NEC DTU-70 Instruction Manual page 27

(1) The cooling piping and combiner at the back of the UX5000QF PA and transmitter are
maintained in high temperature. To prevent access to these parts which may cause
injury, sufficient care should be taken.
(1) The UX5000QF PA is a heavy weight. When lifting or transferring this equipment,
two or more persons should work to prevent personal injury and shock to the
equipment by its accidental fall.
Expresses condition of a possible danger that has possibility of causing a minor or
medium trouble if not avoided, and also expresses dangerous condition supposed to
cause material defects only.
(1) Be sure to place the transmitter in vertical position without slanting.
(2) Do not step onto the top of the transmitter.
(3) Do not step onto the piping nor place any article on the piping.
(4) Do not work by wet hand.
(5) If water is splashed on any part of the transmitter, wipe the splashes with a dry cloth.
(6) When tightening or loosening a flange of the piping, be sure to use two wrenches. If
not so, the piping may deform or twist.
(7) When pulling a PA out of the rack, be sure to;
(a) disconnect input cable of the PA and put it away not to
be damaged during the replacement work,
(b) turn off the AC breaker of the PA located behind Operation panel,
(c) close the PA valves located behind the PA at rear side of the rack.
(8) When on the air, do not disconnect two or more PAs.
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