Installation, Electrical - ProMinent MAKRO TZ Operating Instructions Manual

Installation
Legend for hydraulic diagram
Symbol Explanation
Metering pump
Injection valve
Multifunctional valve

7.2 Installation, electrical

24
2
Fig. 14: Standard installation
1 Main line
2 Storage tank
Symbol
WARNING!
EX pumps in areas at risk from explosion
– Potential-free switches can be evaluated as simple elec‐
trical devices (EN 60079-14 or EN 50020).
– Only connect potential-free as well as non-isolating low
voltage switch accessories, such as diaphragm rupture
indicators, stroke frequency instruments etc., to an
intrinsically safe power circuit in areas at risk from explo‐
sion.
– If several electrical components are connected together,
test and confirm the technical safety of the entire con‐
nected system. This can either be in the form of a decla‐
ration of conformity from the supplier (ProMinent) for the
entire unit or, with the supply of individual components,
with the operator's explosion protection document.
– Only motor protection switches, mains switches and
fuses permitted for use in areas at risk from explosion in
line with the manufacturer's information may be used as
electrical components in areas at risk from explosion.
– Note the enclosed documentation for the individual elec‐
trical components.
1
P_MAZ_0001_SW
Explanation
Foot valve with filter meshes
Level switch
Manometer