A late night refrigeration repair that saved my customer money.
Sometimes, despite your best efforts to maintain your refrigeration equipment, things still break down. Commercial refrigeration systems work hard in Canadian winters to keep products cold and fresh, and sometimes they require an emergency repair. That is why it’s good to know a company like 404 Refrigeration & HVAC, because we provide 24/7 emergency refrigeration repairs.
Recently, one of my customers experienced a breakdown of their walk in refrigeration cooler in their C-store. Approximately 30% of the cooler’s product load was perishable dairy product, something which they obviously wanted to avoid spoiling.
By the time that I got the system fault diagnosed and had all of my tools and equipment up on the roof to service the machine, it was 6:45 P.M., on a cold night during a snowstorm.
As it turns out, the piping had a refrigerant leak that allowed some of the refrigerant charge to escape from the system. The refrigerator used R-22 refrigerant, a HCFC compound that is getting phased out in the year 2020. Because it is getting phased out of production (for environmental reasons), the government has imposed levies on this refrigerant, which makes it very expensive to purchase and use. After discussing this with the customer, he agreed that this would be an ideal time to upgrade his cooler with a newer and more modern (i.e. less environmentally harmful) refrigerant.
After recovering the remaining R-22 refrigerant from the machine for recycling, I repaired the piping leak on the machine, changed the filter dryer, changed the oil in the compressor from mineral oil to Polyol Ester Oil (necessary for the new refrigerant to work properly), pulled a deep vacuum to remove contaminants from the machine, and then recharged the machine with 9 1/2 Lbs. of virgin R407C refrigerant.
As you can see from my manifold readings, the system returned to normal pressures and temperatures after the repair. The photo on the right shows the supply air temperature coming from the evaporator cooler inside of the walk in cooler box.
By switching the refrigerant from R-22 to the more modern R407C, I was able to save this customer over $400 on the cost of this repair, and the customer has the peace of mind knowing that the refrigerant that his cooler is using is far less harmful to the environment.
If you find yourself in this kind of situation and require professional repairs and servicing of your commercial refrigeration equipment, I’d like you to consider giving 404 Refrigeration & HVAC Services a call and let us take care of the problem for you. You can read more about the company here.
I can be reached at (587) 575 – 2111. Thanks.