How Not To Install - ProMinent delta General Operating Instructions

Installation, hydraulic

3.5 How not to install

Fault description
The suction line cannot be
bled.
P_MAZ_0009_SW
Fig. 16
Fault description
Feed chemical flows uncontrolled
when the line is filled.
P_MAZ_0010_SW
Fig. 17
Fault description Cause
feed chemical The suction-side priming pressure is too high
presses through the caused by the negative pressure difference
liquid end. between the discharge and suction side.
P_MAZ_0011_SW
Fig. 18
Fault description
The suction line can pull off.
The metering pump meters the
feed chemical in a cycle.
P_MAZ_0012_SW
14
Cause
A pocket of air (arrow) is in the
suction line.
Cause
Siphon effect by discharge
line falling too deeply.
Cause
The overflow line is routed back to the suction line, which is
secured with a foot valve or can be blocked.
The overflow line is routed back to the suction line, whereby the
multifunctional valve possibly no longer closes after being
opened.
Remedy
Prevent the air pocket or install as shown in
high suction-side pressure 1' on page 15 .
Remedy
Interrupt the discharge line, as in
suction-side pressure 2' on page 15
Remedy
Install as shown in
pressure 3' on page 15 or Ä 'With high suc‐
tion-side pressure 3' on page 15 .
Ä 'With
Ä 'With high
Ä 'With high suction-side
Remedy
Install as in
Fig. 13.
Install as in
Fig. 13.