[DeTomaso] Condenser relay

Rob Dumoulin rob at dumoulins.net
Wed Jun 29 14:32:12 EDT 2016


I second Joe's suggestion. I've had relays go bad for both reasons
mentioned though not on the Pantera. I have also had one with corrosive
leads that caused excessive heat and melted the relay and relay base enough
to be noticable and resulted in cycling the compressor until I noticed.
(also, not on the Pantera)

Rob DuMoulin
904.476.8744
rob at dumoulins.net
www.kbsi.co
http://www.linkedin.com/pub/rob-dumoulin/0/1b6/58

On Wed, Jun 29, 2016 at 2:05 PM, Joseph F. Byrd, Jr. <byrdjf at embarqmail.com>
wrote:

> In general the death of a relay is caused by
> 1) cycling
> 2) over current
>
> So having the relay heavy enough to carry the fan current is needed (I
> would
> prefer X2) BUT if it is cycled (on/off) with due to the AC thermostat, it
> will kill a relay.
>
> I haven't thought any at all about this circuit (and possible upgrades) but
> first look and I am thinking remove the condenser fan from the AC de icing
> switch.  Letting it run all the time the AC is on is first thought.  Using
> a
> pressure switch on dryer would be investigated (but that is getting more
> complicated) KISS
> Joe
>
> -----Original Message-----
> From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
> Of Mike Drew via DeTomaso
> Sent: Wednesday, June 29, 2016 13:48 PM
> To: nick mcintosh sr
> Cc: detomaso at server.detomasolist.com
> Subject: Re: [DeTomaso] Condenser relay
>
> Nick,
>
> More info please.
>
> Is it a stock relay or a modern replacement?
>
> Stock location, inside the cabin?
>
> Stock fan?
>
> I don't have any answers but more info might help the electrically smart
> people come up with the answer?
>
> Mike
>
> Sent from my iPhone
>
> On Jun 29, 2016, at 10:25, nick mcintosh sr <nick.mcintosh.sr at gmail.com>
> wrote:
>
> >   Does anyone know what would cause a condenser ran relay to go bad?
> >   I replaced one and a year later its bad again.
> >   Nick
> >   7252
> > _______________________________________________
> >
> >
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-------------- next part --------------
   I second Joe's suggestion. I've had relays go bad for both reasons
   mentioned though not on the Pantera. I have also had one with corrosive
   leads that caused excessive heat and melted the relay and relay base
   enough to be noticable and resulted in cycling the compressor until I
   noticed. (also, not on the Pantera)

   Rob DuMoulin
   904.476.8744
   [1]rob at dumoulins.net
   [2]www.kbsi.co
   [3]http://www.linkedin.com/pub/rob-dumoulin/0/1b6/58
   On Wed, Jun 29, 2016 at 2:05 PM, Joseph F. Byrd, Jr.
   <[4]byrdjf at embarqmail.com> wrote:

     In general the death of a relay is caused by
     1) cycling
     2) over current
     So having the relay heavy enough to carry the fan current is needed
     (I would
     prefer X2) BUT if it is cycled (on/off) with due to the AC
     thermostat, it
     will kill a relay.
     I haven't thought any at all about this circuit (and possible
     upgrades) but
     first look and I am thinking remove the condenser fan from the AC de
     icing
     switch.A  Letting it run all the time the AC is on is first
     thought.A  Using a
     pressure switch on dryer would be investigated (but that is getting
     more
     complicated) KISS
     Joe

   -----Original Message-----
   From: DeTomaso [mailto:[5]detomaso-bounces at server.detomasolist.com] On
   Behalf
   Of Mike Drew via DeTomaso
   Sent: Wednesday, June 29, 2016 13:48 PM
   To: nick mcintosh sr
   Cc: [6]detomaso at server.detomasolist.com
   Subject: Re: [DeTomaso] Condenser relay
   Nick,
   More info please.
   Is it a stock relay or a modern replacement?
   Stock location, inside the cabin?
   Stock fan?
   I don't have any answers but more info might help the electrically
   smart
   people come up with the answer?
   Mike
   Sent from my iPhone
   On Jun 29, 2016, at 10:25, nick mcintosh sr
   <[7]nick.mcintosh.sr at gmail.com>
   wrote:
   >A  A Does anyone know what would cause a condenser ran relay to go
   bad?
   >A  A I replaced one and a year later its bad again.
   >A  A Nick
   >A  A 7252
   > _______________________________________________
   >
   >
   > Detomaso Email List is not managed by POCA Posted emails must not
   > exceed 1.5 Megabytes DeTomaso mailing list
   > [8]DeTomaso at server.detomasolist.com
   > [9]http://server.detomasolist.com/mailman/listinfo/detomaso
   >
   > To manage your subscription (change email address, unsubscribe, etc.)
   use
   the links above.
   >
   > Members who post to this list grant license to the list to forward
   any
   message posted here to all past, current, or future members of the
   list.
   They also grant the list owner permission to maintain an archive or
   approve
   the archiving of list messages.
   _______________________________________________
   Detomaso Email List is not managed by POCA Posted emails must not
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   Megabytes DeTomaso mailing list [10]DeTomaso at server.detomasolist.com
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References

   1. mailto:rob at dumoulins.net
   2. http://www.kbsi.co/
   3. http://www.linkedin.com/pub/rob-dumoulin/0/1b6/58
   4. mailto:byrdjf at embarqmail.com
   5. mailto:detomaso-bounces at server.detomasolist.com
   6. mailto:detomaso at server.detomasolist.com
   7. mailto:nick.mcintosh.sr at gmail.com
   8. mailto:DeTomaso at server.detomasolist.com
   9. http://server.detomasolist.com/mailman/listinfo/detomaso
  10. mailto:DeTomaso at server.detomasolist.com
  11. http://server.detomasolist.com/mailman/listinfo/detomaso
  12. mailto:DeTomaso at server.detomasolist.com
  13. http://server.detomasolist.com/mailman/listinfo/detomaso


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