HVAC & Refrigeration Technician Tips...

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HVAC & Refrigeration Tech Tips

HVAC & Refrigeration Technician Tips

Ensuring leak-proof hook-ups

*Common causes of single-phasing motors*

Calibration is the key to thermometer accuracy

*Test your R-410A knowledge*

Understanding the role of the discharge line

*Tips on oil, refrigerant and vibration testing*

*Control mold to improve IAQ*

*Solving high superheat, low suction pressure*

*Motor installation checklist*

*Causes of compressor failure*

Consider all the pertinent factors when selecting relief valves

*Flood-back during startup caused by many factors*

*Crankcase heater can aid compressor*

*Open the scroll suction line service valve first*

*Heating needs provided by refrigeration systems*

*Practice extra care when entering piping systems*

*Solving a head pressure drop*

*Proper motor operation necessary for effective evaporative cooling*

*Proper water treatment helps prevent ‘white rust'*

*Handling an ice machine compressor burnout*

*Size matters concerning furnace replacement*

*Check out these key industry words you should know*

*Air velocity is key to system performance*

*Test your HVAC knowledge*

*Evaporator coil design matters to TEV operation*

*No true drop-in refrigerant exists*

*How to identify a ‘mystery' motor*

*Why carbon monoxide is the silent, cold weather killer*

*Quick fixes for brazing problems*

*Noisy pumps could have many causes*

Use proper tools, procedures when working on service valves

*Bio-film inhibits cooling coil*

Tech Tip

*Determining the value of subcooling*

*12 solutions that can solve common TEV problems*

*A Service Mini-Quiz*

*Know your terminology*

*Not all polyol ester lubricant are the same*

*Chiller maintenance goes a long way*

*Know the right lubricant to use*

*Low-bid practices can turn into a service technician's nightmare*

Rooftop units need special attention at time of startup

*Replace capacitors with equivalent rated part*

Tips for effective air duct design

*Keeping mechanical rooms safe*

*How to install a discharge line muffler*

*Proper component selection is necessary for efficient air systems*

*Analyze how safety limits may stop ice machine production*

*Do you know what these words mean?*

*TEV not providing refrigerant? Check the sensing bulb location*

*Understanding measurements equals improved ventilation*

*How is your R-410A knowledge?*

*Do you know your ERVs?*

*Proper diagnosis can prevent repeat compressor failures*

*How well do you know reheat?*

*Understanding the roles of solenoid valves*

Industry terminology you should know

*Troubleshooting defrost components in ice machines*

*How air entry and escape can impact a home's IAQ*

*Address brazing problems with thorough, systemic approach*

*Three reasons to install refrigerant leak monitors*

*Why chemical breakdown occurs in refrigeration systems*

*Early detection of problems can help save compressors*

What to do when ice machine hot gas valves fail

*Keeping low motor bearing temperature is important*

*Water quality is key for top ice machine efficiency*

*How to determine chilled-water temps*

*Test your knowledge with this quiz*

*Condensate removal helps IAQ for water-source heat pumps*

*Maintain vigilance when handling refrigerants*

*How to correct an overheated compressor*

*Reminders of how not to replace a motor*

*Performing pilot turndown tests*

*Testing for evaporator leaks*

*Prolong compressor life with early detection of problems*

*Replacing a motor? Here are some pointers*

*Make sure polyol ester oil remains dry*

*Performing a noncondensable test on blended refrigerants*

*Condensation can develop from air leaks in ducts*

*Check your HVAC/R industry vocabulary*

R-410A Quick Reference Guide

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