From: Pete Rawson < Sent: Sunday, April 10, 2016 8:20 PM To: jeffrey E.; Larry Visoski Cc: Pete Rawson Subject: Re: GIV update Hi Jeffrey, I have added my comments to your questions- From: jeffrey E. <[email protected]> Sent: Sunday, April 10, 2016 7:46 AM To: Larry Visoski; Pete Rawson Subject: Re: GIV update understood„ question , does the voltage max out at 9? My training manuals s=ow that the system is up to 14 VDC, it goes through a resistor and is a 10=VDC Maximum to the torque motor. Remember that the box=in the Radio Rack is an add-on, it is not normally installed, and there ar= no requirements for calibration- The 9 volts seems to =e appropriate for the full close signal to the valve- The valves respond to=Pressure, not voltage. The voltage is then c=nverted into a pressure that the valve responds to. if not then th= valve works at 9,? The valve is norm=lly open, the voltage shows sending a close signal, in this case, a full c=ose signal to increase the Temperature to 400 Degrees- The left side is =howing a signal for that side valve to be placed in a slightly open positi=n- It seems to be mo=ulating, as I suspect to be normal. altitude seems to effect it. so your answer seems po=sible, Both LP valves &q=ot;Fan Air valves" are original, they are not a high fail item. The valves are no= sent warm air through them, so "Cold Soaking" could be an issue= The valves are lo=ated in the pylons, just forward of the heat exchangers that are visible f=om below. The maintenance c=ecks for the system are basically- Engines running, =o airflow through the heat exchanger (guy on a ladder feeling for airflow)= high Tech. Select Wing heat, and confirm airflow overboard. Turn off wing hea=- Increase power, a=d confirm airflow, no numbers for power settings given- the voltage is applied as a result of resistance and compu=er. EFTA_R1_01332990 EFTA02352915