It sounds like the high pressure was tripping the the high pressure overload switch. Most cases i have found this problem to be associated with a restricted water line. Although the water valve may be good, if the water can't flow through at the appropriate rate it will not cool properly and and casue excessive pressure
It sounds like you may have unwelded the suction line to the compressor and blew the compressor out. That is not good. How a Taylor works is this: Compressor comes on and produces a lot of heat. There are 3 ways to dissipate the heat. If there is a big radiator like set of copper and aluminum finned coils near the compressor it is air cooled. If there is a water line going in and a drain line coming out, it is water cooled, the water runs the whole time the compressors are running, the third way is to have an outside remote condenser coil. I believe you have a water cooled machine. On the back of the machine is a copper fitting to hook up the incoming water lline. There is also a drain line and water will flow constantly from it if everything is running alright. It is ok for the compressor to get hot when running, it is supposed to get hot. If you broke into the freon lines by mistake, the freon is gone and it won't show pressure anymore. I don't see any way that oil would have gotten into the water cooling line. To verify which is the cooling water, the copper lines will go into the back of the machine and will be wrapped around the outside of the compressor and then back to the drain at the back of the machine. If you blew the oil out of the compressor it will very soon lock up and be destroyed. Look at the line that you cut into.
Very interesting, however if he cut the refrigerant lines he would not have a reading of pressure on the high side.
This sounds like there could be a restriction in the refrigerant system.
I asked what he blew the condenser out with to see if he used CO2
which is moisture ladden and will add problems.
It is all a bit confusing. He said the pressure went high and then the compressor kicked out. The odd part is that he said the water pressure regulator was good. So, I'm thinking its a water cooled machine, but he unwelded the tube at the condensing coil. Well a water cooled machine doesn't have a condenser coil. So, what the heck did he unweld that would have oil in it? I also think the next to last sentence he wrote means that after he hooked it all back up there was no pressure on high side gauge. He also said he put a new liquid dryer on it. Well the liquid dryer goes on the high side freon line. So, I'm thinking there is no freon and the compressor oil has been blown out. Depending on low old this machine is, I believe he has a semi-hermatic Copeland compressor with an oil sight glass. I would bet there is no oil showing in the sight glass.
These units also had a smaller condensing unit (hermetic) called "Stand-By" that after the product is formed it holds temperature. Wondering if he has mixed up the regular semi-hermetic with the stand by ?
http://www.taylor-company.com/service/re...
This unit uses dual air cooled conders and Hermetic Compressors. This is a combination soft serve shake machine. This macine uses a "glycol" system.
Found the service manual. This shows there was a unit with a water cooled condenser.
http://www.taylor-company.com/service/re...
This machine is available in air cooled or water cooled. Over the years there have been at least 4 different compressors used in this model. Some Bristol, Some coplematics. I have never seen one with glycol in them. The mix pan is cooled directly by copper coils attached under and on the sides of the mix pan. The freezing chambers are a little more complex but are still frozen by regrigerant such as 404a. I believe you were looking at the dismantling instructions, they are generic and apply to all their machines. I wish we could get a picture of the machine with the side panels off. My bet is 2 semi hermetic coplelands, water cooled and a smaller standby mix compressor, probably a Bristol, and water cooled coils around the compressor body . I have worked on Taylors for 26 years and have never seen a floor model twin barrel with anything other than one or more Coplematic semi hermatics. I have four 754s sitting here in my shop.
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Did you evacuate the system ? What did you blow it out with ?
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