Home » Public Forums » GMCnet » [GMCnet] macerator problem
| [GMCnet] macerator problem [message #27606] |
Fri, 14 November 2008 04:32  |
bill schurman
Messages: 97
Registered: February 2004
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I installed last summer the Denny Allen kit that I purchased at the Estes Park rally several years ago. I believe that I followed the installation instructions to a "T". When using the pump to unload the waste tank it will only run for several minutes and shut off. After several more minutes of waiting it will run for a short time and shut off. This recycling will go on and on. What is the answer to eliminate this problem?
Bill Schurman
1978 Palm Beach TZE168V100258
Steamboat Springs, CO
at the base of "Rabbit Ears Pass"
With a 7% grade
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| Re: [GMCnet] macerator problem [message #27608 is a reply to message #27607] |
Fri, 14 November 2008 06:13  |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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Low voltage can also be caused by a poor ground. (You can check it with a set of jumper cables.)
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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| Re: [GMCnet] macerator problem [message #27630 is a reply to message #27606] |
Fri, 14 November 2008 08:20 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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something else may be going on here
Never, Ever, Ever, Never run your macerator dry. stop when the sound
changes, ( mine takes less than 2 min with a full tank).
It is just not necessary to get the tank completely dry. In fact it is
better to leave about 3 gal in there for the next time to keep the solids
from piling up in our thin (4" ) tanks.
If possible, dump only when you arrive, not when leaving the camp ground.
this will keep everything stirred up ( while you are rocking down the
highway) and liquid when dumping. This way there is never any buildup in
the bottom of the tank and not necessary to flush the tank when you dump.
You may be running the Macerator dry and getting the rubber impeller hot and
it will stick. Also, if you have been doing this, you now need a new
impeller.
gene
On Fri, Nov 14, 2008 at 2:32 AM, bill schurman <tubby123@aemail4u.com>wrote:
> I installed last summer the Denny Allen kit that I purchased at the Estes
> Park rally several years ago. I believe that I followed the installation
> instructions to a "T". When using the pump to unload the waste tank it will
> only run for several minutes and shut off. After several more minutes of
> waiting it will run for a short time and shut off. This recycling will go on
> and on. What is the answer to eliminate this problem?
>
> Bill Schurman
> 1978 Palm Beach TZE168V100258
> Steamboat Springs, CO
> at the base of "Rabbit Ears Pass"
> With a 7% grade
> _______________________________________________
> GMCnet mailing list
> Gmclist@temp.gmcnet.org
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
"Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhomeinfo.com/
Alternator Protection Cable
http://gmcmotorhomeinfo.com/APC.html
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| Re: [GMCnet] macerator problem [message #27641 is a reply to message #27606] |
Fri, 14 November 2008 08:58 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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| bill schurman wrote on Fri, 14 November 2008 04:32 |
I installed last summer the Denny Allen kit that I purchased at the Estes Park rally several years ago. I believe that I followed the installation instructions to a "T". When using the pump to unload the waste tank it will only run for several minutes and shut off. After several more minutes of waiting it will run for a short time and shut off. This recycling will go on and on. What is the answer to eliminate this problem?
Bill Schurman
1978 Palm Beach TZE168V100258
Steamboat Springs, CO
at the base of "Rabbit Ears Pass"
With a 7% grade
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First, I do not think I have ever run mine for more than two minutes to completely empty the tank.
Something strange here. This sounds like you have an automatic reset circuit breaker in the +12 volt power lead or you are running low voltage and overheating the motor.
Where are you obtaining your power from? I assume it is from rear mounted house batteries. If so, then the next question is where are you getting the ground for the motor from? The house batteries ae grounded to the body of the coach and NOT the frame. There two jumpers that connect the body to the frame. If these braided jumpers are not making a good connection then this could be your problem.
I would get across the motor connections with a volt meter and read the voltage while dumping / running the motor (under load). If the voltage goes below 12 volts I would start looking for the voltage drop. If you have low voltage then you need to look at the wiring connections and especially the ground path. 12 gage wire will easily handle 30 amps for short runs like 10 or 12 feet and I know mine draws less than 20 because I have a 20 amp fuse in line with mine. I can not remember what Denny supplied with the kit (probably 12 or 14) but I used his wire with no problems. So if you used his wire you should be OK.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] macerator problem [message #27710 is a reply to message #27705] |
Fri, 14 November 2008 17:51 |
Gary Worobec
Messages: 867
Registered: May 2005
Karma: -1
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A macerator can easily draw 20 amps. It might have a thermal overload that
is shutting it down. How far and what size wire are you using. Might be a
big voltage drop that just stops it if the wire is too small.
Thanks,
Gary and Joanne Worobec
Anza, CA
1973 23' Glacier
----- Original Message -----
From: "bill schurman" <tubby123@aemail4u.com>
To: <gmclist@temp.gmcnet.org>; "Emery Stora" <emerystora@mac.com>
Sent: Friday, November 14, 2008 3:08 PM
Subject: Re: [GMCnet] macerator problem
> Emery,
>
> The flow is steady but not strong and then it shuts off. I immediately
> shut it off. After a minute or two I turn it back on and I get a small
> flow and it stops. As far as Irmal know it is not clogged as I am always
> careful to close the toilet seat so as to not let anything fall down (so
> far I am the only user of the coach). Am I simply not getting enough juice
> to the pump akin to the air compressor? My ground is to the generator
> ground. Is that a good ground? Should I ground by the house battery
> ground?
>
> Bill Schurman
> 1978 Palm Beach TZE168V100258
> Steamboat Springs, CO
> at the base of "Rabbit Ears Pass"
> With a 7% grade
>
> --- emerystora@mac.com wrote:
>
> From: Emery Stora <emerystora@mac.com>
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] macerator problem
> Date: Fri, 14 Nov 2008 13:54:35 -0700
>
>
> On Nov 14, 2008, at 3:32 AM, bill schurman wrote:
>
>> I installed last summer the Denny Allen kit that I purchased at the
>> Estes Park rally several years ago. I believe that I followed the
>> installation instructions to a "T". When using the pump to unload
>> the waste tank it will only run for several minutes and shut off.
>> After several more minutes of waiting it will run for a short time
>> and shut off. This recycling will go on and on. What is the answer
>> to eliminate this problem?
>>
>> Bill Schurman
>> 1978 Palm Beach TZE168V100258
>> Steamboat Springs, CO
>> at the base of "Rabbit Ears Pass"
>> With a 7% grade
>>
>
> Bill - I am concerned with your saying "several minutes". It only
> takes about 3 minutes to pump out about 30 or 35 gallons from my
> holding tank.
>
> If yours is running for several minutes and turning on and off then it
> is running dry and overheating and the internal thermal switch in the
> motor is turning it off until it cools.
>
> Could your inlet to the pump be clogged?
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>
>
> _______________________________________________
> GMCnet mailing list
> Gmclist@temp.gmcnet.org
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
>
> _______________________________________________
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> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] macerator problem [message #27712 is a reply to message #27606] |
Fri, 14 November 2008 18:18 |
bill schurman
Messages: 97
Registered: February 2004
Karma: 0
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Next Spring I'm going to re wire with heavier gauge wire and report back. If that still doesn't work then I'll try Emery's advice.
Bill Schurman
1978 Palm Beach TZE168V100258
Steamboat Springs, CO
at the base of "Rabbit Ears Pass"
With a 7% grade
--- gtw5@earthlink.net wrote:
From: "Gary Worobec" <gtw5@earthlink.net>
To: <gmclist@temp.gmcnet.org>
Subject: Re: [GMCnet] macerator problem
Date: Fri, 14 Nov 2008 15:51:07 -0800
A macerator can easily draw 20 amps. It might have a thermal overload that
is shutting it down. How far and what size wire are you using. Might be a
big voltage drop that just stops it if the wire is too small.
Thanks,
Gary and Joanne Worobec
Anza, CA
1973 23' Glacier
----- Original Message -----
From: "bill schurman" <tubby123@aemail4u.com>
To: <gmclist@temp.gmcnet.org>; "Emery Stora" <emerystora@mac.com>
Sent: Friday, November 14, 2008 3:08 PM
Subject: Re: [GMCnet] macerator problem
> Emery,
>
> The flow is steady but not strong and then it shuts off. I immediately
> shut it off. After a minute or two I turn it back on and I get a small
> flow and it stops. As far as Irmal know it is not clogged as I am always
> careful to close the toilet seat so as to not let anything fall down (so
> far I am the only user of the coach). Am I simply not getting enough juice
> to the pump akin to the air compressor? My ground is to the generator
> ground. Is that a good ground? Should I ground by the house battery
> ground?
>
> Bill Schurman
> 1978 Palm Beach TZE168V100258
> Steamboat Springs, CO
> at the base of "Rabbit Ears Pass"
> With a 7% grade
>
> --- emerystora@mac.com wrote:
>
> From: Emery Stora <emerystora@mac.com>
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] macerator problem
> Date: Fri, 14 Nov 2008 13:54:35 -0700
>
>
> On Nov 14, 2008, at 3:32 AM, bill schurman wrote:
>
>> I installed last summer the Denny Allen kit that I purchased at the
>> Estes Park rally several years ago. I believe that I followed the
>> installation instructions to a "T". When using the pump to unload
>> the waste tank it will only run for several minutes and shut off.
>> After several more minutes of waiting it will run for a short time
>> and shut off. This recycling will go on and on. What is the answer
>> to eliminate this problem?
>>
>> Bill Schurman
>> 1978 Palm Beach TZE168V100258
>> Steamboat Springs, CO
>> at the base of "Rabbit Ears Pass"
>> With a 7% grade
>>
>
> Bill - I am concerned with your saying "several minutes". It only
> takes about 3 minutes to pump out about 30 or 35 gallons from my
> holding tank.
>
> If yours is running for several minutes and turning on and off then it
> is running dry and overheating and the internal thermal switch in the
> motor is turning it off until it cools.
>
> Could your inlet to the pump be clogged?
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>
>
> _______________________________________________
> GMCnet mailing list
> Gmclist@temp.gmcnet.org
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
>
> _______________________________________________
> GMCnet mailing list
> Gmclist@temp.gmcnet.org
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Gmclist@temp.gmcnet.org
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] macerator problem [message #27733 is a reply to message #27723] |
Fri, 14 November 2008 21:21 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Denny's design utilizes a small fitting that can create additional
restriction. We had couple of them that had low flow so we had to go in and
loosen some paper.
On Fri, Nov 14, 2008 at 6:12 PM, <Oldrvguybcg@aol.com> wrote:
> My pump gets a little warm but I figured that was normal. It only takes a
> few minutes to empty the tank. I would run it while adding water to the
> tank
> through a hose and see if it does the same thing. The other thing you can
> do
> although it sounds extremely gross is put the end of the hose back into the
> toilet and see if it continues or shuts off. Then you can be assured that
> it is
> not running dry. Mine is also connected very close to the Generator battery
> which is right next to the generator in a compartment. I have three
> batteries
> on my coach, the Motor battery, the House battery, and the Generator
> battery.
> I believe my StatPower can take care of the House and the Generator. I'm
> also
> installing a 15-Watt Solar System to maintain the House and maybe the
> Motor
> if I get a Combiner.
>
> Brian Gleissner
> Woodbury, CT
> 74 Sequoia
> **************Get the Moviefone Toolbar. Showtimes, theaters, movie news &
> more!(
> http://pr.atwola.com/promoclk/100000075x1212774565x1200812037/aol?redir=htt
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Applied/GMC
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http://www.appliedgmc.com
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Applied/GMC
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1-800-752-7502
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| Re: [GMCnet] macerator problem [message #27746 is a reply to message #27741] |
Sat, 15 November 2008 01:29 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| WD0AFQ wrote on Fri, 14 November 2008 22:56 |
Bill, it is 49 degrees here at 11 pm, in Missouri. Isn't it fun, working on a GMC? Off to Az. Jan, 1st.
Dan
|
Winter arrives here tomorrow. I spent this evening removing a badly rusted and leaking brake line on my S-10 pick up. Temps were in the high 50's. I cut the grass on Wednesday for the last time this season. Tomorrow's high is 38, and 37 on the next day. It does not look any better in the near future. I expect to see Ken H. coming through the area with his snow skis any day now.
This S-10 is just like a GMC MH where the Brake line rusted underneath a mounting clamp. The problem here is the mounting clamps were on top of the frame. It is almost impossible to get to the mounting clamp bolts loose without removing the body. This poor truck has spent it's entire 17 year life outside in the rain and snow. It is badly rusting away. I do not know how I'm going to bend a new line and get back in there. I wish I could find a brake hose with flare fittings to replace it.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] macerator problem [message #27922 is a reply to message #27917] |
Sun, 16 November 2008 18:46 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| GMCWiperMan wrote on Sun, 16 November 2008 18:32 |
Ken Burton wrote:
>
> ... I expect to see Ken H. coming
> through the area with his snow skis any day now...
SAD, SAD, SAD -- I go away for just a few days to attend a GMC rally, only to come back and find my mail box overflowing and my friend become totally delusional!
Ken H.
|
Hi Ken.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] macerator problem [message #27926 is a reply to message #27762] |
Sun, 16 November 2008 19:00 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| carguy wrote on Sat, 15 November 2008 07:33 |
Off Net:
Ken,
Are you talking about a steel line? What diameter line do you need? And
how long? We can make one for you.
Bill Brown
Coshocton, Ohio
carguybill@sbcglobal.net
----- Original Message -----
From: "Ken Burton" <n9cv@comcast.net>
> . . . I do not know how I'm going to bend a new line and get back in
> there. I wish I could find a brake hose with flare fittings to replace
> it.
> --
> Ken Burton - N9K
|
You do not realize what you are volunteering to do. This thing comes out of the master cylinder and immediately make a bend tighter than 90 degrees then in makes three circles in a diameter less that 2". On the other end this thing makes an offset bend of about one inch high and 2 inches long. You really need to see it to understand. Anything larger will not clear the steering gear.
I'll keep your offer in mind. I have a couple of ideas that I'll probably try tomorrow.
Thanks,
Ken B.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] macerator problem [message #27943 is a reply to message #27926] |
Sun, 16 November 2008 20:09 |
Kosier
Messages: 834
Registered: February 2008
Karma: 1
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Senior Member |
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----- Original Message -----
From: "Ken Burton" <n9cv@comcast.net>
To: <gmclist@temp.gmcnet.org>
Sent: Sunday, November 16, 2008 8:00 PM
Subject: Re: [GMCnet] macerator problem
>
>
> carguy wrote on Sat, 15 November 2008 07:33
>> Off Net:
>> Ken,
>> Are you talking about a steel line? What diameter line do you
>> need? And
>> how long? We can make one for you.
>> Bill Brown
>> Coshocton, Ohio
>> carguybill@sbcglobal.net
>>
>> ----- Original Message -----
>> From: "Ken Burton" <n9cv@comcast.net>
>>
>>
>> > . . . I do not know how I'm going to bend a new line and get
>> > back in
>> > there. I wish I could find a brake hose with flare fittings
>> > to replace
>> > it.
>> > --
>> > Ken Burton - N9K
>
>
> You do not realize what you are volunteering to do. This
> thing comes out of the master cylinder and immediately make a
> bend tighter than 90 degrees then in makes three circles in a
> diameter less that 2". On the other end this thing makes an
> offset bend of about one inch high and 2 inches long. You
> really need to see it to understand. Anything larger will not
> clear the steering gear.
>
> I'll keep your offer in mind. I have a couple of ideas that
> I'll probably try tomorrow.
>
> Thanks,
>
> Ken B.
Ken,
Tom Hamton in Marysville, Ohio sells a stainless steel brake line
kit.
You could get one and use the piece you need and save the rest
for
next spring.
Gary Kosier
77EII & 77PB
Newark, Ohio
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