Search:

Type: Posts; User: pbcd

Page 1 of 5 1 2 3 4

Search: Search took 0.00 seconds.

  1. Replies
    8
    Views
    1,083

    Thanks for your responses. Looking in the Config...

    Thanks for your responses. Looking in the Config and Service screens there is only one deadband setting for water/brine. It is set to 1 degree. My oil pressure is approx. 80 psid, which is the...
  2. Replies
    8
    Views
    1,083

    Freonrick, I'll check the dead bands. If the...

    Freonrick,
    I'll check the dead bands. If the slide valve is leaking, could it still make the 45 degrees when I drop the set point? I never worked with the slide valve, how would I go about...
  3. Replies
    8
    Views
    1,083

    Unfortunately no....

    Unfortunately no....
  4. Replies
    8
    Views
    1,083

    Carrier 23XL Problem

    I have a Carrier 23XL4343ED40 screw chiller. The chill water supply set point is 45 degrees. Recently the chiller has been supplying 48 to 49 degrees. The evap. press./temp is also higher. If the...
  5. Thread: Fan speed signal

    by pbcd
    Replies
    2
    Views
    430

    I'm inquiring as to what type of electrical...

    I'm inquiring as to what type of electrical signal is being used for "fan speed changes and cooling"?
  6. Thread: Fan speed signal

    by pbcd
    Replies
    2
    Views
    430

    Fan speed signal

    I have a Carrier 33MC-URC Room Controller with a 40KMC fan coil unit. The controller has the Power (P), Ground (G) and Signal (C) connections. Question: What type of electrical signal is being...
  7. Replies
    19
    Views
    1,357

    Thanks for the response. The caps are for the...

    Thanks for the response.

    The caps are for the run windings.
  8. Replies
    19
    Views
    1,357

    370 volt capacitor

    Why does some motor manufacturers specify (on their nameplate data) using a 370 volt capacitor on their 460 volt single phase motors?
  9. Thread: Oil heaters

    by pbcd
    Replies
    10
    Views
    1,017

    I don't have the model numbers on hand, but it's...

    I don't have the model numbers on hand, but it's really not relevant.
  10. Thread: Oil heaters

    by pbcd
    Replies
    10
    Views
    1,017

    Oil heaters

    Why are the Carrier (don't know about other manufacturers) screw chillers not designed with oil heaters? Just curious.
  11. Would the VFD output voltage reading taken across...

    Would the VFD output voltage reading taken across the phases be accurate with a VOM?
  12. Thank you for your response .................. ...

    Thank you for your response .................. very interesting.
  13. Puzzling electrical readings taken at VFD bypass contactors

    I have a question concerning an electrical test reading taken at the VFD bypass contactors. This VFD provides power to a 15 HP motor for an air handler unit. To check resistance across my contacts...
  14. Thread: tattle tales

    by pbcd
    Replies
    11
    Views
    4,966

    The lock out relay senses the fault and opens the...

    The lock out relay senses the fault and opens the circuit faster than the reaction time of the tattle tale. Once the circuit is open the tester is useless. You may want to temporarily bypass the...
  15. Replies
    7
    Views
    3,114

    Yes, it is a pull thru design. Thanks for...

    Yes, it is a pull thru design.

    Thanks for all your comments.
  16. Replies
    7
    Views
    3,114

    Thanks guys! I'll try to get back to that job...

    Thanks guys!

    I'll try to get back to that job soon and check it out.
  17. Replies
    7
    Views
    3,114

    Air handler vibration / pulsation

    I have a large McQuay air handler (LSL141DH) that vibrates / pulsates when the VFD ramps up (>50 Hz). If I open the door at the blower side (downstream of the coil) the vibration / pulsation stops. ...
  18. Replies
    0
    Views
    483

    Motor frame number

    After researching the Internet and looking at our spare motors on hand, it looks like the motor frame sizes does not always reflect if the motor has a rigid mounting base. I read that the "H" suffix...
  19. Replies
    4
    Views
    633

    Thanks absrbrtek. I'll check out the online...

    Thanks absrbrtek. I'll check out the online ordering. Hope they also deal with the Federal government. I'll check it out.
  20. Replies
    4
    Views
    633

    Thanks for the reply. I previously spent a...

    Thanks for the reply. I previously spent a couple of hours browsing the Internet and making numerous phone calls. I could not find anyone that would provide York chiller parts to Hawaii. I would...
  21. Replies
    4
    Views
    633

    Looking for a York Vendor

    I am looking for a vendor that I can use to purchase York chiller replacement parts. I am very dissatisfied with the service from our local York office here in Hawaii.

    Thanks
  22. Replies
    0
    Views
    550

    Does anyone know what would be the average...

    Does anyone know what would be the average "motor" temp range when using properly sized space heaters?
  23. Replies
    6
    Views
    913

    x-wrenchturner The SST doesn't utilize a...

    x-wrenchturner
    The SST doesn't utilize a compression fitting. Thanks anyway.



    jrbenny
    The SST thermistors on several units already have slight bends on them. I guess I will try to...
  24. Replies
    6
    Views
    913

    Has any one encountered problems with the Carrier...

    Has any one encountered problems with the Carrier flotronic chiller saturation suction thermistor slowly pushing out. If so, any remedies? Thanks!
  25. Replies
    9
    Views
    787

    Thanks guys you have been very helpful.

    Thanks guys you have been very helpful.
Results 1 to 25 of 112
Page 1 of 5 1 2 3 4
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event