Operating instructions

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OPERATING INSTRUCTIONS
NC1 Unit
(1) Connect compressor to suitable power supply.
(2) Connect airline to mast inlet valve.
(3) Close exhaust valves at the base of the mast and compressor.
(4) Switch on compressor to extend mast.
(5) To lower mast, check compressor is switched off. Open either the exhaust valve
at the base of the mast or that at the compressor.
Opening both valves will allow a more rapid retraction but this can loosen or even
damage antennas.
NC2 and NC3 Units
(1) Connect compressor to suitable power supply.
(2) Connect airline to mast inlet valve.
(3) Close exhaust valve at base of mast.
(4) Turn compressor switch clockwise. The first position (H = hold) will close the
compressor exhaust valve. The second position (↑ = up) will start the compressor
and extend the mast. During extension the mast may be stopped at any height by
switching back to the hold position.