Ads
related to: is furnace low pressure shut off switch fix near metopdealweb.com has been visited by 100K+ users in the past month
doconsumer.com has been visited by 100K+ users in the past month
Search results
Results from the WOW.Com Content Network
The heating elements activate one at a time to avoid overloading the electrical system. Overheating is prevented by a safety switch called a limit controller or limit switch. This limit controller may shut the furnace off if the blower fails or if something is blocking the air flow.
Low-water cutoff: It is a mechanical means (usually a float switch) or an electrode with a safety switch that is used to turn off the burner or shut off fuel to the boiler to prevent it from running once the water goes below a certain point. If a boiler is "dry-fired" (burned without water in it) it can cause rupture or catastrophic failure.
After the control of air flow and temperature was standardized, the use of electromechanical relays in ladder logic to switch dampers became standardized. Eventually, the relays became electronic switches, as transistors eventually could handle greater current loads. By 1985, pneumatic controls could no longer compete with this new technology ...
Murphy oil pressure gauges with switches that activate on low pressure. A pressure switch is a form of switch that operates an electrical contact when a certain set fluid pressure has been reached on its input. The switch may be designed to make contact either on pressure rise or on pressure fall.
Generator makers claim automatic shut-off switches can prevent most carbon monoxide poisoning deaths, but the CPSC says the industry standard falls short of what’s necessary to reduce fatalities.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Ads
related to: is furnace low pressure shut off switch fix near metopdealweb.com has been visited by 100K+ users in the past month
doconsumer.com has been visited by 100K+ users in the past month