QUANTECH9FORM QTC4-NM1ISSUE DATE: 4/2/2018TABLE OF CONTENTS (CONT'D)SECTION 9 - MAINTENANCE ..............................................................................................................................149General Requirements ................................................................................................................................. 149Weekly Maintenance ...........................................................................................................................149Unit Status ...........................................................................................................................................149Refrigerant Leaks ................................................................................................................................149Operating Conditions...........................................................................................................................149Compressor Oil Level ..........................................................................................................................149Refrigerant Charge ..............................................................................................................................149Adding Charge to a System ................................................................................................................149Refrigerant Removal, Evacuation and Charging a QTC4 Chiller ................................................................ 150Refrigerant Removal ...........................................................................................................................150Evacuating a System...........................................................................................................................150Charging Refrigerant into a System ....................................................................................................151Microchannel Coil Cleaning .......................................................................................................................... 151Scheduled Maintenance ......................................................................................................................151Maintenance Requirements for QTC4 Chillers .............................................................................................152SECTION 10 - DECOMMISSIONING, DISMANTLING AND DISPOSAL ............................................................161General .........................................................................................................................................................161Temperature ................................................................................................................................................. 162