. If the pressure comes down, the switch does not turn off at exactly 2.0 kg/cm2 but at 1.8 kg/cm2. This difference of pressure (0.2 kg/cm2) is called as ON/OFF differential. As another example, for falling pre
FAQs on Operating Pressures & Temperatures of Residential Hydronic (hot water) Heating BoilersQuestion: effect of furnace fan limit switch not working & other worries(June 21, 2012) abbas said:what the problem if furnace high switch not working...
, such that the power to the system controls is lost and the system does not run. In contrast, “normally closed” switches can also be used to verify that it is safe for the furnace to come on. If the switch had failed and it was stuck open, then the furnace would not come on....
METHOD FOR PREVENTING DEVELOPMENT OF STUCK MATERIAL TO DRY TYPE FURNACE TOP PRESSURE TURBINE AND DEVICE THEREFORPROBLEM TO BE SOLVED: To provide a method which prevents the development of stuck material to a dry type furnace top pressure turbine blade, and a device therefor....
an electromagnet to open the main valve. In the event of flame failure, the fluid pressure operated mechanism that controls the switch ensures a definite time delay before the ignition circuit can be reestablished, thereby permitting escape of unconsumed fuel from the furnace and preventing ...
电压力锅维修常识(Electric pressure cooker maintenance common sense).doc,电压力锅维修常识(Electric pressure cooker maintenance common sense) A professional maintenance knowledge. (1), fast pot 1, self-locking valve leakage A cleaning, self-locking val
PROBLEM TO BE SOLVED: To provide a method which prevents the development of stuck material to a dry type furnace top pressure turbine blade, and a device therefor. ;SOLUTION: (1) Concns. of chlorine and/or ammonia are lowered to the concns., at which the chlorine and/or the ammonia ...