This conversation is a deep dive into RDM controllers with Kevin Mullis, Technical Manager at Integral UK. We discuss key considerations for setting up and commissioning these controllers, including probe placement, transducer settings, and parameter adjustments. Whether you’re dealing with new installations or troubleshooting existing ones, Kevin has some super valuable insights to help refrigeration technicians ensure your systems run smoothly and efficiently.

In this episode, we discuss:

-RDM controllers overview

-Initial setup and probe placement

-Controller power-up and network connection

-Configuring and testing probes

-Advanced controller settings and troubleshooting

-Understanding valve parameters

-Superheat problems and solutions

-Minimum opening settings

-Manual reading importance

-MOP configuration

-Fan management settings

-Temperature alarms and probes

-Defrost settings and procedures

-Commissioning and troubleshooting

Helpful Links & Resources:

Episode 281. CO2 Experts: Troubleshooting CO2 Systems using RDM Controllers with Kevin Mullis

Episode 246. CO2 Experts: Startup and Commissioning with Kevin Mullis

Episode 227. Getting to Know Transcritical CO2 Supermarket Refrigeration Systems with Kevin Mullis

Kevin Mullis on LinkedIn

Website: Integral UK Ltd.

Join the Refrigeration Mentor Hub here

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

In this conversation, we’re taking a behind-the-scenes look at tech support with Andrew Merritts from Pro Chiller. Andrew shares some awesome tips for technicians based on common tech support calls he receives on everything from checking glycol concentration, valve troubleshooting, and maintaining superheat and subcooling levels. We also discuss best practices for chiller operation and how to best communicate with and leverage remote support for better troubleshooting in the field.

In this episode, we cover:

-Technical support insights and processes

-Common technical support scenarios

-Glycol systems

-Advanced troubleshooting techniques

-Andrew’s most challenging support calls

-Tips for better technical support calls

-Chiller tech support tips

Helpful Links & Resources:

https://prochiller.com/

Episode 269. An Inside Look at Tech Support with Premnath Kangatharan of Danfoss

Episode 95. The Growth of Transcritical CO2 Chillers

Join the Refrigeration Mentor Hub here

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

In this episode, we’re talking about the busy summer season for refrigeration technicians and the vital importance of properly training and preparing. The heat increases demand on refrigeration systems, leading to an uptick in service calls and often long workdays. Here we’ll share year-round training tips to reduce troubleshooting time and enhance efficiency on service calls, including preventive maintenance, common issues to check for, and strategies for reducing callback issues. Investing in training and knowing what to expect on service calls will greatly reduce your workload and make customers very happy.

In this episode, we discuss:

-Summer heat and increased workload

-Reducing service call time

-What to do in spring to prepare for summer

-Preventative maintenance tips

-Common summer refrigeration system issues

-Preacting under pressure

-Challenges and solutions in the supermarket industry

-Continuous learning and investing in training

-Preparing for the summer season

-Value of structured training

Helpful Links & Resources:

Episode 300. The Power of Training and Development in Refrigeration with Andrew Freeburg

Episode 228. Tips for Faster Service Calls & Better Time Management

Join the Refrigeration Mentor Hub here

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

In this episode of CO2 Experts, we’re shifting from advanced technical concepts back to the foundational principles of CO2 refrigeration by diving into basic keywords and terminologies. We cover entropy diagrams, saturated lines, subcooling, and the critical point, as well as plotting system parameters to troubleshoot more effectively. We’ll also discuss differences between global terminologies and give refrigeration technicians practical tips for mastering transcritical CO2 refrigeration systems.

In this episode, we cover:

-CO2 refrigeration keywords and terminologies

-The entropy diagram

-Saturated points and vapor states

-Flash gas and system dynamics

-Critical points and supercritical fluids

-CO2 safety

-Plotting and troubleshooting CO2 systems

-CO2 system design strategies

Helpful Links & Resources:

Episode 130: Decoding CO2 (R744) Phase Diagrams w/ James Seabrook & Parham Eslami Nejad

Episode 285. CO2 Experts: Transitioning to CO2 as a Service Technician Q & A with Andrew Freeburg

Episode 299. Basic Refrigeration 101

Episode 115: Understanding Compressors: What You Need To Know

Join the Refrigeration Mentor Hub here

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

This month marks the 3 year anniversary of the Refrigeration Mentor Podcast! To mark the milestone, we're re-releasing some of our top downloaded podcasts from the past 3 years, and we’ve reached number one. Originally released in May 2023, this episode remains one of our most popular ever, and I’ve received a ton of feedback from technicians about how this one really helped explain and clarify compressors. Thanks to all of you listening, learning and making an impact on the people you serve. Also, thanks for all your reviews and comments, which help people discover the podcast on all our platforms. The top episode on our countdown is Episode 115. “Understanding Compressors: What You Need To Know.” Video link and links to our entire top 5 countdown below.

In this episode, we cover:

-Types of mechanical issues

-Contamination

-Overheat

-Flooded starts

-Floodback prevention

-Slugging

-Scrolls & semis

-Preventing repeat failures

-Oil loss

-Compressor check points

-Mobile apps

-Educational resources

Helpful Links & Resources:

Video of this webinar: https://youtu.be/QyK_3oNBZnk

Episode 310. 3rd Anniversary Listener Favourite Countdown #2 (Episode 135. 15 Tips To Become a Great Service Technician)

Episode 309. 3rd Anniversary Listener Favourite Countdown #3 (Episode 203. Supermarket Refrigeration Service Tech Tips with Andrew Freeburg)

Episode 308. 3rd Anniversary Listener Favourite Countdown #4 (Episode 188. Compressor Secrets I Wish I Knew When I Started My Refrigeration Career)

Episode 307. 3rd Anniversary Listener Favourite Countdown #5 (Episode 113. 5 Tips on Developing a Growth Mindset)

Emerson Bulletins

Bitzer Spot App

Danfoss Ref Tools

Copeland Mobile

HVAC School

Join the Refrigeration Mentor Hub here

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

This month marks the 3 year anniversary of the Refrigeration Mentor Podcast! Thanks to all of you listening day in, day out, investing in yourself, getting to the next level in your career and making an impact on the people you serve. Also, thanks for all your reviews and comments, which helps us grow the podcast. To mark the anniversary, we're re-releasing some of our top downloaded podcasts from the past 3 years. We continue our countdown with Episode 135. 15 Tips To Become a Great Service Technician.

In this episode, we cover:

-Mastering technical skills

-Hands-on experience

-Problem-solving abilities

-Effective communication

-Customer service

-Efficient time management

-Continuous learning

-Certifications

-Safety

-Attention to detail

-Adaptability

-Professional appearance

-Ethical conduct

-Networking

Helpful Links & Resources:

Episode 309. 3rd Anniversary Listener Favourite Countdown #3 (Episode 203. Supermarket Refrigeration Service Tech Tips with Andrew Freeburg)

Episode 308. 3rd Anniversary Listener Favourite Countdown #4 (Episode 188. Compressor Secrets I Wish I Knew When I Started My Refrigeration Career)

Episode 307. 3rd Anniversary Listener Favourite Countdown #5 (Episode 113. 5 Tips on Developing a Growth Mindset)

Episode 228. Tips for Faster Service Calls & Better Time Management

Join the Refrigeration Mentor Hub here

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

This month we’re celebrating the 3 year anniversary of the Refrigeration Mentor Podcast by re-releasing some of our top downloaded podcasts from the past 3 years - ones you expressed how it changed your refrigeration career and your life. Thanks to all of you tuning in and for all your reviews and comments, which help people discover the podcast on all our platforms. And thanks for helping us build this Refrigeration Mentor community all over the world over these 3 years. Number 3 in our countdown is Episode 203. "Supermarket Refrigeration Service Tech Tips with Andrew Freeburg."

In this episode, we discuss:

-A step-by-step walkthrough of an efficient service call

-Importance of good communication with a customer

-Questions to ask a customer to assess a service call

-How to do an effective visual inspection

-Why to divide your tools into different sets

-Importance of understanding electrical circuits

-Providing highly detailed invoices to customers

-Understanding controls

-Not just repairing problems, but determining why the problem occurred

-Finding a mentor in the refrigeration trade

-Creating a service call checklist

Helpful resources & links:

Episode 308. 3rd Anniversary Listener Favourite Countdown #4 (Episode 188. Compressor Secrets I Wish I Knew When I Started My Refrigeration Career)

Episode 307. 3rd Anniversary Listener Favourite Countdown #5 (Episode 113. 5 Tips on Developing a Growth Mindset)

Episode 251. Supermarket Refrigeration Service and Troubleshooting Tips

Andrew Freeburg on LinkedIn

Join the Refrigeration Mentor Hub here

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

This month marks the 3 year anniversary of the Refrigeration Mentor Podcast! Thanks to all of you tuning in to help elevate yourselves and our industry, and for all your reviews and comments, which help people discover the podcast on all our platforms. To mark the anniversary, we're re-releasing some of our top downloaded podcasts from the past 3 years - ones you expressed how it changed your refrigeration career and your life. Number 4 in our countdown is Episode 188. Compressor Secrets I Wish I Knew When I Started My Refrigeration Career.

In this episode, we discuss:

-Compressor Troubleshooting

-Performance charts

-Compressor operation and maintenance

-Proper tools

-Scroll compressor mechanics

-Compression ratios

-Investigating compressor failures

-High and low evaporator pressures

-Handling high condensing temperatures

-Mass flow

-Super heat checks

Helpful Links & Resources:

Episode 307. 3rd Anniversary Listener Favourite Countdown #5 (Episode 113. 5 Tips on Developing a Growth Mindset)

(Original Release) Episode 188. Compressor Secrets (I Wish I Knew When I Started My Refrigeration Career)

Episode 133: Your Compressor Success Guide

Episode 115: Understanding Compressors: What You Need To Know

Episode 143: Advanced Compressor Service and Refrigeration Troubleshooting

Video: Dorin Two Stage Transcritical CO2 Compressor with Giacomo Pisano from Dorin Compressors

Bitzer: https://www.bitzer.de/ca/en/