ProMinent Makro/ 5 Operating Instructions Manual page 25

CAUTION!
Warning about personal and material damage
Also observe the "General Operating Instructions for
ProMinent Motor-Driven Metering Pumps and
®
Hydraulic Accessories"!
CAUTION!
Suction problems possible
For feed chemicals with a particle size greater than 0.3
mm, the valves may no longer close properly.
– Install a suitable filter in the suction line.
CAUTION!
Warning against the discharge line bursting
With a closed discharge line (e.g. due to a clogged dis‐
charge line or by closing a valve), the pressure that the
metering pump generates can reach several times the
permissible pressure of the system or the metering
pump. This could lead to lines bursting resulting in
dangerous consequences with aggressive or toxic feed
chemicals.
– Install a relief valve that limits the pressure of the
pump to the maximum permissible operating pres‐
sure of the system.
CAUTION!
Warning against the discharge line bursting
Tube lines with insufficient pressure rating may burst.
– Only use tube lines with the required pressure
rating.
CAUTION!
Warning against lines disconnecting
With suction, discharge and relief lines installed incor‐
rectly can loosen / disconnect from the pump connec‐
tion.
– Only use original tubing with the specified tube
diameter and wall thickness.
– Only use clamp rings and tube nozzles that corre‐
spond with the respective hose diameter.
– Always connect the lines without mechanical ten‐
sion.
Installation
25