumped a foot in the air. Okay, it was kinda mean, but you could guarantee that someone would touch it if you put up a sign telling them not to.

Cheers,

Aaron

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skyharborcowboy

01-18-2008 17:28:09




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 Re: growler in reply to Mark/Wi, 01-18-2008 06:48:55  
A Funny Not So Funny Growler Story

I was in A&P School to be an aircraft mechanic and during the electrical class we had to test armatures with a growler. Anyway we were in the shop just b/s'ing at the bench and I was toggling the growler on and off for whatever reason. Without anyone of us thinking about it too much one of my fellow classmates reached over the growler and grabbed an armature. Needless to say, I happened to toggle the growler on just as he was directly over it with the armature in his hand. As you can imagine, that growlers magnetic field grabbed a hold of that armature so fast my friend couldn't let go of it fast enough and he blacked all of the fingernails on his right hand. It took him a few months to grow new fingernails!

Lesson learned for the day. We found out what a growler does and is capable of!

Joe

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jdemaris

01-18-2008 12:58:14




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 What about the grow? in reply to Mark/Wi, 01-18-2008 06:48:55  
You can do the probe-test with several types of test equipment if worried about the AC. The main thing the growler can do - is "growl" when you lay an old hacksaw blade over the armature and spin the armature slowly.
If it growls extra loud at you while the hacksaw blade flutters there's a defect in the armature.



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teddy52food

01-18-2008 10:44:04




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 Re: growler in reply to Mark/Wi, 01-18-2008 06:48:55  
The power in the probe goes through (at least it is supposed to ) a small bulb to show continuity or not. The small wattage going through may give a shock but will not hurt you. It is like the 2 prong 110 volt testers where you can plug in 1 probe and hold on to the other and the bulb will glow when you have the hot side of the outlet. On a growler with the 2 probes close together , that is used to check the windings in the armature.

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Bob

01-18-2008 14:13:10




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 Re: growler in reply to teddy52food, 01-18-2008 10:44:04  
The old growler I have uses a 7-1/2 Watt bulb.

Do the math, and you will see the lamp will pass enough current to potentially kill a human.

Not to mention the fact, when the bulb is not lit, and you touch the test lead, you will get QUITE a jolt 'cause of high inrush current into the COLD filament.



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K-Mo

01-18-2008 06:57:22




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 Re: growler in reply to Mark/Wi, 01-18-2008 06:48:55  
A growler is used to test starter and generator armatures.
What make is it?
Email me and I may be able to help.

K-Mo



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Bob

01-18-2008 06:56:14




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 Re: growler in reply to Mark/Wi, 01-18-2008 06:48:55  
Link

Link



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ldj

01-18-2008 07:45:22




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 Re: growler in reply to Bob, 01-18-2008 06:56:14  
I've got one of those. Mine has a regular house light bulb. The one in the photo has 2 probe plus that third thing. I believe mine only has 2 probes. I'll look again and see. Anyway I am afraid to use the thing. If you take the back off and trace the wires you will see that you have 110v to the probe. To make sure I put a volt meter on it and it has. Looks like you could get electrocuted if you touched the wrong thing.
L.D.

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Bob

01-18-2008 08:27:16




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 ZZZZZAP! in reply to ldj, 01-18-2008 07:45:22  
Yup, you're correct. If the plug is NOT polarized, as was the caase with the older ones, if plugged in one way, there's wall socket voltage one on of the probes. If plugged in the other way, the test lamp is in series between the "hot" probe" and 120 Volts, still flowing enough current to kill you! (SO FAR, mine hasn't "got" me, but I've had a nasty shock or two, over the years!)

Did you look at the NEW growler for sale at the "King" link" It APPEARS to have a GFI wall plug...

Third Party Image

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Jon Hagen

01-18-2008 09:58:07




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 Re: ZZZZZAP! in reply to Bob, 01-18-2008 08:27:16  
The GFCI plug would be a wise and not very costly addition to my two old Growlers, both having full line voltage to the test light/probes. Have used them for 30-40 years as is, but it seems as reflexes, coordination and eye sight fade, old guys die doing things they have got away with for so many years.



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335LP

01-18-2008 10:04:20




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 Re: ZZZZZAP! in reply to Jon Hagen, 01-18-2008 09:58:07  
Yes that GFCI plug would be a good idea. My old growler is in a blue metal case with wood socket holders for the 110V probes and it's bit me before when those probes weren't in the holders good touching metal case so always got to look twice before turning it on and be careful !!



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