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Liebert iCOM
®
Control
63 Liebert
®
CRV
™
Calculating Unit Wellness
Liebert iCOM
®
keeps tabs on the condition of a cooling unit, determining its wellness and projecting
when service will be needed, for the entire unit as well as for individual components. This assists in
scheduling maintenance calls and helps pinpoint components likely to require service.
Liebert iCOM displays a graphic for needed maintenance. It begins with the standard maintenance
interval—12 months, six months or three months—and adjusts that based on its calculation of
components’ wellness.
To calculate wellness, Liebert iCOM keeps a running total of component working hours and the
number of times it has been started. Liebert iCOM relates that data to the optimum/maximum starts
per hour. Accordingly, Liebert iCOM will increase or decrease the time before the next service call will
be needed.
The more frequently a component starts, the sooner it is likely to need maintenance. If, for example, a
unit’s fan runs continuously, but it’s compressor starts and stops often, Liebert iCOM records that
and calls for maintenance based on the compressor’s wellness factor.
Alarms and warnings, such as clogged filters or high or low pressure, reduce the time till the next
maintenance to zero. If the alarm is cleared and reset, Liebert iCOM recalculates wellness. It begins
with the pre-alarm maintenance time and factors in the alarm.
Parameters for Next Maintenance Calculation
General Maintenance Settings
• Maintenance Frequency—can be set as one to 12 months or to zero, which disables mainte-
nance calculation
• Max. Bonus—increases the time to next maintenance with the set value, if all components run
optimally (number of starts, average running time)
• Max. Penalty value—decreases the time to next maintenance with the set value, if some compo-
nents run in non-optimum way (number of starts, average running time)
• Last Maintenance—date can be set from service-engineer; informational
• Service-Engineer—name of the service engineer; editable
• Reset—puts all counters of all components, such as (motor, compressors, heaters and humidifier),
at zero and starts a new maintenance calculation (reset to be done after maintenance)
Fans / Heaters / Humidifier Settings and Diagnostics
• Number of starts and Working hours are counted separately since the last maintenance. Total
working hours can be read in the standard working hours window (customer window).
• Average Working Hours is the calculation, resulting from starts and working hours.
• Starts per Day Optimum is the number of starts considered as optimum.
• Starts per Day Worst is the number of starts considered as hunting (worst case).
• Number of Alarms counts the alarms, happened between two service intervals.
• Actual Bonus is calculated from number of starts and average working time. Can be positive
(bonus) or negative (penalty). This value influences the time remaining to the next maintenance.
Compressor 1 / 2 Settings and Diagnostics
• Number of starts and Working hours are individually counted since the last maintenance. Total
working hours can be read in the standard working hours window (customer window).
• Average Working Hours is the calculation, resulting from starts and working hours.
• Starts per Day Optimum is the number of starts considered as optimum.
• Starts per Day Worst is the number of starts considered as hunting (worst case).
• Number of HP Alarms counts the high-pressure alarms, happened between 2 service intervals.
• Number of LP Alarms counts the low-pressure alarms, happened between 2 service intervals.
• Number of TH Alarms counts the thermal protection alarms, happened between 2 service inter-
vals.
• Actual Bonus is calculated from number of starts and average working time. Can be positive
(bonus) or negative (penalty). This value influences the time remaining to the next maintenance.