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On a good compressor using an ohm meter you should get a positive reading from common?
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When testing a shortened diode with a DMM and the positive lead is connected to the anode what should the reading be?
Assuming the DMM is rated to test diodes (not all are), meaning that it presents more than forward drop voltage to the diode, a shorted diode will test nearly zero ohms, usually in both directions.
What reading should you get when you mega between phases on a pump?
The term is 'megger', not 'mega', and the answer is infinity.
Why you use negative source in emitter biasing?
to get the base- emitter junction forward bias we should connect the negative of the diode with the negative of the battery and the positive of the diode with the positive of the diode so we should connect negative source in the emitter
Should the suction line be cold?
On split system installations, the suction line should be pitched towards the compressor at least Suction line should be insulated for 2 reasons: 1) so it does not drip condensation everywhere it passes through the homes interior space. ie attic, inside walls etc. 2) cool suction gas is what cools the compressor motor during operation, insulating the pipe carrying it helps prevent that gas from picking up heat from the surrounding air ensuring it remains an effective coolant for the motor. The original reply was also correct, an effort to pitch the suction line towards the compressor should be madr wherever possible to aid in oil return.
What megohm reading should you get testing a low voltage cable?
Greater than 1 Megohm
Do you have to have car running when applying freon to ford focus?
Yes, in order for the compressor to take on the new coolant and oil charge the compressor ideally should be running. It is posiible to begin charging the system with freon prior to compressor initiation, however to get an accurate reading of the pressure in the system the compressor should be cycling with differential valve operating properly. If it is clogged or the compressor is not cycling then then low side reading will give an elevated pressure while charging the system. Does that make sense?
What does it mean when r-22 gauge reads the same on the low and high sides of a heat pump?
It means either the compressor is not running, or if you are certain it is, the compressor valves are bad. You can verify this by taking an amperage reading and comparing what you read to the compressor nameplate. If the valves are bad the reading will be significantly lower than they should be. Also the compressor will feel hot to the touch and will cycle on and off on it`s internal temperature protection device.
How do you use an ammeter?
The Positive side of the Ammeter should be connected to the positive side of the battery and the Negative side should be connected to the Globe/Conductor/Insulator to provide a valid reading.
How can you test a air conditioner 3 phase compressor?
just disconnect power & get ur Ohmmeter,and test ; Start-Run//Common-Run//Common-Start..... you should get the same readings on all 3 phases if the compressor is good !!
How do you check mega ohms on compressor?
Usually you check mega-ohms by reading the resistance between compressor shell and the windings. There should be a large amount of resistance which means the windings are not shorted to the compressor case or shell. Use a DVM (digital volt ohm meter) to check the resistance.
What is the voltage reading of positive wire in 110V dc?
You should be asking, 'What is the potential reading of a positive wire....?', as 'voltage' means 'potential difference' and you can't have a potential difference on a wire! The positive wire has a potential difference of +110 V with respect to the negative wire.
What causes the air conditioner to stay hot in a Lincoln Town Car?
The most common reason would be that you are low of R-134a. The best way to determine this is to use a gauge and get the PSI reading. (This should be done when the compressor is running and the clutch is engaged). Most auto parts stores are willing to help you get a reading. If you are indeed low of R-134a you need to fill your system to the correct PSI level. (This is determined by the current ambient temperature) If the compressor is not running you could fill the system with one can of R-134a, the compressor should start short cycling. If it doesn't do not put anymore R-134a in and seek professional help.
Do you need two jumpers from your outdoor condensor compressor to the start capacitor if you only have one and does it need 220 or 120 if it is a 40mfd rated for 330v?
Do you have a dual capacitor that starts both the compressor and the fan motor? You need 230V to power the compressor. You should have one wire from the capacitor going from the start terminal on the compressor and one going from the common terminal to common on the capacitor.
What is the voltage reading of positive wire in 110V dc circuit?
You should be asking, 'What is the potential reading of a positive wire....?', as 'voltage' means 'potential difference' and you can't have a potential difference on a wire! The positive wire has a potential of +110 V with respect to the negative wire.Read more: What_is_the_voltage_reading_of_positive_wire_in_110V_dc
What are the symptoms of a bad ac compressor on a 98 Lincoln town car?
The symptoms of a bad ac compressor would be a grinding or rattleing sound or a low pressure reading on the high side with a normal pressure reading on the low side. The low pressure will be about 30 to 40 pounds. The high side should read around 150 to 200.
What terminals combinations would show an open circuit if the internal overload device in a hermetic compressor should open due to excessive heat?
common to start and common to run
Where is the air suspension compressor on a 2000 Lincoln continental?
the compressor should be under the hood on the front passenger side, it should be.
