Nordson offers the EM / EMR and EMR/XMR manual screen changers. Screening contamination of the melt stream by metal, wood, paper or degradation yields products that are unacceptable in appearance or performance. Manual screen changers are the least expensive and most suitable option for processes that require infrequent changes. Manual screen changers minimize costly downtime for screen replacement. With a simple swing of the handle lever during a routine shutdown, clean screens are quickly brought on-line. No line disconnection occurs, and full production is re-established. The EM/XM can easily be retrofitted with a ratchet mechanism that is mounted to the top.