Taylor Soft Serve

[Pauuly48]

Hi Everyone, I am working on a older model 8334-32 r-12 that has been converted to r134a I am unable to find any info on this unit and I dont work on them very often. I need to know if anyone has an old tech book that may be able to tell me the weight on the original charge as the name plate isnt readable, Also is there any special techniques on adjusting the expansion vale. This unit will not shut off it keeps running until you push the reset button. It is a two head unit one side has 408A the other 134A. Need help I did find out the temp for the ice cream is suppose to be 19 degrees is this correct. Thanks for all the help Paul

[markettech]

I am far from being a soft serve guru. I do know, however, that Taylor's tech support staff are very helpful.;)

[Bones74]

In Michigan, Taylor will not help you or answer questions. They are there own service company and charge any other contractor list! I gave up and refuse any work from them warranty or not.

[Pauuly48]

Thanks for your reply! I have contacted taylor and was told this unit isnt supported anymore and I can't buy parts for it. I did contact our local supplier and they do still sell parts and they were able to give me some info but I need a liitle more technical info.

[Bones74]

What is the issue? This is the place!:D

[Randy S.]

Seems to me from years ago that the shut off is either from a belt tensioner or motor current as the mix gets stiff.

Glad I don't have to deal with restaurant stuff any more.:D

[Pauuly48]

Hi the issue is I need to know proper proceedure for adjusting the expansion vale, the correct charge, superheat info, the temp of the product and any technical info I can find the model number is 8334-32

[Pauuly48]

Hi Yes you are right the shut off is controlled by sensor with an adjustment on it the sensor does work I just don't know how to get it to bring up the amps i will have to look at the belts maybe I can tighten them a little LOL I will follow the wires to see where they take me I don't have any schmatics or info on this unit. Thanks for the reply Paul

[p1perbob]

two head machine, you should have the same flavor gas on both sides unless you got a combo machine. sounds like someone put in the wrong gas. how old is it?
serial # ?

bob

[Pauuly48]

hi it is a very old machine and yes I have seperate compressors for each side and a third one for refrigeration on standby? Can you help with anything?? Paul

[airon]

Paul

I dont know your machine exactly, but most of them held around 3 lbs.Receivers allow some room for non critical charge. Do you know the original gas? Also a site glass off reciever if not installed will make it easy. should be clear shortly after startup

You are correct on product temp 17-19 deg depending on what customer likes
Adjust AXV ot TEV to maintain this temp without a TP chart I dont know where that pr would be but from 10-15 degrees. Most units operate either on temp or pressures.
If really old may be a tensioning switch as the consistency of the product gets harder belt will pull down on the motor and trip a switch. Not something you see alot of on ice cream more on water based ice type drinks like slushies. Ice cream auger motors are usually geared to handle the loads and if freeze solid a sheer pin may come into play.

3rd smaller compressor will be to maintain mix hopper temps of 38 deg before entering the Evap cylinder.

[Pauuly48]

Hi Thanks for the response! This unit has a control board that controls when the unit shuts off compressor I haven't figured out what actuall controls that part yet I think it is tempature or amperage it has a small adjustment on the board I do finallay have a schematic to look at but It is not very well marked so I will have to trace wires. If you think of anything else let me know. Oh ya this unit doesn't have receivers. The original refrigerant for this was R12.

[Bones74]

Hi Thanks for the response! This unit has a control board that controls when the unit shuts off compressor I haven't figured out what actuall controls that part yet I think it is tempature or amperage it has a small adjustment on the board I do finallay have a schematic to look at but It is not very well marked so I will have to trace wires. If you think of anything else let me know. Oh ya this unit doesn't have receivers. The original refrigerant for this was R12.
I would first verify it is wired right. The age of the unit and the fact that most techs never work on them is a pretty good indication that it is not factory anymore. Charge off of head pressure when the system is running with product in it when it's close to it's operating temp. get 100 to 110 degree head and 120 degree head if it's warm product. That's a start. It should let you check the SH and go through it. Just a thought!
:D

[nickellhead]

Hello pauuly48

I looked at all my taylor manuals and I cant find a model 8334-32 but does it have the metal scraper blades or the plastic ?

also do you have a serial # for it ?

and also is there a screw slotted knob on the board?

and you dont know who switched the ref do you?

[Pauuly48]

the name plate says 8334-32 and serial is 7057503 as far as I can tell I have ordered parts for this unit before using that model number.
I did get it to work it holds around 24 oz of refrigerant and it is controlled by the amperage off the auger motor and has a preesure switch for a cut in. I am going to change other side to 134A so both sides will be the same and this unit will work better with 134A as it started with R12. I did add a sight glass but it shows unit a little under charged. I charged unit to a 20 degree superheat at compressor. Did I mention this unit is water cooled? Thanks for all your help I am still open for more info. The scrapers are plastic now but started with metal and it also had pumps on it which have been removed.there is a screw slotted adjustment on board for the amperage to control the compressor shut off

[nickellhead]

ok the screw adjustment on the board sets the viscosity(amp draw)

To set it you turn it all the way clockwise and put new mix in the machine and after you prime the barrel turn machine on auto wait about 8 to 10 minutes and draw some out and check temp of product your looking for 16 to 18 deg as soon as you get in that temp range than you back your adjuster screw counter clockwise slowly until it shuts off

If you need any other help just let me know I work on these day in and day out

[Pauuly48]

I did get this unit to work properly. I was wondering what are the normal gauge pressures for low and high under normal condition. what actually controls the compressor that keeps the product cold in the hoppers. what is the proper proceedure for the belt tension.
I would like to know the proper operating proccedure for this unit what happens when it is on standby? what is the proper settings for the cold control pressure switch etc..
Thanks for all the info , Paul

[r404a]

In Michigan, Taylor will not help you or answer questions. They are there own service company and charge any other contractor list! I gave up and refuse any work from them warranty or not.



So Taylor pulls the same bs as York, Carrier and Trane?

[Pauuly48]

Yes they do this unit is over thirty years old and they dont support it or have any information on it. I was told they can't find it in their archives and I can't get parts for it.

[nickellhead]

This unit is 30 years old

on the pressures its hard to say on r134a due to it wont be able to handle a heavy load but if you switch the ref to 409a you want the axv set at 1 to 5psi and since its a water cooled machine you want set the water regulator to give you about 160psi on your head psi

in standby mode it allows the mix to warm upto about 28 to 32 deg so you wont have an over beaten product

the control board controls the product refridgeration it should cycle about every 8 to 10 minutes to check the amp draw unless you draw some off and than a microswitch turns the compressor on


for the hopper ref I need to know if it has its own compressor or an epr valve

The belt tension is a 1/2" play

Hope this helps

[nickellhead]

Do you have any pictures of the machine