8
Start up and operation
WARNING!
ATEX pumps in areas at risk from explosion
–
Make sure that a suitably competent person checks
whether the appropriate installation information from the
"Installation " chapter has been implemented correctly.
–
A "recognised competent person" must check the elec‐
trical installation and in particular the intrinsically safe
electric circuit.
–
Set the opening pressure of the relief valve at a max‐
imum of no more than 1.5 times the rated pressure of
the pump.
WARNING!
Fire hazard with flammable media
Only with combustible media: These may start to burn when
combined with oxygen.
–
During filling and draining of the liquid end, an expert
must ensure that feed chemical does not come into con‐
tact with oxygen.
WARNING!
Hot surface
In event the power end motor is loaded excessively, its sur‐
face may become very hot.
–
Avoid contact.
–
If necessary, mount a guard plate.
WARNING!
Risk of burns with hot feed chemicals
If hot feed chemicals can heat the liquid ends above the per‐
missible surface temperatures, persons can suffer burns
from them.
–
Consider attaching a "Hot surface" label to the liquid end
or ...
–
fitting a guard plate.
WARNING!
Only motors with a frequency converter: Danger of electric
shock
On conducting parts of the motor with an integrated fre‐
quency converter and on the lines themselves, there remains
a risk of an electric shock for 3 minutes after switching off the
mains voltage.
–
After switching off allow the device to stand for 3 minutes
before opening the terminal box.
Safety information
Start up and operation
35
