enviroguard Tyler rack

[sumdumguy]

didn't even cross my mind...stay warm

[MikeySq]

I'm in the process of figuring out this system even thjough I hardly even work on any anymore, I actually went to a cal last saturday before reading or seeing this thread and I copied down the 3 valve model numbers

reciever inlet sporlan OLDR-15
Reciever bypass sporlan E3452110
reciever pressureizer sporlan special pressure reg valve, CROT U -6 80/200

i gotta look in to it and hopefully i can figure it out in my own way

Mike

[mckim]

I work for a company that is putting in a supermarket for a customer that has bought used hill/phoenix cases and a tyler (envireguard) low temp. rack 1991 model# P9OL-31 SERIAL # w628933 And a warren/sheer medium temp. rack. I basically need to answer three questions. 1.) How do I determine the total heat of rejection of the rack and the condenser? I want to make sure that the codenser is large enough for the rack prior to pipping it in. 2.) Should I replace the old DDR valve with a new LDR valve? And if so what is the difference between a OLDR and a LDR valve? And should it be energized or deenergized to create the 20 psig differental to allow the condensed hot gas back to the rack through the liquid line? 3.) Is it a major job to take out the old A78 paragon timer modules and replace it with a cpc controller?

Thanks,

Mckim

[aejoecool]

http://www.hillphoenix.com/tyler/mec...ual-lowrez.pdf

[Servtech09]

I am working on a Tyler enviroguard 3, my head pressure is erratic causing the spr solenoid to stay open and dump all the gas into the surge tank "receiver". I've changed the discharge transducer, but controller still shows on average 60lbs higher then my gauges show. Before I started on this, somebody had recovered all the freon because they thought they had air in ten system. I have to close spr ball valve to keep system running normal. Any advice?

[MikeySq]

I would fix your PLC issue,start there, if its 60psi higher than gague you are going to have to fix that

and you better check your compressor high pressure safeties!