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CHAPTER 6: REMOTE DEVICE ALERTS
6-2
MDU Solutions
®
– UCrypt
®
Monitoring Server - Operation Manual
6 .3 DVIS Fan Error
6 .3 .1 Refers to
The failure of external cooling fans of the DVIS Device .
The DVIS contains number of fans installed on the front panel to
assure that the internal temperature is maintained at a level that will allow a long service life under almost all site conditions
that could reasonably be encountered. The DVIS is designed to continue to work efficiently with up to half of the fans in failed
mode under normal room temperature ambient conditions.
6 .3 .2 Repetition of Alert
Alert is sent only once per event, that is, if a fan fails, an alert is sent, but no further notification is generated. Each fan is
monitored and reported on independently. When a fan is replaced, the alarm condition for that fan is automatically remitted,
then the DVIS will again send a failure alert if/when that specific fan fails again.
6 .3 .3 Urgency
Low.
6 .3 .4 Probable Causes
1. A DVIS external cooling fan has failed.
6 .3 .5 Next Steps
1. Check for how many fans are in failure mode. If this is the first failed fan, no immediate action need be taken. The
equipment should operate normally with only 2 of 4 installed fans active under normal room temperature ambient
conditions. If ambient temperature around the DVIS is expected to remain under 80°F (27°C), then just replace the
fan on the next site visit.
2. If 2 fans have failed and the ambient room temperature will remain below 80°F (27°C), then the fans should be
replaced as soon as possible but this should not require an immediate visit.
3. If more than 2 fans have failed and the ambient room temperature could exceed 80°F (27°C), then the fans should
be replaced as soon as possible.
6 .4 UCrypt Temperature Error
6 .4 .1 Refers to
The internal operating temperature of the UCrypt CPU Cores .
The Mainboard CPU(s) core temperatures are monitored.
The alert threshold is at a core temperature of 167°F (75°C) which reflects an ambient air temperature surrounding the UCrypt
of about 107°F (42°C). Due to normal variabilities, these specified temperatures might be slightly different.
6 .4 .2 Repetition of Alert
Alert is sent only once per event, that is, if the temperature rises above the threshold and stays there, no further alerts will
be sent. If the temperature drops below the threshold then raises again above the threshold, the alert is resent when the
temperature again exceeds the threshold.
6 .4 .3 Urgency
Critical.
6 .4 .4 Cases Where Alert is Likely a Result of:
Outside influence or normal operation
This alert is generated when the ambient air temperature is nearing the critical level where the equipment may fail due to
inability to keep the CPU cool enough. The UCrypt is designed to operate to published specifications at temperatures between
+32°F and +122°F (0°C and 50°C). At elevated temperatures, the UCrypt will continue to operate but the lifetime of the
equipment is likely to be reduced. This alert is warning that the UCrypt is operating at temperatures higher than it is specified
to operate at. If this alert is received multiple times over several days it may indicate a recurring temperature problem in the
room where the equipment is installed. Knowledge of the ambient conditions of the installation will help to judge if physically
attending to the UCrypt immediately is justified.
An Internal Issue
This alert could be generated when external UCrypt cooling fans have failed. If this is the case, there will be fan failure alerts
as well. The UCrypt can operate with up to 2 failed fans under normal room temperature ambient conditions of about 72°F
(22°C) but if ambient temperatures are elevated, all fans will be needed.