Fault Table - HEROSE 06001 Notice D'utilisation

7.3

Fault table

Fault

Ov erflow valve
does not respond

Not lif table

Leak in the seat

Damage to the
inlet/outlet

Pressure surges

Constantly blowing
of f

Fluttering

Inadequate
perf ormance
22
Operating instructions
Cause
Cov ers have not been
remov ed;
Set pressure too high;
Back pressure not taken into
account;
Pressure below 85% of the set
pressure;
Foreign bodies between cone
and seat, contaminated
medium;
Seat damaged;
Cone seal damaged;
Ov erflow valve has fluttered;
Transport damage;
Wrong connecting thread /
tightening torque too high;
Impermissible forces such as
bending or torsional forces are
being transmitted.
Ov erflow valve not fitted at the
highest point;
water not drained correctly or
at all;
Spring corroded by
impermissible medium and
broken;
Sy stem pressure too high
Seal damaged;
Pressure loss in the supply line
>3%;
Seals f or inlet and outlet
connector too small or not
installed centrally;
ov erflow valves are too highly
rated;
Blow-of f pipe too long or
diameter too small;
Inlet or outlet connector too
small;
Back pressure higher than 3%;
ov erflow valves incorrectly
conf igured for the plant
conditions;
Ov erflow valves not being used
in accordance with the
applicable regulations;
Phone +49 4531 509-0
Remedial action

Remove covers.

Replace the overflow valve.

Replace the overflow valve.
 Lif ting in the range ≥85 % of the set
pressure without aids.

Remove foreign bodies by briefly
lif ting / flush the system or replace
the ov erflow valve.

Replace the overflow valve.

Replace the overflow valve.

See "Fluttering".

Replace the overflow valve.

Replace the overflow valve.

Install stress-free.

Install the overflow valve at the
highest point.

Attach water drain according to
regulations.

Replace the overflow valve.

Replace the overflow valve.

Replace the overflow valve.

Reduce resistance through chamfer
or radius in the connecting socket;
choose a larger one if necessary.

Shorter supply line.

Incorrect overflow valve, replace it.

Change conditions.

Select smaller overflow valves.

Use a larger nominal diameter or a
back-pressure-compensating
stainless steel bellows. The max.
height is to be specified by the
manuf acturer.

Dimensions must be larger than the
nominal inlet or outlet diameter.

Use back-pressure-compensating
stainless steel bellows. The max.
height is to be specified by the
manuf acturer.

Re-dimension and replace the
ov erflow valve.

Change conditions.