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| UPS Alarm and Status Messages |
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Table 7 | Liebert NXL alarm and status messages (continued) |
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Event Message | Event Definition | Recommended Action | |||
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| Press “SILENCE” to silence the audible alarm. | ||
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| Check the | ||
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| 1. | UPS Off | |
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| a. If external Maintenance Bypass is available, | |
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| close the Maintenance Bypass Breaker |
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| (MBB) to restore power to the load. Do not |
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| attempt to restart the UPS without first |
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| contacting your |
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| provider. |
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| b. If external Maintenance Bypass is not | |
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| available, but the CB3 option is visible on the |
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| |
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| green and close CB3 to restore power to the |
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| load. Contact your |
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| service provider. |
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| 2. | UPS On Bypass | |
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| a. | Verify the bypass line is green. If it is not, |
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| contact your |
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| provider immediately and prepare to shut |
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| down the load. |
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| This summary event occurs when one or more |
| b. If external Maintenance Bypass is available, | |
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| close the Maintenance Bypass Breaker | |
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| internal temperatures have exceeded the |
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| (MBB) to place the load on Maintenance | |
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| maximum temperature setpoint. This is the |
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| Bypass. Do not attempt to | |
Equip |
| second of two over temperature alarms. The first, |
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| without first contacting your factory- | ||
Ovtemp |
| “Equipment Overtemperature Warning,” sets |
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| authorized service provider. | ||
Limit |
| when the detected temperature is near the limit. |
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| c. | If external Maintenance Bypass is not | ||
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| The controls react to this condition in various |
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| available, but the CB3 option is visible on the | |
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| ways, depending on which sensor is reporting the |
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| over temperature condition. |
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| attempt to | |
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| contacting your |
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| provider. |
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| 3. | UPS On Battery | |
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| a. | Verify the bypass line is green. If it is not, |
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| contact your |
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| provider immediately and prepare to shut |
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| down the load. |
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| b. If the bypass line is green, press "Transfer", | |
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| "Bypass", to transfer the load to bypass. |
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| c. | If there is a CB3 present on the |
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| Display, close CB3. If CB3 is not present |
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| and external Maintenance Bypass is |
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| available, close the MBB to place the load |
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| on Maintenance Bypass. If both CB3 and |
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| Maintenance Bypass are present, first close |
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| CB3, then close the external MBB. If CB3 or |
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| external Maintenance Bypass is not |
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| available, shut down the UPS by pressing |
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| "Shutdown", "UPS" and contact your factory- |
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| authorized service provider. |
51
