Ignition hazard
Protective measures to be observed by the cus‐
tomer
Excessive surface pressure
Limitation of the maximum temperature of the feed
chemical
Pump running hot
The customer must monitor and maintain the pump
in accordance with the “Maintenance” chapter.
The customer must monitor the capacity.
The customer must fit a relief valve on the discharge
side.
Mechanically generated sparks from the mechanism
with low oil
The customer must monitor and maintain the pump
in accordance with the “Maintenance” chapter.
Electrical stray current in the event of a short circuit
The customer must earth the pump and maintain the
earthing of the individual components.
Electrical stray current in the event of a lightning
strike
The customer must put in place measures in accord‐
ance with EN 1127-1, if necessary.
Static electricity
The customer must earth the earthing points and
maintain the potential equalisation cables of the indi‐
vidual components.
The customer must pay attention to potential equali‐
sation when dismantling.
Paint should not be applied too thickly.
Dosing heads made of electrically non-conductive
materials must not be used.
The customer must wire the diaphragm rupture indi‐
cator in such a way that it immediately stops the
pump.
Electromagnetic waves (also lasers), ionising radia‐
tion and ultrasound have an impact on the pump
The customer must put in place measures in accord‐
ance with EN 1127-1, if necessary.
Adiabatic compression and shock waves
Non-conductive feed chemicals: Do not allow the
unit to run dry – even when filling and emptying the
liquid end.
Deposits of dust
Regularly clean the outside of the pump with a damp
cloth.
Flammable feed chemicals
The pump must only be allowed to meter flammable
feed chemicals with electrically well-conducting
dosing heads.
Make sure that the diaphragm rupture indicator
stops the pump immediately in the event of a dia‐
phragm rupture.
Summary of relevant ignition hazards
and protective measures put in place
for the Makro TZ in accordance with
EN ISO 80079-36
Safety chapter
16