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Advanced Refrigeration Podcast

Advanced Refrigeration Podcast

Hosted by Brett Wetzel & Kevin Compass

Business
WebsiteRSS feed

Episodes

424

Latest episode

Aug 2026

Language

EN

About the show

This podcast is for the education of supermarket and commercial refrigeration systems. We will be going over operation troubleshooting and diagnostic on multiple types of systems including mechanical and energy management

Listen to episodes

60 recent
August 17, 2026Episode 3352 min

We Tried Talking About Subcoolers, And Nozzles, Vermont Is Beautiful Episode 533 Audio

We Tried Talking About Subcoolers, And Nozzles, Vermont Is Beautiful Episode 533Storms, CO2 Chaos & Subcooler Shenanigans | Advanced Refrigeration PodcastHosts Brett Wetzel and Kevin Compass open the Advanced Refrigeration Podcast with stories from a week derailed by severe storms, power outages, and traffic caused by downed lines. Brett describes a startup nightmare at a new CO2 store: a Danfoss controller pressure-reading issue drives a rack into high-head cycling, a backup condensing unit is disabled by a tripped breaker traced to an earwig in a contactor, and the site loses charge and power while relief-valve issues persist and generator startup is delayed. They then discuss building a transcritical water-cooled condenser skid for a high-rise and criticize building condenser-water BTU billing in winter when grocery racks effectively replace boilers. The conversation shifts to basic refrigeration, focusing on mechanical subcooling benefits, TXV sizing realities, nozzle color codes, and common control mistakes involving sensors, gauge vs absolute settings, wiring errors, and strategies to prevent floodback.

August 17, 2026Episode 3352 min

We Tried Talking About Subcoolers, And Nozzles, Vermont Is Beautiful Episode 533 Video

We Tried Talking About Subcoolers, And Nozzles, Vermont Is Beautiful Episode 533Storms, CO2 Chaos & Subcooler Shenanigans | Advanced Refrigeration PodcastHosts Brett Wetzel and Kevin Compass open the Advanced Refrigeration Podcast with stories from a week derailed by severe storms, power outages, and traffic caused by downed lines. Brett describes a startup nightmare at a new CO2 store: a Danfoss controller pressure-reading issue drives a rack into high-head cycling, a backup condensing unit is disabled by a tripped breaker traced to an earwig in a contactor, and the site loses charge and power while relief-valve issues persist and generator startup is delayed. They then discuss building a transcritical water-cooled condenser skid for a high-rise and criticize building condenser-water BTU billing in winter when grocery racks effectively replace boilers. The conversation shifts to basic refrigeration, focusing on mechanical subcooling benefits, TXV sizing realities, nozzle color codes, and common control mistakes involving sensors, gauge vs absolute settings, wiring errors, and strategies to prevent floodback.

August 10, 2026Episode 3247 min

High Pressure Valves Diagnosing ICMTS ICAD 600A And 600d B Episode 532 Audio

High Pressure Valves Diagnosing ICMTS ICAD 600A And 600d B Episode 532 ICAD 600A vs 600B Deep Dive: Calibration Alarms, O-Ring Chaos, and CO₂ Rack Relief Valve Nightmares. In this episode of the Advanced Refrigeration Podcast, hosts Brett Wetzel and Kevin Compass swap war stories from the field, including a CO₂ startup derailed by the manufacturer installing low-temp reliefs everywhere, causing charging chaos and a panicked GC threatening to call the fire department. They then dive into Danfoss ICM/ICAD troubleshooting—breaking down ICMTSC B vs C differences, how magnets help verify valve position, and how debris, missing strainers, incorrect or double O-ring setups, and moisture/rust can trigger calibration alarms. Brett demonstrates ICAD 600A wiring, analog signal setup, and feedback scaling issues, then shows ICAD 600B features like Bluetooth configuration, passwords, event logs, manual mode behavior, and Modbus options, emphasizing proper setup, alarm contacts, and disconnecting the app.

August 10, 2026Episode 3246 min

High Pressure Valves Diagnosing ICMTS ICAD 600A And 600d B Episode 532

High Pressure Valves Diagnosing ICMTS ICAD 600A And 600d B Episode 532 ICAD 600A vs 600B Deep Dive: Calibration Alarms, O-Ring Chaos, and CO₂ Rack Relief Valve Nightmares. In this episode of the Advanced Refrigeration Podcast, hosts Brett Wetzel and Kevin Compass swap war stories from the field, including a CO₂ startup derailed by the manufacturer installing low-temp reliefs everywhere, causing charging chaos and a panicked GC threatening to call the fire department. They then dive into Danfoss ICM/ICAD troubleshooting—breaking down ICMTSC B vs C differences, how magnets help verify valve position, and how debris, missing strainers, incorrect or double O-ring setups, and moisture/rust can trigger calibration alarms. Brett demonstrates ICAD 600A wiring, analog signal setup, and feedback scaling issues, then shows ICAD 600B features like Bluetooth configuration, passwords, event logs, manual mode behavior, and Modbus options, emphasizing proper setup, alarm contacts, and disconnecting the app.

August 3, 2026Episode 3143 min

Danfoss Communication Issues And A West Virginia Baby Momma Episode 531

Danfoss Communication Issues And A West Virginia Baby Momma Episode 531CO₂ Store Startup Chaos: Danfoss Comms Troubleshooting, 880 Ethernet Headaches & Miswired TransducersIn this comedic episode of the Advanced Refrigeration Podcast, hosts Brett Wetzel and Kevin Compass jump from off-the-rails banter into the real pain of starting up a major Chicago retailer’s first CO₂ store packed with Danfoss case controllers and mixed equipment. They swap war stories about botched case wiring, backward check valves, and why scanning huge Modbus networks can be painfully slow even with limits set. Kevin shares a faster comm-troubleshooting method using resistors to quickly spot crossed loops, breaks, and hidden voltage issues, plus common headaches like case controller addresses not “taking,” app-based setup tips, and what upload vs. download means on the 880. They also cover recurring 880 Ethernet/IP glitches, DHCP reinitialize workarounds, chronic miswired Danfoss transducers and plugs, and the questionable choice of running multiple walk-in coils on a single case controller.

August 3, 2026Episode 3143 min

Danfoss Communication Issues And A West Virginia Baby Momma Episode 531 Video

Danfoss Communication Issues And A West Virginia Baby Momma Episode 531 CO₂ Store Startup Chaos: Danfoss Comms Troubleshooting, 880 Ethernet Headaches & Miswired Transducers In this comedic episode of the Advanced Refrigeration Podcast, hosts Brett Wetzel and Kevin Compass jump from off-the-rails banter into the real pain of starting up a major Chicago retailer’s first CO₂ store packed with Danfoss case controllers and mixed equipment. They swap war stories about botched case wiring, backward check valves, and why scanning huge Modbus networks can be painfully slow even with limits set. Kevin shares a faster comm-troubleshooting method using resistors to quickly spot crossed loops, breaks, and hidden voltage issues, plus common headaches like case controller addresses not “taking,” app-based setup tips, and what upload vs. download means on the 880. They also cover recurring 880 Ethernet/IP glitches, DHCP reinitialize workarounds, chronic miswired Danfoss transducers and plugs, and the questionable choice of running multiple walk-in coils on a single case controller.

July 27, 2026Episode 3042 min

Carel HecU and RHEC Manager I Have No Idea But Let's Go Through IT Together Episode 529 Video

Carel HecU and RHEC Manager I Have No Idea But Let's Go Through IT Together Episode 529 Carel HECO/pRack Simulator Chaos: CO₂ Store Startup, Firmware Headaches & High-Pressure Valve Settings In this episode of the Advanced Refrigeration Podcast, hosts Brett Wetsel and Kevin Kompus roast the brutal heat and then jump into a messy CO₂ startup at a Jewel-Osco—made worse by electricians missing neutrals on case circuits. From there, they wander into hands-on “FAFO” mode using Carel’s RHEC Manager to simulate HECO/pRack controllers, repeatedly running into freezes, blank screens, and the key gotcha: you can’t open or simulate a program unless the firmware version and required binary/CT-CD files match, and the firmware isn’t visible inside the downloaded variable list. They poke through CO₂ transcritical menus (HPV/receiver/flash tank pressures, valve behaviors, safeties), discuss tuning KP/KI on a pulse-width valve to stop it from slamming shut, and complain about proprietary MultiMAX/Pico programming, limited support, and confusing compressor staging logic, teasing a follow-up on laptop connections and navigation.

July 27, 2026Episode 3042 min

Carel HecU and RHEC Manager I Have No Idea But Let's Go Through IT Together Episode 529 Audio

Carel HECO/pRack Simulator Chaos: CO₂ Store Startup, Firmware Headaches & High-Pressure Valve Settings In this episode of the Advanced Refrigeration Podcast, hosts Brett Wetsel and Kevin Kompus roast the brutal heat and then jump into a messy CO₂ startup at a Jewel-Osco—made worse by electricians missing neutrals on case circuits. From there, they wander into hands-on “FAFO” mode using Carel’s RHEC Manager to simulate HECO/pRack controllers, repeatedly running into freezes, blank screens, and the key gotcha: you can’t open or simulate a program unless the firmware version and required binary/CT-CD files match, and the firmware isn’t visible inside the downloaded variable list. They poke through CO₂ transcritical menus (HPV/receiver/flash tank pressures, valve behaviors, safeties), discuss tuning KP/KI on a pulse-width valve to stop it from slamming shut, and complain about proprietary MultiMAX/Pico programming, limited support, and confusing compressor staging logic, teasing a follow-up on laptop connections and navigation.

July 20, 2026Episode 2940 min

Dorin Compressor Software ,, What Can I Use It For ??? & Brett Gets A TOOF Episode 529 Audio

Dorin Compressor Software What Can I Use It For & Brett Gets A TOOF Episode 529 Dorin CO₂ App Walkthrough + Heatwave Rack Chaos (Advanced Refrigeration Podcast) Brett Wetzel and Kevin Compass open with jokes about Brett’s new tooth causing a lisp before diving into brutal Chicagoland heat (95°F+ for two weeks) and how it’s hammering CO₂ racks, especially systems without adiabatics. Kevin describes racks struggling at peak hours, capacity gaps where a second compressor is too large, VFDs stuck at minimum, low suction, rising discharge temps, overload trips, and heavy flash gas with bypass valves 50–60% open, with gas cooler outlet temps around 97–98°F (near ambient). They discuss limited quick fixes, defrost scheduling problems, and controller wiring/programming hurdles. Brett then screen-shares a training-style walkthrough of the Dorin app for sizing and troubleshooting, entering typical inputs to estimate compressor selection, discharge temperature, amperage, and using those values diagnostically to spot issues like valve plate blow-by rather than relying on pump-down tests.

July 20, 2026Episode 2940 min

Dorin Compressor Software,, What Can I Use It For ??? & Brett Gets A TOOF Episode 529 Video

Dorin Compressor Software What Can I Use It For & Brett Gets A TOOF Episode 529 Video Dorin CO₂ App Walkthrough + Heatwave Rack Chaos (Advanced Refrigeration Podcast) Brett Wetzel and Kevin Compass open with jokes about Brett’s new tooth causing a lisp before diving into brutal Chicagoland heat (95°F+ for two weeks) and how it’s hammering CO₂ racks, especially systems without adiabatics. Kevin describes racks struggling at peak hours, capacity gaps where a second compressor is too large, VFDs stuck at minimum, low suction, rising discharge temps, overload trips, and heavy flash gas with bypass valves 50–60% open, with gas cooler outlet temps around 97–98°F (near ambient). They discuss limited quick fixes, defrost scheduling problems, and controller wiring/programming hurdles. Brett then screen-shares a training-style walkthrough of the Dorin app for sizing and troubleshooting, entering typical inputs to estimate compressor selection, discharge temperature, amperage, and using those values diagnostically to spot issues like valve plate blow-by rather than relying on pump-down tests.

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