Title: Våtventil Brukermanual.pdf
Notify the authority having jurisdiction, remote station alarm monitors, and those in the affected area that the system is being taken out of service .The cover plate could blow off if the cover plate bolts are removed while the valve is pressur- ized, resulting in serious personal injury and/or property damage.32 . Close the water supply main control valve (3) to take the systemout of service .4 . After all pressure is released from the system, loosen the cover plate bolts slowly . NOTE: DO NOT remove any cover plate bolts until all cover plate bolts are loosened .4a . Remove all cover plate bolts, along with the cover plate and coverplate gasket .I-751.VDS_13MAINTENANCE The following sections instruct on how to remove and replace internal valve components . Care must be taken to avoid damage to parts during removal and installation .WARNINGDepressurize and drain the piping system before attempting to remove the cover plate from the alarm check valve.