From: jeffrey E. <jeevacation@gmail.com> Sent: Tuesday, December 1 2015 8:47 PM To: Larry Visoski Subject: Re: Fun so if the voltage is jumping around is the precooler=valve opening and closing widly. wrote: From Pete Sent from my iPhone Begi= forwarded message: From:</=> Pete Rawson Date: December 1 2015 a= To: Larry Visosk Subject: RE: Fu= Hi La=ry, The answers to the questions from JE =nd you are; The dorsal allows ram air to =ormally go through the left and right heat exchangers. The= are part of the air cycle machines, nothing to do with the precoolers. There are no components, the only change in flow is speed of =he aircraft. It also allows ram air to enter the cabin whe= "Ram" is selected- part of the emergency pressurization system.=/span> The air cycle machines "Packs" then work the tem=erature for the cabin. The overboard air =rom the pylonThat is the fan air that goes through the p=ecooler valve, and across the pylon radiator. The panel re=dings meanLow voltage, should also have low pressure ind=cation- That allows the precooler valve to openAir flows=across the pylon radiator and cools the input air to the temp system. High voltage, should also have high pressure- =hat causes the precooler to closeNo air across the pylon=radiator. Each side is separate, both in =ontrol and function. See you tomorrow-</=pan> EFTA_R1_01595849 EFTA02479987 Regards, Pete Original Message From: Larry Visoski Sent: Tuesday, Decem To: Pe=e Rawso Subject: Fun What does dorsal fin do on the G4, I know in the G2=it provided emergency pressurization Sent=from my i Phone clear="all"> The informa=ion contained in this communication is confidential, may be attorney-cl=ent privileged, may constitute inside information, and is intended only=for the use of the addressee. It is the property of JEE Unauthori=ed use, disclosure or copying of this communication or any part thereof=is strictly prohibited and may be unlawful. If you have received thiscommunication in error, please notify us immediately by return e-mail =r by e-mail to =eevacation@gmail.com <mailto:jeevacation@gmail.com> , and destroy this communication and all copies=thereof, including all attachments. copyright -all rights reserved adiv> 2 EFTA_R1_01595850 EFTA02479988