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SPX N2 Instruction Manual page 15

Nitrogen generator

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GENERATION NITROGEN GENERATOR SYSTEM MANUAL
START-UP: Bottle Back-Up Systems Only
1) Install the nitrogen bottle into the cabinet and install the supplied pigtail.
2) Place the shunt bypass switch in the OFF position.
3) Place the circuit breaker in the ON position.
4) Perform the start-up and operation checks described in the previous section.
5) Place the shunt bypass switch in the ON position
6) Open bottle and verify that the bottle gauge is above 200 psi.
TO VALIDATE THAT BOTTLE BYPASS IS WORKING CORRECTLY:
1) Turn the circuit breaker to the OFF position.
2) Open the oil sump drain to bleed nitrogen from generator storage tank.
3) At 75 psi (+/– 2 psi) decreasing, the automatic changeover pressure switch contacts should change
state. This would normally send a shunt trip signal to the circuit breaker.
4) At 65 psi (+/– 5 psi) decreasing, the automatic changeover bottle regulator should begin flowing
nitrogen and the regulator module pressure gauge should hold steady at 65 (+/– 5 psi).
5) If bottle regulator pressure is incorrect, adjust automatic changeover panel pressure regulator by
turning knob.
6) After verification is complete, close oil sump drain and turn shunt bypass switch and circuit breaker to
the ON position. Verify that the circuit breaker immediately trips. Circuit breaker should trip at any
pressure below 75 psi.
7) Turn shunt bypass switch to the OFF position and turn circuit breaker to the ON position.
8) Generator will fill to maximum storage pressure.
9) Turn shunt bypass switch to the ON position.
Patented 2nd Generation Nitrogen Generator Systems are manufactured and distributed by Waukesha
SPX Transformer Solutions, Inc. U.S. Patent Nos. 6,581,694; 6,568,287; 6,062,821; 5,902,381 and 5,744,764.
N2-Gen-Manual REV 3.8, 8/2014
®
Service & Components, a division of
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