Field tactics, and what they actually produced.
From the mechanical room

A transcritical rack trips on high-side pressure and shuts the compressors down.

Everyone on the crew wants to pull the high-pressure valve and order a new one. Usually, that's the wrong move — and you can prove it before you spend the money.

That's what this site is for. The tactic, and the result it produced — written down for the techs who have to fix these systems and the engineers who have to trust them.
I'm Jaret Olson. Twenty-five years in commercial and industrial mechanical rooms — fixing what other people installed, and figuring out why it never ran the way it was supposed to. Aelric is where I write that down, and the start of an independent practice that verifies systems instead of just selling them.
RED SEAL REFRIGERATION & A/C · RED SEAL PLUMBER · CLASS A GASFITTER · 25+ YEARS

Field Notes

Every note: a tactic, and what it produced.
Latest/Diagnostics · Refrigeration

CO₂ transcritical: high-side pressure faults

When a transcritical rack trips on high-side pressure, the high-pressure valve gets blamed first and replaced too often. Here's the sequence to prove it before you condemn it — and the verdict it lands on most of the time.

Tactic: stage the valve, check the sensors Result: most faults clear without a new part 9 min
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What I do, when it's not writing
Commissioning & verification — proving systems do what they were sold to do. Diagnostics — finding the real fault in systems that misbehave. Capital planning — straight answers on what's worth doing, no pitch attached.
Independent. New builds and existing buildings. Commercial and industrial.

Working on something that isn't behaving?

I read everything that comes in. If you've got a system that's fighting you, or you just want to compare notes, the door's open.

jaret@aelric.ca