Search:

I'm hanging a few heaters and the current voltage is 480/460 and heaters require 120. If I was to transform from 480 to 120 v with a unit requiring per data plate 10.7 amps would I need a transformer...

Open

The diagram look s like this one Figure 33. Fan powered, three phase, wye, 2 stages

Sorry I meant to ground

I have 500 v across the contactor an no amps. The heating ohms out and has continuity on all legs so still unable to heat the coils up. I was able to bench test coil with 480 and heats up just fine.

Im trying to loa 2 pic but site wont let me

Yes I bypassed safeties for 3 minutes to see what was going on.

They are mercury as I have replaced them with the same contractors calling MDI who sells the contactors that were in the unit. CAT NO. 235NO-24A-18 They are 24v coil 35amp@ 600 vac resistive

I replaced the mercury contactors with the same contactors and I do read 500v going to the heater coils and heater coils did ohm out and I had continuity on all heater legs yet the heater doesn't...

Its a 2014 model I found out and cat 5 connector

I had a bad mercury contactor, so I bypassed the contactors until a new one arrives. The heating coil goes off on the Hi-limit, so I wait until the fan is running and reset the limit, but the unit...

Has anyone experienced fan off and on repeatedly? heating Coil comes on then off on limit but the fan still comes on and off. I cant figure why its doing this

It ended up being 2 burnt wires

The issue is oil heater will not heat in the off cycle and only heats in test mode. I have no amps when in test mode and when off I have OL resistance. Why is the oil heating only in test mode if I...

I recovered for an hour and the system went into a vacuum.

I will replace a compressor on a Carrier 48A3TO50C4-62AHT; the data plate says 59 pounds. There are four compressors and two circuits connected. I recovered all the refrigerant and 12 pounds only....

Looks like CCM board needs to be replaced as not getting signal to heater on down time

I have a carrier chiller and the only way to warm the oil before starting up is to put it in test mode to get oil above 100 degrees. AquaEdge®
19XRV
Single-Stage or Two-Stage
Semi-Hermetic...

Have you ever had to replace the motor on tempmaster? I have a unit and I see two motors. The contactor pulls in and cap is perfect at 10 mfd but motor barely turns and is not seized. Just wondering...

I'm also wondering if I could re-wire it as well. I have to pull from duct to see where the break is in the wire

Looking for a duct heater replacement for old 1977 Tempmaster. 460v 3 phase 8.8 amps 7kw. Any suggestion

Yes, its a Direct fire makeup air unit. I just got on this account 6 days a go and trying to get all fixed before a Utah long winter

It's been two months, and unable to find the main control board as some left doors open and rain took out board in Trane DFO218 HRB. Trane doesn't have a board and was wondering if anyone knew where...

Emerson has approved Spectroline UV leak detection dye for use in its Copeland compressors – the endorsement is claimed to give the dye the only OEM certification.

Ultraviolet leak detection works...

https://youtu.be/h9p-ihAGSL8

So the carrier class I went to the trainer lied when he said you can use dye to look for leaks?

Is this electronic and is it opening all the way? I will call heatcraft even though they were awarded the worst tech support in the industry

Why sit? Paid to work not sit and and FB

Parts town

Have you checked with parts town? I would use national for Manitowoc as they were the preferred dealer but parts town 97% had all the OEM Manitowoc when needed

Slc is awesome, I used to live in Holaday/ West valley area 24 years

Theses are so helpful. Thanks again for help on this

Thank you so, so so, much I really appreciate this. Life saver

Maybe switch leads on the cap

I'm working on a building and they have 30 plus Tempmaster model HFS-1500 Date 10/77. Has anyone worked on these units as they look simple but I have no spec and need some The Dampers motors...

I changed the stat due corporate policy which is irrelevant. Issue before was room was too cold now to hot. I used redlink honeywell stat with redlink remote temp sensor which we like. The RTU is a...

What Pressures would you want to see on a cooler I was told high side about 250 to 270 low side 40 to 60 psi.


Sent from my iPhone using Tapatalk

The receiver valve was replaced so everything was evacuated properly but I think what happened is when they were soldering in the joints they filled the pipe full of solder causing a blockage I will...

I meant relocating the machine. I haven’t done any repairs yet except I changed the toggle switches we found the toggle switch was bad. I’m thinking it might be the solenoid that goes to the...

We are Locating the ice machine I’m only able to get 2 pounds in before the unit shuts off. I checked the solenoids and they seem to be opening what else would cause this unit to only except 2 pounds...

How is it confusing I just want to know if the outdoor ambient control operates the outdoor fans for both the cooler and the freezer and what is the constant psi to maintain a 35° in the cooler. To...

We’ve already answered the question we’re about five steps ahead of you someone has already answered it and will get you next time though

The simple question was and I’ll restate it for a walk-in cooler does the condensing unit ambient Control operate the condenser fan for the cooler compressor. THATt was all and then I was wondering...

Those were the links that Heatcraft gave me that just shows you how bad the support is these are the links that were given to me on Friday

I think we’re all good Mcdonald’s is changing vendors the problem has been solved doing six remodels and we will not be using Heatcraft what a relief

Condensing fans evaporator portion is fine it’s the condensing unit I’m having the issue with. If I had a wiring diagram it would be different but I can’t get the diagram

I just copied and paste did it from Heatcraft my apologies I did not even notice Heatcraft’s email that is internationally available was in the Post

Now I understand when they’re talking about people like you the sharks of HVAC

Subject: Initialization beacon ll Smart controller
Press and hold the enter and the clear buttons until The screen reads EEROM
Quickly release the enter and clear buttons then press tthe enter...

Only thing there is is an adjustable time delay relay, factory said it one minute is wired across the low pressure switch in cold ambient, this allows time for the suction pressure to build up and...