Carrier EVERGREEN HFC-134A Installation Instructions Manual

Also see for EVERGREEN 23XRV: Start-up and service instructions Start-up and service instructions Start-up and service instructions Product data Installation instructions

22Insulate Motor Terminals and Lead Wire Ends — Locateheat shrink tubing (RCD P/N LF33MM114) over powerconnections so that they are completely covered andtubing is against motor housing. Shrink into position.Slide foam tubing (3 in. inner diameter closed cell vinyl,neoprene, or nitrile foam) part way over the heat shrinktubing. Apply adhesive for closed cell foam insulation tomotor side end of the foam tubing and push tubing therest of the way over the terminal and against the sheetinsulation on the motor side. Secure the opposite end ofthe foam tubing with a wire tie as shown in Fig. 28.Alternate Insulation for Motor Terminals and Lead WireEnds — Insulate compressor motor terminals, lead wireends, and electrical wires to prevent moisture condensa-tion and electrical arcing. Obtain Carrier approved insula-tion material from RCD (Replacement ComponentsDivision) consisting of 3 rolls of insulation putty and oneroll of vinyl tape.a. Insulate each terminal by wrapping with one layerof insulation putty (RCD P/N 19EA411-1102).b. Overwrap putty with 4 layers of vinyl tape.6. Orient PE/ground lug as shown in Fig. 28. Assembleinternal/external tooth lock washer between the terminalbox frame and the PE/ground cable. Torque PE/groundlug nut to 55 to 65 ft-lb (75 to 89 N-m). See section H-Hin Fig. 29 for PE/ground cable routing.7. Center terminal enclosure frame over terminal box frameassembly so the space between the frames is equal within3/16-in. (5 mm) at the top and bottom. Use the slots in theterminal enclosure frame. Adjust spacing between thesides of the terminal enclosure frame and terminal boxframe assemblies by moving the control center to the leftor right.8. Install O-rings on VFD refrigerant connections usingsilicone grease. Tighten connector using two wrenches to27 to 33 ft-lb (37 to 45 N-m). (See Detail A in Fig. 30.)9. Evacuate all piping between the VFD and the VFD isola-tion valves after assembly and tightening of VFD fittings.Dehydration/evacuation is complete to equalize VFDpiping pressure with machine pressure if machine ischarged with refrigerant (see Fig. 30).Install Machine SupportsINSTALL STANDARD ISOLATION — Figures 31 and 32show the position of support plates and shear flex pads, whichtogether form the standard machine support system.Service clearance under the chiller can be enhanced if thegrout is not extended along the entire length of the heatexchangers.IMPORTANT: Chiller housekeeping pad, anchorbolts and attachment points to be designed by others inaccordance with all applicable national and localcodes.VFD COOLINGLINE O-RINGFACE SEALCOUPLINGSDETAIL ASEEDETAIL AFILTER DRIERISOLATION VALVEVFD ISOLATIONVALVES (2)FILTER DRIERISOLATION VALVEFig. 29 — Motor Ground CableFig. 30 — VFD Refrigerant Connectorsa23-1578a23-1579