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If you could post a Serial number and specifically what error codes or faults you are seeing that would help us know more about the issue.

My money is on the slide valve being stuck or rotor locked. Either way you need to isolate and evacuate the compressor and do some internal checks. The tolerances in these compressors is so tight...

Good looking install. Any reason behind where the nipples got placed in the condenser?

I would highly recommend reaching out to the sales office of the big 3 in your area. With those types of quantities, they can get down and dirty cheap. You wave a PO for 150, 10 ton units under the...

Got a model #? I have changed out a few way back in the day but I don't even know that the parts would be available now.

Always a good idea to capture data and chiller logs prior to update to have the information backed up but you shouldn't have to manually input the info unless changing the dyna view panel itself.

If I remember I was told that it started in the spring of this year. Not sure if they got mfg'd before the roll out date maybe?

You need to find the design of this machine. Drawings, T&B report, something to tell you where you need to be. Pueblo can tell you specs on the machine and what it was designed to do. Get the...

How is water flow in relation to design?

Go for what you want. If you don't like it move on. The skills you pick up on one or the other will translate to the next oportunity. Don't know of a company that does both though.

Factory installed on RTAC and CGAM now!!!! Whoot!

Love them.

Not sure why we can't get them to factory install on CTV. Our office seem to like Orange Research for Centravacs....I will...

I have seen my share of Redi-Purges foul up. Plenty of crap on the liquid float that seems to need to be replaced annualy. Lots of liquid drain solenoids stopped up with crud.....

Just my $.02

Can you give us a full set of numbers? Water temps, ref pressures and temps etc?

OK Jay, why no 515 on the suction cover to suction ell? You have to put something on it because it is the shallowest groove and the ring won't stay. Especially since it often has to slide into...

We just replaced every heater in a central plant with 4 duplex machines. All of them drawing between 3 and 4 amps a piece and struggling to maintain temp.

Only if you hold it in your left hand.

Hope you never have to work on it. What a mess!

When you say trouble, do you mean that they need help with electrical troubleshooting or with actually reading the diagram symbols and tracing the circuit?

Who needs a heat pump thermostat? A handy switch like this will solve the problem! Too bad Billy Mays is not around to market it.

The biggest problem I have with these sensors are the wiring connections on the board. I hate those connectors. A poor connection here will give you strange readings.

Not to be rude but I think you need to spend some more time researching and reading on this site. All the questions you asked have been answered several times over here. Use the search function and...

Phisher nailed it. Circuit 2 is closer to the EWT sensor, therefore with low flow the temp drops there first.

WHEW! Glad you cleared that up for us! Please let me know which brands you think aren't crap so I can post some pictures of them in less than flattering circumstances. They all break and if they...

I can't confirm the 90 day money back trial but I can confirm the Dolphin being removed from several sites around here after about a year due to poor performance.

If the oil line solenoid did not shut the chiller should throw a diagnostic that it did not see the oil pressure differential trip the switch on shutdown. Can't remember the specific diagnostic off...

http://hvac-talk.com/vbb/showthread.php?t=145816&page=4


Is this the thread?

Some Trane chillers use a brazed plate as well.

He said he wasn't bright.

Digit 15 is "F" which indicates a standard evap, not remote.

Break out the heat gun and the patience. Don't let the customer or the boss push you cause replacing tubes sucks!

You might want to start a new thread with this issue. You will have better results getting responses.

I thought the same thing at first but then I realized he is probably refering to a chiller than dumps directly into a chilled water sump or other storage vessel.

I would think that would make the outlet pressure 0 and your calculation would be based on the inlet pressure.

If the startup guy was nice to you, he would have written the design specs on the inside of the control cabinet with a Sharpie.

Filter is supposed to be changed within the first year of startup but it never does. But you are right, I have found the line about being a "lifetime filter" to be less than accurate on more than...

Thats helpful! Funny and original too. An all around insightful, high quality post that makes this forum that much better! Bravo!

Can you tell that the unload solenoid is in fact energized? (Small screw driver works nicely for this) What is the piston pressure doing while the machine is trying to load? Serial number on the...

It's in there, I promise........

CVRD-SVN06A-EN is the CH-531 Starter only installation manual. There might be some info in there to compliment what you already have. I don't have an electronic copy on my laptop or I would have...

I have always wondered why we dont measure condenser approach as the liquid temp and the entering water temp. When we measure evap approach we want to know how well we transfered heat from the water...

I wonder if that same company gets to profit from changing compressors out after they take a crap from eating too much liquid refrigerant.

Not to get picky but the black classic does see momentary loss of power. It's called a distribution fault.

But you still have to haul that stuff up a ladder, freeze in the winter, fry in the summer and get wet when it rains.

Y-delta or across the line start?

If you have proper voltage across all three legs and are not seeing an amp draw on the second leg, combined with poor meg readings, sounds like an issue with the compressor itself. Does the...

Yes. There should be a twisted wire and a tab on the side of the valve that will be broken if your valve has poped. Let us know the model and serial # and we can probably do a better job helping.

You are correct. As the air flow increases, the VDC signal also increases. When you recalibrate the VAV, what should happen is the damper should drive completely closed, it will then measure the...

Did you meg the compressor with the motor leads on or off? Issues with the motor leads in the conduit can cause erratic meg readings. Does it trip on start-up, or while running? Y-delta or across...

Post the serial number so we know what era machine you are working with.

I know that Marley will package their tower in pieces. They should be able to give you component sizes so you can figure how best to get them to the roof. I am not sure if Marley feild assembles...