Service Manual Layout
Contents
1. ON position the switch has become weakened and needs to be replaced 5 While holding the exhaust valve assembly 1 and valve housing secure turn the exhaust valve retaining collar 17 counter clockwise until it has completely disengaged from the threads of the exhaust valve housing Remove the exhaust valve assembly and set it aside Fig 4 Bayonet Connection 1998 Aqua Lung America Inc 6 Divator Il Full Face Mask Service amp Repair Manual 6 Remove the exhaust valve retaining collar from the valve housing and set it aside 7 Turn the valve module retaining collar 43 counter clockwise to loosen and remove from the valve housing 21 and set the collar aside 8 If the second stage is configured with a positive pressure switch assembly 22b ensure that the switch is set to the ON position by turning it down away from the valve housing This will prevent the locking spring from obstruct ing the lever as the valve module exits the housing 9 While holding the second stage assembly secure firmly grasp the threaded fitting of the inlet chamber 40 between thumb and forefinger and pull the valve module assembly 23 straight out of the valve housing being careful to avoid stressing the lever as it exits the housing Set the valve module assembly aside on a padded surface 10 Using the pinch method remove and discard the O ring 19 from the bayonet connector of the valve housing 11 Place a wide2. AQUALUNG Authorized Dealer SERVICE amp REPAIR MANUAL Divator Full Face Mask Table of Contents Introduction Warnings Cautions amp Notes Scheduled Service General Guidelines Initial Inspection Procedure External Inspection Pressure Test Disassembly Procedures Second Stage Exhaust Valve Breathing Valve Module Second Stage Reassembly Breathing Valve Module Exhaust Valve Testing amp Adjustment Overview of Adjustments Leakage Test Exhalation Resistance Test Automatic Positive Pressure Test Opening Effort Test Non Positive Pressure Air Flow Test Seal Integrity of Non return Inlet Valve Final Assembly Disassembly Procedures Full Face Mask Reassembly Procedures Full Face Mask Table 1 Troubleshooting Guide Table 2 Recommended Tool List Table 3 Standard Parts Replacement Schedule Procedure A Cleaning amp Lubrication Table A Recommended Lubricants amp Cleaners Schematic Drawings Second Stage w out Positive Pressure Second Stage w Positive Pressure Mask Assembly Doc 7802 86 AQUA GLunG Service amp Repair Manual Divator II Full Face Mask Introduction This manual provides factory prescribed proce dures for the service and repair of the Divator II full face mask and second stage It is not intended to be used as an instructional manual for untrained person nel The procedures outlined within this manual are to be performed only by per
3. 8 Mate the cup of the balancing diaphragm 37 into the open end of the control valve flange with the flat side facing in Fig 9 Control Valve Piston Alignment b 0 7mm a 1 5mm Fig 10 Preliminary Adjustment Settings Rounded Feature facing 12 O clock Lever facing 9 O clock Fig 11 Lever Support Alignment A i He iu me Fig 12 Control Valve Flange Alignment 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 11 Fig 13 Retaining Ring Installation Fig 14 Lever Play 10 11 12 13 Tamp it in gently with a forefinger to ensure that the sealing lip is seated evenly on all sides and dress the sealing lip of the diaphragm with a very light film of silicone grease Mate the valve seat carrier 38 evenly over the male threads of the flange While holding the flange secure turn the valve seat clockwise to engage the threads and then continue turning it by hand until snug If resistance or binding is felt unscrew the valve seat carrier and re seat the balancing diaphragm before proceeding to the next step Install both O rings 41 amp 42 into their respective grooves of the inlet chamber 40 Insert the valve assemblv into the inlet chamber and rotate the valve assembly as needed so that the tabs of the control valve body seat into the cutout recesses Lay the valve assem bly horizontal with the tip of the lever facin
4. 860 520 5000 ChromeSafe Degreaser and acid bath for reusable Aqua Lung P N 0201 05 ultrasonic cleaning solution stainless steel and brass parts 1 quart Oakite 31 Acid bath for reusable stainless Oakite Products Inc steel and brass parts 50 Valley Road Berkeley Heights NJ 07922 White distilled vinegar Acid bath for reusable stainless Household grade 100 gr steel and brass parts CAUTION DO NOT use muriatic acid for the cleaning of any parts Muriatic acid even when strongly diluted can harm chrome plating and may leave a residue that is harmful to O ring seals and other parts Liquid dishwashing detergent Degreaser for brass and stainless steel parts Household grade diluted with warm water general cleaning solution for plastic rubber and anodized aluminum parts Snoop Leak testing Nupro Company 400 E 345th St Willoughby OH 44094 440 951 7100 1998 Aqua Lung America Inc 26 Divator Il Full Face Mask Service amp Repair Manual Divator II Full Face Mask Second Stage w out Positive Pressure Key Part Description Key Part Description 3007 07 Second Stage Assy w out positive pressure 22a 3006 57 Sealing Plug non positive pressure 1a 3006 97 Exhaust Valve Assy non positive pressure 23a 3006 98 Valve Module Assy non positive pressure 2 3006 47 Purge Cover 24 3006 87 Lever Assy 3 3006 19 Shield Ring 25 3006 92 Contro
5. Fig 29 Correct Position of Push Pad Support 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 21 9 Closely examine each section of the lens frame assembly 7 to identify the threaded male and unthreaded female ends which face in opposite directions on either side If either spacer washer 6 was removed reinstall it into the female end of the frame section 10 Apply soapy water to the area of the mask body surrounding the lens and fit one section of the frame securely over the bottom portion of the mask body exactly centered below the lens Check to ensure that there is no binding or crimping of the mask body around the lens and fit the other section over the top of the lens Using two hands squeeze both sections of the frame together until the male end of each section mates into the opposing female opening 11 Insert each screw 5 into the female non threaded ends on opposite sides of the frame sections and turn clockwise by hand to engage with the threaded insert that is molded into the male end on the opposite side see Fig 30 After checking to ensure that the screws have engaged the threads of the frame inserts apply a Phillips screwdriver to turn each screw clock wise alternating between them several times to ensure that they are uniformly tightened snug When finished check the fit of the frame assembly to ensure it is securely held together on both sides WARNING
6. Reassembly gently fit the securing ring down over the diaphragm so that it is seated evenly on all sides see Fig 17 Install the washer 13 over the stem of the lever guide 12 and press the sleeve of the lever guide into the small groove in the center of the exhaust valve carrier 11 Fit the exhaust valve diaphragm 9 over the stem of the exhaust valve carrier with the raised feature in the center facing up Check to ensure it is seated evenly on all sides Place the non return sealing disc on a flat surface with the stem facing up Turn the diaphragm assembly over so that the exhaust valve diaphragm is facing down and seat the hollow center of the exhaust valve retainer over the sealing disc stem Dress the O ring 16 with a visible film of silicone grease Fig 17 Securing Ring Alignment and install it into the groove of the control diaphragm retainer Place the exhaust valve housing on a flat surface with the purge cover facing down If needed assemble the purge valve spring 6 with the purge button 5 and place the purge button inside the housing with the mating stem and spring facing up Place the diaphragm assembly complete with sealing disc directly over the center of the purge valve spring Using both hands to maintain this alignment press the exhaust valve carrier straight down so that it snaps into the exhaust valve housing Set the exhaust valve assembly aside Positive Pressure Units Only a Install
7. amp Repair Manual 3 AUTOMATIC POSITIVE PRESSURE TEST This test is used for masks equipped with positive pressure to determine whether the positive pressure is turned on automatically by inhaling through the second stage mouthpiece a Check to ensure that the positive pressure switch is turned to the OFF position against the second stage housing b Fita paper mouthpiece over the flanged opening of the measuring housing c Crimp the clear tubing to seal off the flow of air and inhale sharply through the paper mouthpiece connected to the second stage The positive pressure switch should automatically open to the ON position d Ifthe switch does not automatically open it may be necessary to replace the locking spring the return spring and or the switch with O ring e When the positive pressure mechanism functions correctly proceed to the following test 4 OPENING EFFORT TEST Non Positive Pressure This test is used to measure the inhalation effort that is required to actuate the flow of air at the beginning of each breathing cycle and determine whether it is within the minimum and maximum tolerances a Ensure that the test kit measuring bottle is filled to the fill line with fresh water and the bottle is securely held in the round cavity of the box b Feed the clear tubing into the bottle until the weighted end touches the bottom c Inhale lightly through the paper mouthpiece and watch the tubing closely
8. blade screwdriver inside the inlet opening of the valve housing so that the blade rests flat beneath the center of the non return inlet valve 20 See Fig 5 Lift the screw driver straight up to unseat the inlet valve and pull it out from the opposite side of the valve housing Closely inspect the non return inlet valve to check for any signs of deterioration or curling of the diaphragm If found discard the non return inlet valve and do not attempt to reuse ep CAUTION Do not pry out the non return inlet valve from NT A above or apply the screwdriver beneath it at an angle Doing um so may damage the inlet valve or valve housing requiring the replacement of these parts EXHAUST VALVE 12 Place the exhaust valve assembly on a flat surface with the purge cover facing down While gently holding the lever guide 12 in place to prevent the ejection of parts grasp the exhaust valve housing between thumb and forefinger on opposite sides of the threads Gradually squeeze the exhaust valve housing to release the diaphragm assembly 7 Fig 5 Non Return Valve Removal 13 Lift the diaphragm assembly straight off the purge spring 6 and set the sealing disc 8 aside Remove the O ring 16 from the control diaphragm retainer 15 Discard the O ring and do not attempt to reuse 14 Gently remove the securing ring 10 from the control dia phragm 14 and peel the lip of the control diaphragm off the exhaust valve carrier 11 15
9. for positive pressure set the positive pressure switch to the OFF position b Slowly open the air supply to pressurize the regulator with filtered air and listen closely for any audible leakage If leakage can be heard refer to the Troubleshooting Guide Table 1 and correct the problem as needed before continuing NOTE The second stage valve will begin to open when the intermediate pres sure exceeds 175 230 psi depending on the adjustment If this is determined to be the cause of leakage shut off the air supply and depressurize the regula tor to repair or replace the first stage and then repeat steps a amp b C Attach the measuring housing of the Interspiro mini test kit P N 3007 81 onto the bayonet connection of the second stage and check to ensure that it is seated evenly and securely over the mounting O ring Fit the rubber bulb securely inside the larger port on one side of the housing swivel ring and fit the non weighted end of the clear tubing over the nipple on the opposite side Place a thumb over the flanged opening of the measuring housing and crimp the tubing to seal off the flow of air while performing the following steps Purge the second stage several times and then completely immerse it in a large container of fresh water being careful to prevent water from entering the small inlet hole of the rubber bulb Allow the water to settle and check closely for any steady bubble streams that may indicate l
10. height of between 7 0 8 5mm or it will be necessarv to readjust the lever support according to the procedure outlined in the following section titled Testing amp Adjustment before proceeding Pass the threaded end of the retaining collar 17 over the small end of the valve housing and fit it into place below the rim of the large end of the housing Place the exhaust valve assembly 1 directly over the rim of the valve housing and align the lever guide 12 inside the spoon of the lever While holding both assemblies secure mate the retaining collar onto the threads of the exhaust valve housing 4 and turn the collar clockwise by hand until snug This concludes the reassembly of the Divator II second stage Refer directly to the following section titled Testing amp Adjustment 1998 Aqua Lung America Inc 14 Divator Il Full Face Mask Service amp Repair Manual Testing amp Adjustment OVERVIEW OF ADJUSTMENTS The second stage breathing valve is designed so that it is possible to finely adjust both the opening effort and the volume of air that can flow through the second stage at peak demand If it becomes necessary to perform either or both of these adjustments based on the results of the following test procedures and the troubleshooting instructions in Table 1 it is important to first understand the affect that each adjustment can have on the regulator s performance Always remember to perform each adjustment in ver
11. mainte nance procedures outlined in the Divator ll Owner s Manual 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 before attempting to disassemble or service the Divator II and to learn which spe cialty tools and replacement parts will be required 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 impor tant to first perform the Initial Inspection proce dure and refer to Table 1 Troubleshooting to determine the possible cause of any symptoms which may be present 4 As each individual mask and regulator is disas sembled reusable components should be segre gated to prevent them from mixing with non reusable parts or parts from other masks and regulators Delicate parts and those which contain critical sealing surfaces must be pro tected and isolated from other parts to prevent damage during the cleaning procedure 5 Use only genuine Interspiro factory parts pur chased directly from Aqua Lung or Interpspiro when servicing
12. the Divator II Substitution with another manufacturer s parts constitutes an after market modification of the product and renders all warranties null and void 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 Do not overtighten parts when reassembling Most parts are made of either marine brass or plastic and can be permanently damaged by undue stress 4 Divator Il Full Face Mask Service amp Repair Manual Initial Inspection Procedure EXTERNAL INSPECTION for masks used with SCUBA 1 Visually inspect the first stage filter to check for any signs that contaminants may have entered the LP hose and mask NOTE A white or rust colored residue usually indicates that the regulator has been used with a corroded aluminum or steel cylinder A green discoloration positively indicates that moisture has entered the regulator and internal corrosion is therefore likely to be found in the first stage 2 Slide back the hose protector s to inspect the condition of the LP hose at its fittings and along its length Check closely for any signs of blistering or abrasion or corrosion of the fittings 3 Inspect the overall condition of the mask assembly to check for any externally obvious signs of damage or deterioration PRESSURE TEST 1 Prior to performing any disassembly connect the second stage
13. the O ring 22 1 onto the shaft of the switch 22 2 b Insert the shaft of the switch partially into the valve hous ing 21 and slide the spacer 22 4 over its length Then hold the return spring 22 5 secure in the recess beside it with the coil facing up and the hook facing toward the breathing valve Turn the switch up to the OFF position and press it completely into the housing through the coil of the return spring Lay the straight end of the return spring to the outside of the small nub and check to ensure the spacer is flush against the valve housing see Fig 18 c Closely examine the ends of the locking spring 22 3 to note that one hook that is longer than the other Squeeze both arms of the spring together and insert the longer Fig 18 Return Spring Position hook into the oval hole in the shaft that is nearest to the 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 13 Fig 19 Locking Spring Installation imm min io 3 5 mm max Fig 20 Pre Set Locking Spring Height Rounded Fig 21 Valve Module amp Housing Alignment 7 0mm min to 8 5mm max Fig 22 Pre Set Lever Height 28 29 30 33 34 switch Then insert the shorter hook into the other oval hole that is nearest to the return spring see Fig 19 Relax the locking spring and check to ensure it rests level d Using the pin of the seat tool lift the hook of the r
14. 0 3006 68 O ring 10 3006 56 Push Pad Support 21 3006 77 Circlip 11 3006 54 Push Pad 22 3006 42 Com Port Cover 12 3006 84 Oral Nasal Inner Mask Assy 23 3006 43 Knurled Screw 13 3007 01 CO Non Return Valve Retainer 24 3007 31 Hot Mic w Screws amp Washers 1998 Aqua Lung America Inc ROUA LUNG 2340 Cousteau Court Vista California 92083 Phone 760 597 5000 Fax 760 597 4900 www aqualung com
15. Grasp the control diaphragm between thumb and forefinger at the base near the control diaphragm retainer and gently work it completely out of the groove of the retainer being careful to avoid stretching the midsection Closely inspect the dia 1998 Aqua Lung America Inc Divator II Full Face Mask Service amp Repair Manual Fig 6 Positive Pressure Spring Removal phragm on all sides to check for any signs of cracking tears or other signs of deterioration or damage If found discard it and do not attempt to reuse 16 Gently remove the exhaust diaphragm 9 from the exhaust valve carrier and closely inspect it to check for any signs of deterioration or distortion If found discard it and do not attempt to reuse 17 Remove the lever guide 12 and washer 13 from the exhaust valve carrier and separate the washer from the lever guide 18 Lift out the purge button 5 and spring from the exhaust valve housing and closely inspect the spring to check for any signs of damage or corrosion If found remove the spring from the purge button and do not reuse It is otherwise not necessary to remove the spring from the purge button for cleaning 19 Remove the purge cover 2 from the exhaust valve housing and examine it to check for any signs of obvious decay or damage If found discard it and do not attempt to reuse 20 Closely inspect all plastic components of the exhaust valve assembly to check for any signs of thread da
16. Separation of the lens frame assembly may occur ifthe screws are not correctly installed in opposing directions and could result in serious injury or death if water leaks into the mask underwater Fig 30 Correct Frame Reassembly 12 Orient the head harness 1 with the mask body so that the grooved edges face inward towards the head and insert each tapered strap end through its respective buckle 13 With the full face mask facing upright orient the second stage assembly with the mask manifold so that the exhaust valve faces directly to the left and the mask faces upright Turn the second stage assembly approximately 20 degrees clockwise so that the exhaust valve is cocked slightly upward and mate the bayonet connection of the second stage into the mounting port ofthe mask manifold Turn the second stage downward Fig 31 Correct Mounting of Second Stage until it is horizontally level to secure the connection with the Onto Full Face Mask mask see Fig 31 14 Install the O ring 20 onto the com port cover 22 and mate the cover with or without microphone assembly onto the com port of the mask manifold Turn each screw 23 clock wise by hand to engage the threads and then tighten alter nately until they are both uniformly snug This concludes the service and repair procedures for the Divator II Full Face Mask 1998 Aqua Lung America Inc 22 SYMPTOM Leakage or freeflow from second stage with mask not
17. acing in and mate the lever support onto the shorter end of the control valve body Turn the lever support clockwise to engage the threads being careful to avoid cross threading and continue turning it fully inward until it stops Using a feeler gauge turn the lever support back counter clockwise until it is set with a gap of exactly 0 7mm between the control valve body see Fig 10b 5 While holding the control valve with its rounded index feature facing towards twelve o clock insert the rod of the lever assembly 24 into the lever support and partially through the sealing sleeve Then hold the lever support and control valve body stationary and rotate the lever assembly until the end of the lever faces directly toward nine o clock see Fig 11 Tamp the lever assembly inward so that the hinge pin seats inside the lever support and lay the assembly horizontal without disturbing the alignment of these parts 6 Fit the spring 34 over the piston end of the control valve body so that it is seated evenly over the adjusting nut 7 Mate the control valve flange 36 over the spring and onto the control valve body with the arms mated through the keyed support of the body see Fig 12 Hold the body and the flange fully compressed between thumb and forefinger and insert the pin 29 through the flange lever rod and the ellipti cal hole of the body Relax the flange and body when the pin is centered between the arms of the flange
18. ange 36 and set the control valve assembly with the retaining pin aside While holding the control valve flange secure turn the valve seat carrier 38 counter clockwise to loosen and remove Closely inspect the flange for any signs of cracking or thread Fig 7 Removal of Large Pin damage and set it aside if it is in reusable condition Using the smooth rounded end of the O ring installation tool P N 9440 22 carefully remove the balancing diaphragm 37 from the seat carrier by working out one side first and then the other Discard the valve seat carrier and do not reuse Closely inspect the balancing diaphragm to check for any signs of decay punctures or tears If found discard and do not attempt to reuse Remove the spring 34 from the control valve body and inspect it closely under magnification to check for any signs of permanent corrosion or damage If found discard the spring and do not attempt to reuse While holding the control valve body and lever support secure pull the lever and rod assembly straight out of the lever support Closely inspect the lever assembly for any signs of corrosion or deformity of the crossbar which at taches the spoon to the rod Discard the lever assembly if damage is found or set it aside if it is in reuseable condition While holding the control valve body secure turn the lever support 26 counter clockwise to loosen and remove Using the seat extraction tool gently remove the
19. aning 10 Closely inspect the condition of the inner mask manifold to check for any signs of cracking or other damage Discard the manifold if any damage is found or set it aside for cleaning if it is found to be in reusable condition 11 Closelv inspect the outer manifold of the mask body and the metal tension band which holds it in place see Fig 26 The tension band should be snug and secure around the manifold and the manifold should be free of any signs of cracking or other damage If any damage is found or if the tension band is not securely snug the mask body assembly must either be Fig 26 Outer Manifold with Tension Band returned directly to Aqua Lung America Inc for factory service or replaced with new WARNING Do not attempt to remove or replace the metal tension band which holds the full face mask body together with the outer manifold Removal of the outer manifold or the tension band must only be performed either by Aqua Lung America Inc or Interspiro 12 To remove the head harness 1 from the mask body assembly simply pull each strap through its respective buckle while holding the roller down to provide maximum clearance for the DO NOT REMOVE tapered end 13 If a buckle 3 exhibits signs of rust or other damage that requires its replacement it is important to remove it as care fully as possible to avoid tearing the material of the mask body To prevent any damage to the mask body bend both hooks
20. dure A and Table A titled Cleaning amp Lubrication before proceeding to the Reassembly Procedures 1998 Aqua Lung America Inc 10 Divator Il Full Face Mask Service amp Repair Manual Second Stage Reassembly BREATHING VALVE MODULE 1 Place the spring 32 inside the open end of the control valve body 28 which faces toward the main valve 2 Align the elliptical hole in the shaft of the control valve piston 33 with the elliptical hole in the control valve body see Fig 9 While maintaining this alignment insert the shaft of the piston through the spring and into the body Compress the control valve body and piston between thumb and forefinger until the hole in the piston shaft can be sighted through the small hole in the control valve body and insert the small pin 30 through the control valve body and piston When the pin is perfectly centered inside the control valve body relax the piston to hold it in place 3 With its knurled side facing in mate the adjusting nut 31 over the piston and onto the control valve body Turn it clockwise to engage the threads being careful to avoid cross threading and continue turning it fully inward until it stops Using a feeler gauge or similar gap measuring tool turn it back counter clockwise until it is set with a gap of exactly 1 5mm between the control valve body see Fig 10a 4 Lav the sealing sleeve 27 inside the open end of the lever support 26 with the flat side f
21. e connection with the mask Install the O ring 20 onto the com port cover 22 and mate the cover with or without microphone assembly onto the com port of the mask manifold Turn each screw 23 clockwise by hand to engage the threads and then tighten alternately until they are both uniformly snug This concludes the service procedures for the Divator Il second stage If service or repair of the mask assembly is required refer directly to the fol lowing section titled Disassembly Procedures Full Face Mask 1998 Aqua Lung America Inc 18 Divator Il Full Face Mask Service amp Repair Manual Disassembly Procedures Full Face Mask NOTE Before performing any disassembiv of the mask refer to the second stage disassembiv procedure steps 2 3 to remove the second stage regulator 1 While maintaining tension on the frame apply a small Phillips screwdriver to partiallv loosen first one screw 5 on either side of the mask and then the other Alternatelv loosen both screws until thev are disengaged from the threaded inserts inside the frame and pull them straight out to remove NOTE On earlier models the spacer washer 6 mav come loose and fall out when the screw is removed On later models the washer may be permanentiv installed into the frame section and cannot be removed If necessary be sure to reinstall the washer before reassembling the frame 2 While holding one section of the frame secure firmly grasp th
22. e other and carefully pull it away on first one side and then the other until it is completely removed from the skirt Pull off the remaining section and closely examine the threaded metal inserts in both sections to check for any signs of thread damage or separation from the surrounding plastic If found replace the frame with new and do not attempt to reuse NOTE If either section of the frame is found to be damaged and requires replacement it will be necessary to replace both sections as a complete assembiv 3 Gently pull the lens 4 out of the mask body assembly 2 and inspect the skirt of the mask body for any blemishes tears cuts distortion or signs of deterioration If any damage or deterioration is found which may cause leakage of the mask it will be necessary to replace the mask body with new 4 Examine the lens to check for any signs of cracking or other damage especially around the edge which seals inside the mask body If excessive scratching is found on the inside surface of the lens consult with the owner to determine whether replacement may be necessary NOTE Opaque haze multiple cracks or crazing may be caused by a chemical reaction with certain aerosol spray propellants If the lens exhibits these signs of chemical attack it must be replaced and cannot be reused 5 Squeeze together both sides of the push pad 11 and twist it free of the support 10 to remove see Fig 25 Examine the condition of the p
23. e proper cleaning and like new condition ANODIZED ALUMINUM PLASTIC amp RUBBER PARTS Anodized aluminum parts and parts made of plastic or rubber such as box bottoms box tops dust caps etc may be soaked and cleaned in a solution of warm water mixed with mild dish soap Use only a soft nylon toothbrush to scrub away any deposits Thoroughly blow dry using low pressure filtered air HOSES If buildup of corrosion is severe it is permissible to soak only the hose fittings in ChromeSafe cleaner as needed and not allow any solution to enter the hose Rinse in fresh water and allow to dry with the cleaned ends hanging down Blow filtered air through them prior to installing onto the regulator LUBRICATION AND DRESSING All O rings should be lubricated with either Christo Lube preferred for high pressure systems or Dow Corning 111 food grade silicone grease 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 silicone grease as this will attract particulate matter that may cause damage to the O ring Hoses and other black rubber parts may be dressed and preserved using a clean cloth impregnated with a pump silicone milk CAUTION Aerosol spray silicone must be strictly avoided Do not attempt to use as a substitute for silicone grease CAUTION Do not apply any form of silicone lubricant to silicone rubber pa
24. eakage After no leakage can be detected gently squeeze the rubber bulb to simulate exhalation and check once more to determine whether any leakage occurs If any leakage is detected while performing the above steps remove the valve module from the housing if necessary to locate the source of the leak Correct the problem as needed and repeat this test before proceeding to any of the following tests 2 EXHALATION RESISTANCE TEST This test will ensure that the exhaust valve is correctly assembled and measure the exhalation resistance to ensure it does not exceed the maximum tolerance a Fill the test kit measuring bottle to the fill line with fresh water and press the bottle into the round cavity of the box b Feed the clear tubing into the bottle until the weighted end touches the bottom Place a thumb over the top of the measuring housing to seal off the airflow Set the positive pressure switch if applicable to the ON position away from the second stage housing Slowly squeeze the rubber bulb while watching to check that no bubbles escape from the end of the tubing NOTE If bubbles can be seen escaping from the end of the tubing this indi cates that the exhaust valve is improperly assembled or that the flow of air through the exhaust valve is obstructed by a foreign object Disassemble to correct as needed and repeat the above test 1998 Aqua Lung America Inc 16 Divator Il Full Face Mask Service
25. eturn spring and place it over the arm of the locking spring e With the positive pressure switch set to the OFF posi tion against the valve housing check the height of the locking spring to ensure that the end stands between 1 to 3 5mm above the rim of the valve housing see Fig 20 Place the non return inlet valve 20 inside the recess in the rear of the valve housing 21 Place a forefinger over the rim of the inlet valve and firmly press it inward to seat the rim flush with the surrounding valve housing Be careful to avoid pressing directly against the retainer in the center of the inlet valve as this may cause the diaphragm to lift up at the edges Install the O ring 19 onto the bayonet of the valve housing If the valve housing 21 is assembled with a positive pressure switch set the switch to the ON position away from the valve housing Carefully guide the valve module assembly into the valve housing with the indexed feature of the control valve body aligned with the indexed feature of the housing see Fig 21 When done ensure that the top surface of the lever is aligned parallel with the outer rim of the housing Mate the retaining collar 43 onto the end of the valve hous ing and tighten clockwise by hand until snug Check the height of the lever by measuring the vertical dis tance between the highest portion of the lever and the outer rim of the valve housing see Fig 22 The lever must be set ata
26. fitting counter clockwise by hand to loosen and disconnect the hose from the second stage Do not use pliers 2a Unscrew both of the knurled screws 23 until they are com pletely disengaged If the mask is not assembled with a communications microphone gently separate the com port cover 22 from the mask assembly and set it aside 2b If the mask is assembled with a communications microphone be very careful to avoid stressing the microphone connection when removing the com port cover After loosening the cover from the com port rotate it 45 degrees counterclockwise and then turn it over to the right so that the microphone is facing perpendicular towards the port see Fig 3 Gently pull the microphone through the com port and set the port cover with the microphone assembly on a protected surface being careful to avoid stressing the connection with the receiver 3 While firmly holding the chin cup of the mask with one hand grasp the second stage assembly with the other and turn it approximately 20 degrees clockwise to disengage the bayonet connection see Fig 4 Pull the second stage assembly out and away from the connection port and set the mask aside 4 If the second stage contains a positive pressure assembly test the function of the switch by setting it to the OFF position nearest to the valve housing Rap the second stage lightly in one hand to determine the sensitivity of the switch If it falls down too easily to the
27. g down While holding the valve assembly and inlet chamber securely together fit the retaining ring 39 over the top of the inlet chamber with the square tab mated through the hole in front of the control valve flange see Fig 13 Check to ensure that the inlet chamber and control valve body are securely held together and the retaining ring is flush against the flange While holding the valve module assembly secure move the lever up and down to ensure that there is at least 3mm of play see Fig 14 If necessary readjust the lever support clock wise to increase the play or counter clockwise to decrease it EXHAUST VALVE 14 15 Fig 15 Control Valve Diaphragm Reassembly 17 Install the purge cover 2 onto the front of the exhaust valve housing 4 by fitting the groove of the cover over the lip of the housing Check to ensure that the purge cover is seated evenly on all sides If the shield ring 3 was removed fit it over the exhaust valve housing and set the housing aside Unfold the control diaphragm 14 so that smaller circumfer ence sealing lip is fully extended Examine the features of the control diaphragm retainer 15 to locate the thin deep groove in which the diaphragm seats Lay the retainer on a flat surface with this groove facing up and place the diaphragm directly over it with the lip facing down see Fig 15 While holding a section of the diaphragm between thumbs and forefingers of both hand
28. he regulator fails to pass this test the first stage may not have the airflow capacity to satisfactorily meet the demand of the Divator Il second stage Otherwise refer to the Troubleshooting Guide Table 1 and readjust the second stage as needed 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 17 6 A AIR FLOW TEST Positive Pressure This test is used to check the flow capacity of the complete regulator first stage and second stage and ensure that the system can supply airflow exceeding a minimum of 300 liters per minute flow at extreme demand NOTE Ifthe second stage will be used with surface supplied air it will be neces sary to test the second stage while connected to the low pressure supply hose to ensure that the pressure differential caused by the length of the hose does not seriously impair its performance a Set the positive pressure switch to the OFF position against the housing b Remove the measuring housing from the second stage and fit the smaller flanged opening into the large end of the plastic connecting tube Then fit the connect ing tube directly over the non return inlet valve of the second stage Feed the clear tubing into the bottle until the weighted end touches the bottom d Hold the second stage horizontal and slowly move the positive pressure switch to the ON position away from the second stage housing only until bubbles begin to e
29. hragm 18b 3006 96 Valve Housing Assy Positive Pressure 38 3006 64 Valve seat 19 3006 72 O ring 39 3006 58 Retaining Ring 20 3006 86 Non Return Inlet Valve 40 3006 37 Inlet Chamber 21 3006 53 Valve Housing 41 3006 73 O ring 22b 3006 67 Positive Pressure Switch Assy 42 3006 74 O ring 22 1 3006 71 O ring 43 3006 12 Valve Module Retaining Collar 22 2 3006 33 Positive Pressure Switch 1998 Aqua Lung America Inc Divator II Full Face Mask Service amp Repair Manual TECHNICIAN S NOTES 27 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 28 Divator II Full Face Mask Mask Assembly AN 4 f 16 24 Key Part Description Key Part Description 1 3006 61 Head Harness 14 3006 82 CO Non Return Valve Diaphragm 2 3006 89 Mask Body Assy 15 3007 02 Oral Nasal Inner Mask 3 3006 81 Buckle Assy 16 3006 76 Screw 4 3006 59 Low Volume Lens 17 3006 34 Inner Mask Manifold 5 3007 03 Screw 18 3006 40 LP Hose 6 3006 62 Washer 18a 8200 11 O ring LP Hose to First Stage 7 3006 66 Lens Frame Assy 18b 8200 26 O ring LP Hose to Second Stage 8 3006 94 Equalizer Assy 19 3006 63 Com Port Cover Assy 9 3007 04 Screw 2
30. hragms 14 into the inner mask with the diaphragms facing inward Check to ensure that they are securely seated all around 4 Place the oral nasal inner mask inside chin cup of the mask body and mate the two manifolds together with all three screw holes approximately aligned Insert the short screw 16 into the bottom hole and turn clockwise by hand to engage the threads 5 Insert both of the long screws 9 through the ends of the push pad support and position the support over the manifold with the arc facing up towards the nose pocket of the inner mask see Fig 29 Mate both screws into the manifold and turn clockwise by hand to engage the threads Fig 28 Oral Nasal Cup Assembly 6 Apply a medium blade screwdriver to turn each screw clock wise until snug alternating between all three screws to ensure that they are uniformly tightened Do not cross thread or overtighten 7 Fit the push pad 11 securely onto the support using the positioning slot previously chosen by the user Check after ward with the user to ensure the push pad is correctly set to allow equalization but does not obstruct normal breathing through the nose 8 Fit the lens 4 into the skirt of the mask body with the nasal cavity positioned over the inner mask Check to ensure that it is evenly seated on all sides and that the positioning marks in the center of the lens and the mask body are perfectly aligned with each other at top and bottom
31. ilicone grease corrosion and grime from metal parts leaving only a brilliant shine For best results soak parts in an ultrasonic cleaner for 5 to 15 minutes unless the chrome finish is chipped or flaking Parts with damage to their chrome finish should be cleaned separately outside the ultrasonic cleaner to avoid agitation Be certain to isolate more delicate parts such as orifice cones to prevent damage to sealing surfaces CAUTION Harsh acids such as muriatic acid may cause damage to parts and must be strictly avoided White vinegar although less effective is one suitable substitute for ChromeSafe CAUTION Ultrasonic cleaning times in excess of 15 minutes may damage the chrome finish of certain parts Be certain to use a timer and do not leave parts unattended while cleaning NOTE Although ChromeSafe contains a degreasing agent cleaning heavily greased parts in ChromeSafe will shorten the effective life of the solution and require it to be replaced on a more frequent basis Heavily greased parts may be degreased in a solution of warm water and mild dish detergent prior to being placed in the acid bath Fresh Water Rinse If tap water is extremely hard distilled water may be used to prevent any mineral residue Remove parts from the acid bath and place directly into this rinse Agitate lightly and allow to soak for 5 10 minutes Remove and blow dry with low pressure 25 psi filtered air and inspect closely to ensur
32. l Valve Assy 4 3006 48 Exhaust Valve Housing 26 3006 46 Lever Support 5 3006 21 Purge Button 27 3006 36 Sealing Sleeve 6a 3006 17 Purge Valve Spring non positive pressure 28 3006 38 Control Valve Body 7 3006 93 Diaphragm Assy 29 3006 78 Pin 8 3006 22 Non Return Sealing Disc 30 3006 79 Pin 9 3006 23 Exhaust Valve Diaphragm 31 3006 16 Adjusting Nut 10 3006 26 Securing Ring 32 3006 44 Spring 11 3006 24 Exhaust Valve Carrier 33 3006 14 Control Valve Piston 12 3006 29 Lever Guide 34a 3006 18 Spring non positive pressure 13 3006 51 Washer 35 3006 83 Main Valve Assy 14 3006 27 Control Diaphragm 36 3006 41 Control Valve Flange 15 3006 28 Control Diaphragm Retainer 37 3006 11 Balancing Diaphragm 16 3006 69 O ring 38 3006 64 Valve seat 17 3006 13 Exhaust Valve Retaining Collar 39 3006 58 Retaining Ring 18a 3006 99 Valve Housing Assy non positive pressure 40 3006 37 Inlet Chamber 19 3006 72 O ring 41 3006 73 O ring 20 3006 86 Non Return Inlet Valve 42 3006 74 O ring 21 3006 53 Valve Housing 43 3006 12 Valve Module Retaining Collar 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 27 TECHNICIAN S NOTES 1998 Aqua Lung America Inc Divat
33. mage stress cracking breakage or other damage If found discard the affected item s and replace with new All plastic parts which are found to be in reusable condition should be set aside for cleaning Refer to Procedure A Cleaning amp Lubrication NOTE It is not necessary to remove the shield ring 3 from the exhaust valve housing unless it is found to be damaged upon inspection If the shield ring is damaged it can be lifted off the housing with a medium blade screwdriver 21 Positive Pressure Units Onlv a While holding the second stage valve housing secure lift the hook of the return spring 22 5 off the locking spring 22 3 using the pin of the seat extracting tool b Set the positive pressure switch 22 2 to the OFF posi tion by turning it towards the valve housing and squeeze the two arms of the locking spring together until the arm which is nearest to the return spring can be removed from the switch see Fig 6 Pull the other arm out and closely inspect the locking spring under magnification to check for any signs of corrosion bending or other damage If found discard the spring and do not attempt to reuse c While holding the return spring and spacer 22 4 station ary pull the positive pressure switch out of the valve housing Set the spacer aside and closely inspect the spring under magnification to check for any signs of corrosion bending or other damage If found discard it and do not attemp
34. of the buckle upward with a medium blade screwdriver until the buckle can easily be pulled out without stressing the body Discard the buckle after it has been removed and do not attempt to reuse 1998 Aqua Lung America Inc 20 Divator Il Full Face Mask Service amp Repair Manual Reassembly Procedures Full Face Mask CAUTION Because it is difficult to bend the hooks of a buckle back to their original shape without breaking them it is important to avoid reusing a buckle once it has been removed The buckle may otherwise not provide proper retention if it is reused and it may become disengaged from the mask body unexpectedly 1 To reinstall each buckle 3 of the head harness 1 apply a small amount of soapy water to the retainers of the mask body With the ends facing up insert the pre bent hooks of each buckle assembly into the slotted retainer of the mask body see Fig 27 When the ends of the hooks have passed through to the opposite side pull the buckle backward to seat Fig 27 Buckle Installation the hooks securely over the top of the retainer and into their respective grooves 2 Install the oral nasal inner mask 15 onto its manifold 17 with the channeled side of the manifold facing outward see Fig 28 Align the positioning marks of the mask with the u manifold at top and bottom and check to ensure that the mask is securely seated all around 3 Install both of the non return valves 13 with diap
35. or II Full Face Mask Service amp Repair Manual 26 Divator II Full Face Mask Second Stage w Positive Pressure a 42 GWU A 1 i med 4 A L Key Part Description Key Part Description 3006 88 Second Stage Assy Positive Pressure 22 3 3006 31 Locking Spring 1b 3007 06 Exhaust Valve Assy Positive Pressure 22 4 3006 32 Spacer 2 3006 47 Purge Cover 22 5 3006 39 Return Spring 3 3006 19 Shield Ring 23b 3006 91 Valve Module Assy Positive Pressure 4 3006 48 Exhaust Valve Housing 24 3006 87 Lever Assy 5 3006 21 Purge Button 25 3006 92 Control Valve Assy 6b 3006 49 Purge Valve Spring Positive Pressure 26 3006 46 Lever Support Tee 3006 93 Diaphragm Assy 27 3006 36 Sealing Sleeve 8 3006 22 Non Return Sealing Disc 28 3006 38 Control Valve Body 9 3006 23 Exhaust Valve Diaphragm 29 3006 78 Pin 10 3006 26 Securing Ring 30 3006 79 Pin 11 3006 24 Exhaust Valve Carrier 31 3006 16 Adjusting Nut 12 3006 29 Lever Guide 32 3006 44 Spring 13 3006 51 Washer 33 3006 14 Control Valve Piston 14 3006 27 Control Diaphragm 34b 3006 52 Spring Positive Pressure 15 3006 28 Control Diaphragm Retainer 35 3006 83 Main Valve Assy 16 3006 69 O ring 36 3006 41 Control Valve Flange 17 3006 13 Exhaust Valve Retaining Collar 37 3006 11 Balancing Diap
36. rement Card Setting second stage lever height 1116 00 I P test gauge Intermediate pressure testing 9440 22 O ring tools O ring removal amp installation N A Medium blade screwdriver Removal of non return valve N A Gap feeler gauges 07 8 1 5mm Preliminary adjustment settings N A Magnifier w illumination Sealing surface inspection N A Ultrasonic cleaner Brass 8 stainless steel parts cleaning N A 13mm wrench 8 crow foot LP hose first stage fitting older models N A 6 wrench amp crow foot LP hose first stage fitting newer models 1094 36 Seat extraction installation tool Pin removal amp installation 3007 81 Second stage test kit Final adjustment amp tuning Table 3 Standard Parts Replacement Schedule PART NUMBER DESCRIPTION 3006 69 O ring 3006 72 O ring 3006 71 O ring 3006 64 Valve Seat 3006 73 O ring 3006 74 O ring 8200 11 O ring 8200 26 O ring 3006 68 O ring 3006 82 Non Return Valve Diaphragm 1998 Aqua Lung America Inc 24 Divator Il Full Face Mask Service amp Repair Manual Procedure A Cleaning amp Lubrication All Aqua Lung Regulators Acid Bath Aqua Lung strongly recommends ChromeSafe regulator cleaner P N 0201 05 for clean ing all reusable brass and stainless steel parts ChromeSafe is a specially formulated cleaner that does not harm rubber or Teflon parts yet effectively removes s
37. rts as this will cause them to deteriorate prematurely 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 25 Table A Recommended Lubricants amp Cleaners All Aqua Lung Regulators LUBRICANT CLEANER APPLICATION SOURCE Christo Lube All O rings seals cylinder valve threads Lubrication Technologies preferred for high pressure DIN systems 310 Morton Street Jackson OH 45640 614 286 2644 Dow Corning 111 All O ring seals Dow Corning Corp pure silicone grease P O Box 1767 T Midland MI 48640 800 248 2481 CAUTION Silicone rubber requires no lubrication or preservative treatment DO NOT apply silicone grease or spray to silicone rubber parts Doing so will cause a chemical breakdown and premature deterioration of the material Silicone Pump General preservative conditioner for McNett Corp non aerosol silicone milk spray hoses instrument console boots etc P O Box 996 Bellingham WA 98227 800 221 7325 CAUTION Aerosol spray silicone should be avoided because 1 common aerosol propellants may attack plastic and rubber parts and 2 because only a slight amount of silicone remains after the solvent evaporates and provides no lasting benefit Anti Seize Lubricant 80208 M A S cylinder adapter female threads Permatex Industrial Corp food grade U S D A approved Micra ADJ adjustment screw 705 N Mountain Rd for conformance to MIL A 907 E Newington CT 06111
38. s insert a small section of the sealing lip into the groove of the retainer Place a thumb over this section to hold it in place and work the other thumb around to seat the remainder of the diaphragm Tamp down the diaphragm above the sealing lip on all sides to ensure it is seated evenly and flush on all sides against the retainer Without disturbing the seating of the two parts fold the upper lip of the control diaphragm down and over the outside of the retainer see Fig 16 Tamp down the sealing lip once again on all sides to ensure that it is seated evenly and flush with the inside rim of the retainer 1998 Aqua Lung America Inc 12 18 19 20 21 22 23 24 25 26 27 Divator II Full Face Mask Service amp Repair Manual Lay the exhaust valve carrier 11 above the control diaphragm retainer with its stem facing up While holding the carrier and retainer together fold the control diaphragm up and over the exhaust valve carrier on all sides Without disturbing the seating of the control diaphragm with the retainer gently work the inner lip of the diaphragm into the outer groove in the exhaust valve carrier on all sides Place the securing ring 10 above the exhaust valve carrier and control diaphragm with the mating tabs facing down Rotate the securing ring as needed so the outer ridges of the Fig 16 Control Valve Diaphragm control diaphragm are centered between the mating tabs and
39. scape from the end of the clear tube Return the positive pressure switch to the OFF position NOTE Do not turn the positive pressure switch too suddenly to the ON position Strong airflow will empty the measuring bottle of water NOTE If bubbles do not escape from the clear test tube while the switch is set to the ON position during the above test procedure refer to the Troubleshooting Guide Table 1 and correct as needed SEAL INTEGRITY OF NON RETURN INLET VALVE This test ensures that the diaphragm of the non return inlet valve is in satisfactory condition and properly seated to provide a watertight seal a While holding the second stage with the non return inlet valve level and facing upward fill the cavity above the valve with clean water b Observe the water level for a full minute to determine whether leakage occurs c If any water leaks past the diaphragm remove and replace the complete non return inlet valve assembly FINAL ASSEMBLY 1 With the full face mask facing upright orient the second stage assembly with the mask manifold so that the exhaust valve faces directly to the left and the mask faces upright Turn the second stage assembly approximately 20 degrees clockwise so that the exhaust valve is cocked slightly upward and mate the bayonet connection of the second stage into the mounting port of the mask manifold Turn the second stage downward until it is horizontally level to secure th
40. sealing sleeve 27 from inside the lever support and closely inspect it to check for any signs of decay punctures or tears If found discard and do not attempt to reuse 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 9 7 32 While holding the control valve body secure unscrew the adjusting nut 31 Closelv examine the adjusting nut to check for anv signs of cracking breakage or thread damage and set it aside if it is in reusable condition 33 Hold the control valve body and control valve piston 33 between thumb and forefinger with the retaining pin 30 positioned verticallv Depress the piston to allow the pin to fall out and slowly relax to prevent any ejection of parts see Fig 8 Fig 8 Removal of Small Pin NOTE Ifthe pin does not fall out when the piston is com pletely depressed it may be necessary to push it out using the seat extraction tool 34 Pull the control valve piston with the spring 32 straight out of the control valve body and closely inspect the spring under magnification to check for any signs of permanent corrosion or damage If found discard the spring and do not attempt to reuse 35 Closely examine the control valve body and control valve piston to check for any signs of cracking breakage or thread damage and set them aside if they are in reusable condition This concludes the disassembly of the Divator Il second stage Refer directly to Proce
41. sitive pressure switch if applicable to the OFF position Listen closely to ensure that the second stage does not continue to flow any air 8 Turn the cylinder valve shut and depress the purge button again to completely depressurize the regulator before proceed Fig 2 Positive Pressure Switch ing to the following Disassembly Procedures OFF Position 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 5 Disassembly Procedures Second Stage WARNING The procedures provided in this manual are intended for use only by Authorized Aqua Lung Dealer personnel who have received factory authorized training directly from Aqua Lung or Interspiro for Divator II Full Face Masks which were originally sold by Aqua Lung U S Divers Aqua Lung America Inc assumes no responsibility or liability for any service performed by unauthorized personnel or for products not originally sold by Aqua Lung U S Divers A CAUTION It is imperative to use either the pinch method squeezing the O ring together between thumb and forefin ger until it extrudes from the sealing surface or a plastic O ring tool whenever removing O rings Do not attempt to perform these disassembly procedures using a metal O ring removal tool Doing so permanently damage the delicate sealing surfaces of plastic parts requiring their replacement 1 Ifthe low pressure hose is connected to the second stage turn the knurled
42. sonnel who have re ceived factory authorized training through either an Aqua Lung or Interspiro Service amp Repair Seminar If you do not completely understand all of the procedures outlined in this manual contact Aqua Lung or Interspiro to speak directly with a Technical Advisor before proceeding any further Warnings Cautions amp Notes Pay special attention to information provided in warnings cautions and notes that are accompanied by one of these symbols A WARNING indicates a procedure or situation that may result in serious injury or death if instructions are not followed correctly A CAUTION indicates any situation or tech nique that will result in potential damage to the product or render the product unsafe if in structions are not followed correctly A NOTE is used to emphasize important points tips and reminders Scheduled Service Because the Divator II Full Face Mask complete with a first and second stage is considered to be a life supporting product it is extremely critical that it receives service according to the procedures outlined in this manual on a regularly scheduled basis at least once a year with normal or infrequent use NOTE A unit that receives heavy or frequent use such as in rental instruction or commer cial applications should be serviced at least twice each year or more often depending on the conditions of use and the manner in which itis maintained Refer to the care and
43. t to reuse d Remove the O ring 22 1 from the positive pressure switch and discard If the switch was found to be in reusable condition set it aside 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual BREATHING VALVE MODULE 22 23 24 25 26 27 28 29 30 31 While holding the control valve assembly 25 and the inlet chamber 40 secure gently spread the ends of the retaining ring 39 and pull it off to separate the inlet chamber from the control valve and main valve assemblies Examine the retain ing ring for any signs of cracking or breakage and set it aside if it is in reusable condition Remove and discard both O rings 41 amp 42 from the inlet chamber Using a small penlight closely examine the inlet chamber to ensure that there are no signs of damage or per manent corrosion inside particularly around the sealing surface of the inlet orifice If permanent corrosion or damage is found on the sealing surface the inlet chamber must be replaced and cannot be reused Hold the control valve 25 and main valve 35 assemblies between thumb and forefinger with the retaining pin 29 facing down Squeeze the control valve body 28 and the P main valve assembly together to relieve spring tension and apply the pin of the seat extraction tool P N 1094 36 to press out the retaining pin See Fig 7 Slowly lift the control valve assembly off the control valve fl
44. to mark the point that the water level reaches as the valve begins to open NOTE The breathing valve must open before the water level inside the tubing A rises higher than the bottle rim 40mm water column but not before the water level has risen at least 15mm If the opening effort does not meet these specifi cations refer to the Troubleshooting Guide Table 1 and correct as needed 5 AIR FLOW TEST Non Positive Pressure This test is used to check the flow capacity of the complete regulator first and second stage and ensure that the system can supply airflow exceeding a minimum of 300 liters per minute flow at extreme demand NOTE If the second stage will be used with surface supplied air it will be necessary to test the second stage while connected to the low pressure supply hose to ensure that the pressure differential caused by the length of the hose does not seriously impair its performance a Remove the measuring housing from the second stage and fit the smaller flanged opening into the large end of the plastic connecting tube Then fit the connecting tube directly over the non return inlet valve of the second stage b Feed the clear tubing into the bottle until the weighted end touches the bottom c While holding the second stage horizontal fully depress the purge button Closely watch the end of the tubing to determine whether bubbles escape indicating that the airflow exceeds 300 liters per minute NOTE Ift
45. to a first stage with the same stable intermediate pressure no creep that the mask was previously adjusted for between 90 160 psi Check to ensure there are no open ports or hoses 2 Examine the second stage housing below the exhaust valve assembly to determine whether it is assembled with a positive pressure switch or a rubber sealing plug see Fig 1 A 3 If the mask is configured for positive pressure turn the posi tive pressure switch to the OFF position nearest to the second stage housing see Fig 2 4 Connect the first stage to a cylinder that is filled with 3 000 psi and slowly open the cylinder valve to pressurize the mask cn ai re 5 Listen closely to check for any signs of leakage from the ie EE second stage If necessary immerse the mask in water to NonPositive a locate the source of any leakage detected and refer to Table 1 Troubleshooting to determine its possible cause CAUTION Ifthe second stage freeflows uncontrollably immediately shut the cylinder valve and proceed directly to the Disassembly Procedure Do not attempt to further inspect the regulator while pressurized 6 Depress the purge button to determine whether sufficient airflow is provided to clear the mask of water If the second stage is configured for positive pressure the positive pressure switch should automatically trip to the ON position accom panied by a steady flow of air 7 Release the purge button and reset the po
46. urge button Sealing sleeve 27 is damaged or improperly seated Refer to troubleshooting guide for specific model of first stage Check both gap measurements and readjust per instructions Remove valve module and re assemble per instructions Inspect and reassemble as needed Replace sealing sleeve with new External air leakage Intermediate pressure hose loose 2 O ring 42 damaged or decayed 3 O ring 16 damaged or decayed 4 Balancing diaphragm 37 punctured or improperly seated Tighten knurled fitting snug onto second stage 2 Replace O ring with new 3 Replace O ring with new Replace balancing diaphragm with new Water entering second stage O ring 19 or 41 damaged or decayed Sealing disk 8 damaged or contaminated Control diaphragm 14 damaged or decayed O ring 16 improperly seated dam aged or decayed Non return inlet valve diaphragm 20 damaged or improperly seated Valve housing 21 damaged Disassemble and replace O ring Clean or replace sealing disk Replace diaphragm with new Replace O ring with new Inspect non return valve and re seat or replace as needed Replace valve housing with new 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 23 Table 2 Recommended Tool List PART NO DESCRIPTION APPLICATION 3007 82 Lever Height Measu
47. ush pad and set it aside if it is found to be in reusable condition 6 Carefully remove both of the non return valve retainers 13 from the oral nasal inner mask 15 Remove and discard each diaphragm 14 and replace with new Be careful to avoid stretching the new diaphragms and check each one to ensure it is seated evenly over its retainer Fig 25 Removal of Push Pad 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 19 7 If removal or replacement of the oral nasal inner mask or its manifold 17 is necessary apply a medium blade screwdriver to each screw 9 of the push pad support and turn them counter clockwise to loosen and remove Set the support and both screws aside 8 Pull back the chin cup of the mask body 2 to expose the screw 16 at the bottom of the inner mask manifold Apply a medium blade screwdriver to the screw and turn counter clockwise to loosen and remove Set this screw aside together with the screws and push pad support noting that it is shorter in length than the other two screws 9 Pull the oral nasal inner mask straight away from the mask body and carefully separate the inner mask from the mani fold Inspect the condition of the inner mask to check for any blemishes tears cuts distortion or signs of deterioration Discard the inner mask if any damage or deterioration is found which may prevent it from sealing properly Other wise set it aside for cle
48. worn on face Divator Il Full Face Mask Service amp Repair Manual Table 1 Troubleshooting Guide POSSIBLE CAUSE Positive pressure switch 22b is set to the ON position High first stage intermediate pressure in excess of 175 psi Retaining collar 43 not fastened snug Lever support 26 is adjusted incor rectiv too high or lever 24 is bent Adjusting nut 31 is adjusted incor rectiv with insufficient spring tension Exhaust valve assembly 1 is incor rectly aligned with lever Valve seat 38 damaged or worn Inlet chamber 40 sealing surface damaged TREATMENT Reset switch to OFF position and retest Refer to troubleshooting guide for specific model of first stage Hand tighten retaining collar onto valve housing until snug Inspect lever height and readjust lower or replace as needed Readjust the adjusting nut to increase spring tension Remove the exhaust valve as sembly from the valve housing and reassemble per instructions Replace valve seat assembly with new Replace inlet chamber with new Low purge or excessive work of breathing full cylinder Low intermediate pressure less than 90 psi Lever support 26 or adjusting nut 31 adjusted incorrectly Retaining ring 39 incorrectly installed on inlet chamber and control valve Purge spring 6 incorrectly installed onto p
49. y If it is set too low the airflow may be restricted and the opening effort may become excessive The objective of this adjustment is to set the lever at the correct height and with the correct amount of play to provide optimum airflow capacity and minimal inhalation resistance After removing the breathing valve from the housing it will be necessary to remove the valve module from the inlet chamber and disassemble the control valve from the main valve assembly The lever support can then be adjusted as follows a Pull the lever slightly out from the lever support and hold it stationary to maintain its correct alignment with the control valve body while turning the lever support b Turn the lever support clockwise to lower the lever height and increase the play or counter clockwise to raise it and decrease the play no more than 180 degrees in either direction c Reassemble the valve module with the valve housing and repeat Fig 24 Interspiro Mini Test Kit the test to determine whether further adjustment is necessary P N 3007 81 1998 Aqua Lung America Inc Divator Il Full Face Mask Service amp Repair Manual 15 1 LEAKAGE TEST a Connect the second stage assembly to the first stage with which it will be used adjusted to provide a stable intermediate pressure of between 90 140 psi via the LP hose Ensure that the hose is securely connected at both ends NOTE If the second stage is configured
50. y fine increments to avoid over adjusting and losing the starting point of reference Adjustment A Sealing Spring The sealing spring adjust ment primarilv affects the opening effort required to initiate air flow but it can also affect the airflow capacitv The objective of this adjustment is to ensure that there is only enough spring tension to cause the valve seat to seal against the cone inside the inlet chamber without causing excessive inhalation resistance To perform this adjustment it is not necessarv to disassemble the breathing valve module After removing the valve module from the housing the nut can be turned in either direction bv applving the pin of the seat extraction tool or a jeweler s screwdriver through Fig 23 Preliminarv Adjustment Settings either circular port of the inlet chamber To increase the tension of the sealing spring and the gap measurement screw the adjust ment nut counter clockwise toward the spring or unscrew the nut clockwise away from the spring to decrease the tension b 0 7mm a 1 5mm Adjustment B Lever Support The lever support can be adjusted to set the lever s height and range of movement The lever s range of movement or play is critical because it deter mines the distance that the valve can open and thus can limit the volume of air that flows from it at peak demand If the lever is set too high however it may cause the regulator to freeflow undesir abl
Download Pdf Manuals
Related Search