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Glad to help! Always feel free to ask if you have any more questions.
On question 12 I see on the schematic that L1 supplies power to M2 on the motor.
Take another look at that. At M2, L2 passes through the centrifugal switch on its way to the heater. But it doesn’t power the motor. Line for the motor come through M4. So which line is connected to M4?
When a switch actuates, that means it has changed from its normal state. That’s why we say
When a switch is not actuated, it is said to be in its “normal” state.
That means that “unactuated” and “normal” mean the same thing here.
So if the NO (normally open) terminal of that switch is open, and the NC (normally closed) terminal is closed, would you say the switch is actuated or unactuated?
I’ll go through the questions one at a time.
#4: Which timer cam and contacts must be made in order for anything else in the washer to get power?
You don’t even have to look at the timer chart to see the answer for this one — though the answer is there too. If you look at the labelling on the washer schematic (make sure you’re looking at the correct schematic). Both the switch and the contacts are labelled there.
#8: Which timer contacts supply Line voltage to the dryer motor?
The answer to this is written right on the dryer’s timer chart. It’s the smaller timer chart that’s just above and to the right of the dryer schematic.
#12: The dryer motor runs off L1 and Neutral.
You’re correct that the motor doesn’t run on 240 volts. But double check which line it uses in its power supply.
I don’t believe I sent a file via email — could you clarify what you’re referring to?
The key is in the wording of the question:
In the timed dry cycle, what is the function of the motor centrifugal switch? (select all correct answers)
Is the neutral to the timer motor completed through the centrifugal switch in timed dry?
Remember how voltage drop works in parallel circuits: in parallel branches, each branch will drop the full supply voltage.
With the detector switch closed, the main coil is shunted, so it drops 0 volts. There’s no current flowing through it. But the other three loads (the ignitor, booster, and safety) are all in parallel to each other, so they each drop the full 120 volts.
Let me know if it still doesn’t make sense.
I believe in that particular video, he simply used chassis ground as a reference. However, as we often stress, ground is never what you want to use as a reference. There’s a more detailed explanation of this in the little pop quiz right below the video. Make sure to check that out!
October 8, 2020 at 12:23 am in reply to: Refrigeration….Just when you thought it was safe to be here; I’m Baaaaaack..! #20271Which door is Scott referring to when he said to close the door which let’s the optics relay reset?
He’s referring to the freezer door. You’ll notice that, if you close the door to the compartment, it will push that flapper closed. That’s why manually pushing on the flapper emulates the door closing.
October 6, 2020 at 3:38 pm in reply to: Bonus Unit: Permanent Split Capacitor (PSC) for the Whirlpool Vertical Modular W #20267Yes, he’s talking about the compressor. Condenser and evaporator fans are both relatively lightweight motors, so you wouldn’t need a run capacitor for them.
October 5, 2020 at 2:58 pm in reply to: Variable Speed Drive Motor Systems in Washing Machines #20263Not at all. The inverter takes a signal from the main control and then generates the three-phase power that the BLDC motor runs on. The hall sensor, on the other hand, detects how quickly the motor is turning and relays that information back to the control board. The hall sensor doesn’t have anything to do with powering the motor. It’s just there for monitoring speed.
October 3, 2020 at 11:47 pm in reply to: Split Phase Drive Motors and Timers in Top Load Washers #20252So anytime I see relays and triacs, I am looking at the control board
I would put a slightly finer point on that. If you see a relay or a triac, you’re looking at a control board, not necessarily the main control. Some units have multiple control boards, and some even have dedicated relay boards.
October 1, 2020 at 12:53 pm in reply to: Split Phase Drive Motors and Timers in Top Load Washers #20241Are switches always in the control board?
Switches in general don’t have to always be on a control board, but specifically relays and triacs will always be on a board of some kind. That’s because their purpose is to use a small DC control voltage to switch a large AC voltage.
September 30, 2020 at 5:09 pm in reply to: Split Phase Drive Motors and Timers in Top Load Washers #20239This is just a matter of learning different schematic conventions, some of which definitely can be confusing when you’re unfamiliar. In this particular case, all of the segments of wire and switches that are thicker and darker are timer contacts. That’s just how the engineers chose to draw the schematic.
Does that answer your question?
You’re thinking along the right lines — you might have just gotten your terms mixed up. Multi-point ignition is when you have one spark module igniting multiple burners. Single-point ignition is when a spark module only ignites a single burner, so each burner has its own spark module.
Reviewing the video on this topic is a good idea, too. Let me know if anything still isn’t clear!
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