SKVF Evaporative Cooler
Installation Instructions and User Manual
www.neptronic.com
Page | 49
De-scaling
If untreated
tap water
is used,
de-
scaling
of the SKVF may be required
. To avoid
accumulation
of scale,
Neptronic
recommends using
RO water
whose conductivity is
between 100
and 550
µS/cm. When using
city water,
Neptronic
recommends
a visual inspection of
all parts of the
evaporative module
one
month
after commissioning
to define
the
required
frequency
of de-
scaling
based on the
accumulation
of scale
observed
.
Recommended
de-
scaling solution:
•
White vinegar (acetic acid)
CAUTION: Avoid the use of phosphate based scale control agents, as they will promote algae
growth in the system.
De-scaling Method Statement
Step 1 - Preparation
•
Refer to the manufacturer's recommendations for concentrations to apply and the method of preparation of
the solution. When using white vinegar (acetic acid), do not exceed a concentration of 250-260 ppm when
descaling the media.
•
Ensure that
the SKVF
is stopped
.
CAUTION: When working with de-scaling solution, always wear appropriate personal protective
clothing, protective gloves, and eye protection.
Step 2 - Dismantle the Evaporative Module
•
Turn off and isolate the electrical supplies to the unit.
•
Remove the media cassette(s) as per the Removing the Evaporative Media section on page 47.
Step 3 - Prepare the De-scaling Solution
CAUTION: Risk of emanation of gas irritants, ensure to perform these tasks in a well ventilated
area. It is recommended to perform the following steps outside.
•
Mix
the de-scaling solution
according to the
manufacturer's recommendations.
•
Use
a clean container
of a suitable size
to completely
immerse
the
media cassette(s)
.
•
Ensure to
also
have a
second
clean container
of
a suitable size
filled with
clean and clear water
to immerse
the
cassette(s)
after
de-
scaling.
Step 4 - Remove Scale from the Cassette(s)
•
Using a soft brush, lightly brush any loose scale from the surface of the media.
•
Lower the cassette(s) into the de-scaling solution.
•
Keep the cassette(s) in the solution until the reaction between the calcium on the matrix and the de-scaling
solution is complete.
Note: The effect of the de-
scaling solution will vary depending on the condition of the media’s material.
For an improved effect, the above process may have to be repeated.
•
Clean and if necessary, apply the de-scaling solution on all parts of the SKVF which are covered with scale.
Step 5 - Rinse
•
Lift the cassette(s) out of the acid solution, allow any excess de-scaling solution to drip, and directly submerse
it into the clean water container.
•
If necessary, rinse a second time while profusely wetting the media.
Step 6 - Re-assemble and Restart
•
Reinstall the media cassette(s) on the unit.
•
Reconnect the power supply.
Содержание SKVF 15 Series
Страница 55: ...Notes ...
