Maintenance; Replacement Of Suction/Pressure Valves - Ecolab Elados EDPL V15 Notice Technique

10

Maintenance

Always rinse the metering head to remove dangerous media and depressurise the
CAUTION
pressure circuit before repair and servicing work. Wear protective clothing (safety goggles,
safety gloves and apron).
Repairs on electrical equipment may only be carried out by trained electricians
(Employers' Liability Association safety rules VB G 4 and ZH 1/11).
Live parts may be exposed when opening covers or removing parts, apart from covers that
CAUTION
can be opened or parts that can be removed without using tools). Connection points may
also be live.
Before any adjustment, maintenance work, repair work or exchange of parts, the device
must be disconnected from all sources of power if opening of the device is necessary.
The normal maintenance interval is every six months, but shorter intervals may be
required if parts are subjected to heavy stresses
NOTE
(e.g. continuous operation)
The following inspections are recommended:
 suction pipes and pressure pipes for leak-free connections;
 suction valve and pressure valve (chapter 10.1) for dirt and tightness;
 discharge connection (chapter 5, Fig. 5.1) on the pump head (for diaphragm bursts);
 correct metering;
 metering head screws (chapter 10.2, Fig. 10.5, pos. 1), (stable seat, 12 Nm)
 oil-level on oil-level gauge glass (minimum level see Fig. 10.6).
The service life of the diaphragm depends on the following:
•
NOTE
We recommend that you check the diaphragm more frequently in extreme operating
conditions and if metering abrasive substances.
10.1

Replacement of suction/pressure valves

 Loosen value in an anticlockwise direction using a spanner
(1¼" valve SW 41; 2" valve SW 56) and unscrew it.
 Exchange o-rings.
 Screw the valve into the metering head; heed the direction arrow! (Points up!)
Fig. 10.2
417102213_EDP L_V15.docx
.
Back-pressure, operating temperature and metering medium.
Fig. 10.1
INFORMATION ON OIL CHANGE:
The gear oil must be changed after a maximum of 10,000 hours in
operation or every two years (see chapter
Oil specification in accordance with ISO 6743 L-CKT 320.
The direction of flow of the metering medium is marked by an
impressed arrow on the suction/pressure valves.
When installing the valves, you must ensure that the flow direction
is correct.
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10.3 "Gear oil change").
Rev. 1.10.11