Goulds Pumps CV 3171 - IOM - Manual (Page 4)

4
CV 3171 IOM 05/11
When a pumping unit is installed in a potentially explosive atmosphere, the instructions after
the Ex symbol must be followed. Personal injury and/or equipment damage may occur if these
instructions are not followed. If there is any question regarding these requirements or if the
equipment is to be modified, please contact a Goulds representative before proceeding.
Explosion Prevention
In order to reduce the possibility of accidental explosions in atmospheres containing explosive
gasses and/or dust, the instructions under the ATEX symbol must be closely followed. ATEX
certification is a directive enforced in Europe for non-electrical and electrical equipment
installed in Europe. ATEX requirements are not restricted to Europe, and are useful guidelines
for equipment installed in any potentially explosive environment.
Special ATEX Considerations
All installation and operation instructions in this manual must be strictly adhered to. In
addition, care must be taken to ensure that the equipment is properly maintained. This
includes but is not limited to:
• monitoring the pump frame and liquid end temperature
• maintining proper bearing lubrication
• ensuring that the pump is operated in the intended hydraulic range
ATEX Identification
For a pumping unit (pump, seal, coupling, motor and pump accessories) to be certified for use
in an ATEX classified environment, the proper ATEX identification must be present. The
ATEX tag will be secured to the pump or the baseplate on which it is mounted. A typical tag
will look like this:
II 2 G/D X
The CE and the Ex designate the ATEX compliance. The code directly below these
symbols reads as follows:
II ------------ Group 2
2 ------------- Category 2
G/D ------------ Gas and Dust present
X ------------ Temperature class, can be T1 to T6 (see following table)
Maximum Process Temperature to Achieve Desired T rating
T Rating per EN 1127-1
Maximum Surface
Temperature
in Celsius
Maximum Process
Temperature
in Celsius
T1 450 410
T2 300 260
T3 20 0 165
T4 135 100
T5 100 65
T6 85 50