Maintenance | Operation Manual C 2213 |
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9 Maintenance
Regular maintenance spares yourself a lot of trouble!
A maintenance contract is advisable.
If there are no rules/specifications (e.g. GUV-V D 5) or special annotations prescribing shorter maintenance
intervals, all chlorinators of the manufacturer have to be maintained and tested by an authorized specialist firm
at least once a year. Preferably this should happen at the beginning of a high-rate period, prior to a downtime
or a restart. Please make sure that the chlorine cylinders are closed before starting work on the chlorinator. The
plant must be evacuated using the ejector until the flow meter indicates zero.
The vacuum regulator is then dismantled, cleaned and parts subject to wear are exchanged. All other parts
are inspected visually and exchanged if necessary. The generally required parts subject to wear are included
in the maintenance kit (see „Maintenance kits“ on page 38). For cleaning the components, warm water
or isopropyl alcohol are perfectly suited. Before remounting the components, make sure that they are dry.
Gaskets and diaphragms should be wetted slightly using silicone grease. The seals on the inlet valve must be
dry when fitted. Pressure springs can be attacked chemically by humidity. This is why they are included in the
maintenance kit. Pressure springs must never be compressed completely for testing. Because this will result in
overstress. Use the tool set with article no. 35280 for service.
9.1 Dismounting of the complete vacuum regulator
First the inlet valve is separated from the plastic vacuum part by unscrewing the four screws. (see Fig. 13)
9.1.1 Dismounting of vacuum regulator
The housing of the vacuum part is screwed. If it may not be possible to dismount it by hand, use the cor-
responding face spanner (like part no. 35277).
4x
Fig. 13: Open the vacuum part with a face spanner
and loosen the connection between vacuum part and inlet valve
For dismounting the diaphragm, special clamping wrenches (part no. 31616) or face spanner (spigot-ø 3mm
- part no. 35279 and 4mm - part no. 35278) are used. The diaphragm and the O-ring in the diaphragm disc
should always be exchanged. In doing so be careful not to damage the bottom of the O-ring groove.
