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0698-451 B70H - 07/2020
en
2.2.2 Operation in hazardous location or pumping flammable liquids
!
DANGER
Danger of explosion when using in explosion hazard area
The classification of flammable liquids is made according to regulation (EC) 1272/2008 (CLP). When pumping
flammable liquids, the operational safety regulation and the following points have to be observed:
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The operator must create an explosion protection document for his field of application. This document
must indicate the division of the explosive area into zones. Only devices of category 1 may be used in
areas of zone 0 and devices of category 1 or 2 in areas of zone 1.
i
The pumps are used to pump liquid products from mobile vessels. The pump corresponds to
category 2 when used as intended.
• Only use pumps with ATEX-identification.
• Only operate the pump in filled condition.
• Only use explosion-proof drive motors. Select motors suitable for the respective size with a power of up to
2 kW and a maximum speed of 900 rpm.
• Only pump flammable liquids of explosion protection groups IIA and IIB and, depending on the marking,
temperature classes T1 to T4.
• The maximum ambient temperature must not be exceeded.
In case of marking II 2 G Ex h IIB T4 Gb: -20 up to +40 °C
In case of marking II 2 G Ex h IIB T3 Gb: -20 up to +60 °C
• The pump may only be installed horizontally.
• Pump may not be used stationarily.
• The maximum medium temperature of 100 °C must not be exceeded.
• Only use stators made of PTFE.
• The operator must continuously monitor the pump during operation to prevent the pump from
pumping against a closed shut-off device and thus causing the fluid remaining in the tank to heat up
to impermissible levels. If this cannot be prevented, a bypass valve with return line must be installed.
• Install the pump with outrun piece inclined upwards or mount a check valve on the outrun piece inclined
downwards, to prevent the tank from draining and also from dry running (
→
chapter 5.1).
• Pump operation may cause the flowing fluids to pick up an electrostatic charge.
