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  1. Replies
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    HoneyWell Node Crash

    Hello,
    I maintain a Honeywell Excel 15b controls system. The system repeatedly has "Node Crash," in its alarm log. What does this mean and how to I make it go away?
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    Honeywell Excel 15B Node Crash

    Hello,
    The question pertains to a Honeywell Excel 15b and one alarm in particular. The alarm says "Node Crash"...Excel 15b. I assume this has to do with communication loss. However, can anyone shed...
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    2,993

    UPCM

    I don't recall becasue I've been running the software with DOS Box for a while. I think the software may work but runs into problems later. If you get it to run standalone mode then great. Unless...
  4. BMN software

    I can't really send you any software because ma Trane frowns upon such activites...Contact you're local Trane office...
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    UPCM and BMN

    I have Windows 7 and could not use any of my old DOS programs like UPCM. I had to install a third party DOS shell program called DOSBOX. The software allows the user to run old DOS programs. The...
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    BAS Change

    NOSKILLTECH is absolutely correct. You will spend hours of your life learning things you will not get paid for. In addition, I've spent hours of my life rewriting code for free. If you like to be...
  7. VAS

    To be honest with you I don't always set the min CFM exactly at the min of the unit. However, if the system has old air handlers then I do becasue older units don't have high pressure safties like...
  8. Tracker

    The password is 1111 and I believe the dip switches can disable the Tracker password. I'll get back you on BMN.
  9. Min CFM Set Points

    Scrooloose is correct about the min CFM setting and along with his other comments. However, you asked what the minimum CFM set point should be in VAS. Well, letís understand what the primary purpose...
  10. I believe the HyperTerminal settings are the same...

    I believe the HyperTerminal settings are the same for Tracker as they are for Tracer 100. However, the baud rate may be different. I know the key strokes for both Track and Tracer 100 are the same....
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    Change of scenery

    I started out as a mechanic and moved over to controls about ten years ago. Controls are very cool but it is different. The work is less physically demanding but it is still demanding. Controls can...
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    Condenser Water temp

    You are correct, lower condenser water temps should be only used with refrigerant pumps. However, the lower condenser temps are not just limited to adaptive view units. Lower condenser temps can...
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    Condenser Water Temperatures

    Here is some newer documentation concerning condenser water temperature. The information youíre looking for is on page 7.
  14. Replies
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    Condenser Water Temperature

    If youíre interested service bulletin CVHE-CSB-40 tower water temp and the myth that Trane chillers need warm water. To paraphrase the service bulletin, if you maintain a 5 PSID across the condenser...
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    Cooling Tower

    Yea it's only about 50 tons total compressor capacity. Irregarless, the system needs more condenser because the old one is under sized. I figured water would be the way to go.
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    LCP

    Let me know if you need anything else...
  17. Replies
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    Water Cooled

    What I meant was a small cooling tower recirculating the water. The water is reclaimed so the cost is minimal as far as water goes. Iím curious about the electrical cost with lower head pressures....
  18. Replies
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    Converting air cooled to water cooled

    I'm in the process of upgrading a condenser for some coolers. I've thrown the idea of going water cooled at the customer. Does anyone know what the operating savings would be going from air cooled to...
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    High head pressure

    It seems in my case the previous techs and owner just ignored the problem becasue of the automatic switch. I even had the relief valve blow because one of the switches failed from too much cycling....
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    611

    LCP Panel

    This old DOS software is a little quarkery and I assume that you don't work with it much. I'll try and explain this the best I can with visuals. I've attached a Word doc going through the basic...
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    2,527

    High pressure switch

    When the automatic switches were in place the customer would ignore the fluctuating temperatures. However, after installing the manual switches the customer wanted to address the high pressure...
  22. Replies
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    High Pressure Switches

    I must ask someoneís opinion after being out of the refrigeration side of the business for a few years. I have a customer with several walk in freezers and coolers with automatic high pressure...
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    Emerson Controller

    Thanks for the information, the controller sounds like it's staright foward. By the way, I'm already a controls freak
  24. Replies
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    How do I setup an Emerson Controller

    I have an Emerson 834-0400 controller for a refrigeration rack and it has never been setup. I'm not even sure if the controller even works. My question is, do I need some special software to setup...
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    Condenser Fan Running backward

    I agree, baffles will be needed and will be installed later.
  26. Replies
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    Condenser Fans Running Backwards

    Putting a VFD on the fans was my first choice. However, the customer opted for the cheaper alternative (What a surprise), the anti-windmill devices mentioned below. For your information, the way the...
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    Web ops Literature

    Give this a try...
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    Condenser Fan Running Backwards

    I've considered some a spring closed type of damper on top of the condenser fans. The concept of having air get drawn through the condenser fan that is off does not seem efficient. However, I'm going...
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    Condenser Fans Running Backwards

    I have a refrigeration system with multiple compressors sharing the same condenser section. The unit is configured so that two fans run per compressor. As a result, when two fans are running air will...
  30. Tracer 100

    Here you go, have fun...
    :cheers:
  31. I have the regular EMTB-PG

    I have the regular EMTB-PG
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    Nice

    That's typical corporate america paying the lowest wage they can for refrigeration mechanics.And Corporate america is getting exactly what they pay for. I guess it's called job security...:whistle:
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    BMN Problems

    The Activator is a device which plugs into the old DB-25 comm port of the computer. The Activator allows someone to add the amazing 16 color custom graphics to the BMN software...LMAO:grin2:. The BMN...
  34. Scrolls

    I'm checking the information you sent me and thanks for sending it. However, looking it over briefly I would assume the condenser coil needs to be a little larger in this application? Also, I assume...
  35. Recips

    Thanks for the responses it clears up a few questions I had. One last question, I understand it's more efficient to run with one large rack instead of a bunch of smaller compressors. Does anyone know...
  36. recips

    Interesing, I wouldn't have guessed that about scrolls. Does that go for screws? I also assume water cooled is it more cost effictive to operate instead if air cooled?
  37. Recips used in refrigeration

    I've seen scrolls on some refrigeration systems and I've heard of screws on others. However, it seems that A/C companies are forced to go with the scrolls because of the higher efficiency standards....
  38. Why do refer companies still use Recip compressors???

    I've been out if the refrigeration side of the business for a few years now. The other day someone asked me to look at their 160 ton rack unit which is about seven years old. I looked inside and...
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    Temecula is nice and you can commute 60 miles to...

    Temecula is nice and you can commute 60 miles to San Diego like the rest of us. By the way, even though housing is lower, its still expensive compared to the rest of the country.
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    Copeland Compressor

    Thanks Remanworld I appreciate the info. Right now I'm waiting for the parts and yes I'll install the center bolt.
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    Sequence of operation

    I have lots of experience with this kind of system and you really need to do your home work setting it up. First, bypass valves are typically in a system to maintain minimum water flows and or...
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    Heat Exchanger

    Let me guess, the new chiller model number is a CGAM? The flat plates have pressure drops just like any other chiller barrel. So install the flow switch down stream of the flat plate. Follow the...
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    Unloaders

    I think ASCJ is correct, stay with one loader because potential problems. However, I would consider the unloader if the compressor has short cycling problem. Also remember that suction dryers are...
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    Sensors

    As far as flow switches go we always put them on the outlet side of the chiller barrel. The water pressure across the barrel drops and the low pressure side is on the outlet of the barrel. With that...
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    I assume this is a chiller? What is the history...

    I assume this is a chiller? What is the history of this unit and does it have a flow switch? The evaporator tubes maybe crushed and leaking refrigerant into the water.There are three indicators to...
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    Unloaders

    I think unloaders are a good thing even on constant volume systems. Unloaders will reduce short cycling under lower heat loads and dehumidify the space better. However, a multiple stage thermostat...
  47. Replies
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    Heat Exchanger

    Can you be a little more specific? What type of chilled water piping configuration are you referring too. What are you attempting to achieve?
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    Going Pro

    Going Pro is my goal
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    Compressor Gasket

    Thanks for your input its making sense. This units does have poor piping and low superheat. However, I've always thought of blown head gaskets as a compressor problem but you've convinced me...
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    Compressor gasket

    Sorry to burst your bubble pal but I'm a service guy...20+ years. Got into controls about eight years ago and I visit the wrench now and again. So unlike other technicians when there is a controls...
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