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#79592 - 01/08/02 07:59 AM Sewer pumps  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,311
I'm having a bit of trouble with residential sewer pump installs lately, so i'd like some views from the board.

Excavators commonly buy/install the whole system. I'm usually throw a bag of parts, good luck, make it work.

My problem is, the means of disconnect. I advocate a pedestal for a motor rated switch ( most are 1/2 to 1/2 HP ) made via FS box.

The usual speel is to install said box within the sewers opening ( man hole) . The units I see sold are a cord cap plug-in variety, the ball controls, also cord cap, are stacked to the pump. None of this lives long in the enviorment mentioned,nor is there a encapulating cover deep enough. thus the pedestal & hardwiring. What is the rest of the world doing for this? your $.02 appreciated
[Linked Image]


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#79593 - 01/08/02 09:34 AM Re: Sewer pumps  
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,878
NY, USA
Sparky,

I've never done anything other than provide a dedicated single outlet for them.

Bill


#79594 - 01/08/02 06:18 PM Re: Sewer pumps  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,311
Bill,
have you found a closable cover deep enough? The difficulty i've had being the pump cord cap 'stacked' over the pump balls switched male cord cap.
I also find the atmosphere corrosive
(can U tell working in a serews not my 1st choice...?)
[Linked Image]


#79595 - 01/10/02 10:39 PM Re: Sewer pumps  
Chris Rudolph  Offline
Member
Joined: May 2001
Posts: 160
Winter Park,Fl USA
The few septic pumps that I have worked have a weather tight enclosure that is to be mounted outside the septic pump tank,that contain the controls/disco for the pump and the interface hook up for the float switches(pump on,pump off& high level alarm).Also mounted on the top of this enclosure is a red flashing light that is triggered by the alarm float switch.

Chris


#79596 - 01/11/02 12:01 AM Re: Sewer pumps  
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,878
NY, USA
Sparky,

Why do you need a closeable cover?
What is the corrosive atmosphere?

You've got me confused with this one. I see these things all the time in finished basements and have never seen one that was not sealed or couldn't be just plugged in.

Maybe we're not talking about the same thing?
I've heard them called 'Ejection Pumps' here.

Bill

[This message has been edited by Bill Addiss (edited 01-10-2002).]


#79597 - 01/11/02 07:04 AM Re: Sewer pumps  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,311
Bill,
perhaps i've painted a poor pix, my bad...

The majority of residential sewer pumps i see are external from the house, bettween the house and mound system.

They are round concrete w/ a cover. The pump & pump balls, as well as the alarm ball, is tiewraped to a 2" pvc riser down 'in the hole'.

The S cords from the above are usually terminated in a box just inside the top cover, on the inside of the tank. I've seen quite the few aluminum w/p boxes rotted to next to nothing , so i'm assuming methane is corrosive.

The motor needs a disco, and the disco can be the male cord cap small motor, so as the enviroment would require an encapsulating cover. Because the cord caps are 'stackable', in that the high/low balls are a cord cap 'switch' that the motor cord cap plugs into, the average cover will not close, not enough depth.

The overfill alarm is mounted in the cellar usually.... [Linked Image]

Admittedly, the location, being somewhat unpalatable to diagnosing has also driven me to advocate the pedastal. (gotta almost stand on yer head in a sewwwy hole, drop a tool & say bye bye...)

I have lately mounted an FS box on a pedestal, with a switch instead, usually this is something i try and hide on the vent riser. I've caught some grief from homeowners to this end, and have only been backed up once in a rare occasion
by an inspector ( gotta sent him a bottle next X-mas...) [Linked Image]

The larger municipal systems i've worked on all are as Chris desribes,pedestals are the norm. Motor Diagnosis is done comfortably...It must be mentioned that OSHA confined space article is enforced (amazingly, given the 'tude here in the great white North..), a tripod and harness is used for the dude who draws the short straw, two spotters & an air exchanger are present. (all involved then buy said dude who retrives the bad motor his coffee the rest of the week...)

The methods/codes should apply universally, yes?no?
[Linked Image]


#79598 - 01/11/02 10:03 AM Re: Sewer pumps  
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,878
NY, USA
Sparky,

OK, definitely not the same thing!

I've never seen anything like that (and don't think I want to!) [Linked Image]

Consider my .02 withdrawn!

Bill


#79599 - 01/12/02 07:50 PM Re: Sewer pumps  
Chris Rudolph  Offline
Member
Joined: May 2001
Posts: 160
Winter Park,Fl USA
Sparky,
Been thinking about your problem.I did do a system similar to what you described except the stackable plug with float and alarm were outside the pump tank.
If I had to put the disco inside the stinky tank I would use a plastic 60 amp disco no fuses,and tapcon it to the wall.Cut off the stackable plugs and wire nut the float switches and pump inside the disco box.
Whatcha think?
Chris


#79600 - 01/12/02 08:02 PM Re: Sewer pumps  
Chris Rudolph  Offline
Member
Joined: May 2001
Posts: 160
Winter Park,Fl USA
Also,in looking at your reply at the procedure as to how you replace the motor,I think I would have your customer call a pump truck for about $150.00 and pump out all the stinky fluid before sending a person into the abyss.
Chris


#79601 - 01/13/02 08:56 AM Re: Sewer pumps  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,311
Quote
Whatcha think?


well i've had to do similar installs simply because the sewer system had been done , one pipe into it, and buried long before i arrived. You bring up a code related concern with the OCPD's....
Quote
I think I would have your customer call a pump truck for about $150.00

ah!, the honeysukers! The point should be presented, or Hep-B shots sought [Linked Image]


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