relay


Relay assembly close-up. 11
Last week, I was working in my back yard when I noticed that the big red light on top of my septic system control box was lit up. That light is triggered when one of two alarm floats (in either the main effluent pump chamber or the clearwell pump chamber) detects that the fluid level in […]

How to Make Your Septic Alarm Smarter


New capacitor in place 526
UPDATE: Whirlpool has finally publicly admitted (kind of) that they’ve left their customers “high and dry” with this control board issue. They published this Class Code 91 Letter (though they never actually explain what “class code 91” means and Google wasn’t any help) with a list of all the model numbers that […]

How to Fix a Whirlpool & KitchenAid W10219463 / 2307028 ...


Postfix 2.9 Upgrade 4
I run a number of “real” Postfix servers that live “away from home,” in a cozy server cabinet at our colo facility, but I also like to keep a Postfix server handy in the basement, running on an ancient (but rock solid) Dell PowerEdge 2450 running CentOS 5. I don’t […]

HowTo: Get Around Comcast Port 25 Block with a Postfix ...