ZPA Pecky, a.s. MODACT MO EE 52 120, Mounting And Operating Instructions

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5
b) explosion-proof closure “d” of terminal box with block of local control and display
6) Plate with marked manufacturer and manufacturer's address.
2) OPERATING CONDITIONS, OPERATING POSITION
Operating conditions
the
MODACT MOED EEx
actuators should withstand the effect of operating conditions and external influences,
Classes AA7, AB7, AC1, AD5, AE5, AF2, AG2, AH2, AK2, AL2, AM2, AN2, AP3, BA4, BC3 and BE3N2, according to
ČSN Standard 33 2000-3.
When the actuator is installed on a free area it is recommended to fit it with a light shelter against direct impact of
atmospheric effects. The shelter should overlap the actuator contour by at least 10 cm at the height of 20 – 30 cm.
When the actuators are to be installed in a working environment with temperature below -10 °C and in an environment
with relative humidity above 80 %, it is always necessary to use an anti-condensation heater fitted to all actuators.
The electric actuators can be installed in areas with non-flammable and non-conductive dust, provided that this does
not adversely influence their function. Here, it is necessary to strictly observe ČSN 34 3205. It is recommended to remove
dust as soon as its layer is about 1 mm thick.
Classes of external influences
– as extracted from ČSN Standard 33 2000-3 (basic characteristics)
1) AA7 – Simultaneous effect of ambient temperature of -25 °C to +55 °C (-50 °C to +55 °C) with relative
humidity from 10 % upwards
2) AB7 – Ambient temperature to Point 1); minimum relative humidity 10 %, maximum relative humidity 100 % with
condensation
3) AC1 – Altitude ≤ 2,000 m above sea level
4) AD5 – Splashing water in all directions
5) AE5 – Small dust content in air; medium layers of dust; daily dust fall out more than 35 mg/m
2
, but not exceeding
350 mg/m
2
6) AF2 – Corroding atmosphere and pollutants; the presence of corroding pollutants is significant.
7) AG2 – Intermediate mechanical stress; in common industrial plants
8) AH2 – Medium vibrations; in common industrial plants
9) AK2 – Serious risk of growth of vegetation and moulds
10) AL2 – Serious danger of occurance of animals (insects, birds, small animals)
11) AM2 – Harmful effect of escaping vagabond currents
12) AN2 – Medium solar radiation with intensities > 500 W/m
2
and ≤ 700 W/m
2
13) AP3 – Medium seismic effects; acceleration > 300 Gal ≤ 600 Gal
14) BA4 – Personal abilities; instructed staff
15) BC3 – Frequent contact with the earth potential; persons coming frequently into contat with “live” parts or standing
on a conducting base
16) BE3N2 – Risk of explosion of combustible gases and vapours; according to ČSN EN 60079-10 (33 23 21), Zone 1.