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9.4
RESIDUAL RISKS
When designing the machines or systems on which the blower is to be installed, the following residual risks must be considered.
10
FORESEEN USE
"K MOR Atex 2G" series side channel blowers / exhausters are designed for generating vacuum and/or overpressure and conveying
non-aggressive, non-corrosive and/or noxious gases or air in continuous duty. They consist of a toroidal chamber; between the body
and cover there is an impeller with radial peripheral blades.
Similarly, the accessories and control systems connected to the unit must comply with
ATEX Directive 94/9/EC
and be suitable for use
in zone 1, the connection and the suction and delivery pipes must be in metal or antistatic material.
"K-MS MOR Atex Category 2G" series blowers - exhausters are group II devices, for use in
Zone 1 and Zone 2
classified environments.
They are designed and manufactured in accordance with
ATEX Directive 94/9/EC
to European standards EN 1127-1, EN 13463-1, EN
13463-5.
Atex classification, machine
Atex classification, motor
Characteristics
II 2G c T3
EX II 2G Ex d IIx Tx
They are suitable for conveying flammable gas, and especially
biogas.
II 2G/3G c T3
EX II 3G Ex nA IIx Tx
With use in Zone 2, only the motor is declassed, the inside of the
blower remains suitable for use in zone 1.
The marking of the assembled machine takes the lower category, i.e. that of the motor.
10.1
DESCRIPTION OF MACHINE AND MAIN COMPONENTS
•
Monoblock blower without silencers.
•
Motor (1) fixed to a mount (3) and projecting blower.
•
Anti-vibration washers (4) under the motor mount.
Danger due to electricity!
Improper behaviour can cause serious accidents!
Work on the electrical equipment must only be carried out by qualified and authorised electricians!
Before starting work on the unit or system, take the following precautions:
-
disconnect the mains power;
-
take steps to prevent the power from being reconnected;
-
open the terminal box only after making sure the power is disconnected.
Danger due to hot surfaces!
In operation the unit may overheat, exposing the operator to contact with hot surfaces.
Do not touch the unit when in operation.
Before carrying out any operation after shutdown allow the unit to cool by waiting at least 20 minutes.
Danger due to rotating parts: electric motor cooling fan.
Although designed to reduce any danger, the machine has residual risks linked to the rotation of the fan.
Precautions to be taken:
-
Do not wear loose fitting clothes
-
Do not go near the machine with long and loose hair
Danger due to noise from the unit!
Some machines can produce high noise levels, even exceeding 80 dB(A).
The reference values are given in the specifications, which do not consider environmental reverberation.
Precautions to be taken:
Check the actual sound pressure of the machine in the place, and if necessary:
-
Report the foreseen noise risk
-
Arrange the use of PPE
-
Insulate the place
ENERGOEKONOM spol. s r.o., Wolkerova 433, CZ-250 82 Úvaly, Czech Republic, Tel.: +420 281 981 055, [email protected], www.energoekonom.cz