No all fans are on one ABB drive. Need to control static pressure so need to know basically how to program the pid loop and variables so ramping is smooth. I’m a chiller tech but also take care of...
Type: Posts; User: HJ Controls
No all fans are on one ABB drive. Need to control static pressure so need to know basically how to program the pid loop and variables so ramping is smooth. I’m a chiller tech but also take care of...
Setting up drive for fan wall. Need help programming and setting up pid loop to control 0-10vdc signal to control drive. If ur ember right I convert input static to a variable then create a variable...
I have some old kmc lc500 controllers. Any one know where I can
download a users guide. Also I don't know if I should change the firmware
chip or if these things have a memory chip.
The...
open exv and see if it drives up and down, check orfice to see if its scared or scratched up, the iom for that chiller should tell you how to check it. also check the thermistors to see if they are...
check oil level in separator, should be at bottom of upper sight glass, change oil filter which you have done, check oil pressure and discharge pressure transducer accuracy. Clean condenser coils if...
oil pressure lower than discharge pressure by 80 lbs is a lot. I would change the oil filter. Its located in front and is behind the the round cover just above the heart shaped cover. Need to order a...
time-delay relay
Thanks I looked earlier but just didn't dig deep enough.
Anyone know where I can get a service or iom for a whr200d w mc quay chiller.
Where do u live. I am from Fort Worth. Also there are so many different sizes if I can just get them in town so much easier. On one job there are 4 chiller with 13 circuits.
Model number I have on...
Takes over a week to get them in.
Thanks for the info on transition time, its not in the IOM.
YCAS0330 AND YCAS0440 what is the transition time for starting compressors. Also can I replace the o rings for the option ports on compressor with high temp O-rings or need to be factory. Thanks
Have rc2 and toolkit. I thought i was configuring the controller wrong. I didnt port forward correctly.
MachProCom. Not webcom. Trying to figure out how to setup the configuration. Where to you input the ip address and mac for the router I am connecting to.
Anyone know how to configure and set up controller for ethernet
We have some customers with older systems still using modems. I couldn not remember how to access modem to program. Thanks for the help.
trying to config a modem using hyperterminal. Anyone know the steps to doing this.
I am connecting through a usb to serial adaptor.
thanks I found it. I had a brain fart and was looking for hyperlink
you will have to have rc studio and an xport2 to connect. then if it is rcp you will have to change the points. example would be a variable you would change from var to av or bv, likewise an input...
more than likely it is rcp and not bacnet
more than likely it is setup as rcp protocal and not bacnet.
I need to program a modem but cannot remember the name of the program I used.
Hyperterminal or something like that. Or if anyone can help another way I would appreciate the help.
critter chewed all the wires to the press.transducers, water sensors and temp sensors. never seen this before.
I dont have access to techview. I should have worded this differantly. Every single alarm these chillers can display is in alarm. I do not beleive these units have 15 or more problems.Probably a...
yea. both these units do not have 15 or 20 problems displaying alarms. The tech said the alarms will not clear. I am reading the oem. and would like to know the how to reset these alarms. It maybe he...
Have a customer that says he has two CGAM080 Chillers and the units have shut down on multiple alarms. He cannot reset the alarms. I am going monday to check them out. The IOM manual says there are...
The reason for the change was to lower the expense of r-22. MO99 is also expensive. From what I am hearing true or false ? Looks a little risky. I believe I will just keep on going with what I have....
system is already poe. i knew that you would lose capacity, but manufacture said that you could freeze up the cooler barrel ? Wondering if anyone has done this to a ycas.
I am working on a ycas0330 York screw chiller. Has any one converted over to 407c.
TXV is 22 or 407c. Anything need to done out of the ordinary. Thanks for any help
Sorry working a lot of ot. System was not flooding. the discharge pressure relief was week. The oil screen was plugged up. I didnt believe it as this compressor was changed out a few weeks ago. Not...
I think it has to do with the crankcase being to hot and thinning out the oil? I need to know if these compressors use suction cut off unloading or just bypass. I got 2 systems doing the same thing...
Technical Systems M# 20A0CS40 460 VOLT Condenser, Dunum Bush Air Handler very old. Copeland compressor model 6DS3R40M0-TSN-800. epr, suction acculator, reciever and hot gas defrost.
I am running...
go online and get the paperwork for that unit.
Check to see if the configuration is set to equal loading or staged. Equal loading means one compressor then two compressors then load one compressor then load other compressor. Staged would be one...
an exv is an exv. It has a motor, windings, some type of guide a orfice of some type and it recieves a signal or voltage to operate from a controller or source. And we are trying to help him with the...
dont forget circuit has to be fully loaded before checking. if circuit is unloaded then you could see bubbles. but the lower the ambient the higher the subcooling, the higher the ambient the lower...
read the last part, get service manual. trying to give helpful hints and some ideas.
check discharge superheat or suction superheat depending on chiller. then load up chiller, and watch and see if exv maintains proper superheat.
just say your discharge superheat is low like 15...
check and see if compressor is not flooding if it is then check charge, temp sensors and exv, also check your motor cooling solenoid and motor temp sensor.
Dont know Metasys but ask them if they could put a power loss statement in the program. What I mean is if there is a power loss then occupied setpoint would = say 70 and unocc. setpoint would = 80...
use a drier with 1/4" flare fittings, attach between two hoses and run the refrigerant through the drier as your charging the system. And remember to purge the hoses.
only four days youll be ok with changing the oil and installing hi mosture driers.
We had a fire system guy drill a hole in a condenser and it was at least two weeks before we got approval for...
highly unlikely you would have air in water cooled system. if you did then you would have high head pressure
oil pressure problems: flooding, running unloaded for long periods, broken valves or rods, restricted oil line tube, bad oil pressure switch.
if you low head and high suction i would look at your...
230 and 240 same thing. make sure your not wired for 208. Check belt tension. never heard of a start cap on a motor do you mean run cap. check starter, overload and wire teminals for any loose...
residential units usually carry small amounts of refrigerant. if you are having trouble recover the refrigerant, add r22 and pressurize with nitrogen.
as far as leak detectors i like the d-teck. the...
txv by subcooling, cap tube or orfice by superheat.
thanks.
flooding, broken valves, unloaded to long, faulty hydrolic assembly, what you need to do is fully load machine and take sh and sc also pressures, amp draw and submit them so we can give you a valid...
your right. i was trying to figure a way to read static, maybe convert the velocity or some thing like that.