Accurex XRRS Installation, Operation And Maintenance Manual

Also see for XRRS: Installation, operation and maintenance manual

Accurex XRRS Installation, Operation And Maintenance Manual Manual pdf 23 page image

23Fire Ready HoodAfter an ActuationThe fire suppression system must be recharged andrestored to service immediately after any discharge forcontinued fire suppression protection.Clean-Up ProceduresDue to the alkaline nature of the fire suppressing agent,kitchen surfaces must be cleaned immediately aftersystem discharge. The wet chemical agent dischargedproduces a foamy by-product that can be wiped up witha cloth or sponge.Clean-up procedures are as follows:1. Before clean-up ensure that all fuel or electricalsources to the equipment to be cleaned have beenshut off. Unplug exhaust hood and all applianceelectrical controls to avoid any chance of electricalshock resulting from the cleaning process or froman electrically conductive liquid agent.2. Discard food and cooking oil that has contacted theextinguishing agent since it is no longer suitable forconsumption.3. Wipe up as much of the agent as possible withpaper towel or disposable rags.4. Use hot, soapy water to clean away all residue andany surfaces that the agent has come in contactwith.5. Completely dry all areas before continuing theservice procedure.Inspect the Unit for DamageBe sure no components of the hood were damagedfrom fire/heat.Determine Cause of DischargeDetermining the reason for the system discharge beforerecharging the fire suppression system and resetting theunit is critical to ensure either the system performed asdesigned, or was caused by a component malfunction.Great care has been taken to simplify field installations,so system malfunctions should be extremely rare.• A fire may have caused the fusible links to melt,causing the system to discharge. In case of fire,inspect the electrical system and all wiring for heatdamage.• The remote pull station (optional) may have beenpulled.• If fusible links have not been changed within the past12 months, they may have stretched and released theactuation cable.WARNING• Safety glasses and gloves must be worn for all thefollowing operations. Flush thoroughly with cleanwater if agent comes in contact with skin or eyes.• Allow time for cooling before attempting anycleaning. Using water to clean any appliance thatcontains hot grease or cooking oils, may result inviolent steaming or splattering.How to Reset the Suppression SystemResetting and testing release mechanisms, remotepull, and fusible links.Reset detection system by completing the followingsteps:1. Remove extinguisher tank2. Make sure tension arm cable is in the released slackposition.3. Remove the 3 fusible links from the cable assemblyand replace links with 2 new properly rated linksand one test link at terminal end.4. Return tension arm and cable mechanism to acocked position.5. Using wire snips, cut the test link at the terminal endto simulate an actuation.6. If system actuates successfully, go to Step 8.7. If the release mechanism does not actuate, checkthe following components and remedy any disorderas follows:a. Check the detector links for correct positioningthrough pulleys in system and for possible twistsor knots in the cableb. Ensure that actuator arm is in place and iscocked.c. Retest the system after installing a new test linkon the terminal end.d. Verify that safety pin is removed from suppressiontank. If problems persist call the factory at 1-800-371-6858.8. Upon successful actuation of the system, completethe following steps:a. Release cable from actuation lever and install aproperly rated fusible link in the terminal location.b. Replace extinguisher tank and reattach cable toactuation lever to place it into its “ready” position.Recharge Tank1. Placing the hood into the service position allows forremoval of tank and examination of components.2. Disconnect the tank pressure switch and the hosedischarge assembly connection and remove thetank from the hood. It is recommended to replacethe pin back into the tank in case of left oversuppression media.3. Remove the tank valve assembly and inspect thevalve and O-rings for damage. Thoroughly flush thevalve and O-ring with water.4. Once flushing is complete, refill the tank withthe measured amount in the recharge and refillkit, screw on valve assembly, and recharge withnitrogen to a pressure of 100-105 psi (green zone onpressure gauge).5. Reinstall tank and ensure all systems have beenthoroughly checked and retested with new links.The system can now be put into service.