Start Up And Operation - ProMinent Makro TZ Operating Instructions Manual

Start up and operation

8 Start up and operation
Safety information
38
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.
– Make sure that a "recognised competent person"
checks the electrical installation and in particular the
intrinsically safe power circuits.
– Set the opening pressure of the relief valve to a
maximum of no more than 1.5 times the nominal
pressure of the pump.
WARNING!
ATEX pumps in areas at risk from explosion
The ignition temperature is reduced significantly below
the ignition temperature at atmospheric pressure due to
compression with the discharge stroke of the possibly
ignitable vapour-air mixture.
– Do not allow it to run dry.
WARNING!
Fire hazard with flammable media
Only with flammable media: They can be ignited by
oxygen.
– The pump may not work if there is a mixture of feed
chemical with oxygen in the liquid end. A specialist
may need to take appropriate actions (using inert
gas, ...).
WARNING!
Only motors with a frequency converter: Danger of elec‐
tric shock
There remains a risk of an electric shock for 3 minutes
after the mains voltage has been switched off on con‐
ducting parts of the motor with an integrated frequency
converter and on the lines themselves.
– After switching off, allow the device to stand for 3
minutes before opening the terminal box.
CAUTION!
Only motors with a frequency converter: The motor can
be damaged
The input current limiter could be damaged if a motor
with an integrated frequency converter is restarted within
3 minutes of the mains voltage being switched off.
– After switching off, allow the device to stand for at
least 3 minutes before restarting.