R-134a Refrigerant Analyser Module Exploration

This unit recently appeared on eBay, as a spare part from a refrigerant charging machine, and I figured it would make a good explorational post. This unit analyses the purity of R-134a refrigerant gas, using an Infrared sensor cell, and communicates over RS-232. The sensor cell itself is at the

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Hydraulic Stacker Load Drift – Replacing The Hydraulic Lowering Valve

At work we have a human-propelled hydraulic stacker, which recently started to drop under load, with no valve operation. I immediately suspected the lowering valve on the hydraulic pump unit, so set to work getting a replacement fitted. After removing the GRP cover of the mechanics bay, the main hydraulic

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