CAUTION!
Warning of the discharge line rupturing
With a closed discharge line (e.g. from a clogged dis‐
charge line or by closing a valve), the pressure that the
metering pump generates can reach several times more
than the permissible pressure of the system or the
metering pump. This could lead to lines bursting
resulting in dangerous consequences with aggressive or
hazardous 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 bursting of the suction or discharge
lines
Hose lines with insufficient pressure rating may burst.
– Only use hose lines with the required pressure
rating.
CAUTION!
Uncontrolled flow of feed chemical
Feed chemical can press through the metering pump in
an uncontrolled manner in the event of excessive pri‐
ming pressure on the suction side of the metering pump.
– Do not exceed the maximum permissible priming
pressure for the metering pump.
–
Set up the installation properly.
CAUTION!
Warning about lines coming loose
If suction, discharge and relief lines are installed incor‐
rectly, they can loosen / disconnect from the pump con‐
nection.
– Only use original hoses with the specified hose
diameter and wall thickness.
–
Only use clamp rings and hose nozzles that fit the
respective hose diameter.
– Always connect the lines without mechanical ten‐
sion.
CAUTION!
Warning against leaks
Leaks can occur on the pump connection depending on
the insert used.
– The pump is supplied with PTFE moulded compo‐
site seals with a flare, which are used for the pump
connections. They seal the connections between
grooved pump valves and the grooved inserts from
ProMinent - see
Ä Further information on page 26
.
– In the event that an unflared insert is used (e.g. third
party part), an elastomer flat seal must be used -
see
Ä Further information on page 26
.
Fig. 14: Moulded composite seals with
corrugated insert
Installation
27
To Next Page
Loading...
Need help?
General
