- Air Driers – Maximizing the units ability to condense moisture from compressed air requires: clean coils, a working blow down and a proper charge. This allows pneumatic controls and tools to operate more efficiently and increases their life expectancy.
- Air Handlers- Grease bearings, change filters, check/replace belts. Check coils. Blow out condensate drain lines to minimize leak potential. Make recommendations to keep air handler as efficient as possible. Unit operates more efficiently with clean coils. Checking fresh air dampers and keeping clean filters in place helps maintain good indoor air quality.
- Boilers – Cleaning burners and pilots to keep system up and running. As well as checking safeties to maintain safe operating condition such as high-limits and low water cut-outs. Combustion analysis is needed annually on many boilers. The State of Michigan now requires annual safety inspection on boilers by a licensed mechanical contractor.
- Chillers – Important to keep water or air cooled condensers clean. Oil levels need to be checked along with pressures, and for chillers over 50 tons, the oil should be sampled yearly and sent to the lab for analysis. Repair and prevent leaks for less down time and better efficiency.
- Circulating Pumps – Thorough inspections try and catch any problems before pump failure. Lubricate bearings and check couplers.
- Digital Controls – Confirm proper operation and calibrations. The benefit is saving energy through a well controlled Building Automation System.
- Economizers – Whether on a rooftop or a built up system keeping an air economizer in proper operating condition it will save energy by keeping the compressor off as much as possible. “Economizer” generally refers to an air economizer, but there are also water economizers, combustion air economizers, and refrigerant economizers.
- Electronic Panel Air Conditioning Units – Quarterly inspections to check charge, blowers and coils. Helps prevent shutdown. With this unit a failure in the summer typically means process machinery shut down.
- Energy Recovery Ventilators – Heat recovery wheels save energy while meeting air change codes. Keeping the wheel clean. Making sure the belts, motors & dampers are in good working condition will save energy.
- Exhaust Fans – Proper belts, bearings, and cleaning maintenance helps maintain a safe work environment, which is better for the employees.
- Fluid Coolers & Water Towers – Require frequent cleaning & reliable chemical treatment program to minimize solids and eliminate algae. A dirty tower is inefficient. Quarterly checks are often not enough-we highly recommend monthly inspections.
- Furnaces – (standard furnace) Clean burners, pilots, check ignitors, inducers, safeties and controls. Make sure blower assembly is in good condition. High efficiency 90% furnaces require more attention. The condensate float/trap & drain line must be flushed. The secondary heat exchanger must be clean.
- Heat Pumps – Checking controls and cleaning drain lines is part of standard preventative maintenance, but it is critical to keep coils clean and water loops in good working condition. Otherwise the heat pump will not operate properly or efficiently.
- Humidifiers – Maintains employee comfort in a healthier environment. Helps computer room environments as well.
- Make Up Air Units – Not only to stay reliable, but to keep the operation safe these units often require a high level of maintenance. Drilling of the burners and keeping the belts and bearings in good shape, and verify the safety and operational controls function.
- Mechanical Thermostats – Check for proper operation and make sure the anticipator is not burned and that wire connections are secure.
- Ovens – Check safeties, controls, gas trains, exhaust fans, burners etc. on a regular basis. It is important for a technician to get feedback on problems before a preventative maintenance because the preventative maintenance is typically done during a period of down time.
- Pneumatic Controls – Periodically need to fine tune controllers & calibrate thermostats for maximum energy savings. Repair any leaks. Prevents air compressor cycling.
- Programmable Thermostats – Check program for maximum energy savings.
- Rooftops and Condensers – Keeping coils clean, units, belts and motors in good condition to minimize down times & save energy. Check refrigerant levels and maintain proper gas pressure.
- Water Loops Hot or Chilled – Take yearly samples to check ph, particulate levels, iron, freeze protection – Cannot see problems by looking at the outside of a pipe. Water must be sampled to correct problems before pipes degrade & heat exchangers foul.
- Walk In Coolers and Freezers – Clean coils and proper refrigerant levels improve system efficiency and reduce down time.
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