but the fan works just fine. A way to get around this situation is to wire in an on and off switch. This switch works by eliminating the ground connection when it is switched "off" and reconnecting the ground when it is "on". The process of wiring this switch is relatively easy. You...
Also, if you have changed or installed a new hotend, you should do a PID auto-tune. This is where you calibrate PID values in the firmware to help accurately maintain the temperature and avoid fluctuations. You should also check the thermistor itself for any signs of damage or damage to t...
My Mother’s 1972 Mercedes-Benz 250-C HVAC system had all the quietness and complexity of a Western-Auto add on unit. The Borg-Warner copied A/C compressor rumbled quite noticeably at idle and certain rpm ranges. To the credit of the M-B engineers,...
Step 5:At each substation location, connect the three wires to the terminals on the substation unit, following the wire color or other identification code that you will find stamped alongside the terminal screws. Fasten the substation unit in the wall -- preferably to a wall stud -- and atta...
6. A pressure sensor is used to measure the amount of refrigerant is in the system. When this sensor goes bad the compressor will not turn on. To test this sensor remove the wiring connector and insert a jumper wire between the two terminals of the connector. If the compressor turns on ...
DC to AC converters for cars are devices that allow a car to run on AC power. They are used to convert the DC power that is provided by the car’s battery into AC power that can be used to operate the car’s electrical components. How does a AC to DC converter work? Fig.1 A ...
On some older vehicles, a different type of coolant sensor may be used. Some of these are essentially an on/off switch that opens or closes at a predetermined temperature. The sensor may be wired directly to a relay to turn the electric cooling fan on and off, or it may send a signal...
Step 2: If the compressor runs after the wire is removed from its terminal, there is probably a short circuit somewhere in the unit's wiring. In this case, don't try to fix the problem yourself; call a professional service person. Step 3: If the refrigerator or freezer runs but the ...
Improvements to hardware and to the process of dividing, labeling and reassembling packets have led to much faster serial connections, such as USB 2.0 and FireWire. The Advantage of PCIe Devices PCI Express is a serial connection that operates more like a network than a bus. Instead of one...
Cooling fan Like the thermostat, the cooling fan has to be controlled so that it allows the engine to maintain a constant temperature. Front-wheel drive cars have electric fans because the engine is usually mounted transversely, meaning the output of the engine points toward the side ...