Jesco MEMDOS E, Operation Manual

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CAUTION!
Particular care must be taken when repairing the MEMDOS E if used in areas with a potentially explosive
atmosphere. Due to the risk of sparking, care must be taken to prevent metal parts or tools knocking against
one another. When repairing, it is better to move the dosing pump out of the area with a potentially explosive
atmosphere.
The instructions given in paragraph 7.2 "Installation location" and section 9 "Start-up" must be observed
before start-up.
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
cancel 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
All persons responsible for assembly and maintenance of piping, hoses and accessories should wear this
protective equipment.
Before working on the dosing pump and system, disconnect it from the mains supply and prevent it from
being switched on.
CAUTION!
Any chemical still present in the dosing head may spray out when the power 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 dos-
ing system requires special safety precautions
and is allowed only for suitably trained 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. Chemical may flow out 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.
General and Safety Instructions | Operation & Maintenance Instructions |
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