| JC4 Vacuum Pump Problem [message #132996] |
Fri, 01 July 2011 14:03  |
larry.whisler
Messages: 356
Registered: August 2005
Karma: 8
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Senior Member |
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What needs to be done to the JC4 vacuum pump to get it to run?
I have connected the A & C pins to ground and the B & D pins to 12 Volt positve power source but cannot get it to run.
Is there some other signal that needs to go to the remaining two pins?
I have two pumps and neither works. I am stumped.
larry whisler
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| Re: [GMCnet] JC4 Vacuum Pump Problem [message #133213 is a reply to message #133204] |
Sun, 03 July 2011 16:52  |
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By their design, MOST all battery chargers are not intended to power
ANYTHING. They are to charge batteries. They tend to produce very poorly
filtered DC (one theory being that pulsed DC charges batteries better.
The "dumb" chargers produce much higher than 12V out until they see the
load of the battery and so-called "smart" chargers produce NO voltage
until they do their battery-type analysis.
On 7/3/2011 12:22 PM, larry.whisler wrote:
>
> Today I connected the vacuum pump to the battery. About 6 seconds later it kicked in and ran.
>
> I guess the battery charger did not supply enough voltage to run the pump.
>
> Got the pump installed and it seems to be working very well.
>
> thanks again for all of the input.
>
> larry
>
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Terry Taylor
'74 ex-Eleganza SE
San Lorenzo, CA
http://www.n6mon.org
http://dldesignstore.com
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| Re: [GMCnet] JC4 Vacuum Pump Problem [message #133218 is a reply to message #133213] |
Sun, 03 July 2011 17:35 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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I have no idea as to the output waveform of the
two new PD-9245 units I just received, but the
no load voltage is close to 13.55V on each.
Until I recieved N6MON's note below, I was
planning to ask if they could be used as a
power supply (without a battery load) but
as I suspected, probably not.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~~ ~ ~ (TZE166V101966) ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> Date: Sun, 3 Jul 2011 14:52:40 -0700
> From: n6mon@pacbell.net
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] JC4 Vacuum Pump Problem
>
> By their design, MOST all battery chargers are not intended to power
> ANYTHING. They are to charge batteries. They tend to produce very poorly
> filtered DC (one theory being that pulsed DC charges batteries better.
> The "dumb" chargers produce much higher than 12V out until they see the
> load of the battery and so-called "smart" chargers produce NO voltage
> until they do their battery-type analysis.
>
> On 7/3/2011 12:22 PM, larry.whisler wrote:
> >
> > Today I connected the vacuum pump to the battery. About 6 seconds later it kicked in and ran.
> >
> > I guess the battery charger did not supply enough voltage to run the pump.
> >
> > Got the pump installed and it seems to be working very well.
> >
> > thanks again for all of the input.
> >
> > larry
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| Re: [GMCnet] JC4 Vacuum Pump Problem [message #133219 is a reply to message #133218] |
Sun, 03 July 2011 17:40 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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Mac,
I have a PD 45 amp, not yet installed. When I installed landscape lights I used it for the power source -- until I decided on an outdoor installed transformer with timer and light activation.
Some have alos mentioned using their old buzz box for landscape lights or a bench top power supply.
Dennis Sexton
73 GMC
Germantown, TN
USA
-----Original Message-----
From: D C *Mac* Macdonald <k2gkk@hotmail.com>
To: gmclist@temp.gmcnet.org
Sent: Sun, Jul 3, 2011 5:35 pm
Subject: Re: [GMCnet] JC4 Vacuum Pump Problem
have no idea as to the output waveform of the
wo new PD-9245 units I just received, but the
o load voltage is close to 13.55V on each.
ntil I recieved N6MON's note below, I was
lanning to ask if they could be used as a
ower supply (without a battery load) but
s I suspected, probably not.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~ ~ D C "Mac" Macdonald ~ ~~
~ Amateur Radio - K2GKK ~ ~
~ USAF and FAA, Retired ~ ~
~ ~ Oklahoma City, OK ~ ~ ~
~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ (TZE166V101966) ~ ~ ~~
~ ~ ex-Palm Beach, 76 ~ ~ ~
www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> Date: Sun, 3 Jul 2011 14:52:40 -0700
From: n6mon@pacbell.net
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] JC4 Vacuum Pump Problem
By their design, MOST all battery chargers are not intended to power
ANYTHING. They are to charge batteries. They tend to produce very poorly
filtered DC (one theory being that pulsed DC charges batteries better.
The "dumb" chargers produce much higher than 12V out until they see the
load of the battery and so-called "smart" chargers produce NO voltage
until they do their battery-type analysis.
On 7/3/2011 12:22 PM, larry.whisler wrote:
>
> Today I connected the vacuum pump to the battery. About 6 seconds later it
icked in and ran.
>
> I guess the battery charger did not supply enough voltage to run the pump.
>
> Got the pump installed and it seems to be working very well.
>
> thanks again for all of the input.
>
> larry
______________________________________________
MCnet mailing list
nsubscribe or Change List Options:
ttp://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
=
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] JC4 Vacuum Pump Problem [message #133220 is a reply to message #133218] |
Sun, 03 July 2011 17:41 |
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I have not looked at the PD converters, but they are strictly speaking,
not battery chargers (although that IS one of their functions), they are
power converters and may work standalone. They are switching power
supplies and DO generate some RFI in the (if I remember right) 40M band
(at least the 2 that I have looked at do). I have a dead PD9245 to look
at and see if I can resurrect it. Hopefully I will then look at it
standalone and see what it looks like.
On 7/3/2011 3:35 PM, D C *Mac* Macdonald wrote:
> I have no idea as to the output waveform of the
> two new PD-9245 units I just received, but the
> no load voltage is close to 13.55V on each.
>
> Until I recieved N6MON's note below, I was
> planning to ask if they could be used as a
> power supply (without a battery load) but
> as I suspected, probably not.
>
>
> By their design, MOST all battery chargers are not intended to power
> ANYTHING. They are to charge batteries. They tend to produce very poorly
> filtered DC (one theory being that pulsed DC charges batteries better.
> The "dumb" chargers produce much higher than 12V out until they see the
> load of the battery and so-called "smart" chargers produce NO voltage
> until they do their battery-type analysis.
>
> On 7/3/2011 12:22 PM, larry.whisler wrote:
>
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Unsubscribe or Change List Options:
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Terry Taylor
'74 ex-Eleganza SE
San Lorenzo, CA
http://www.n6mon.org
http://dldesignstore.com
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| Re: [GMCnet] JC4 Vacuum Pump Problem [message #133224 is a reply to message #133219] |
Sun, 03 July 2011 17:57 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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|
I have a large three-output converter/charger with one shorted
output from my boat which was destroyed in a February storm.
One of these days, I will take a whack at fixing that short. It has
a pretty good output capability. I think it is a ferro-resonant unit.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~~ ~ ~ (TZE166V101966) ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> To: gmclist@temp.gmcnet.org
> Date: Sun, 3 Jul 2011 18:40:44 -0400
> From: dennisfsexton@aol.com
> Subject: Re: [GMCnet] JC4 Vacuum Pump Problem
>
>
> Mac,
>
> I have a PD 45 amp, not yet installed. When I installed landscape lights I used it for the power source -- until I decided on an outdoor installed transformer with timer and light activation.
>
> Some have alos mentioned using their old buzz box for landscape lights or a bench top power supply.
>
> Dennis Sexton
> 73 GMC
> Germantown, TN
> USA
>
>
>
> -----Original Message-----
> From: D C *Mac* Macdonald <k2gkk@hotmail.com>
> To: gmclist@temp.gmcnet.org
> Sent: Sun, Jul 3, 2011 5:35 pm
> Subject: Re: [GMCnet] JC4 Vacuum Pump Problem
>
>
>
> have no idea as to the output waveform of the
> wo new PD-9245 units I just received, but the
> o load voltage is close to 13.55V on each.
>
> ntil I recieved N6MON's note below, I was
> lanning to ask if they could be used as a
> ower supply (without a battery load) but
> s I suspected, probably not.
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ~ ~ D C "Mac" Macdonald ~ ~~
> ~ Amateur Radio - K2GKK ~ ~
> ~ USAF and FAA, Retired ~ ~
> ~ ~ Oklahoma City, OK ~ ~ ~
> ~ ~ ~ "The Money Pit" ~ ~ ~~
> ~ ~ ~ (TZE166V101966) ~ ~ ~~
> ~ ~ ex-Palm Beach, 76 ~ ~ ~
> www.gmcmhphotos.com/okclb ~
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
>
>
> > Date: Sun, 3 Jul 2011 14:52:40 -0700
> From: n6mon@pacbell.net
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] JC4 Vacuum Pump Problem
>
> By their design, MOST all battery chargers are not intended to power
> ANYTHING. They are to charge batteries. They tend to produce very poorly
> filtered DC (one theory being that pulsed DC charges batteries better.
> The "dumb" chargers produce much higher than 12V out until they see the
> load of the battery and so-called "smart" chargers produce NO voltage
> until they do their battery-type analysis.
>
> On 7/3/2011 12:22 PM, larry.whisler wrote:
> >
> > Today I connected the vacuum pump to the battery. About 6 seconds later it
> icked in and ran.
> >
> > I guess the battery charger did not supply enough voltage to run the pump.
> >
> > Got the pump installed and it seems to be working very well.
> >
> > thanks again for all of the input.
> >
> > larry
>
> ______________________________________________
> MCnet mailing list
> nsubscribe or Change List Options:
> ttp://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> =
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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| Re: [GMCnet] JC4 Vacuum Pump Problem [message #133546 is a reply to message #133213] |
Wed, 06 July 2011 18:23 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
Karma: 0
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Senior Member |
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I have one of those "smart alek" chargers.
Here is what I know.... If your battery is dead, no voltage, the charger will not work.
If the battery is very low voltage, the battery charger will not work.
We tried to charge a low battery and the charger acted like there was no battery. We had to connect another 12v battery to get the charger to kick on. Once the battery built up some voltage, the second battery could be removed and the charger continued to charge the battery in question.
If the "smart alek" charger is connected to a device other than a battery, it will not work because it does not sense voltage.
I like the charger when it works but sometimes my batteries are dead, and that makes charging them more difficult.
Some of these "smart alek" chargers also sense polarities and wont work if it is wrong.
I was told that the charger is intended to sense voltage to prevent igniting the explosive gas the battery can emit. It is a safety thought, that works for one thing and not so good for another.
My thoughts
Gatsbys' CRUISER  08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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| Re: [GMCnet] JC4 Vacuum Pump Problem [message #133564 is a reply to message #133546] |
Wed, 06 July 2011 20:21 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| Larry C wrote on Wed, 06 July 2011 16:23 |
I have one of those "smart alek" chargers.
Here is what I know.... If your battery is dead, no voltage, the charger will not work.
If the battery is very low voltage, the battery charger will not work. ...
|
I have one (of those "smart alek" chargers) that keeps thinking my Audi battery is a 6v battery and will not provide more than 7.5 volts. It WILL NOT go into manual mode even though there is a button that says "manual."
Sometimes you want "dumb" things. 
The Audi has a draw on the battery that, if not driven every couple of weeks, will draw the battery down below what the charger thinks is a 12 volt battery. I keep a "tender" on it now...
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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