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“What questions do you think are going unanswered
here? Think that Kennmore Washers are expensive! Home warranties
may make sense if appliances are expensive to replace or nearing the end of their life span. If you have a
faulty home appliance, then you must not wait until the minor issue can become major and unbearable.
Also, if I bought a replacement for the entire unit, I'd then have yet another set of electronics without a
meter! Common problems with older electronics in general are dried up electrolytic capacitors, bad
connections, deteriorated wiring, and corrosion if used or stored
under damp conditions. Pressing "Load Hold" under normal conditions
will override the CVT-16 set-point and allow the load to be powered regardless of pressure.
Pressing "Reset" and "Load Hold" at the same time will override the fault and allow the
load to be powered should this be needed to remove the fault condition. It seems that no two TC gauges ever use the same drive frequency!
An off-center hole was drilled and tapped for an 0-80 screw that would
adjust the separation of the two "leaves".
There were a grand total of two (2) caps (one for half wave
rectified line voltage and the other for the low voltage derived from it - 4 uF at
150 WVDC and 20 uF at 10 WVDC). I have put TWO sections, further down this article, for do it yourself-ers (DIY).
The hands can be reversed by registering the lugs differentlyAll project content written and produced by Mike
Edwards, founder of DIY Doctor and industry expert in building technology.
With modern and scientific innovation there are various technology has evolved in different types of fridges being in the market.
Replacing them with slightly larger values from my used but tested stock, totally cleaned up the drive signal which was a bit over
0.3 V p-p, just about right for the DV-4D TC gauge tube (there is an adjustment of this if needed).
This is actually my second TC gauge using a DV-4D tube.
I still would like to find a DV-4D for this or my other gauge (which I
also tested with the DV-4AM). It uses a DV-4D TC gauge tube
and has a useful range of 0.1 to 20 Torr so it is for the upper end of medium
vacuums. When I worked on repairing this unit, I didn't yet
have a TC gauge tube for either but was able to look at the heater drive signal with an oscilloscope
and inject a low DC voltage to simulate the thermocouple output to test the
meter and amplifiers, if any (in this unit there are no amplifiers for the meter).
The main precautions to take are to avoid blowing out the meter or TC gauge tube heater with excessive current - even measuring their resistance with an analog VOM on the
low ohms range may be fatal. Figuring that this was due to dried
up electrolytic capacitors, I opened the back of the meter (all the
circuitry is on a printed circuit board inside a metal cover).
The schematic of the VT-4 (courtesy of Hastings) is shown in: Hastings VT-4/VT-6 Readout Circuit.
Later, after noticing that the line regulation of the simple
zener circuit wasn't that great, and in addition, the reading was drifting as the gauge
heated up, I replaced the AC input circuitry with
a low voltage power supply consisting of a 12.6 VRMS centertapped transformer, full wave rectifier,
filter capacitor, and LT1084 regulator set up for 6.0 VDC,
which was slightly less than what I measured across the zener but the adjustment pot had plenty of extra range and that allowed me to use
a transformer I had gathering dust on my transformer shelf.
Simply remove the filter cover and pull lower rack out to remove filter cover inside a dishwasher.
After removing the front cover and set-point mechanism, the extent of the
damage could be seen. It can be taken off by removing the screws and sliding it forward.
Avoid buying an automatic defrost freezer, which can decrease energy efficiency
by up to 40%. And if your freezer suddenly starts to take
on a lot more frost, or needs defrosting more than every couple of
months, check the door again for a good seal. Most customers don’t know this, have the inclination to investigate, or even want to take a
chance they’ll cause more problems than they already have.
For other responsibilities like marketing strategy and
distribution and just general maintenance, I'll have other
amazing members of my team take care of that.
General Electric makes a wide range of appliances that have given the homeowner
an edge that previous generations could only dream about.
Here is my blog: Camillacastro.Us |
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