Working In Potentially Explosive Atmospheres - FLUX F 570 Originalbetriebsanleitung

Safety
2.4

Working in potentially explosive atmospheres

 Observe the Technical Guidelines for Flammable Liquids (TRbF) as well as explosion
protection guidelines for raw materials and the chemical industry as laid down by statu-
tory accident insurance and prevention institutions (BG RCI).
 When pumping flammable media of explosion groups IIA and IIB and temperature clas-
ses T1 to T4, only progressive cavity pumps approved for use in category 1 (ZONE 0)
may be used.
 Observe the EU type examination certificate or certificate of conformity.
 The progressive cavity pump must not be used in a stationary position in potentially ex-
plosive atmospheres.
 Keep possible ignition hazards away from the pump.
 Use a motor protection device including a switch-on lock to prevent unintended auto-
matic start-up (e.g. by switching on the progressive cavity pump by plugging it in).
 For automatic filling, a motor with protection device without switch-on lock can also be
used.
 In potentially explosive atmospheres, only explosion-proof motors with approval for cat-
egory 2 may be used.
 If the motors are operated together with the progressive cavity pump, a comprehensive
and clear equipotential bonding must be ensured (see chapter 7.2 Establishing equipo-
tential bonding).
 Connect the electric motor with an explosion-proof plug or via an explosion-proof termi-
nal box.
 Arrange the progressive cavity pump in such a way that friction sparks and impact
sparks are prevented and safe operation is ensured by the operating conditions.
 Any repairs at explosion-proof progressive cavity pumps and motors may only be car-
ried out by service personnel or an authorised workshop.
 Cleaning and maintenance must not be carried out inside the potentially explosive at-
mosphere.
 When pumping non-conductive media, there is a possibility that the pumped medium
may become electrostatically charged.
 The explosion-proof motor, gearbox and coupling must be outside the movable vessel.
 The hose used must be sufficiently conductive (see IEC-TS-60079-32-1).
 Regularly check all motors according to the applicable/country-specific regulations and
accident prevention regulations (in Germany e.g. DGUV regulation 3).
 Handling fluids with low conductivity can lead to static charges. For this reason, check
the filling process again (observe IEC-TS-60079-32-1).
Operating instructions VISCOPOWER 73