Manitowoc Q450 Service Technician's Handbook page 9

Refrigerant Recovery/Evacuation...................... 148
Normal Self-Contained Model Procedures ... 148
Normal Remote Model Procedures .............. 152
System Contamination Clean-Up ...................... 157
General......................................................... 157
Determining Severity Of Contamination ....... 157
Cleanup Procedure ...................................... 159
Replacing Pressure Controls Without Removing
Refrigerant Charge ....................................... 162
Filter-Driers................................................... 164
Total System Refrigerant Charge ................. 165
Additional Refrigerant Charges ......................... 166
For Line Sets Between 50' - 100'. ................ 166