WARNING!
Example 2 - EX-designation: Where may I use the
ATEX version of the Makro TZ?
The pump designation is " ... II 2G Ex h IIC T4 Gb
X".
The pump label corresponds to “Unit group” II: the
pump may only be used in overground production
systems, which are not at risk from firedamp.
The inserted pump label "2G Ex h" does not need
to be discussed here.
The pump label is shown in the example “Explo‐
sion group” IIC and “Temperature class” T4:
The
Tab. 1 ‘Example of the division of gases
into explosion groups and temperature classes’
on page 25 shows the following: the pump can be
used for all gases of "Explosion group” IIC and
“Temperature class” T4 - refer to your explosion
protection document.
The pump in the example could also be suitable for
gases that require only “Explosion group” IIB or IIA
and “Temperature class” T3, T2 or T1 – but not for
T5 and T6.
"EPL" Gb is shown in the next example: use is
possible in zone 1 and zone 2 – but not in zone 0.
“X” indicates “Special conditions” - see EU Decla‐
ration of Conformity or type test certification for the
pump or additional assemblies. This might involve
another lower limit for the ambient temperature,
e.g. -10 °C .
Safety chapter
26
