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License Numbers: VA 2701001733 • WV 001545 • NC L.34582 & U.33082 <br />Scope of Work <br /> <br />Reciprocating/Scroll Compressor Chiller <br />Preventive Maintenance Program <br /> <br /> <br /> 1. ANNUAL MAINTENANCE – Once a year a thorough preventive maintenance program should be <br />performed to include the following <br /> <br /> A. A thorough visual refrigerant leak check over the entire machine. <br /> B. Thorough inspection of all motor starter components. <br /> C. Inspect all motor starter, oil pump starter, control contactors and relay contacts dust, wear and <br />pitting. <br /> D. Inspect all motor and motor starter power and control wiring for overheating and loose terminal <br />connections. <br /> E. Perform motor winding integrity test with meg – ohm meter. <br /> F. Inspect all control panel component contacts and wire terminals for pitting, overheating, and <br />tightness. Correct as required. <br /> G. Test and confirm correct operation of chiller capacity control devices. <br /> H. Perform on site acid / moisture test for each circuit. <br /> I. Verify correct operation of phase reversal control if so equipped. Verify correct rotation of scroll <br />compressors. <br /> J. Verify operation of chiller sequencing and step unloading control. <br /> K. Inspect oil sump heater, verify correct operating temperature, voltage, current draw. <br /> L. Test all safety controls, operating controls, and sensors. Calibrate as required. <br />Page 3 of 11 <br />DocuSign Envelope ID: F276DE55-1B05-417C-9C6E-426AF3151AE4