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  1. That's helpful. Thank you. I think I'll adopt...

    That's helpful. Thank you. I think I'll adopt that approach.
  2. Replies
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    They did however start me at $40/hr. So I feel...

    They did however start me at $40/hr. So I feel like I shouldn't be complaining. Is that enough to not complain about those other things?
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    Non-tech tasks

    What about other tasks like parts and drive time between stores?
  4. In-house tech: everything should be fixed the first visit?

    I'd say about 90% of the calls I get for our McDonald's stores are repaired the first visit. However, there are times where I find a common problem that looks like the cause of all the symptoms and...
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    Typical overtime policies?

    I'm an in house HVACR technician for a McDonald's franchise. I'm the only one in the company that does HVACR. I'm an employee not an independent contractor.

    I only get overtime after 8 hours if...
  6. Yeah it's a 3 stage package unit, everything is...

    Yeah it's a 3 stage package unit, everything is shared. I'm just wondering why I'm only getting 1400 cfm from the return air duct. Is that all that a 13" inside diameter duct can get? I mentioned...
  7. So at the evaporator my airflow meter is reading...

    So at the evaporator my airflow meter is reading 5400 cfm. When I manually close the economizer and take the reading at the return air inlet inside the restaurant I get 1400 cfm. There are two...
  8. Condenser coil is clean and fins are fairly...

    Condenser coil is clean and fins are fairly straight, good airflow. Also, airflow across evaporator is within specs.
  9. 3 stages, same pressures, different subcooling

    Lennox LGA/LHA180 package unit

    Ambient: 85F

    Condensing temp: 122F
    SC 1: 34F
    SC 2: 18
    SC 3: 25

    Evap temp: 42F TXV metering
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    Finding cause for blown fuses

    I have a walk-in freezer blowing fuses almost every day usually around 8:30pm, defrost is set at 6:00pm for 40 minutes. First it was blowing the 30A fuse on the safety disconnect for the first leg...
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    anyone got any ideas? I have to go back to work...

    anyone got any ideas? I have to go back to work on this unit soon.
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    Icing accumulator when flushing

    I'm working on a Franke reach-in freezer for one of our stores. I diagnosed it as a plugged cap tube because the suction was way low and it was overcharged. Dryer was fine, and it wasn't equalizing...
  13. That is crazy... so crazy I think it's just the...

    That is crazy... so crazy I think it's just the thing I was looking for.
  14. Best way to unclog/change out orifice?

    Carrier
    Model: 48TMD012-A-501--

    I have 4 partially clogged orifices on the 2nd circuit of this package unit. I've already tried flushing nitrogen at high pressure in reverse flow and they're...
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    Pump down without receiver?

    I'm working on the walk-in cooler in a MAC 6 fo one of our mcdonald's store. Evaporator is a Bohn model MCA0901D. It's got a starved evaporator, uneven frost pattern. I need to know what type of...
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    I'll try to clarify

    I don't think it's a low charge because there's no temperature difference across the txv. The suction pressure says that it should be about 20-25 at the outlet of the txv and I'm getting 75 at the...
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    York Model: D2CG180N24025ECA So this is my...

    York Model: D2CG180N24025ECA

    So this is my first time working on parallel compressors. Two 5 ton compressors connected to the same refrigerant lines. Head pressure 160 psi / suction 45 psi....
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    Parallel Compressor Troubleshooting

    York Model: D2CG180N24025ECA

    So this is my first time working on parallel compressors. Two 5 ton compressors connected to the same refrigerant lines. Head pressure 160 psi / suction 45 psi. ...
  19. Condenser Fan

    It is a small condensing unit used only for the walk-in cooler, no mac 6 or 7 at this store. Also, no name plate so the info for the evaporator is all I have. The bimetal switch is definitely not...
  20. Low Ambient Fan Speed Control on Walk-in Cooler

    I have a couple general questions about low ambient high and low speed fan controls for walk-in coolers in the los angeles/san fernando valley area. How crucial is it to have the two speeds in this...
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    Thanks!

    Thanks all! It worked out well. I backed off the nitrogen more and just made sure there was enough ventilation. Did all 8 welds without turning too purple. :) Next time I'll know how to do enough...
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    Icemaker brazing trouble

    Alright, I applied for pro membership because I need it. Anyone know how long it takes to get approved?

    Until then, I need your guys' advice on a problem I'm having brazing an ice-o-matic ice...
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    Evap coil

    Is there a way to check cfm without an air flow meter? The evaporator was clean all the way through and the fins were straight, rotation was correct and the blower wheel/blades looked like they were...
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    Two stage package unit icing up

    Carrier
    Model: 48TMD012-A-501--
    Voltage: 240 V, 3 PH
    Pressures circuit 1: 34/210 R22
    Suction line temp: 40
    Pressures circuit 2: 45/210 R22
    Suction line temp: 50
    Ambient: 75

    On circuit...
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    Repairing leak on U-tube junction

    https://lh3.googleusercontent.com/Yz74Wtc-QuZoeYq4OOf0X_JWc4sjGvq6QrLLC5ADeu3rLrVOAmA5d91E_2gjli8yHiwacAO_v7030-4kKi7lnbiGqg=s512

    In the picture above there's a leak on the bottom u-tube on the...
  26. yeah, I was wondering upon reflecting on the...

    yeah, I was wondering upon reflecting on the symptoms if that's what it might be. I'm not sure how long it was running without the fan, the manager just told me he turned the unit off after hearing...
  27. update

    update: the manager now says that it was hissing before and that's why they turned it off and called for service. so apparently it wasn't anything I did. Also, I don't think this is effecting it...
  28. Hissing sound after condenser fan motor changeout

    I have a franke 7rf01 reach in freezer (wall mounted). Service call was that the condenser fan motor wasn't running. I confirmed it was bad and changed it. It's running fine now but there is a...
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    Thanks! that gives me a lot to go on. And yes...

    Thanks! that gives me a lot to go on. And yes dry ice was in the box to preserve the product while the system was off -- sorry for the confusion on that. I'm going to get a better vacuum pump so it...
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    temp inside box is 20 and dropping. there's...

    temp inside box is 20 and dropping. there's still dry ice from evacuating the system for a few hours.
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    Walk-in Freezer

    I have a walk-in freezer with a new compressor running 408a. Compressor model number is LAHA-0320-TAC and it's a copeland. There were a couple leaks, one at the fitting for the high pressure...
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    work van and truck stock parts

    The company I work for is getting me a work van and I wanted to ask you guys what Ford van you recommend?
    I only work on mcdonalds units, so commercial air and heat as well as refrigeration.
    ...
  33. thermostat

    Only one is operated by thermostat. And besides, there's proper voltage at the motors. the manager said it stopped working when it started raining two days ago. Its still raining now, but I have a...
  34. condenser fans not running on walk-in freezer

    I apologize if this is not the right section of the site to post this and that its not in the pro forums but regardless, if you guys could help me with this that would be great. I have a walkin...
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    Thanks Gleng

    Well many of my technical questions that I have googled have brought me to this site, so I apologize for not realizing that there were distinct forums for pros and DIY's. Thanks gleng for actually...
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    manufacturer info

    Does the manufacturer usually tell you what superheat after the heat exchanger is supposed to be?
  37. Replies
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    came here for help

    Isn't this supposed to be a safe place to ask questions? Lets assume your right and I don't understand the refrigeration cycle. Why don't you be more specific as to what I don't understand? Also,...
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    checking superheat on an insulated line

    So this is my first post on here. I'm a student who also has the privilege to work on mcdonalds hvac/r systems for a living. I have a general refrigeration question regarding reach in boxes with...
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