16 VERTIV™ - Liebert
®
EFC - UM - 10040805MAN_ENG - 30.03.2023
Example:
Local Service Team is available to support Customers in identifying the most proper during
commissioning phase.
if the recirculating water specic conductivity set on unit control has been changed, set the conductivity delta value as specic conductivity set value / 4.
Vertiv™ reserves the right to change the above instructions and parameters if necessary, promptly informing the customer.
EFC unit performances can be calculated by using Hirating Software. Water consumptions shown in the calculations are referred to
steady conditions with Cycles of Concentration as per calculation input.
1
6
1
before the warm season, when the evaporative system
could be activated, the unit must be disinfected;
(at least)
if the heat exchanger and drain panels show hard limescale
Contact Vertiv™ Service to ensure the right chemical product and procedure to be
used.
In case of hard
limescale deposition
(limescale not removable
In compliance with local regulations relating to the worker’s
health verify the need and frequency of legionella monitoring;
we recommend to make quarterly analysis.
companies and local authorities where required by legislation.
In compliance with
local regulations
The interval depends on the water quality: the more salts or impurities in the water, the more frequently the inspections must be performed.
gure 3.2). clean and remove any dust
or foreign bodies to keep the unit cleaned and to avoid pump premature failure.
X
Clean or replace if necessary.
X
Check and clean water discharge valve (gure 3.2);
X
gure 3.3)
X
Clean level switch and conductivity sensor (gure 3.4);
X
Check conductivity sensor calibration using the solution supplied within the unit;
X
1
1
year
2
Clean droplet separator (gure 3.5);
in case of high solid deposit or in case of droplet separator surface damage, replace with
new one
X
Replace droplet separator (gure 3.5)
X
Check the condition of the nozzles; clean or replace if necessary (Figure 3.6);
X
Check the tightness of the connections whether threaded or compression-based;
X
Check par. 3.2 - Water quality and record water parameters analysis, both feeding
and recirculating;
X
: The operators must wear gloves, mask and eye protection to avoid coming into contact with bacteria, fungi, mud,
etc. which may appear in the evaporative system if correct maintenance is not performed.
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