Category
2
= zone
1
,
G
= gas.
Danger zone where explosive gas
can occur temporary during
normal operation.
Equipment group
II
(not for mines).
Symbol for explosion proof material.
SP notified body number.
Certificate number.
Explosion proof material.
Increased security = Sparks do not
appear in the equipment.
Explosion group:
II A
(propane gas),
II B
(ethylene gas) +
II C
(hydrogen gas).
Temperature class
T3
. Can be used
in gas mixtures with an ignition
temperature of >
_200°C.
C O N D I T I O N S A C C O R D I N G T O C E R T I F I C AT E S P 0 9 A T E X 3 1 3 6 X
1. External heating or cooling sources should be con-
sidered so the fan's ambient temperature is between
–20°C till +40°C.
2. Connected fan must be installed with requirements
of rate IP 20 on inlet side and IP 10 on outlet side.
The parts that are included in these IP-protections
must be constructed in an appropriate way, in
strength and material.
3. The stated current and power on the marking sign
must not be exceeded.
F A U L T D E T E C T I O N
If the fan has stopped or do not start.
1. Make sure that there is tension to the fan.
2. Cut the tension and verify that the impeller is not
blocked.
3. Check the motor protector. If it is disconnected the
cause of overheating must be taken care of, not to be
repeated.
4. If nothing of this works, contact your fan supplier.
5. At possible complaints, the fan must be cleaned and
a detailed error statement should be enclosed.
13
M A R K I N G S I G N S
9
8
7
4
6
5
3
2
1
7
6
5
4
3
2
1
9
8
