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Paul, hook her back up like normal, read the
pack voltage..should be about 36vdc, turn on the charger an it should jump to
about 38 - 39vdc as the pack charges it may go up to 41 to 42 vdc, if this
happens then all is working.
I read the pack voltage at...+ at the main
disconnect and the - at wire #4 on the shunt plate under the PTO relay under the
dash.
Jerry
----- Original Message -----
Sent: Monday, May 11, 2009 11:30 AM
Subject: Re: (ET) FW: charger
problem
I'm not sure I know how to measure the output voltage.
When I put the voltmeter leads on the - and + posts of one of my batteries, I
get 6 volts. Following the instructions in the manual (pp 1-18 and
1-19), I opened the power disconnect, removed wires #2 and #30 from the
charger base, and placed the charger near the tractor, and turned the charger
on. I nected removed both diodes from the heat plate and tried to
measure the voltage across them. It reading just kept bouncing around
eratically. Similarly when I tried to measure the voltage from each
diode to S3.
----- Original Message -----
From:
"Jerry Rhodes" <jerry38 alltel net>
To: "Tim Humphrey"
<hump evgrin com>, Elec-trak cosmos phy tufts edu
Sent: Monday, May
11, 2009 11:10:41 AM GMT -05:00 US/Canada Eastern
Subject: Re: (ET) FW:
charger problem
Along with Tim & RJ, what is the output
voltage??
Jerry
----- Original Message -----
Sent: Monday, May 11, 2009 11:06
AM
Subject: Re: (ET) FW: charger
problem
Well, I've had two cups so far and I'll have to agree with
RJ;
The harder the charger works, the louder it hums.
-----Original Message-----
From: elec-trak-bounces cosmos phy tufts edu [mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of RJ
Kanary
Sent: Monday, May 11, 2009 10:33 AM
To: paul mitchell2007 comcast net
Cc: Elec-trak
tufts
Subject: Re: (ET) charger problem
I'm confused.{ But then it IS Monday morning, and
I've had but one cup of coffee.} What flavor of ET are we working on? The
first charger diagram I pulled up (since I'm just guessing. <G>)
shows an S1 and an S3 but no S2.
Wire 30 goes to CB-2.It HAS to be there, or the charger's output is
not directed to the battery pack. The loud humming noise you hear when
it's connected could well be the sound of the charger doing exactly what
it's supposed to be doing. Charging. :)
What
conditions existed previously to start this investigation?
Fetching
that much needed second cup of Joe........
RJ
paul mitchell2007 comcast net wrote:
Hi,
My
charger hums quietly when plugged in and the #30 wire from the circuit
breaker is not attached to S2 on the charger, but when attached to S2,
makes a very loud humming noise. The capacitor is brand new and I a
local alternator shop that rebuilt all my tractor motors told me that the
diodes are fine (they recently replaced them). The resistance from
each diode to the heat plate measures zero. Any ideas? Do I
need a new heat plate? If so, where do I get
one?
Thanks!
Paul
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