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Re: (ET) Seem to have lost speed 3 on New Idea 150
Hi,
Thank you so much Harold and RJ.
It was the 1A switch. I listened for the speed controller clicks with the
key off and could only hear 2 microswitch clicks in reverse and 6 froward,
missing 1 click each way. Closer examination revealed that the yellow
button was not visible on the 1A microswitch. It was jammed in but did not
make contact. Replaced it with a spare and everything is back to normal!
Again, Thank You. You just made my Christmas much merrier!
On Dec 27, 2010, at 1:53 PM, Clean Power Supply wrote:
> Dean,
> Your results tell me that your 1A contactor is not receiving activating
> voltage.Now you'll need to back track and find out why not. 1A Switch is
> a definite possibility.It is one of the small limit switches on your
> hand speed control.The boook should point out which one.
> Sincerely,
> Harold Z.
> On December 27, 2010 at 11:40am -0600, you wrote:
>> Well I'm finally getting around to test the relays and here are the
>> readings I get with full throttle. FYI - I'm still thinking it may be
>> the second speed that is out since the throttle is near the gate limit
>> in reverse when it changes speed.
>>
>> 1A large studs = 3.8 V
>> 1A small studs = 0 V
>> According to the E16 manual test 1 of missed second speed I should
>> replace the 1A contactor because I don't have 36 V on the small studs
>> but test 2 says when I have 0V, I should replace 1A switch (what and
>> where is this?) .
>>
>> 2A large studs = 200 MV
>> 2A small studs = 35.8 V
>> Again, according to the E16 manual test of missed third speed I should
>> replace the 2A contactor because I don't have 4 V on the large studs.
>>
>> I'm no electrician so what is this telling me? Could everything be
>> haywire at once or am I misreading the causes of the test values?
>>
>> Thanx
>> Dean
>>
>> On Dec 23, 2010, at 6:03 AM, RJ Kanary wrote:
>>
>>> <When engaging the "throttle", the 2AH relay closes (but slower than
>>> the RTN relay). As I go thru the speeds the 2AH never releases. Should
>>> it?>
>>>
>>> That is as it should be.If the traction motor is not heavily
>>> loaded, the relay should pick up in First speed.
>>>
>>> <The way I read the EGT Circuitry manual, 2AH should not engage until
>>> speed 3 is hit.>
>>>
>>>
>>> Much was lost in the translation from the GE manual to the
>>> NI manual. :(
>>>
>>>
>>> So, if 2A contactor coil voltage is present, and the return side
>>> of the coil circuit is intact,the only suspect remaining would be an
>>> issue within the contactor itself.If the insulation bushings for the
>>> large studs soften, the contacts can recede enough that the disc hits
>>> the bushings before it can find the contacts. The armature reversing
>>> contactors can also suffer this fate but that will be something to
>>> look forward to in the future.
>>>
>>> {As Bill Gunn would counsel, keep those high current connections
>>> clean and tight. Check them annually.}
>>>
>>> RJ
>>>
>>>
>>> Dean Stuckmann wrote:
>>>>
>>>> When engaging the "throttle", the 2AH relay closes (but slower than
>>>> the RTN relay). As I go thru the speeds the 2AH never releases.
>>>> Should it? The way I read the EGT Circuitry manual, 2AH should not
>>>> engage until speed 3 is hit.
>>>>
>>>> I agree, the NI manuals suck, especially when I don't have an
>>>> electrical background.
>>>> Dean
>>>>
>>>>
>>>> On Dec 22, 2010, at 8:27 PM, RJ Kanary wrote:
>>>>
>>>>> Verify the operation of the 2AH Relay that is the final
>>>>> arbiter when it comes to full armature voltage.No 2AH closure, no
>>>>> 3rd speed, no 3rd speed means no Field Weakening so you lose all the
>>>>> rest of them too.
>>>>>
>>>>> BTW the GE diagrams are far easier to follow than the clones
>>>>> used by NI. :)
>>>>>
>>>>> RJ
>>>>>
>>>>> Dean Stuckmann wrote:
>>>>>>
>>>>>> Pretty sure it should have 7 F and 3 R...
>>>>>> Maybe its 2nd that dropped instead of 3rd. Just trying to judge it
>>>>>> by how far I have to move the lever to have it change speeds...
>>>>>> Thanx
>>>>>>
>>>>>> On Dec 22, 2010, at 3:37 PM, RJ Kanary wrote:
>>>>>>
>>>>>>> The NI service information is available at
>>>>>>>
>>>>>>> http://www.elec-trak.com/
>>>>>>>
>>>>>>>
>>>>>>> How many traction motor speeds is this tractor supposed to have
>>>>>>> ? I've never seen any NI tractors here in Western Pennsylvania.
>>>>>>>
>>>>>>> RJ
>>>>>>>
>>>>>>>
>>>>>>> Dean Stuckmann wrote:
>>>>>>>>
>>>>>>>> Hi,
>>>>>>>> I think I dropped speed 3.
>>>>>>>> There are only 2 speeds in reverse as well.
>>>>>>>> It will go into the higher speeds (but still seems to skip 3) if
>>>>>>>> the load is small, but its reluctant to go faster when blowing
>>>>>>>> snow.
>>>>>>>> Power pulse button does not want to work either.
>
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