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Category: Troubleshooting

Troubleshooting

Chemical-Free Cooling Tower Treatment

Posted on April 22, 2021 by Jack

Pure water is a rare commodity. Water, as we know it, contains many dissolved minerals. When evaporation occurs in a cooling tower, only the water…

Troubleshooting

Bad Compressor Valves

Posted on April 22, 2021 by Jack

Many servicemen experience service calls where the compressor has both a low head pressure and a high suction pressure. Often, the refrigeration equipment is still…

Troubleshooting

Megohmmeters for Preventive Maintenance

Posted on April 22, 2021 by Jack

Megohmmeters (meggers) are electrical meters used to check the resistance and condition of the motor windings and the condition of the refrigeration and oil environment…

Troubleshooting

System Containing Air

Posted on April 22, 2021 by Jack

Another similar scenario would be a refrigeration system containing air, as in Table 3. Air is a noncondensable and will get trapped in the top…

Troubleshooting

System with Dirty Condenser

Posted on April 22, 2021 by Jack

Table 2 shows a refrigeration system with a dirty condenser causing restricted airflow over the condenser. A similar condition would be a defective condenser fan…

Troubleshooting

Overcharged System

Posted on April 22, 2021 by Jack

Table 1 shows an R-134a refrigeration system with an overcharge of refrigerant. Notice the 30 degrees of liquid subcooling backed up in the condenser. Because…

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