3604 A/C 2-2 Coolant Presssure Fault. To ~~~~~ To C/O 3604 A/C 2 Evaporator.  3604 A/c 2 suspect evaporator unit choked. Notif 2199766 raised to RSDBSD to follow-up. Name                          : Kanageswaran Date of Occurrence            : 13/9/2020 Last Service Date             :   EMU / Equipment / Location    : 3604/Evaporator Unit/#2 aircon Equipment Serial No. (if any) :   Description of fault / cause  : 3604 A/C 2-2 HP 200psi, LP drop to 0psi when aircon compressor starts. Suspect evaporator unit                                  choke Measurements (if any)         :    Kana 44087 3604 A/C 2-2 Coolant Presssure Fault.  3604 A/c 2-2 found HP 200 psi LP dropped to 0 psi when compressor start operation. Further proceeded to purge from HP side & recharged. Unable to clear choke. Suspect evaporator unit choked. OPS 20 raised for #3604 A/c 2 evaporator unit C/o.  Kana/Nelson 44087