USER MANUAL
Contents
1. System Ready lamp User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 12 Part 5 Six month check To ensure that the system always will function satisfactorily a periodic check programme has to be carried out according to the mentioned procedure After having executed the procedure the individual check programmes are dated and signed for in the enclosed Test Procedure Log Sheet PART 5 1 Visual inspection of N2 H20 cylinder unit EVERY SIX PART 5 2 Check alarms MONTH CHECK x O CHEC PART 5 3 Simulate automatic release of the system from heat detectors PART 5 4 Simulate release of the system from Release Watermist push buttons User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 13 5 1 Visual inspection of N2 H20 cylinder unit Ref drawing no DFF 2108 rev 1 Data Sheet DS 01 7172 1150 1300 and DS 01 6471 0150 Precondition e Report time for inspection to control room e Test Procedure 1 Check that the indication lamps in control panel are OK 2 Check that System Ready indication lamp lit and System Failure does not lit 3 Check that pressure indicator on N gt cylinder is above 140 bar 4 Check that AUTO RELEASE is ON 5 Check that the bursting disc pos 1 on Data Sheet no DS 01 6471 0150 is in place 6 General check of the pipe installation pulse valve2. 3 Part 2 System description The system detailed is our Sem Safe Fire Extinguishing Watermist System for fire fighting of single vat Deep Fat Fryer units General Plant Description See drawing no DFF 2108 HEAT PUSH rev 0 The Sem Safe Watermist System designed for fire protection of the vessels deep fat fryer units listed hereunder is consisting of a separate self contained unit and consisting of 1 H2O and 1 N2 high pressure cylinders The cylinders may be installed in a stainless steel enclosure The system is designed for automatic and manual operation The plant covers the following deep fat fryers located in the mentioned areas Main Galley The Sem Safe Watermist DFF fire extinguishing System is designed for fire protection of deep fat fryer units based on fire extinguishing in deep fat fryer oil with a very fine high pressure water mist The DFF fire extinguishing system is a pressure vessel based system consisting of two high pressure cylinders as a stand alone system as a separate fire section The extinguishing media is freshwater The DFF fire extinguishing system is consisting of the following major items Pressure vessel unit Nz and H2O high pressure cylinders with valves and release unit Sem Safe DFF nozzle heads and pipe system Pulse valve Control unit Release push button Heat detector Alarm indicator Dimensioning of the unit Dimensioning of the system is based from o
3. and nozzles 7 Check that test valve and drain valve are in closed and open position respectively and that the limit switches are working OK 8 Check the leak bleeder valve release indicator cap green is in place i e the system has not been released User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 14 5 2 Check alarms Ref drawing no DFF 2108 rev 1 Data Sheet DS 01 7172 1150 1300 Precondition Report time for inspection to control room e Remove N cylinder release solenoid valve coil Data Sheet DS 01 7172 1150 1300 pos 4 to prevent watermist being released e System in System Ready mode Test Procedure 1 Switch the AUTO RELEASE ON OFF selector switch to OFF position Observe e System Failure indication on the unit enclosure control panel e Indication in SMS Reset the system again by switching the AUTO RELEASE ON OFF selector switch to ON and note that the system return to System Ready mode 2 Simulate N cylinder low pressure alarm by removing the el socket in the contact pressure gauge Observe e System Failure indication on the unit enclosure control panel e Indication in SMS Oo Remount the removed el socket and the system is reset note that the system return to System Ready mode Re establishing the system e Remount N cylinder release solenoid valve coil e Remount the remo
4. in the DFF hood The system can also be emergency released See detailed description in chapter 4 Unit location The Sem Safe Watermist pressure vessel unit control unit and operations should be located outside the protected areas for safe and easy access even during a fire in the protected space galley Nozzle location The SEM SAFE Watermist Deep Fat Fryer nozzle heads are mounted inside the Deep Fat Fryer hoods in an even grid right below the ceiling as show on the examples in the enclosed drawing DFF 2103 The actual position of the nozzles in the individual Deep Fat Fryer hoods are depending of the various sizes of the Deep Fat Fryers and to a certain extend of the actual shaping of the Deep Fat Fryer hoods User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 5 Part 3 Component description Pressure vessel unit N and H20 high pressure cylinders with valves and release unit The pressure vessel unit consists of two high pressure cylinders one cylinder for water and one cylinder pressurised to 145 bar with Nitrogen N2 working as prime mover of the water in the water cylinder Each cylinder is having content of 8 litres The N gt cylinder is fitted with a cylinder normally open shut off valve a contact pressure gauge solenoid valve release unit high pressure flexible hose and a manual release lever When the release of the N cylinder has taken place the N3 is pressing out t
5. mm depth 250 mm height 800 mm Weight of the unit two cylinders in stand by condition including brackets water and N3 is approximately 40 kg User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 6 Controls The DFF control panel can be designed for automatic release from a heat detector placed in the DFF hood and or manual release from Watermist Release push button s or manual release from a release handle at the N2 cylinder The DFF controls are built into a separate enclosure a DFF control box having its own separate control for the DFF fire section The DFF fire extinguishing System is released by operating a Watermist Release push button or automatically from a 150 C heat detector placed in the DFF hood When a Watermist Release push button is pressed or the heat detector has activated a release signal to the control box are set and the N cylinder solenoid valve will open and Watermist is released from the SEM SAFE Watermist Deep Fat Fryer nozzle heads The release of the system will automatically set a signal for the operation of an audible alarm When the DFF fire extinguishing System is released the following outputs from the DFF control box are provided Signal to DFF cut off at WM release potential free signal Signal to ventilation cut off at WM release potential free signal as a pulse signal Signal to Fire damper cut off at WM release
6. on the N gt cylinder placed in the stainless steel unit enclosure User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 10 Note At emergency release of the system ventilation shall be shut down and dampers shall be closed and power to the deep fat fryer should be cut off as far possible After releasing When Watermist to the Deep Fat Fryer once has been released for fire fighting the system should be allowed to run the full fire extinguishing sequence i e the high pressure cylinders should be allowed to be fully emptied If the system is equipped with a test valve it is possible to close for water to the DFF nozzles by manually closing the test valve If the system is equipped with a three position selector switch note this is only for systems having automatic release from a heat detector it is possible to remove operating power from the system solenoids by turning the switch to AUTO position This operation will close the system solenoid N3 release valve and the prime mover N2 to the system is actually stopped However the residual pressure in the water cylinder will for some time still force water out of the nozzles however at a reduced pressure When a fire has been extinguished and the high pressure cylinders are fully emptied the system should be reset Basically this means refilling of the N2 and H20 high pressure cylinders After any release the N cylinder must be replaced
7. or refilled with new nitrogen cylinders of 145 bar pressure in order to reset the unit Any release means that even if the Nz cylinder is not emptied it must be replaced refilled at all times Filling the Nz cylinder with new N can be done at a recognized filling station A cylinder refilling procedure for information may be forwarded upon request For the reassembly disassembling of the N cylinder release unit see data sheet no 01 7172 0003 Re fill the H20 cylinder with de ionizated fresh water as described hereunder See drawing DFF 1710 Water is filled manually through the 1 8 BSP threaded port until water appears from the untied H20 high pressure cylinder outlet fitting Tighten again the H20 high pressure cylinder outlet fitting after the H20 cylinder is full Water supply to the DFF fire extinguishing system is recommended to be filled with de ionizated freshwater If de ionizated freshwater is not available potable freshwater which comply with the EU order 80 778 EEC may be used Restart ventilation when this has been shut off during the release of the system Re establish fire damper when this has been shut off during the release of the system Reset DFF heating element when this has been shut off during the release of the system User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 11 Check that the System Ready lamp indication lights up only automatic systems has
8. potential free signal System released System Failure signal out potential free signal Signal out to close 24VDC solenoid valve 20 sec after WM release 24 V DC out put to Alarm indicator in galley 70MA 24V DC out put to the Nz release solenoid valve 14W Controls for the automatic release and control of the unit as well as System Failure alarm indications with alarms for Low pressure in the N cylinder at falling pressure to 120 bar No power at system System released Auto Release switch in OFF position If the system is equipped with test and drain valve these will also raise an alarm if out of normal standby position When Watermist to the Deep Fat Fryer has been released the high pressure cylinders should allow to be fully emptied The DFF control unit enclosure is made for 24 V DC power supply 50 VA in IP54 protection Calculated power consumption at full load is 2 Amperes Pulse Valve User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 7 The Pulse valve is a normally open directional high pressure electrically operated solenoid valve The Pulse valve is normally open and allows for water to the main DFF nozzles A timer automatically closes for the Pulse valve 15 seconds after release of the system after the fire has been extinguished hereafter only the cooling DFF nozzle is active impeding the DFF oil to
9. shut off during the release of the system Reset DFF heating element when this has been shut off during the release of the system Part 6 Spare Parts User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 17 Enclosed to this paragraph is our recommended List Of Spare Parts however no Spare Parts are included in the order User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 18 Part 7 Drawings LIST OF DRAWINGS Draw no Rev Description DFF 2108 1 DFF FIRE EXTINGUISHING SYSTEM DFF 2103 O NOZZLE INSTALLATION DFF 1708 0 DEEP FAT FRYER NOZZLE 27 DFF 1709 O DEEP FAT FRYER NOZZLE 36 DFF 1710 0 ADAPTER FOR H20 CYLINDER DFF DFF 2602 A__ PUSH BUTTON 10003765 _ SET OF ELECTRICAL DIAGRAM REV 17 6 2003 User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 19 Part 8 Component List Enclosed to this paragraph is the Component List User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 20 Part 9 Component Data Sheets LIST OF DATA SHEETS Data Sheet no Description 1 2 3 4 5 6 6A SOLENOID VALVE PULSE VALVE T 8 10 11 COLSON VALVE 12 13 14 15 HEAT DETECTOR 16 17 18 19 20 21 2
10. 2 AUDIBLE ALARM IN 01 7172 0004 RELEASE UNIT FOR VALVE DS 01 7172 1150 RELEASE UNIT GAUGE NORMALLY CLOSED VALVE DS 15 8020 0007 CONTACT PRESSURE N C DS 01 3273 0140 FLEX HOSE 4 400 mm DS 01 3272 0180 HI FLEX HOSE 4 FOR PILOT LINE 450 mm DS 15 8240 0037 SOLENOID VALVE DS 01 6471 0150 PNEUMATIC ARGONITE VALVE DS 01 3388 0000 LEAK BLEEDER UNIT PRESSURE SWITCH 26A BRACKETS FOR CYLINDERS 26 CYLINDERS 8 L User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 21 HORN OPTION 24 VOC SKB a einen STOP SAT DYAN DFF HEATER MANUEL RELEASE AFSPERFINESVENTL H NDIKATOR OPTADO USES 1 SEEN MUINA pa TEBTVENTIL N POB INDIKATDA OPTION L SES LUKKET STILLING KAROR WK FILTER FALDENDE TRAK 100 User Manual Issue no 1 20 September 2003
11. Fat Fryer nozzle heads are made in brass with a strong pewter nickel alloy surface treatment giving the nozzle head a stainless steel look The Watermist micro nozzles are made in stainless steel AISI 316 and are of the same type as the SEM SAFE Watermist nozzles used in all our SEM SAFE Watermist Systems Total amount of SEM SAFE Deep Fat Fryer nozzle heads included are 3 User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 9 Part 4 System Activation and Re establishing Activation of the system The DFF system is designed for automatic release from a heat detector placed in the DFF hood and or manual release from a Watermist Release push button The system can also be emergency released from a manual release handle at the N cylinder For automatic activation the system receives an incoming signal from a heat detector placed locally in the deep fat fryer hoods which automatically will release watermist to the dedicated deep fat fryer In case of a fire a signal provided by the locally placed heat detector will be transferred to the PLC in the control panel The PLC operates N2 solenoid release valve and the dedicated section valve and provides a signal for the Safety Management System as well as a signal to shut down the exhaust fan for the actual room galley hood A facility for switching OFF automatic activation mode is established In the front of the unit con
12. SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 1 TABLE OF CONTENTS Part 1 Design data Page 2 Part 2 System Description Page 3 Part 3 Component Description Page 5 Part 4 System Activation and Re establishing Page 9 Part 5 Six Month Check Page 12 Part 6 Spare Parts Page 17 Part 7 Drawings Page 18 Part 8 Component List Page 19 Part 9 Component Data Sheets Page 20 Part 1 Design data User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 2 Supply Voltage 24 V DC UPS Power consumption 50 VA Initial operation pressure at nozzle heads 145 bar decreasing Test pressure 218 bar Unit capacity 1 unit consisting of H20 cylinders 1 pc containing 8 1 N gt cylinders 1 pc containing 8 1 145 bar Nozzle nominal capacity 2 x Main nozzle type DFF 36 each k factor 0 47 1 x Main cooling nozzle type DFF 27 each k factor 0 28 System water capacity 8 litres Water quality required De ionizated freshwater is recommended However potable freshwater may be used Potable water which comply with the EU order 80 778 EEC Tf the system is for Lloyds Register classification the system has to be filled with de ionizated water under all circumstances Therefore it has to be controlled by each check that fresh water sea water has not been filled into the system User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page
13. e programmed the system PLC control to release the system automatically by activation from a heat detector s We have based the fire detection system for the automatic release from heat detectors only dedicated to the individual objects Deep Fat Fryers protected We have used Salwiko SWM 1KL 150 heat detectors in IP 67 The signal from an activated heat detector is controlled in the PLC and this signal is treated to give a signal to release the dedicated section That is if a heat detector dedicated to an object activates the N cylinder release solenoid valve and the dedicated section solenoid valve opens and the Watermist system is released We suggest the following coverage with heat detectors of the respective objects protected For each of the Deep Fat Fryers we would place one heat detector placed centrally above the fryer in the Deep Fat Fryer hood Where more than one heat detector covers an object these are to be connected in parallel Sem Safe Watermist Nozzles See drawing no DFF 1708 rev 0 and DFF 1709 rev 0 and DFF 2103 rev 0 The SEM SAFE Deep Fat Fryer nozzle heads are of open nozzles type DFF Nozzle 27 one main and one cooling micro nozzle in same nozzle head to be mounted in the centreline above the Deep Fat Fryer DFF Nozzle 36 two main micro nozzles in same nozzle head to be mounted in line with the fryer ends max 375 mm from the centreline above the Deep Fat Fryer The SEM SAFE Deep
14. he water in the water cylinder to the SEM SAFE DFF Watermist nozzles The pressure in the system will reduce gradually as the system is using water until the cylinders are emptied A pressure gauge is mounted on the N cylinder and a pressure switch controls the pressure in the cylinder If the cylinder for some reason should lose pressure an alarm is raised to the control system The H20 cylinder is mounted with a cylinder adaptor and discharge pipe The fresh water and nitrogen cylinders are interconnected via a 6 mm stainless steel pipe Further the system is equipped with a feed back pressure switch mounted in the system after the H20 cylinder water outlet The feed back pressure switch is activating when the system is released The pressure vessel system can also be made with a service valve and a drain valve for testing and service purposes This is an option that can be chosen and is not standard The unit automatically releases in the case a fire is detected in one of the Deep Fat Fryers When the system is activated the N cylinder solenoid valve opens and nitrogen pressure will via the 6 mm pipe connecting the two cylinders be directed into the fresh water cylinder and subsequently press out the water to the discharge pipe and further to the DFF section s The system can also be manually released by operating the release handle on the N gt cylinder The unit overall dimensions are approximately length 400
15. re ignite The Pulse valve made in stainless steel is supplied loose for installation into the pipe system Alarm indicator An audible alarm indicator for mounting inside the galley is supplied The alarm indicator will activate when the system is released The alarm indicator is for 24VDC supply 70mA and has a high sound out put of 102 dB A the sound signal can be changed for 11 different signals Pipe System The pipes and necessary fittings are supplied in stainless steel AISI 316 and the pipes are to be joined by compression fittings The cutting ring fittings are of DIN 2353 standard ISO 8434 1 The main pipeline size and length is determined by the calculated pressure drop Normally pipe dimensions of 015 0 x 1 5 mm or 10 0 x 1 0 mm are installed The main pipeline is branched into a distribution pipeline normally O 6 0 x 1 0 mm installed right above the Deep Fat Fryer The Sem Safe Watermist nozzles are connected to the distribution line with 6 mm compression fittings The pipes are to be installed in noise and vibration free heavy duty pipe hangers for supporting the tubes with approx 1 5 metres interval Necessary stainless steel pipe AISI 316 and compression fittings are supplied All pipes are supplied with 3 1 B certificate Heat detectors for automatic activation User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 8 For automatic systems only We hav
16. trol panel an AUTO RELEASE switch in built in The switch has three positions AUTO RELEASE ON and OFF and AUTO When in ON the system can be released automatically from the heat detectors and from the locally placed Watermist Release push button s When in OFF the system can only be released from the locally placed Watermist Release push buttons or from the emergency release lever on the N gt cylinder When the AUTO RELEASE switch is left in OFF position an alarm will be raised System Failure If the switch is in AUTO position operating power is removed from the system solenoids and the prime mover Na to the system is actually stopped However the residual pressure in the water cylinder will for some time still force water out of the nozzles however at a reduced pressure Manual activation In case of a fire the system is manually operated by pressing a Watermist Release push button locally placed outside the protected space By pressing this Watermist Release push button the system is set in operation immediately Watermist is released from the SEM SAFE Watermist Deep Fat Fryer nozzle heads For emergency activation of the system in case of an error in the operation system the section valves can be emergency operated by opening the by pass valve built in each section valve and by manually operating pulling the emergency release lever
17. ur Deep Fat Fryer performance tests carried out at the Danish Institute of Fire and Security Technology DIFT in March 2003 The system is tested in accordance with the ISO 15371 2000 standard Dimensioning of the system is based on protection of one deep fat fryer single vat The system capacity is 8 litres and designed to provide water to the DFF nozzles for fire protection in approximately 10 minutes User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 4 The water consumption for one single vat deep fat fryer is 8 litres freshwater in approximately 10 minutes Extinguishing times and capacities required for split vat deep fat fryer units and multiple vat deep fat fryer units are different from single vat deep fat fryer units Power supply The DFF control unit is designed for a24 V DC 50 VA power supply The power supply is provided from the vessel Water supply The H20 high pressure cylinder 8 litres is recommended to be filled with de ionizated freshwater after any release Water supply to the DFF fire extinguishing system is recommended to be filled with de ionizated freshwater If de ionizated freshwater is not available potable freshwater which comply with the EU order 80 778 EEC may be used Activation of the system The DFF system is designed for manual operation activating a Watermist release push button and for automatic operation from a heat detector placed
18. ut off during the release of the system Reset DFF heating element when this has been shut off during the release of the system User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 16 5 4 Simulate release of the system from Release Watermist push button s Ref drawing no DFF 2108 rev 1 and Data Sheet DS 01 7172 1150 1300 Precondition Report time for inspection to control room e Remove N cylinder release solenoid valve coil Data Sheet DS 01 7172 1150 1300 pos 4 to prevent watermist being released e System in System Ready mode e Check that AUTO RELEASE is ON Test Procedure 1 Simulate release of the system from a Release Watermist push button Observe FIRE indication on the unit enclosure control panel That the N solenoid valve pulls That the solenoid pulse valve closes pulls after 15 seconds That the dedicated ventilation fan stops That the dedicated fire damper shuts down Alarm indicator in the galley sounds That the dedicated deep fat fryer shuts down The system is reset note that the system return to System Ready mode Carry out the test over again for all the individual Release Watermist push buttons Re establishing the system Remount N cylinder release solenoid valve coil Restart ventilation when this has been shut off during the release of the system Re establish fire damper when this has been
19. ved el socket User Manual Issue no 1 20 September 2003 SEM SAFE DEEP FAT FRYER WATERMIST SYSTEM Page 15 5 3 Simulate automatic release of the system from heat detectors Ref drawing no DFF 2108 rev 1 and Data Sheet DS 01 7172 1150 1300 Precondition e Report time for inspection to control room e Remove N cylinder release solenoid valve coil Data Sheet DS 01 7172 1150 1300 pos 4 to prevent watermist being released e System in System Ready mode Check that AUTO RELEASE is ON Test Procedure 1 Simulate automatic release of the system from a random selected heat detector Carefully slowly heat up the heat detector to just above 150 C Alarm horn will activate Observe FIRE indication on the unit enclosure control panel That the N solenoid valve pulls That the solenoid pulse valve closes pulls after 15 seconds That the dedicated ventilation fan stops That the dedicated fire damper shuts down Alarm indicator in the galley sounds That the dedicated deep fat fryer shuts down When the heat detector again has cooled down the system is reset note that the system return to System Ready mode Carry out the test over again for all the individual heat detectors Re establishing the system Remount N cylinder release solenoid valve coil Restart ventilation when this has been shut off during the release of the system Re establish fire damper when this has been sh
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