▪ Decontaminate pumps which handle fluids posing a health hazard. (⇨ Section 7.3
Page 50)
▪ As soon as the work is complete, re-install and/or re-activate any safety-relevant
and protective devices. Before returning the product to service, observe all
instructions on commissioning. (⇨ Section 6.1 Page 38)
2.9 Unauthorised modes of operation
Never operate the pump (set) outside the limits stated in the data sheet and in this
manual.
The warranty relating to the operating reliability and safety of the supplied pump
(set) is only valid if the equipment is used in accordance with its intended use.
2.10 Explosion protection
Always observe the instructions on explosion protection given in this section when
operating the pump in potentially explosive atmospheres.
Only pumps/pump sets marked as explosion-proof and identified as such in the data
sheet may be used in potentially explosive atmospheres.
Special conditions apply to the operation of explosion-proof pump sets to EC
Directive 94/9/EC (ATEX).
Especially adhere to the sections in this manual marked with the Ex symbol and the
following sections (⇨ Section 2.10.1 Page 11) to (⇨ Section 2.10.4 Page 12).
The explosion-proof status of the pump set is only assured if the pump set is used in
accordance with its intended use.
Never operate the pump (set) outside the limits stated in the data sheet and on the
name plate.
Prevent impermissible modes of operation at all times.
2.10.1 Marking
The marking on the pump refers to the pump only.
Example of such marking: II 2 G c TX
Refer to the Temperature limits table for the temperatures permitted for the
individual pump variants. (⇨ Section 2.10.2 Page 11)
An EC manufacturer's declaration is required for the shaft coupling; the shaft
coupling must be marked accordingly.
The motor must be considered separately.
2.10.2 Temperature limits
In normal pump operation, the highest temperatures are to be expected on the
surface of the pump casing, at the shaft seal and in the bearing areas.
The surface temperature at the pump casing corresponds to the temperature of the
fluid handled. If the pump is heated in addition, the operator of the system is
responsible for observing the specified temperature classes and fluid temperature
(operating temperature).
The table below lists the temperature classes and the resulting theoretical
temperature limits of the fluid handled (a possible temperature rise in the shaft seal
area has already been taken into account).
The temperature class specifies the maximum permissible temperature at the surface
of the pump set during operation. For the permissible operating temperature of the
pump in question refer to the data sheet.
Table 5: Temperature limits
Temperature class as per EN 13463-1 Maximum permissible fluid
temperature
T1
Maximum 400 °C
2)
T2 280 °C
Pump
Shaft coupling
Motor
2 Safety
KWP
11 of 78
To Next Page
Loading...
Need help?
General
