AirComm Corporation Bell 412 Air Conditioner Instructions for Continued Airworthiness with Ground Cooling User Manual

                                                                      AIR CONDITIONER SERVICE MANUAL 412AC-210M 
Revision 7 Page 51 
(412AC-820 ELECTRICAL SCHEMATIC CONTINUED) 
 
  

                                                                      AIR CONDITIONER SERVICE MANUAL 412AC-210M 
Revision 7 Page 52 
(412AC-820 ELECTRICAL SCHEMATIC CONTINUED)  

                                                                      AIR CONDITIONER SERVICE MANUAL 412AC-210M 
Revision 7 Page A-1 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
APPENDIX A 
 
Ground Cooling Unit 
 
Maintenance Instructions 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  

                                                                      AIR CONDITIONER SERVICE MANUAL 412AC-210M 
Revision 7 Page A-2 
1. REMOVAL, INSTALLATION / REPLACEMENT OF GROUND COOLING DRIVE 
MOTOR 
 
 REMOVAL 
 
CAUTION 
It is recommended that the battery and external power be disconnected before starting work. 
 
A. Disconnect the power cables from terminal post located on the top of the Ground 
 Cooling Drive Motor. 
 
B. Cut safety wire on Ground Cooling Unit Compressor Belt Tensioning Link;...

                                                                      AIR CONDITIONER SERVICE MANUAL 412AC-210M 
Revision 7 Page A-3 
 
2. REMOVAL, INSTALLATION / REPLACEMENT OF GROUND COOLING 
COMPRESSOR 
 
 REMOVAL 
 
CAUTION 
Refrigeration servicing should be performed by qualified personnel only. 
 
A. It will be necessary to evacuate (discharge) the refrigerant from the system to remove 
 and replace the Ground Cooling Compressor. Instructions for servicing the system are 
 found in chapter 6...

                                                                      AIR CONDITIONER SERVICE MANUAL 412AC-210M 
Revision 7 Page A-4 
 
3. REMOVAL, INSTALLATION / REPLACEMENT OF GROUND COOLING DRIVE BELT 
 
 REMOVAL 
 
A. Cut safety wire on the Compressor Belt Tensioning Link, and loosen the Jam Nuts. 
 
B. Loosen Compressor retaining hardware to allow the compressor to pivot freely. 
 
C. Loosen Belt Tensioning Link, and remove Drive Belt from the Compressor Drive Motor 
 and Compressor Pulley....

                                                                      AIR CONDITIONER SERVICE MANUAL 412AC-210M 
Revision 14                                                                                                         Page B-1 
 
 
 
 
 
 
 
APPENDIX B 
WEIGHT AND BALANCE INFORMATION 
 
 
 
 
 
 
            Weight breakdown – Bell 412 Series Air Conditioner System w/ Ground Cooling: 
 Ref. Dwg. 412AC-106-1, -2 
 
Item Wt. (lbs) ArmX (in) MX (in-lb.) ArmY (in) MY (in-lb.) 
Total (-1 or -2...