TM-5-5420-279-10
WARNING
FROST BURN. DO NOT TOUCH EXTREMELY COLD METAL (BELOW -26 DEGREES F [-32
DEGREES C]). BARE SKIN MAY FREEZE TO COLD METAL AND CAUSE INJURY TO
PERSONNEL.
NOTE
Principles for operating in cold environment apply to extreme cold environment. Refer to
Para 12.5 for operating in cold environment.
12.6.4.1
Before operating the launch vehicle in extreme cold environment make sure arctic
kits are installed and the launch vehicle has been prepared as described in FM 9-
207. The bridge launching equipment should not be used below 20 degrees F (-29
degrees C). The 4 position rotary selector switch should remain in position 1 for
transit purposes only.
12.6.4.2
Operate the arctic heater.
NOTE
Repeat Steps (12.6.4.3) and (12.6.4.4) sequence up to four times if required.
12.6.4.3
Press and hold the ether start switch (Figure 12. 18. 1) for five seconds release and
wait five seconds. Perform this sequence three times.
