1.9 Unauthorised modification and production of spare parts
The device may only be modified or converted in consultation with the manufacturer. Use only the manufac-
turer's spare parts and accessories. Otherwise the warranty is invalidated.
1.10 Inadmissible operating practices
Any methods of operation other than those described in Section 2 "Proper use" are not permitted and will
invalidate any manufacturer liability under the warranty.
1.11 Dosing of chemicals
CAUTION!
When working on dosing systems, the local accident prevention regulations must be observed and the
specified personal protective equipment must be worn. The following standard protective clothing is recom-
mended, depending on the hazardousness of the metered medium:
Protective clothing
Protective gloves
Protective goggles
It is recommended that all persons responsible for the installation and maintenance of piping systems,
hoses and accessories wear this protective clothing.
Before working on the dosing pump and system, disconnect it from the mains power supply and prevent it
from being switched on.
CAUTION!
Any chemical still present in the dosing head may spray out when the voltage supply is reconnected. This
may lead to chemical or other burns to the face and hands. Dosing lines must always be connected before
switching on again.
The chemical resistance of the construction materials in the pump must be verified before dosing aggres-
sive media!
The pump dosing head and the system connections and lines may be under pressure. Working on the
dosing system requires special safety precautions and may only be carried out by instructed technical
personnel:
CAUTION!
Chemical may spray out. This may lead to chemical or other burns. Always release the pressure before
starting work on the dosing pump.
Before working on the dosing head, valves and connections, flush the dosing pump with a harmless medium
(water in most cases), to avoid unintentional contact with the metered medium.
WARNING!
Never look into the open end of a clogged line or valve. Chemicals may emerge unexpectedly and cause
chemical or other burns to face and hands.
Before start-up, all screw connections must be inspected for correct tightness and leak-tightness, and must
be re-tightened using an appropriate tool if necessary.
CAUTION!
If connections at the dosing head are loosened during operation, for venting or other reasons, leaking chem-
icals must be removed properly. Only in this way is it possible to effectively avoid the risk of injuries caused
by chemicals and corrosion at the dosing pump. Leaking chemicals may also damage the diaphragm at its
mounting edge.
Safety instructions | Operation & Maintenance Instructions |
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