Packo AX - Pumps Resorting under the 2014;34;EC Directive (ATEX)

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2.4. Pumps resorting under the 2014/34/EC directive (ATEX)
PACKO pumps according to 2014/34/
EC are designed and manufactured
to reduce as much as possible the
risk of explosion. Nevertheless, the degree of
explosion safety of the pump in the installation
can only be assured by the joint precautionary
measures of the pump constructor PACKO and
the user.
The table below shows an overview of the risks
by pump type and whether the pumped liquid is
inammable, as well as the preventive measures
available.
The cells in the table where the text is italicized
indicate the absence of the risk.
The cells in the table where the text is in bold
indicate risks prevented by modications to the
pump by the constructor PACKO. The modica-
tions can only prevent the risk through proper
use by the end-user.
The cells in the table where the text is underlined
indicate risks that the user must avoid.
Pump
Risk
Liquid
Dry-running
mechanical seal
(Friction faces
overheated are
source of ignition)
Operating with
closed valve
(The outside wall
temperature can
be above the
temperature class)
Leak
(igniting liquid can
be release into
atmosphere)
Flooded
suction
Non-ignitable
liquid
Flushed seal
or temperature
control of seal or
ow monitor by
user
Flow monitoring
by the user
No danger
Flushed seal
or preventive
maintenance by
the user
Ignitable liquid
Air handling
or self-
priming
Non-combustible
liquid
Flushed seal No danger
Normal-priming pumps are pumps from the
series FP, NP, ICP, PHP, MCP, MFP, MWP, FPP,
IPP, SFP, FMS and NMS.
Air-handling pumps are pumps from the series
CRP, IRP, and PRP.
Self-priming pumps are pumps from the series
MS P.
The ashpoint of a liquid is the lowest tempera-
ture at which sufcient vapour is created above
a liquid so that it can ignite when mixed with air.
A combustible liquid is not ignitable as long
as the temperature is lower than the liquid’s
ashpoint. It is important to note that specic
components (primarily the mechanical seal and
the motor) of the pump can be warmer than the
temperature of the liquid being pumped. When
a mechanical seal runs dry, it becomes very hot
(up to 400°C +). As a result, a liquid with a ash-
point that is much higher than the temperature
at which it is being pumped must nevertheless
be considered as potentially inammable when
assessing the risk of dry running of the mechan-
ical seal and the risk of leaks.