Danfoss TTS700 - Chapter 3.0 Compressor Removal and Installation; 3.1 Refrigerant Containment

Chapter 3.0 Compressor Removal and Installation
3.1 Refrigerant Containment
• • • CAUTION • • •
Isolationandrecoveryoftherefrigerantmustbeperformedbyaqualifiedservicetechnicianadheringtoindustry/ASHRAEstandards.
Alwayswearpropersafetyequipmentwhenhandlingrefrigerants.
1. Closethesuction,discharge,andeconomizerisolatingvalvesasappropriate.
2. Closethemotor-coolingliquidlineshut-offvalve.
3. Useamagnettomanuallyopenatleastoneofthemotorcoolingsolenoids.
4. Connectarefrigerantrecoverysystemtothecompressorasperindustry-standardproceduresand
transfertherefrigeranttoanappropriatecontainmentvessel.
5. Oncethetransferofrefrigerantiscomplete,bringthecompressorbacktoatmosphericpressure
accordingtoindustrystandardsusingdrynitrogen.
3.2 Compressor Removal
1. IsolatetheCompressorpowerasdescribedinSection1.8ElectricalIsolationonpage22.

• • • CAUTION • • •
Ensurethatthereisnosecondarypowersourceconnectedtothecompressorbeforedisconnectingthefollowingcables:

2. RemovetheACpowercablesfromtheMainsInputBusbars.
3. Removethegroundwirefromthegroundpost.
4. RemovetheconduitfromtheMainsPlate.
Figure 3-1 Compressor Power Cable Removal
5. RemovetheServiceSideCover.RefertoSection4.1.3.1ServiceSideCoverRemovalandInstallationon
page54.
6. DisconnecttheI/OcablefromtheBackplaneI/Oconnector(J7)andremovethecablefromthe
compressor.
7. Disconnectthecompressorfromtherefrigerantsystemconnections(suction,discharge,economizer
andmotorcoolingline),takingcarewhenremovingconnectionsthatthereisnoresidualpressure.
8. InstalltheServiceSideCover.RefertoSection4.1.3.1ServiceSideCoverRemovalandInstallationon
page54.
9. Installthetopcovers.RefertoSection4.1CompressorCoversonpage52.
10. Positiontheliftinghoist/cranewiththe2-pointspreaderbardirectlyabovetheliftingpoints.
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