Switch Block Manual
Contents
1. TECHNICAL SUPPORT SWITCH BLOCK VALVE APO281 APO281 G and 1 0281 5 OWNER AND MAINTENANCE MANUAL Issue 2 Document No AP2549 16 07 2015 APEKS MARINE EQUIPMENT LTD NEPTUNE WAY BLACKBURN LANCASHIRE BB1 2BT Tel 44 0 1254 692200 Fax 44 0 1254 692211 E mail info apeks co uk Web www apeks co uk Switch Block Manual AMENDMENTS RECORD Amendments and approval of this document can only be carried out by the relevant people listed on the Approved list of signatures which is listed in the Apeks Quality Manual To instigate a change a Task Change request form Form No DESI 10002 must be completed and passed to the relevant person s for approval which are listed on the Approved List of Signatures When approval has been granted and recorded this table can then be completed and the document up issued Change Change Description amp Comments Change Date New Changed Approved No Request No Issue By By No 1 1454 Teeth removed from parts AP3052 16 07 2015 2 CT L H AP3060 2 1442 Spring AP4012 added to Switch Block 16 07 2015 2 CT LH Retaining Nut AP8021 modified to accommodate new spring COPYRIGHT NOTICE This manual is copyrighted all rights reserved It may not in whole or in part be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form without prior consent in writing from Apeks Marine Equipment Ltd It2. Unscrew shaft 7 from gland nut 5 counter clockwise by hand Holding shaft turn gland nut counterclockwise Keep safe for re assembly Switch Block Manual Caution Take care when handling the shaft 6 not to cause damage to the face side Remove O rings 4 and 6 from gland nut 5 using O ring removal tool Caution When removing O ring 4 be careful not to damage internal bore of gland nut Disassembl for the Switch Block is Now Complete Switch Block Manual Assemblv Procedures for the 7 Press the spring 2 onto the retaining nut 1 Secure the handwheel 3 with the retaining nut 1 using an 8mm Switch Block allen key to 5Nm 44in lbs of torque 1 Insert the lightly greased O ring 4 into the internal O ring groove inside the gland nut 5 Caution Ensure ring is fully captured in groove and sat flat 8 Put the O ring 13 Fit O ring 6 over the external thread of the gland nut 5 down to over the 3 8 thread on the 3 8 hose adapter 9 the external O ring groove 9 Screw the hose adapter 9 into the 3 8 port labelled BAILOUT INLET and tighten using a 5mm allen key to 5Nm 44in lbs of torque 3 Lightly grease the shaft 7 and insert into the gland nut 5 rotating slightly to prevent damage to the internal O ring 4 4 Engage thread and turn until the shaft shoulder is touching
3. VALVE INLET EEEE ALTERNATE ROUTING FOR OR ELNET EE eave HELMET BAILOUT SUPPLY 2 23654351 PSI SUPPLY SUPPLY 22 PRESSURE RELIEF VALAVE HELMET 2 BAILOUT Be SUPPLY OUT PORT NOT USED IN THIS CONFIGURATION a eee MEDIUM BAILOUT V NE 7 PRESSURE INET J HAND WHEEL REMOVED FOR ILLUSTRATION PURPOSES PORT NOT USED IN THIS CONFIGURATION CONSTANTLY PRESSURISED apexs Configuration of APO281 G Switch Block G3000SS Switch Block Manual E NOTE These images were taken prior to the Switch Block Mount modification The images are for demonstration purposes only and all new Mounts will not have teeth on the plates AP0281 G Switch Block used in bailout configuration with Aqua Lung Gorski G3000SS Diving Helmet Mounted on Aqua Lung H3 Diving Harness Diver wearing Aqua Lung HAZMAT dry suit 12 apexs Configuration of APO281 and 281 5 Switch Block Manual switch Block HELMET OR FULL FACE PRIMARY MASK SUPPLY UMBILICAL e 232 300 BAR a 3365 4351 PSI CYLINDER BAILOUT HELMET FFM HELMET FFM SUPPLY SUPPLY SUPPLY OR AUXILIARY PRESSURE RELIEF VALAVE NON RETURN VALVE 20 V 14 uL lt y AUXILIARY SUIT INLET INFLATION ADAPTER 8600 5b MEDIUM PRESSURE BAILOUT HAND WHEEL REMOVED FOR ILLUSTRATION PURPOSES AUXILIARY SUIT INFLATION CO
4. the gland nut 10 Wind PTFE sealing tape a minimum of 2 3 times around the 1 2 NPT male thread of either the 1 2 NPT adapter AP3051 11 or the check valve AP3057 11 depending on which configuration is being assembled NOTE Start winding the PTFE tape 1 thread back from the end and wind counter clockwise under slight tension regardless of which system you are using Image 10 is the APO282 G valve using the AP3051 1 2 NPT adapter for illustration purposes See page 18 for 5 Screw the shaft gland nut sub assembly all the way into the top turret of the main body 8 using a 7 8 spanner to 12Nm 106in Ib of torque 6 Place handwheel 3 over shaft ensuring the square 0282 version 1 11 Hand tighten the adaptor 11 using a 3 4 spanner Moderate resistance is required Switch Block Manual 12 Fit O ring 13 over the thread on blanking plug 12 Check Valve Disassembly for AP0282 Version 1 Unscrew inlet adapter counter clockwise using 7 8 spanner 13 Screw blanking plug 12 into hose adapter 11 and hand tighten using a 5mm allen key to 5Nm 44in lbs of torque 2 Unscrew check valve 11 counter clockwise using 7 8 spanner 14 Repeat operation 12 to remaining blanking plugs if in use then fit to empty ports tighten using 5mm allen key to 5Nm 44in Ibs NOTE Two 7 8 spanners may be needed if inlet adapter
5. and check valve unscrew as one Use first spanner to hold check valve as inlet adapter is unscrewed by second spanner NOTE Remove all P T F E seal tape Check Valve Assembly for AP0282 Version 1 tighten the check valve 11 using 3 4 spanner Moderate resistance is required Assembly Procedure for the Switch Block is Now Complete A Leak Test is Now Required See Page 19 2 Hand tighten the inlet adapter using a 3 4 spanner Moderate resistance is required NOTE Refer to page 17 operation 10 for P T F E seal tape fitting CE NOTE Refer to page 6 for inlet adapter types 20 Switch Block Test Procedure 4 Attach 3 8 medium NOTE To perform the test on the switch block an air supply is required Illustrated is a test bench supply a cylinder can be used as an alternative Supply pressure needs to be between 9 0 and 10 0 Bar 130 145 psi 1 Remove one of the 3 8 blanking plugs 2 Attach a 9 16 medium pressure regulator hose to the bailout inlet fitting Hand tighten with 11 16 spanner 3 Ensure handwheel is in the closed position on the Switch Block Slowly turn on air supply then slowly open Switch Block valve an audible gas flow should be present Close Switch block handwheel Lor NOTE If theres no gas flow check gas supply If supply has no faults check Switch Block for blockages debri 3 Submerge Switch Block and allow trapped a
6. assembly and lubricate shaft 2 Shaft bent Disassemble the shaft sub assembly and replace shaft unevenly i e cork screws Switch Block Manual Table 2 Recommended Tool List PART NO DESCRIPTION APPLICATION 3 4 Spanner 1 2 Adaptor and Check Valve 3 8 Hose Adaptor and Blanking Plugs AT35 8mm Allen Key Retaining Nut P T F E Sealing Tape Teflon Sealing 1 2 Adaptor and Check Valve 25 Switch Block Manual Cleaning and Lubrication Procedure Cleaning Brass and Stainless Steel Parts 1 If required pre clean in warm soapy water using a nylon bristle tooth brush 2 Thoroughly clean parts in an ultrasonic cleaner filled with a solution of household white distilled vinegar Acetic Acid mixed with fresh water max 5096 vinegar Clean ultrasonically for 5 minutes max 10 minutes DO NOT place plastic rubber silicone or anodized aluminium parts in vinegar 3 Remove parts from the ultrasonic cleaner and rinse with fresh water If tap water is extremely hard place the parts in a bath of distilled water to prevent any mineral residue Agitate lightly and allow to soak for 5 10 minutes Remove and blow dry with low pressure 25 PSI 1 7Bar filtered air Inspect closely to ensure proper cleaning and like new condition Cleaning Plastic amp Rubber Parts Parts made of plastic or rubber may be soaked and cleaned in a solution of warm water mixed with mild dish soap Use
7. fluid for Biox LTD Cleaning agent reusable stainless steel and brass 52 Hughenden Avenue parts White distilled vinegar 100gr Acid bath ultrasonic cleaner for Household grade Cleaning agent reusable stainless steel and brass parts CAUTION Do not use muriatic acid for the cleaning of any parts Even if strongly diluted muriatic acid can harm chrome plating and may leave a residue that is harmful to o ring seals and other parts Liquid dish washing detergent diluted Degreaser tor stainless steel anc Household grade with warm water brass parts general cleaning solution Cleaning agent for plastic and rubber 27 apexs Switch Block Manual Table 4 Torque Specifications PART NUMBER DESCRIPTION KEY NUMBER TORQUE AP8021 Retaining Nut M5 Switch Block 5Nm 44in lbs AP3048 Gland Nut Switch Block 12Nm 106in lbs AP1408 3 8 UNF Blanking Plug 5Nm 44in Ibs AP3050 Adapter 3 8 UNF Hose 5Nm 44 165 AP3056 screw M4 x 10 CSK A2 1Nm 8 85in Ibs Table 5 Test Bench Specifications CONDITION ACCEPTABLE RANGE High Pressure gt 200 Bar Gauge Int I Ext Leak ped No Visual Leaks Allowed nternal External Lea Med Pressure 9 5 0 5 Bar o Visual Leaks Allowe 137 7 psi 28 Switch Block Manual AP0282 G Switch Block Valve G3000SS Exploded Parts Diagram AP3046 Body Switch Block AP8021 Retaining Nut M5 Switch Block i s 13 B
8. may not be distributed through the internet or computer bulletin board systems without prior consent in writing from Apeks Marine Equipment Ltd 02013 Apeks Marine Equipment Ltd Commercial Switch Block Owners and Maintenance Manual 16 07 2015 Issue 2 INTRODUCTION This manual provides factory prescribed procedures for the correct use installation and maintenance of the Apeks AP0281 AP0281 PS and AP0281 G Switch Blocks GENERAL GUIDELINES 1 In order to correctly perform the procedures outlined in this manual it is important to follow each step exactly in the order given Read over the entire manual to become familiar with all procedures and to learn which specialty tools and replacement parts will be required before commencing disassembly Keep the manual open beside you for reference while performing each procedure Do not rely on memory 2 All service and repair should be carried out in a work area specifically set up and equipped for the task Adequate lighting cleanliness and easy access to all required tools are essential for an efficient repair facility 3 Before beginning any disassembly it is important to first perform the initial inspection procedure Refer to Table 1 Troubleshooting Guide in the back of the manual to determine the possible cause of any symptoms which may be present 4 As each unit is disassembled reusable components should be segregated and not allowed to intermix with non reusable p
9. only a soft nylon toothbrush to scrub away any deposits Rinse in fresh water and thoroughly blow dry using low pressure filtered air Do not place plastic and rubber parts acid solutions Doing so may alter the physical properties of the component causing it to prematurely degrade and or break Lubrication and Dressing All O rings should be lubricated with Christo Lube MCG 111 or PerFluoroLube 20 1 Dress the O rings with a very light film of grease and remove any visible excess by running the O ring between thumb and forefinger Avoid applying excessive amounts of lubricant as this will attract particulate matter that may cause damage to the O ring Soapy water is defined as household grade liquid dishwashing detergent diluted in warm water 26 Switch Block Manual Table 3 Recommended Lubricants amp Cleaners Christo Lube MCG 111 All O ring seals Lubrication Technologies Lubricant 310 Morton Street Jackson OH 45640 USA 800 477 8704 or Apeks Marine Equipment Ltd PN AP1495 PerFluoroLube 20 1 Lubricant All O ring seals Performance Fluids Suite 101 Lomeshaye Buisness Park Turner Road Nelson Lancashire BB9 7DR CAUTION Silicone rubber requires no lubrication or preservative treatment DO NOT apply grease or spray to silicone rubber parts eg Diaphragm Exhaust Valves Doing so may cause a chemical breakdown and premature deterioration of the material Biox Biological immersion
10. years With heavy use in contaminated water it is recommended to service the Switch Block Valve more regularly In some contaminated water it may be preferable to replace the seals after every use and this should be determined via risk assessment Switch Block Manual WARNING This manual provides essential instructions for the proper setup inspection use and care of your new switch block It is very important to take time to read these instructions in order to understand and fully utilize the function and safety features of the Apeks Switch Block Improper use of your switch block could result in serious injury or death SAFETY INFORMATION Before using this Switch Block you must receive instruction and certification in surface supplied full face mask helmet diving from a recognised training agency Use of this equipment by uncertified or untrained persons is dangerous and can result in injury or death A WARNING Do not dive with a surface umbilical gas supplied full face mask or helmet without a bailout emergency gas supply Theumbilical gas supply system must be equipped with a non return valve check valve This is to prevent a squeeze and possible catastrophic loss of the divers breathing air should the surface umbilical supply fail Without this valve the diver will suffer serious injury or death The bailout supply first stage regulator must be fitted with a pressure relief valve in a LOW PRE
11. 0 and Switch Block and Mount is secure CAUTION Ensure the bailout first stage regulator is set between 9 0 10 0 bar 130 145 psi Close the Switch Block valve by turning the hand wheel clockwise until it stops hand tight CAUTION Do notovertighten the hand wheel this may damage the valve seal and or seat and the Switch Block will have to be serviced or even discarded Open the bailout cylinder valve and isolate the surface supply e Open the Switch Block valve briefly and listen for the flow of gas If no gas flow is heard check the cylinder valve is open and or the hoses for blockages If there is still no gas flow remove the Switch Block and bailout gas system and have it serviced or replaced Diving e n case of umbilical air supply failure open Switch Block valve fully by turning the hand wheel anticlockwise until it stops WARNING The bailout cylinder only allows the diver a few minutes of air and he must immediatley return to the surface or to a place of safety o Close Switch Block valve when not in use J N CAUTION Always keep the bailout hose pressurised after test and make sure the bailout switch is closed 10 apexs Configuration of 0281 6 Switch Block G3000SS Switch Block Manual SURFACE GAS SUPPLY od j ee P f E al r a j LA 4 r j 9 nm j T EI j G3000SS HELMET Las NON RETURN 5 NON RETURN i
12. 18 9 16 i e SCUBA MP hose fitting AP2542 3 8 NPT 18 9 1602 AP2543 3 8 18 G1 4 ape Kx u Switch Block Manual AP0281 PS Switch Block Comprises of AP0282 AP0283 Switch Block Switch Block Valve Mount AP2541 1 x Bailout inlet port with 3 8 hose adaptor male 4 x Standard 3 8 outlet ports 1 x 1 2 NPT port this is a dual use port Inlet for primary air supply using check valve and inlet adapter version APO281 1 x inlet adapter AP2541 3 8 NPT 18 9 16 i e SCUBA MP hose fitting apexs Switch Block Manual AP0281 G Switch Block Comprises of AP0282 G 0283 Switch Block Switch Block Mount Valve 1 x Bailout inlet port with 3 8 hose adaptor male 4 x Standard 3 8 outlet ports 1 x 1 2 NPT port this is a dual use port Outlet for bailout supply using MP hose version AP0281 G NOTE The main difference is the non return check valve AP3057 is not fitted to the AP0281 G configuration because it is fitted to the Aqua Lung G3000SS Diving Helmet apexs AP0283 Switch Block Mount Fitting The Switch Block Mount is designed to fit onto most harnesses Thread the end of the webbing through one of the slots in the mounting plate then through the other Slide the back plate to the desired position in either position 1 or 2 as the preferred position in commercial diving is on the right hand side Bolt the back plate to the underside of the Switch Bloc
13. NSTANTLY PRESSURISED CE NOTE The AP0281 AP0281 PS have not received CE certification 13 apexs Switch Block Manual Configuration of AP0281 and 281 5 owitch Block AP0281 also APO281 PS Switch Block used with FFM in lightweight surface supply configuration with umbilical primary air supply and bailout cylinder Mounted on Aqua Lung H3 Diving Harness Diver wearing Aqua Lung HAZMAT dry Suit NOTE These images were taken prior to the Switch Block Mount modification The images are for demonstration purposes only and all new Mounts will not have teeth on the plates 14 Switch Block Manual Cleaning Remove Switch Block valve from the harness mounting Wash both valve and harness with clean water use warm water if possible if diving in water 5 or less Ensure all dirt and debris has been removed from in and around the spring and button on the harness mounting and under the valve Switch Block hand wheel Check that the hand wheel turns smoothly and free Check the button on the harness mounting operates smoothly Clean again if necessary Inspection Inspect the rubber parts plastic parts and non return valves at regular intervals and have them replaced if there are any signs of damage or wear See page 2 for scheduled service details otorage The Switch Block should be dried and stored in a cool and dry location All service parts including rubber and plastic components shou
14. OTHER COUNTRIES DO NOT ALLOW EXCLUSIONS OR LIMITATIONS OF LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THIS MAY NOT APPLY TO YOU Restrictions The following restrictions apply to this warranty This warranty does not cover normal wear Factory prescribed service by an authorised dealer is required at least once annually This warranty does not extend to damages caused by improper use improper maintenance neglect unauthorised repairs modifications accidents fire or casualty Cosmetic damage such as scratches dents and nicks are not covered by this warranty Switch Block Manual MAINTENANCE SECTION 5 6 Disassembly Procedures for the Switch Block Unscrew all UNF blanking plugs 12 using 5mm allen key Remove O ring s 13 from blanking plug s using O ring removal tool Unscrew adapter 8 using 5mm allen key Remove O ring 13 using O ring removal tool Unscrew adapter 11 using 3 4 spanner NOTE AP3051 1 2 NPT adapter is being used for illustration purposes Remove seal tape Caution Remove all traces of P T F E tape from threads prior to cleaning Any traces left on threads can prevent the new application of tape adhering correctly in assembly 18 Holding cylinder valve hand wheel 3 and using 8mm allen key remove retaining nut 1 and spring 2 Slide cylinder valve hand wheel away from shaft 7
15. SSURE port Switch Block Manual Description The Apeks Switch Block can be used with any diving full face mask or helmet with a Medium Pressure i e less than 16 bar 232 psi air supply The switch block allows the diver to switch from the primary air supply to an alternate bailout air supply or Emergency Gas Supply EGS in case of failure of the primary supply The primary supply may be a surface supply umbilical or SCUBA cylinder The switch block is attached to the divers s harness in an easily accessible location so the diver can open the Switch Block valve unaided and in nil visibility conditions AP0281 G Switch Block only has been CE certified by DNV GL Det Norske Veritas Germanischer Lloyd SE Brooktorkai 18 20457 Hamburg Germany Notified Body number 0098 and has been found to be in accordance with the requirements of Council Directive 89 686 EEC When examined the product satisfied the requirements of the manufacturer s technical specifications based upon BS EN 153333 requirements which has been previously assessed and deemed to meet the basic health and safety requirements Annex II of the directive The CE certified depth of 50 m 165 ft is a standard maximum certification depth for diving equiupment that is used to provide a uniform benchmark for measuring performance Apeks Switch Block is available in 3 versions configurations 1 0281 6 For use with the Aqua Lung Gorski G3000SS divin
16. Trouble Shooting Guide Air leakage 1 Valve hand wheel not tight enough Hand tighten the hand wheel 2 Shaft seat sealing surface damaged Disassemble the shaft sub assembly and replace shaft from open outlet port Valve closed 3 Valve body seat sealing surface damaged Replace switch block valve 4 Debris trapped under valve seat seal surface Blow air through the switch block to dislodge debris or disas semble shaft sub assembly to remove debris 5 Excessively high bailout supply pressure Inspect 1 stage on bailout cylinder set pressure to 130 5 137 7 psi 9 9 5 bar Remove 15 stage have serviced by a qualified technician 6 Valve seat loosened off shaft Disassemble the shaft sub assembly and replace shaft Air leakage 1 PTFE tape not sealing 3 8 NPT port and adaptor Remove NPT adaptor and reapply tape as per service manual instructions from closed outlet port s Valve open 2 Bailout inlet leaking Remove adaptor inspect O ring and replace if damaged 3 Leaking out of hand wheel Disassemble the shaft sub assembly inspect O rings and shaft for damage or wear and replace where necessary 4 All other 3 8 UNF outlet ports leaking Remove blanking plugs inspect O ring and replace if dam aged 5 Excessively high bailout supply pressure Inspect 1 stage on bailout cylinder set pressure to 130 5 137 7 psi 9 9 5 bar Remove 15 stage have serviced by a qualified techni
17. arts or parts from other units Delicate parts including valve shaft and valve seats which contain critical sealing surfaces must be protected and isolated from other parts to prevent damage during the cleaning procedure 5 Use only genuine Apeks parts provided the service kit 6 Do not attempt to reuse mandatory replacement parts under any circumstances regardless of the amount of use the product has received since it was manufactured or last serviced 7 When reassembling it is important to follow every torque specification prescribed in this manual using a calibrated Newton Meter torque wrench Most parts are made of either marine brass or plastic and can be permanently damaged by undue stress Switch Block Manual WARNINGS CAUTIONS amp NOTES Pay special attention to information provided in warnings cau tions and notes that are accompanied by one of these symbols WARNINGS indicate a procedure or situation that may result in serious injury or death if instruc tions are not followed correctly AN CAUTIONS indicate any situation or technique that will result in potential damage to the product or render the product unsafe if instructions are not followed correctly E are used to emphasise important points tips and reminders SCHEDULED SERVICE It is recommended that the Apeks Switch Block should be examined annually regardless of useage A full service should be performed every two 2
18. cian Hand wheel 1 Excess dirt and debris jammed Disassemble the shaft sub assembly and clean amp service switch block 2 Shaft Gland nut thread failure 1 Excess PTFE sealing tape interfering with check valve poppet 2 Salt or debris build up Replace shaft gland nut and O rings Check Valve not opening fully Remove check valve and reapply tape as per service manual instructions Remove adaptor and clean inside check valve with fresh 0281 water configuration 3 Inner Corrosion Remove check valve inspect inside and replace Check Valve not closing 1 Excess PTFE sealing tape interfering with check valve poppet 2 Salt or debris build up 3 Inner Corrosion Remove check valve and reapply tape as per service manual instructions AP0281 Remove check valve and clean with fresh water configuration Replace check valve 4 O ring failure Replace check valve Shaft unable to 1 Over tightening hand wheel nut be removed from gland nut Button jammed Button free 1 Button spring broken or corroded 2 Button spring gone Hand Wheel meets 1 Shaft dry resistance when turning or turns Remove shaft assembly and replace shaft gland nut and O rings 1 Excess dirt and debris or salt Remove from harness Wash with high pressure fresh water Unscrew base from front plate remove button and spring then clean with fresh water Replace spring Replace spring Disassemble the shaft sub
19. e 1 Push the button 2 to ensure correct fit and ease of movement 2 Unthread webbing through slots in plate mount 5 T Place the base assembly face down and lay the plate 5 on top lining up the screw holes Ensure slot back reveals the spring and counter sunk holes are facing upwards 3 Unscrew the 6 remaining screws 6 from the plate mount 5 using a 2 5mm allen key 8 Fitthe 6 screws 6 using i a 2 5mm allen key to a torque value of 1Nm 0 741 4 The base 1 will now be free from the plate mount 5 9 Thread the webbing from the intended harness through the 2 slots in the plate 5 S NOTE Refer to page 9 for full fitting instructions 5 Remove the button 2 and spring 3 from the base 1 carefully to ensure the spring 3 is not lost 10 Place the back plate 7 on the rear side of the plate assembly lining up the screw holes Fit one of the screws 6 through the countersunk side of the back plate 7 and hold in place Fit a nut 4 to the extruding thread of the screw and finger tighten Perform this operation for the remaining 3 screws Disassembly for the Switch Block Mount is Now Complete 22 11 Fully hand tighten the four screws and nuts using a 2 5mm allen key and 7mm spanner using moderate force Assembly for the Switch Block Mount is Now Complete 23 Switch Block Manual Switch Block M Table 1
20. g helmet See Note 2 AP0281 For use with other full face masks and diving helmets This general use version has a non return check valve i e one way valve and various inlet adapters for use with a primary air supply e g surface supply umbilical gas hose or cylinder 3 AP0281 PS For Public Safety diving It is the same as the 281 but with a single commonly used inlet adapter The main difference is the non return check valve AP3057 is not fitted to the AP0281 G configuration because it is fitted to the Aqua Lung G3000SS Diving Helmet owitch Block operating configurations are shown on pages 11 to 14 An optional Flow Restrictor 730 is available for use whenever suit inflator hose is fitted to one of the Switch Block MP outlet ports WARNING An in line flow restrictor must be used with a suit inflator hose in order to reduce the escaping air flow and to preserve the divers s breathing air supply in the event of inflator hose malfunction AP2540 AP2541 AP2542 AP2543 apexs Switch Block Manual AP0281 Switch Block Comprises of 0282 AP0283 Switch Block Switch Block Mount Valve gt 1 x Bailout inlet port with 3 8 hose adaptor male 4 x Standard 3 8 outlet ports 1 x 1 2 NPT port this is a dual use port Inlet for primary air supply using check valve and inlet adapter version APO281 4 x inlet adapters AP2540 3 8 NPT 18 6JIC AP2541 3 8
21. ir to escape Check for leaks via the open port This test is to determine whether the shaft seat 7 is sealed correctly Remove from the water and allow the valve to drain disperse any remaining water by opening valve Switch Block Manual pressure hose to open port hand tighten with 9 16 spanner Use either a regulator hose connected to a second stage or an inflation hose connected to an inflation valve NOTE Which ever hose type used it is only required for pressure relief 5 Open switch block valve Immerse switch block into water and check for leaks on all fittings Pay close attention to 1 2 NPT adapter with PTFE tape Turn off air supply 7 Vent air from unit by purging valve or regulator attached CS NOTE If testing AP0282 R O W version a manual blow test is required Remove a 3 8 blanking plug and blow through the inlet adapter and listen for air passing through empty port Then suck on the inlet adapter and no air should be drawn If Any Leaks Are Found Refer to Trouble Shooting Guide 21 Switch Block Manual Disassembly Procedures for the Assembly Procedures for the Switch Block Mount Switch Block Mount Holding the nyloc nuts 4 with 7mm spanner remove the four screws 6 using 2 5mm allen key Remove back plate 7 6 Carefully place the spring 3 into the recess in the button 2 and fit both into bas
22. k Mount Lock it in position by hand tightening the bolts using a 2 5mm allen key and a 7mm spanner To assemble to a vertical strap align the slots horizontally on the back plate and thread through back plate before boltong together The Apeks Switch Block is easily removable from the Switch Block Mount This enables the Switch Block to be removed from the harness after completion of diving while leaving the Switch Block Mount fixed in place on the harness During use the Switch Block is retained in place by means of H3 DIVING HARNESS PN 400800 a spring loaded button catch on the mounting plate 9 Switch Block Manual Switch Block Manual owitch Block Valve Setup Attach supply hoses relative to which configuration you are using to 5Nm 44in lbs of torque Use umbilical supply adapter suited to the fitting on supply hose 3 Slide the switch block into place Move the switch block up and down to ensure that it is held securely in place The Switch Block will only fit into Switch Block Mount one way LS outlet ports are 3 8 UNF 24 thread The Switch Block can be checked to ensure the valve seals refer to page 15 WARNING If the bailout valve leaks gas will empty from the bailout cylinder leaving no air for the diver in an emergency situation Operation Pre Dive Check Ensure the appropriate hoses are attached as shown in the configuration section pages 9 amp 1
23. ld be stored in a sealed bag in a cool dry and dark location Warranty Information Apeks warrants to the original purchaser that the product will remain free from defects in material and workmanship throughout it s useful life provided that it receives normal use proper care and prescribed service This warranty does not apply to units subject to misuse abuse neglect modifications or unauthorised service This warranty is limited to repair or replacement only at the discretion of Apeks Aqualung A WARNING It is dangerous for untrained and uncertified persons to use the equipment civered by this warranty Therefore use of this equipment by an untrained person renders any and all warranties null and void Use of open circuit umbilical gas supplied equipment by anyone who is not a trained or certified diver or receiving training under the supervision of an instructor could lead to serious injury or death Whenever your unit requires prescribed service or warranty consideration Apeks Aqualung requires that the work is carried out by an authorised technician For help finding a technician in your area please contact Apeks Aqualung www apeks co uk www aqualung com This warranty gives you specific legal rights You may have rights which vary from country to country 15 Switch Block Manual APEKS DISCLAIMS AND EXCLUDES ANY LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES SOME STATES IN THE U S AND CERTAIN
24. seomm um Part A APO347 K Shaft Assembly Kit contains parts 4 5 6 7 ready assembled All items in bold italics to be replaced when servicing Service kit ref APO281 K 29 Switch Block Manual AP0282 Switch Block Valve Exploded Parts Diagram Lo For inlet adapter details refer to page 5 AP3048 Gland Nut Switch Block AP1408 3 8 UNF Blanking Plug 6 1267 BS015 O ring AP1409 5011 O Ring AP3047 Shaft Switch Block AP 1259 38 3 8 UNF Red Moss Cap Com Part A AP0347 K shaft Assembly Kit contains parts 4 5 6 7 ready assembled All items in bold italics to be replaced when servicing Service kit ref APO281 K 30 Switch Block Manual AP0283 Switch Block Mount Exploded Parts Diagram pm 31 amp apeks TECHNICAL SUPPORT SWITCH BLOCK VALVE OWNER and MAINTENANCE MANUAL Apeks Marine Equipment Ltd Neptune Way Blackburn Lancashire England BB1 2BT Tel 0044 0 1254 692200
Download Pdf Manuals
Related Search