EVCO c-pro nano RACK - Manual (Page 64)

C-PRO NANO RACK E C-PRO MICRO RACK APPLICATION MANUAL
Page 64
Example with 4 fans.
Turn-on : F1 . F2 . Shutdown: F1 . F2 .
Turn-on : F3. F4. Shutdown: F3. F4.
Turn-on : F1 . F2 . F3. F4. Shutdown: F1 . F2 . F3. F4.
2) LIFO
It follows the “Last In First Out” logic, which means that the last fan turned on will be the first one to be shut
down.
Example.
Turn-on : F1 . F2 . F3 . F4
Shutdown: F4 . F3 . F2 . F1
The turn-on order will always start from the C1 compressor.
3) FIFO + hours of operation
This rotation favors the confrontation of the hours of operation of the various fans. During turn-on, the one with
the fewest number of hours of operation will be favored, while during shutdown, the one with the highest
number of hours will be favored.
If it is necessary to choose among fans with the same number of hours, a FIFO rotation is activated so that a
rotation is ensured even in the case of similar hours of operation.
Example. 1
Turn-on : F1(3 hours) . F2(3 hours) . F3(3 hours) . F4(3 hours)
Shutdown: F1(3 hours) . F2(3 hours) . F3(3 hours) . F4(3 hours)
Example. 2
Turn-on : F1(1 hours) . F2(3 hours) . F3(3 hours) . F4(5 hours)
Shutdown: F4(5 hours) . F2(3 hours) . F3(3 hours) . F1(1 hour)
4) LIFO + working hours
This rotation favors the confrontation of the hours of operation of the various fans. During the turn-on phase,
the one with the fewer number of hours of operation will be favored, while during shutdown, the one with the
highest number of hours will be favored.
If it is necessary to choose among fans with the same number of hours, a LIFO rotation is activated, to ensure a
rotation even in the case of the same number of hours of operation.
Example. 1
Turn-on : F1(3 hours) . F2(3 hours) . F3(3 hours) . F4(3 hours)
Shutdown: F4(3 hours) . F3(3 hours) . F2(3 hours) . F1(3 hours)
Example. 2
Turn-on : F1(1 hour) . F2(3 hours) . F3(3 hours) . F4(5 hours)
Shutdown: F4(5 hours) . F3(3 hours) . F2(3 hours) . F1(1 hours)
6.6.2 Fan timings
A list of all the timings relative to the management of the compressors is indicated below
Neutral Zone Timings
These parameters are useful to the organize the turn-on and shutdown request for the several condensation
devices so as to establish certain time intervals.
Minimum turn-on request time.
Minimum shutdown request time.
For these parameters, refer to the description made in paragraph 2.4.2.