Special Installation Instructions - ProMinent EXtronic EXBb Operating Instructions Manual

Fault description Cause
feed chemical The suction-side priming pressure is too
presses through the high due to the negative pressure differ‐
liquid end. ence between the discharge and suction
side.
P_MAZ_0011_SW
Fig. 15
Fault description
The suction line may
tear off.
The metering pump
meters the feed chem‐
ical in a cycle.
Fig. 16

7.5 Special installation instructions

With high suction-side pressure 1
P_MAZ_0013_SW
Fig. 17
With high suction-side pressure 2
P_MAZ_0014_SW
Fig. 18
Cause
The overflow line is routed back into the suc‐
tion line, which may be secured or blocked
with a foot valve.
The overflow line is routed back into the suc‐
tion line, whereby it is possible that the multi‐
functional valve no longer closes after being
opened.
Position the end of the discharge line higher than the fluid level
n
in the storage tank to avoid overstraining.
Position the outlet of the discharge line higher than the fluid
n
level in the storage tank.
Installation, hydraulic
Remedy
Ä 'With high suction-
Install as shown in
side pressure 3' on page 26 or Ä 'With
high suction-side pressure 2'
on page 25 .
Remedy
Ä 'Avoid exceeding
Install as in
maximum permissible operating
pressure' on page 24 .
Install as in Ä 'Avoid exceeding
maximum permissible operating
pressure' on page 24 .
25