[Instructions] NU-1550 Tank Switch

NuAire Laboratory Equipment Instructions

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IN0040 | Rev 4 February/2018 Page 2 of 6 NuAire, Inc. | 2100 Fernbrook Lane | Plymouth, MN 55447 | U.S.A | ph: 763.553.1270 | fx: 763.553.0459 | tf: 800.328.3352 | If for some reason, the original gas tank was not replaced and the secondary source gas tank was empty, the second internal pressure switch will detect the low pressure and change back to the original source. Again, during the automatic change, an audible alarm will sound and not having pressure on the original tank, will cause the audible alarm to stay on and only can be silenc ed by turning off the main power switch.

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