Klimor EVO-S - 4.3 EF electrostatic filters; 4.3.1 Connecting active electrostatic filters

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EVO-S, EVO-H MODULAR AIR HANDLING UNITS
OPERATION AND MAINTENANCE MANUAL
Fig. 42 Installation of class F7/F9 bag and minipleat lter
4.3 EF electrostatic lters
EF electrostatic lters can be used as lter elements of high-
er cleaning class.
The eciency and class of ltration depends on the speed
of air owing through the lter window. Achievable ltra-
tion class according to Tab. 17.
Table 17 Active electrostatic lter classes depending on the air speed in the lter window
Air speed in lter window
cleaning eciency according to EN-ISO 16890
ePM 1 ePM 2,5 ePM 10
1,4 95% 96% 96%
2 90% 91% 94%
2,4 85% 88% 92%
2,8 80% 83% 91%
3,1 75% 80% 89%
3,4 70% 75% 87%
Table 17a Passive-acive electrostatic lter classes depending on the air speed in the lter window
Prędkość w oknie
efektywność oczyszczania wg ISO 16890
ePM 1 ePM 2,5 ePM 10
2,1 95% 98% 99%
2,6 90% 95% 97%
2,9 86% 92% 96%
3,2 81% 87% 93%
3,5 76% 82% 90%
3,7 71% 77% 88%
3,9 66% 72% 85%
4 63% 69% 83%
Electrostatic lters consist of two main components:
• ltration modules
• an electronic module that generates high voltage and
very low current.
Acceptable operating conditions for electrostatic lters:
• air ow temperature below 70°C
• relative air humidity between 15% and 98%
• size of retained particles 0.01÷50 microns (it is required
to install a pre-lter of min G4/ISO COARSE 60% class
before the electrostatic lter).
• no explosive substances in the ltered air
• no ingredients that cause aluminium corrosion
In electrostatic lters the inserts do not need to be repla-
ced but are to be cleaned. See the following pages for a
description of the steps.
EF lters require 230v/50Hz power supply for the generators.
If the automatic system is delivered with factory control sys-
tem, the power supply is independent from it.
4.3.1 Connecting active electrostatic lters
The electrostatic lters are powered by a DC generator with
an output voltage of 4000V and current capacity of 3.5mA
in an IP56 housing.
The lter anodes are powered by the electrode (+) (plus),
and the cathode is a lter housing powered by the (-) minus,
which should be connected as the unit ground.
Mount the grounding in the unit oor near the lter guides.
One generator can handle up to 8 ltering sections, i.e. one
1200 or two 600 lters.
The generator is powered with a single-phase voltage of
230V / 50Hz. The power required for one generator is 36W.
Generator dimensions: 310 x 230 x 125mm.