thanks, is there any way to check the H.P.R valve, from what I read it modulates on the suction press, is there some kind of pressure or temperature to look for?
Type: Posts; User: freeeze43
thanks, is there any way to check the H.P.R valve, from what I read it modulates on the suction press, is there some kind of pressure or temperature to look for?
condensing fans run continuous, headmaster to control discharge in colder weather ,I'm pretty sure that headmaster must be a 220 or 240 since ambient was 50 deg. on roof with a 240 psig, the only...
good point,wondering if the trim edges,l,r, sides suppose to be caulked.This ice maker was heavily scaled over at 1 point.
hi,ice maker not releasing cubes during harvest,freeze press. good @ 235 discharge,ambient 50 deg.,suction 48-23 psig,harvest discharge 141 psig,suction 75-70 psig,at low end of specs,temps out of...
Hi, original complaint, running warm, this is a r404 system with 4.25 # per nameplate data, original tech. on site diagnose bad expansion valve, replaced with new drier, same problem, head pressure...
Thanks, totally UNDERSTAND NOW THAT ISOLATING COMPONENTS THAT HAVE A GFCI THE HOT AND NEUTRAL MUST BE REMOVED, the compressor on this particular case doesn't start until 10 minutes but door heaters...
restaurant code I believe, all outlets are gfci
so by removing 120 volts from component is not enough to isolate, the neutral also has to be removed? why?
Hi, was wondering on the proper way to isolate components to detect what keeps causing gfci to trip, have a delfield reach in freezer that as soon as you plug it in the gfci trips,disconnected power...
typically your pressures wont equalize after shutdown with a restriction.
Anyone got ideas on who sells a good quality leak detector, can spend up to 400, appreciate it.
. This theory makes sense to me.
Instead of liquid refrigerant entering cap tube you now have a saturated condition at cap tube which is less denser resulting in a higher pressure drop across cap tube, refrigerant will then change...
Got to change out ceramic burmer on a frymaster pasta magic, anybody got any tips on how to remove and install new, thanks
I took measurment with caliper there is 1 tube that comes off the top part of the compressor and goes straight up which is 5/16 and put my schrader for suction press., and there are 2 tubes that come...
Hi, so what your saying is that on this compressor the 1/4 inch is the suction and the 3/8 is the discharge. i have never seen this before, i was trained that the smaller tube is going to be...
Hi, Anybody ever come across a new compressor with 1/4 inch discharge port acting and running as a suction port, condensor cold and evaporator warm, this is a single phase, 115 volt small 1/5 hp...
Hi, Anyone ever work on a mcdonalds multiplex ice machine, delfield makes this. the problem I have is that scale cannot be calibrated and was wondering if anyone knows on how to change out the scale...
Hey Ken, You guys are doing good, learned alot through my 2 years, between you, Dave, Gene, and other instructors. What I learned goes along ways. Sure being in the field and actually getting hands...
Thanks for the info, first time for everything. actually next week I got a job at a boston market, replacing evap.,cap-tube and LL drier, maybe this one will have a accumulator also. if it does, i...
From my experience on cap tube restrictions is that if correct amount of refrigerant is in system, it will look undercharged, low suction, low head press.,but high subcooling and high superheat will...
Hi, Wondering if anyone has any thoughts on this A19 temp. control in a walk-in keg cooler failing, this is oem t-stat for this r-22 walk-in cooler that has been replaced 4-5 times in the past year,...
http://www.emersonclimate.com/Documents/FlowControls/pdf/Catalog_Flash/SystemProtectors/ADK.pdf
sounds like system overcharged to obtain a good suction press., more than likely cap tube partially restricted and comp. has been compromised. so yeah this unit will need to be repaired. talk to...
did you try adjusting water reg. valve, maybe plugged,not sure on what delta t from in to out, check spec and adjust as neccessary
were you able to measure S.H. , with bulb attached securely to outlet of evaps, this is were txv sensor should be clamped securely at about 2 o,clock position and well insulated, i have seen systems...
who has bestest price on digi-cool gages,and yeah CANCER SUCKS,, MY DAD was just diagnosed,,never seen a good hard working man that would help anybody out in aheartbeat get torn and ripped apart in...
Slightly undercharge, add a small amount of refrigerant,actual subcooled at 9 deg.dont go any higher than 15 deg., should bring head press. a little higher. 175-180 psig and suction 15-20 psig,with...
Most of units that i encounter have no press. switches, be lucky to have a schroeder port.. Next time that i am cleaning the cond. coil I will recomend installing dual press switch, low/high press...
I work on alot of these small hermetics and totally agree that factory should install hi-temp/press. cutout alomg with low-press safety as some of those factory braze joints leak keeping comp....
adjust txv to 10 deg. superheat and measure sub-cooling,add refrigerant as neccesary,start with the 30 deg. over ambient,after txv is set, the head press. will drop and youll probably show that you...
Assuming you evacuated to below 400 microns and not undercharged(add a couplemore oz.. to see if you can get abetter head press.) if this doesnt work, most likely cap tube partially restricted. How...
Torching the receiver will give me a indication of how much liquid is in receiver,correct, right now i know for a fact that the receiver is pretty full,this is around a 6-7 lb system, when trying to...
Thanxs for all the info, but this unit is above walk-in cooler(inside) no headmaster. what i did was backseat king valve and removed filter drier,added temp. shraeder, put my hoses on and then take...
sorry, meant no temp difference across drier..
Has anyone come across this problem before.no refrigerant at LLS,sightglass empty 100% sure and temp difference across drier, add refrigerant and it just sits in receiver.
checked out system again, got no refrigerant downn at lls, it seems to stop at receiver. did anybody here of pickup tube in receiver plugged??? if so how to check..
So from what I am hearing is that if you have a high side resriction ,the head pressure will be low on a full charge.
Close the king valve, run comp a minute, with LLS calling, the loosen bolts on LLS and do a "deminimus" release, remove piston, close LLS back up, open king valve and try again.
Also, if powerhead...
forgot to mention that sightglass had no refrigerant passing thru, filter drier was just replaced a few moths ago, could this get fully restricted. also i always thought that if you had a restriction...
Got a call,walk-in warm..found comp. cycling off low press. switch. hook on my manifold. system is r22 press, actual 145psig and 15 psig on suction line. system leak I thought. started to add...
impossible to get 30 in. of vacuum..29.9 something is a perfect vacuum, wouldn't recomend running a comp. in a vacuum. shoot for 0 psig and hold..
How many microns did u pull?Subcooled temp?suction press. seems a little high for freezer, did u get 10 deg. S.H. at txv bulb? possible overcharged....
Had a similiar problem with a masterbilt freezer, called tech support and they talked me through on setting parameters and were very patient until problem solved.. good luck
system being worked on is a rack with 2 fans with one of them has fan cycling,it can get pretty cold in WI, maintaining head press. in winter can be a challenge,best to be sure you have a reliable...
uses r404a, which means 180 psig and the lower number wont be in play, correct? thanks again
Hey, question on changing out head press. control valve, the one that i am changing has a bad leak, cust. wants this changed asap, the only thing is the valve that i need a sporlan 70/180 is not...
Thanks much, understand alot more about how this valve functions.. what i ended up doin was increse cpr too 40 psig and this did drop system suction press. somewhat on a hot pulldown, eventually the...
with this valve inline,would this system pull into a vacuum when doing a pumpdown.would it respond the same as a system that doesnt use this valve..
Hi, have a walk-in freezer that wont drop below 20 deg.. cannot find any problems except for cpr valve, At suction service valve that is downstream of valve is at 19 psig,(r404a systemm,txv metering...