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My first time loading the software in the microboard. I misread the instructions and thought it said sw1 through 4 all need to be on, instead of the proper way of just #4 on sw1 turned on.


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Nevermind, I figured it out.
In other news, I’m an idiot


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So I installed the optiview microboard retrofit kit 031-03630-001 on a YK chiller to replace the existing microboard.
Followed the enclosed instructions and applied power.
The screen displays the...

Yes, usually I’ve been able to get a drill bit just small enough to fit inside the roll pin but big enough to where it will grab, then I can drill into it and it’ll grab it and spin it out.

You...

You weren’t the only one that suggested this to me, which I why I took some time to about it and did some research but couldn’t find anything definitive


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One thing I still don’t fully understand though is that some had mentioned that the oil pump could have been running backwards.
Not really sure how that happens on a single phase motor.
In order...

Yes, the diaphragm in the oil relief valve was installed upside down. Flipped it over and bingo bango


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I have a sneaking suspicion that when it was rebuilt, that the new diaphragm was installed upside down.


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Yes, the egg shape with the three ports.


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A = top
B = bottom right
C = bottom left

A-B 4 ohm
A-C 7 ohm
B-C 9 ohm

A= 11
B= 13

Yes


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I double checked the wiring and identified the terminals. Top is common, bottom right is run, bottom left is start.
All wiring is correct.
I have a new oil relief valve on order.
Thanks for all...

No, wait... shoot, I’ll have to confirm on the wiring diagram.
I’m confused as hell, I took pics of all the wiring and put it back exactly and the wiring inside the oil sump wasn’t removed from the...

Yes two red wires from flexible conduit.
One goes to top terminal(common) wire labeled 2m. The other red wire labeled 9b or c, can’t remember exactly, goes to .......crap , I think it’s on the run...

Not losing any oil from the sump


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We did pull the oil pump motor to clean the sump and clean the motor/pump assembly.
Then reassembled with new gasket. However none of the wiring was changed.
I tried adjusting the oil pressure,...

We recently did an overhaul on a Trane CHVF built in 94. Went to do prestart checks and manually ran the oil pump. Oil pump is running and pulling fla at 4.9a, however it is not building up oil...

Both compressor were just replaced. I found that #1 only needs one set of the power leads going through the CT and #2 needs both sets of power leads going through it's CT. Double checked dip switch...

I have a York YCAS chiller. Compressor #1 current reading on the display is showing 170 amps, when the actual amp reading is only 80 amps avg. The motor protection/ CT module is putting out 2.008...

Yup, slowly but surely they will all be union. The office i worked in waited a while, my manager wanted to see how the bottom lines were affected of other union offices in the region before making...

The operating system is booted from a replaceable flash drive that is plugged into the motherboard. Most likely you will need to replace the IDE flash drive. Before doing so, I would recommend...

I would not trust a board from ebay to run yur chiller. I would recommend upgrading to the Microtech II control system.

The vanes closed switch is a differential pressure switch that relays a control signal back to the I/O board. There is a very small oil passage ( about the size of a needle point) inside the IGV...

Daikin Applied Factory Service (formerly McQuay Factory Service, the actual factory field techs, not the rep companies) signed a national agreement with the UA about three or four years ago. In the...

There is usually a core charge.

That's crazy! I would have to question either how the sample was taken, or even the quality of the lab. We've had to take multiple samples on the same machine because the one of the labs would...

http://www.daikinapplied.com/search.php
Select the appropriate options, but in the Archive Field select "all" to see all the manuals for your B vintage chiller

McQuay does not recommend regular oil filter or oil changes unless an oil analysis shows reason to. Make sure the compressor casting heaters are working, there shouldn't be much refrigerant in there...

How do you kill a magnet? Excessive heat. I find if you review the alarm history it'll tell you a lot, especially if there was multiple restarts within a short amount of time.

I heard there is a new service letter that just rolled out regarding the motor lubrication on York chillers. Anyone care to share?

Thanks Chev5372! I appreciate the response. York chillers are somewhat new to me, I had previously been working exclusively on McQuay chillers in the past.

Hello all,
Im reading through the operation and maintenance manual 160.54-O2 on lubricating the bearings on a Toshiba motor. It instructs to add 2 oz of grease to what I am assuming is to each...

You will need to purchase the software and cable kit. If you work on a lot of McQuay, it'll be worth it. If you rarely work on McQuay, I would contact the local Daikin (formerly McQuay Factory...

For future reference, if you look at the opposite side of the compressor, the heater well goes all the way through. You can use a screwdriver or 3/8" socket extension and knock it out with a hammer...

All Mcquay Service vans still say Mcquay because the service division does not own the rights yet to the Daikin Mcquay name, as the service division acts as its own entity. This fall the big change...