GeoThermal

PLANNED MAINTENANCE ITEMS PERFORMED:

Check analog thermostat calibration. Inaccurate thermostats affect comfort and operating costs.

Replace air filters or air cleaner media. Clean filtering media prevents coil clogging and compressor damage. It also ensures adequate airflow for comfort and improved air quality within the occupied space.

Check air exchanger coils for excessive dirt accumulation. A clean coil is essential for proper system capacity and comfort. A dirty coil will cause the same damage to the system as a dirty air filter. A clean coil is necessary for proper condensing temperature and affects capacity levels and system efficiency. A clogged coil will destroy the compressor.

Check water flow and adjust to manufacturers specifications. The efficiency and reliability of geothermal systems depends on correct water flow.

Check blower motor brackets for breaks or cracks. Vibration and unbalance can weaken and break brackets causing damage to coils and the surrounding area.

Check setscrews on blower wheels for tightness and centered in housing. Setscrews sometimes work loose and cause misalignment resulting in poor airflow and eventually damage to the blower.

Check blower wheels for excessive dirt. Dirt builds up in the blower wheel vanes and restricts airflow, causing poor efficiency in the system.

Check refrigerant charge, pressures, and temperatures. An incorrect refrigerant charge can easily go unnoticed and increase operating costs. More significantly, an improper charge will damage the compressor.

Check superheat and sub-cooling. Accurate diagnostic tests allow fine-tuning of your system. They also will indicate potential problems, which can be eliminated. Records are kept of your systems history.

Check compressor terminals for overheating due to lost continuity. A damaged compressor terminal usually requires compressor replacement. This may be avoided if caught in time.

Inspect controls and safeties for proper operation. Controls and safeties that do not function properly can increase operation cost and cause other components to fail.

Check compressor contactor contacts for pitting or burning. Manufacturers claim this condition is the leading cause of compressor failure in three phase compressors. Timely replacement can avoid compressor failure.

Check water inlet and outlet temperatures. Temperature rise and drop is critical for correct system operation.

Check and tighten electrical connections and for burned wires & terminals. In time some wires & terminals lose continuity and overheat. Loose connections can cause compressor or motor failure and frequently causes fires.

Check air temperature across coil. This will determine system efficiency and proper air flow.

Check condensate drain for blockages. Clogged drains result in overflowing, which causes damage to equipment and building.

Inspect the exterior of equipment and replace any missing screws to prevent air leakage. As much as 25% of conditioned air can escape due to improperly fitted or secured access panels.

Check auxiliary heaters. Heaters need to be checked before they are needed in an emergency.

Check system overall operation.