The amount of light given out or produced by an electric lamp — bulb, striplight or fluorescent tube — depends on the type of lamp and its wattage. The light produced is measured in lumens and a bulb or tube of a given wattage produces an average output of so many lumens. This will continue throughout most of its life.
Equally important is the number of lumens produced for each watt consumed, so it is usual to say, when comparing types, that a bulb or tube produces so many lumens per watt. The more the lumens per watt, the higher the efficiency of the lamp. Read the rest of this entry »
Unplug refrigerator power cord. Using hand tools, remove the icemaker from the freezer section of the refrigerator. Remove the front cover from the icemaker. Remove the front component plate that is secured to the ice maker support housing. Remove the screws that secure the cycling thermostat to the icemaker support.
Remove electrical wires from the terminals on the support housing, and carefully remove the thermostat. Read the rest of this entry »
Move the refrigerator out from the wall. Unplug the refrigerator power cord, and turn OFF the water supply to the icemaker.
Using hand tools, remove screws and discard the defective water supply valve. When installing a water supply valve on the water heater, install only on the cold-water side of the water heater. Read the rest of this entry »
Unplug refrigerator power cord, open the refrigerator freezer door, locate the compact icemaker and place your hand on the ejector blade. Turn it slowly in a clockwise direction. If the icemaker ejector blade continues to turn unaided, the problem is a defective icemaker holding switch. The icemaker holding switch can be checked with the volt/ohmmeter. First, set the ohmmeter to the RX-1 scale. Next, place the probes of the volt/ohmmeter on the terminals of the holding switch. With the switch button depressed, you should see full-scale deflection (continuity), on the scale of the volt/ohmmeter. No reading on the ohmmeter means the holding switch is open and must be replaced. Read the rest of this entry »
Next in line after the water supply valve is the water inlet valve, usually located at the back of the machine near the bottom. The role of the water inlet valve is to release supply water from the supply line so that it can enter the icemaker mold cavity. However, the valve’s internal components can eventually become worn out from the corrosive properties and algae in the water, and fail to supply water to the mold cavity. Check the water inlet valve to see if it is electrically releasing the water on command to the mold cavity. Read the rest of this entry »
Specific failure symptoms include either: 1) Refrigerator temperature too warm to make ice. 2) No water getting to icemaker mold. 3) Icemaker not ejecting the frozen ice.
For a compact icemaker to operate properly, the refrigerator freezer compartment must be maintained at 10 degrees F or lower. The design of the icemaker is such that the icemaker will not eject the ice until it is frozen hard. Read the rest of this entry »
Socket-outlets situated off the main route of the cable do not have to be connected to the actual ring cable. Instead they are usually supplied from spur cables branching off the ring. These spurs are wired in the same size cable as that used for the ring.
Fixed appliances which may be connected to a ring circuit include skirting heaters, wall heaters, small water heaters and any non-portable electrical appliances having individual loadings of not more than 3000 W(13 A approx.). Read the rest of this entry »
A radial power circuit is the name given to a circuit supplying a number of 13 A socket-outlets and fixed appliances using one cable which is not wired in the form of a ring but terminates at the last outlet.
The permitted number of socket-outlets (and fixed appliances) depends on the current rating of the circuit which can be either 20 A, wired in 2.5 mm2 cable, or 30 A wired in 4 mm2 cable. The number of socket-outlets and fixed appliances which can be served by a 20 A radial circuit depends also on the location of the circuit and whether the outlets are confined to one room. Read the rest of this entry »
Of the two principal types of cooker control unit, the type incorporating a kettle socket-outlet is the more popular. Since, however, it is important that the kettle is not used on the cooker hob where its flex would trail over a switched-on boiling plate it is better to have the unit without a socket where it has to be fixed immediately above the cooker. Read the rest of this entry »
Small table cookers and other portable appliances having individual loadings not in excess of 3 kW are run off 13 A fused plugs and socket-outlets. They require no special wiring though extra socket-outlets may be needed in the kitchen when additional electrical cooking appliances are bought. These additional socket-outlets may be served from the ring circuit and spurs.
Family-size cookers, whether free-standing or built-in split-level, need an exclusive circuit from a fuseway of appropriate current rating. Read the rest of this entry »
