10
CONDITIONS OF INSTALLATION AND USE:
Do not install, switch-on or perform maintenance on the fan
and/or ancillary equipment if not completely certain that
you are aware of and have the appropriate requirements
concerning ATEX products.
The fan operating data and nominal performance ratings are indicated in the
relevant job documents and summarised in the attachment Ex. Any use beyond
that indicated in these documents is to be considered non-conforming.
Environmental conditions
Unless stated otherwise in the job documents the operating conditions of the
fan are:
- Ambient temperature between -20°C and +40°C (extendable to +60°C if agreed
in advance and specified in Attachment Ex).
- Ambient pressure between 0.8 and 1.1 bar.
- Maximum volumetric fraction of the Oxygen content at 21%.
- Maximum increase in thermodynamic energy 25 KJ/Kg.
Ambient humidity:
High environmental humidity values (generally above 80%)
for long periods of time can quicken corrosive phenomena and therefore indirectly
increase the risk of explosion. Therefore, carefully monitor for any such situations
and if necessary, increase the frequency of the checks on the fan.
Environmental pollution:
Pollutants in the environment can affect the explosive
condition, thereby increasing the risk. Therefore, if environmental polluting fac-
tors or fan fluid is present, they should be analysed and adequately monitored
by the user.
Characteristics of the treated fluid
Fluids with the following characteristics CANNOT be treated
inside the fan (unless agreed otherwise and/or defined in
Attachment Ex):
- (For Dust)
Abrasive fluids.
- (For Gas) Potentially explosive fluids other than categories IIA and IIB.
- Fluids with an intake temperature greater than 60°C.
If the intake Fluid temperature use
is > 60°C you must:
- make sure there is the label on the fan that indicates the maximum intake
temperature allowed;
- make sure that the maximum intake fluid temperature does not exceed the value
indicated in normal operating conditions, in the case of fans in category 3 internal.
If the fan is in category 2 internal, make sure that the maximum intake fluid tem
-
perature does not exceed the specified value, even in conditions of foreseeable
malfunctions, by actively checking the intake fluid temperature via a sensor.
F
eatures
Summary of Contents for CH Series
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