OPERATION AND MAINTENANCE MANUAL Skum Bladder Tank Type Vertical. Table of Contents Page General Description 2 1. Installation 1.1 Safety 2 1.2 Transporting 2 1.3 Inspection 2 1.4 Filling Instruction 3-7 2. Maintenance and Inspection 2.1 Maintenance 8 2.2 Inspection 8 3. Trouble Shooting 8 4. Repair 8 Svenska Skum AB Tel: +46 303 57700 Page 1 of 8
General Description The new Skum Bladder Tank is designed to meet a wide variety of demands for many different applications. The bladder tank system will inject foam concentrate in to the water supply piping. This system will automatically and accurately proportion over a wide range of flows and pressures. The required percentage can easily be set at the TP/TPW unit (proportioner). The water supply feeds and pressurises the TP/TPW unit; this pressure also pressurises the Tank. This means that the foam concentrate have the same pressure through the elastic bladder inside the Tank. This pressure wills therefore feed the TP/TPW unit with foam concentrate from a pipe, and downstream after the proportioner the premix has the right mixing rate. 1. INSTALLATION 1.1 Safety The installation is uncomplicated but must be carried out by qualified personnel. The directions given in this manual must be followed. Make sure that the bladder tank and its components are safely secured when installing and running the bladder tank system. Use only lifting gear and equipment that are well suited for the purpose. 1.2 Transporting During transport the air surrounding the bladder is evacuated to form a vacuum to prevent damages to the bladder, do not open valves. 1.3 Inspection Inspect the bladder tank and any additional equipment for damage that might have occurred during transport. Check marking and signs of the equipment against material specification / order confirmation. Locate the tank in it s correct location and complete the pre-piping. Svenska Skum AB Tel: +46 303 57700 Page 2 of 8
1.4 Filling The instructions and methods must be followed to prevent personal injury and damages to the equipment. When filling the tank use suitable equipment, to prevent spillage use an overflow tube attached to the vent of the water and foam concentrate. Caution: foam concentrate on the Tank is very slippery. Keep the tank and the floor clean from foam concentrate. During transport of the tank, the bladder is filled with air, to ensure it retains the right position in the tank shell. All valves will be closed from factory. 1.4.1 Normal Stand-By position The normal Stand-By Position valve status: Valve 1 closed Valve 2 closed. Valve 3 closed. Valve 4 open. Valve 5 closed. Valve 6 closed. Valve 7 open, connection foam concentrate. Valve 8, swing check valve or a closed Water Activated Foam Valve. Water vent Foam vent Level indicator Water drain Foam Concentrate Supply Water Non-return valve (alt. WAFV) Foam solution Proportioner TP/TPW Svenska Skum AB Tel: +46 303 57700 Page 3 of 8
1.4.2 Initial Filling Inspect that all valves are closed. To let the air out, open first valve 2 and then valve 1, then open valve 3. Connect the foam concentrate pump to the feeding pipe (pos 8), and then start the pump. Open valve 7 slowly. The tank indicates that it is almost filled when foam and air bubbles mixed together detected in valve 2, continue to fill until foam concentrate without air bubbles appears in valve 2. The tank is now completely full. Close valve 2 and valve 7, shut of the hand pump and remove it, then close valve 1 and valve 3. Open valve 4 and valve 5. The bladder tank system is now in normal Stand-By position and is ready to be activated. Note! If the check swing valve pos 8 has been replaced with a Water Activated Valve, it must remain to be closed. Hand pump filling Foam Concentrate Svenska Skum AB Tel: +46 303 57700 Page 4 of 8
1.4.3 Filling after discharge Caution: The bladder tank may be under pressure when opening valves. Do not put body or face in front of valve before pressure has been vented. Isolate the tank by closing valve 4 and valve 5. Carefully vent pressure from tank by open valve 1. To prevent spillage on the tank and floor use an overflow tube to the vent of the water and foam concentrate. Connect the foam concentrate pump to the feeding pipe. Start pump, then open valve 7 slowly. The Tank indicates that it is almost filled when foam and air bubbles mixed together detected in valve 2, continue to fill until foam without air bubbles appears in valve 2 and water stops flowing from valve 1. The tank is now completely full. Stop the pump, close valve 2 and valve 7, remove the pump, then close valve 1. Open valve 4 and valve 5. The bladder tank system is now in normal Stand- By position and is ready to be activated. Note! If the check swing valve pos 8 has been replaced with a Water Activated Valve, it must remain to be closed. Hand pump filling Foam Concentrate Svenska Skum AB Tel: +46 303 57700 Page 5 of 8
1.4.4 Manual Filling Manual filling should only be required when very small amounts of foam concentrate need to be replaced, otherwise use pump. Caution: The bladder tank may be under pressure when opening valves. Do not put body or face in front of valve before pressure has been vented. Manual Filling Isolate the tank by closing valve 4 and valve 5. Carefully vent pressure from tank by opening valve 1. Open valve 3 and let all water drain from the tank. The amount of drained water indicates the required amount of foam concentrate that needs to be filled. Open valve 2 and hand fill the tank with suitable equipment. When foam and air bubbles mixed together are detected in valve 2 stop fill and wait for the air bubbles to rise to the surface, this could take a while. Repeat filling procedure until foam without air bubbles appears in valve 2 and water stops flowing from valve 1. Use an overflow tube to drain the water at valve 1 and valve 3. The foam concentrate is very slippery, clean the tank and the floor from foam concentrate to avoid injuries. Close valve 2 then valve 1 and valve 3. Open valve 4 and valve 5. The bladder tank system is now in normal Stand-By position and is ready to be activated. Note! If the check swing valve pos 8 has been replaced with a Water Activated Valve, it must remain to be closed. Svenska Skum AB Tel: +46 303 57700 Page 6 of 8
1.4.5 Level Indication (optional) To read/find the level of foam concentrate in the tank. Isolate the tank by close valve 4 and valve 5. Carefully vent pressure from the tank by opening valve 1. Open valve 3 and let the water drain from the tank, then open valve 2. Open valve 6 and measure foam concentrate level; this may take some time. If the system needs to be filled, follow the instruction 1.3.3 or 1.3.4. If the foam concentrate level is acceptable and does not need to be refilled. Level indicator Close valve 6 and valve 3. Fill the tank with water at valve 1, when the tank is full with water close valve 1 and valve 2. Open valve 4 and valve 5. The bladder tank system is now in normal Stand-By position and is ready to be activated. Note! If the check swing valve pos 8 has been replaced with a Water Activated Valve, it must remain to be closed. Svenska Skum AB Tel: +46 303 57700 Page 7 of 8
2. Maintenance and Inspection 2.1 Maintenance Check all valves to insure that they are in the normal Stand-By position according to instruction in 1.4.1. After using the system, close valve 5 and valve 4 flush the proportioner and the system by allowing the main water supply to flow until clear water issues from devices (foam generators, sprinkler heads etc) being operated. Open valve 4 and valve 5. The bladder tank system is now in normal Stand-By position and is ready to be activated. Note! If the check swing valve pos 8 has been replaced with a Water Activated Valve, it must be closed manual by using the handle sitting on top of the valve. 2.2 Inspection Inspect the system for physical damage and repair. Check flanges and piping for leakage. Check flange bolts for tightness. Inspect the fire water supply system to ensure that it will be operational when required. 3. Trouble Shooting Check all valves to ensure that they are in the normal Stand-By position. If using motor driven control valves make sure there is power. Ensure that there is freedom of movements in the valves. Make sure that there is foam concentrate in the bladder. Make sure that water supply system deliver right pressure and flow. If the system still does not work properly, contact your Supplier or Svenska Skum for advice. 4. Repair Personell familiar with the system and this type of work must carry out repair on the Skum bladder tank system. Contact your supplier or Svenska Skum for advice. Svenska Skum AB Tel: +46 303 57700 Page 8 of 8