Jafar 1350 Handbuch für Betrieb und Wartung - Seite 11

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The assembly method for the anticontamination valve is shown in the following figure:

4.3 OPERATION

The antipollution check valves shall be operated according to the requirements for check valves,

in the orientation shown in the recommended installation orientation diagram. It is recommended to periodically

purge the valve with fresh water (once a year) to assure full performance. Hard solids with the size above 1mm

should be filtered out of the transmitted medium by an upstream filter to prevent seizure of the poppet gear and

damage to the seals.

Install cut-off valves upstream and downstream of the valve to allow maintenance.

Install the valve horizontally with its drain valve downwards;

connect the drain valve to a drainage system (sewage pipework or drain gullies) with a minimum of 20 mm of air

gap between the top edge of the drain line and the drain valve outlet. A filter should be installed directly

upstream of the valve. The installation site and method shall assure free access for maintenance and servicing.

Do not install the valve in a location exposed to flooding.

The product shall not be exposed to temperatures outside of the permissible operating range.

Overrunning the valve operating limits may damage the valve

and the manufacturer's suretyship liability shall not apply.

4.4 OCCUPATIONAL HEALTH AND SAFETY

The antipollution check valves are eligible for

the OHS guidelines and recommendations concerning installation of pipelines and devices for: water supply

stations, heat power plants, water treatment plants, sewage treatment plants, pumping stations and other

facilities, and eligible for the Polish Regulation concerning general OHS laws (use of personal protective

equipment for hands, legs and head, and safety garment), especially at work with low or high temperature

hazard.

Misuse of this product is prohibited.

5 WARRANTY TERMS AND CONDITIONS

The product assembled, installed and operated in compliance with this Manual is covered by a commercial

warranty from the manufacturer.

The warranty terms, conditions and period are specified in the relevant Warranty Sheet.

OPERATION AND MAINTENANCE MANUAL

01-2016