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Summary of Contents for Hogfors 31300CS Series
- Page 1 INSTALLATION AND OPERATION MANUAL 31300CS SERIES 30/04/2014...
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Page 2: Table Of Contents
INSTALLATION AND OPERATION MANUAL 31300CS SERIES CONTENT General ....................3 Transport and storage ..............4 Hoisting ....................5 Installation position ................6 Recommended mounting ..............11 Welding ....................12 Flushing ....................13 Start up ....................14 Control use ..................15 Cavitation ..................... -
Page 3: General
INSTALLATION AND OPERATION MANUAL 31300CS SERIES General For complete information regarding the installation, operation, maintenance and repair of the valve please see the full version of the instructions for installation, ope- ration and maintenance of Högfors valves. Prohibited to remove the actuator during transportation, installation and operation. -
Page 4: Transport And Storage
INSTALLATION AND OPERATION MANUAL 31300CS SERIES The valve is delivered with an actuator that has been adjusted at the factory. Prohibited to change the factory settings of the actuator Transport and storage • When receiving the valve, please check that there is no transportation damages. -
Page 5: Hoisting
INSTALLATION AND OPERATION MANUAL 31300CS SERIES Hoisting Please follow the recommended method for hoisting as shown below. Please use soft cable for hoisting. Förbjudet att lyfta ventilen i manöverdonet... -
Page 6: Installation Position
INSTALLATION AND OPERATION MANUAL 31300CS SERIES Installation postition Please do not install the valve in the lowest sections of the pipeline or other places where there is likely to be a concentration of impurities. - Page 7 INSTALLATION AND OPERATION MANUAL 31300CS SERIES The valve can be mounted in horizontal (A), vertical (V) or diagonal (C) pipeline.
- Page 8 INSTALLATION AND OPERATION MANUAL 31300CS SERIES Please place the valve as far as possible from sources of turbulence: pumps, elbows and tees. Minimum Clearances: After the tee or tapping L1 = DN x 3 Before the pump (suction side) L2 = DN x 3...
- Page 9 INSTALLATION AND OPERATION MANUAL 31300CS SERIES Do not install the pipeline support under the valve. If the valve valve is the final item in the pipeline, then a welded plug flange must be installed.
- Page 10 INSTALLATION AND OPERATION MANUAL 31300CS SERIES Recommended position of the valve in the pipeline: 1) shaft horizontally or 2) shaft inclined, but as close as possible to the horizontal position. Vinkel a <45 deg Rekommenderad position Tillåten position Vinkel a <45 deg Tillåten position...
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Page 11: Recommended Mounting
INSTALLATION AND OPERATION MANUAL 31300CS SERIES Recommended mounting When installing with the recommended pipe insertions, which are welded in the workshop, the insertion length is 0.2 - 1.4 meters depending on the DN of the pipeline. 0.2—1.4m Clean the pipes before mounting. -
Page 12: Welding
INSTALLATION AND OPERATION MANUAL 31300CS SERIES Welding Welding surface is covered with a layer of anticorrosion protection. Please remove it prior to welding by using organic solvent, or mechanically. Connect the pipe and the valve together with 4-8 tack welds, depending on the size of the valve DN. -
Page 13: Flushing
INSTALLATION AND OPERATION MANUAL 31300CS SERIES When the valve is mounted in vertical pipeline, cover the valve disk with 100-150mm water cushion. The valve disc must remain in a closed position during the whole welding process. Flushing After installation, please flush the pipeline to remove impurities. -
Page 14: Start Up
INSTALLATION AND OPERATION MANUAL 31300CS SERIES Start-up Use the by-pass valve for filling the pipeline. By-pass valve is required for DN400 and more. The valve disc must remain in closed position until the pipeline is completely filled. The by-pass valve size depends on the lenght of the pipeline. If using too small DN size by-pass valve it will be impossible to fill the pipeline within a reasonable (given) time. -
Page 15: Control Use
INSTALLATION AND OPERATION MANUAL 31300CS SERIES Control use The Högfors valves are suitable for shut-off and for control use. Operating angle range of the disk for control is 10 ˚ - 80 ˚. Flow KV values for the valves and the formula for the flow KV calculation can be found in the product card. - Page 16 INSTALLATION AND OPERATION MANUAL 31300CS SERIES When using the pipeline reduction with the valve position please consider the increased mechanical stresses affecting the valve. Please use additional supports. Pipeline reduction DN size should not be less than 50% of the DN main pipe.
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Page 17: Cavitation
INSTALLATION AND OPERATION MANUAL 31300CS SERIES In operation, the long term use of valve for control may affect the seat tightness class. In order to improve the reliability of the network, please use additonal valve for Shut-off use. 1st valve for control 2nd for shut-off. - Page 18 INSTALLATION AND OPERATION MANUAL 31300CS SERIES If the disk is in the open position by a small angle (0-10 ˚), then before closing it is ne- cessary to open the disk to a larger angle (25 ˚ -30 ˚) for flushing impurities that may have been collected between the disk and the seat.
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Page 19: Valve Operation
INSTALLATION AND OPERATION MANUAL 31300CS SERIES Valve operation Do not use excessive force to rotate the wheel gear. Only 1 person is needed to ope- rate the gear and handwheel. Do not use any tools to operate the valve. Do not try to adjust the actuator settings. - Page 20 INSTALLATION AND OPERATION MANUAL 31300CS SERIES Each manual gearbox and an electric actuator have a mechanical position indicator. Position "OPEN" Position "SHUT“ If the valve is already installed in the pipeline, the approximate position of the disk can be determined by the groove at the end of the shaft.
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Page 21: Troubleshooting
INSTALLATION AND OPERATION MANUAL 31300CS SERIES Troubleshooting Högfors 31300 series. Troubleshooting should be performed only by qualified personnel. Before starting the work, the staff should read carefully and understand the document: “Instructions for installation and operation of Högfors valves”. Contact Högfors representative if you have any questions or need advice. - Page 22 INSTALLATION AND OPERATION MANUAL 31300CS SERIES Trouble Probable cause Solution Malfunction of the actuator. Consult the Högfors representa- tive. Troubleshooting depends Actuator is blocked. on the model of the actuator. Valve can’t be Foreign particles between Consult the Högfors representa- opened.
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