Fault Finding; Disposal - Grundfos Vaccuperm VGB-103 Montage- Und Betriebsanleitung

9. Fault finding

Fault
1. Maximum dosing flow is not
reached.
2. Leaky pressure connection.
3. Gas escapes at the
overpressure line.
4. Despite correctly displayed
dosing capacity, the desired
chlorine solution concentration
is not reached.
5. The ball in the measuring glass
is caught.
6. Formation of ice on the chlorine
container.
7. Water in the measuring glass.
8. Vacuum varies despite constant
operating conditions.
9. The dosing capacity varies
despite constant operating
conditions.

10. Disposal

This product and all its associated parts must be disposed of in
an environmentally friendly manner. Use appropriate waste
collection services. If this is not possible, contact the nearest
Grundfos company or service workshop.
Cause
a) Insufficient injector vacuum.
b) Leakage in the vacuum line between dosing
regulator and injector.
c) Vacuum line between dosing regulator and
injector too long.
d) Soiled vacuum line.
e) Soiled filter at the pressure connection of the
dosing regulator.
f) Closed chlorine container valve.
g) Empty chlorine container.
h) Adjusting spindle of the dosing regulator not
suitable (diameter too small).
a) Gasket at the pressure connection damaged. Replace the gasket.
b) Sealing surfaces soiled with residues of old
gaskets.
c) Sealing surface at the chlorine container
damaged.
d) Pressure connection loose.
e) Sealing surface at the pressure connection
of the vacuum regulator damaged.
a) Re-liquefied gas gets into the inlet valve.
b) Inlet valve soiled or damaged.
a) Leakage in the vacuum line between vacuum
regulator and dosing regulator.
a) Measuring glass or ball soiled.
a) Extraction quantity is set too high. If more
than 1 % of the content is extracted per hour,
there is danger of formation of ice at the
container.
b) Chlorine gas dosing system too small.
a) Diaphragm non-return valve is defective.
a) Spring in the differential pressure regulator
soiled or damaged.
a) Diaphragm in the differential pressure
regulator soiled or damaged.
Remedy
Check the injector. Repair it, if necessary.
Observe the manual of the injector.
Check the motive water pump.
Repair it, if necessary.
Check the dirt trap before the injector.
Clean it, if necessary.
Eliminate the leakage.
For details on vacuum lines, see section
5.1.2 Vacuum lines between dosing regulator
and injector
Replace the vacuum line.
Call the service.
Open the chlorine container valve.
Replace empty chlorine container by a full one.
Call the service.
Clean sealing surfaces.
Use another chlorine container.
Tighten pressure connection.
Call the service.
Reduce the extraction amount, ensure a
correct temperature sequence.
Call the service.
Eliminate the leakage.
Call the service.
Use a dosing system with several chlorine
containers.
Call the service.
Use a bigger chlorine gas dosing system.
Call the service.
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