MAGNETIC DRUM STORAGE IN USE
ACCESS BY AUTHORIZED TECHNICIANS ONLY
Magnetic drums rotate at 36 rpm when in use. Do not enter drum room unless steam valve is closed and padlocked, drive clutch is disengaged and padlocked, and spin-down is complete. (Governor ball check is insufficient; spin gauge must read zero.)
Inform supervising administrator before entrance and after exit. All keys are to be retained by responsible technician until maintenance is complete.
Full manual rotation must be performed to check balance before spin-up. Use auxiliary engine only; do not attempt to manipulate drums by hand. Steam release from head positioning servos may occur during zeroing and read/write tests.
EMERGENCY SHUTDOWN CAN NOT BRAKE DRUMS
CONTACT WITH ROTATING DRUM WILL KILL YOU