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Sherwood SRB3600 manual

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Table of contents for the manual

  • Page 1

    As sembly & Maintenanc e Guide (SRB3600) ® ® REGUL A T ORS[...]

  • Page 2

    FIRS T ST AGE - MAXIMUS® SRB3600 ITEM # CA T ALOG # DESCRIPTION . . . . . . . . . . . .SRB3601 . . . . . . . .First Stage Complete 1 . . . . . . . . . . .5105-70 . . . . . . . . .Handwheel Assembly 2 . . . . . . . . . . .3504-6 . . . . . . . . .Star W asher . . . . . . . . . . . .J2790056B . . . . . .Filter Retaining Ring 3 . . . . . . . . . . .13[...]

  • Page 3

    T ABLE OF CONTENTS Page 1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 2.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 2.1 General Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.2 First Stage . . . . . . . . . . . . . . . . . . . . [...]

  • Page 4

    1 1.0 INTRODUCTION 1. This manual is written as a guide to the annual servicing and maintenance of the Sherwood Maximus SRB3600 regulator . 2. This manual gives breakdowns of r egulator parts, equipment specifications, servicing instructions, troubleshooting r ecommendations, and guidelines for proper care of these regulators. The manual is intende[...]

  • Page 5

    2.0 SPECIFICA TIONS 2.1 GENERAL SPECIFICATIONS FOR THE SRB3600 MAXIMUS REGUL A TOR REGULA TOR MODEL: Sherwood SRB3600 Maximus AIR FLOW: 32 cu. ft./min. (850 liters)/min. @ 1 atmosphere INHALA TION RESIST ANCE: 1.1" w .c. (2.8 cm w .c.) @ 1 atmosphere EXHALA TION RESIST ANCE: 0.5" w .c. (1.3 cm w .c.) max. @ 1 atm. RECOMMENDED LUBRICANT : [...]

  • Page 6

    3.0 O-RINGS REFERENCE CHART 3[...]

  • Page 7

    4 .0 SPECIAL FEA TURE S OF THE MAXIMUS SRB3600 REGUL A TOR 4 .1 FIRS T ST AGE FEA TURE S 1 The external adjustability of the first stage allows you to adjust the regulator output to match the type of diving being done. Relatively low outlet pressure (120 psi, 8.3 Bar) helps the regulator resist freezing in cold water diving. Medium outlet pressure [...]

  • Page 8

    BEFORE Y OU BEGIN: Before you begin disassembly of the regulator , test the first and second stages for output pressures and leakage. Pretesting in this way will help you to pinpoint any specific areas requiring repair . Make sure your work area is clean and well lighted, with clean compressed air available to blow sand and dirt from parts. 5.0 FIR[...]

  • Page 9

    5. 2 DISASSEMBL Y Of FIRS T S T AGE T o view all the parts used in the first stage, fold out the front cover of this manual. The circled numbers below refer to the corresponding numbers on the drawing. 1. Use 6" or 8" adjustable wrenches to disconnect all hoses from the first stage. Pull back the hose protector from the inlet end of the h[...]

  • Page 10

    8. Use a regulator support handle and a 15" adjustable wrench or bench vise to remove the cap and pressure adjusting ring as a unit from the main body . Keep the wrench on the adjusting ring flats, not on the cap flats, for this operation. This will ensure that the two units do not separate (see Photo # 3). 9. Use a 15" adjustable wrench [...]

  • Page 11

    b. Use a clean, dry cloth to wipe the piston surface if it needs cleaning. c. Do not put the piston in a cleaning solution or ultrasonic cleaner . If there is any oil on the surface, it will coat the piston. d. A coating of grease or oil will interfere with the air flow through the flow control element in the face of the piston (see Photo #5). It m[...]

  • Page 12

    16. Remove the one-way bleed valve from the body using your fingers or a soft plastic probe. DO NOT use a metal screwdriver or blade since this will scratch the sealing surface against which the bleed valve seals. This scratch may allow water to enter the first stage spring chamber during use. The sealing surface on the body where the one-way valve[...]

  • Page 13

    nicks, scratches, or corrosion at the top of the cone can allow air to pass, which could result in creeping hose pressures. Polish out the defects using a fine abrasive polishing stick. When polishing, apply a light pressure to prevent excessive wear on the cone. Y ou do not need to polish the rough outer edge of the cone; this is not a sealing sur[...]

  • Page 14

    11 9 a greased soft probe, lightly lubricate the first 1/8" of the small bore in the main body where the small piston O-ring will seal. 1 1. Install the pressure adjusting ring/cap assembly onto the body . Hand-tighten the assembly onto the body until it bottoms on the thread. 12. Lubricate the locking Allen screw with silicone grease, and pla[...]

  • Page 15

    12 bubbles. The air entering the cylinder will gradually empty some of the water out of the cylinder . b. After exactly one minute, remove the graduated cylinder from the air flow and raise the cylinder to the surface so that the air/water dividing line inside the cylinder matches the water level outside the cylinder . The measurement at this point[...]

  • Page 16

    13 6.0 SECOND S T AGE PROCEDURE S 6.1 T OOLS REQUIRED FOR SECOND S T AGE SERVING - 5/32" nut driver (if you don't have a 5/32" nut driver , use a 5/16 - 18 x 2" socket set screw) - 5/8" wrench - 3/4" wrench - 1/4" nut driver - Slotted screwdriver - Size "0" square drive screwdriver (such as a Channel Loc[...]

  • Page 17

    b. If the tab has a metal grip ring holding the logo into the cover , grasp the ring with pliers so that squeezing the pliers causes the jaws of the grip ring to open. Pull the grip ring off, and then remove the logo by pulling it from the outside of the case. c. If the logo has a plastic barb built into it, instead of the grip ring, then it is the[...]

  • Page 18

    16. If you need to replace certain parts of the lever assembly (stem, spring, lever , etc.), you can do this by temporarily screwing the orifice housing with the orifice back onto the lever support and assembly (without the plastic case). With these parts screwed together , the locking nut can be removed without all of the components springing apar[...]

  • Page 19

    5. Screw the orifice housing onto the threads of the lever assembly . Use a 3/4" wrench on the orifice housing to tighten them together snugly (70 in. lbs, 7.8 nm). 6. Lubricate and install new O-rings from the annual service kit onto the orifice housing . Note that the larger of the two O-rings goes on the end of the housing closest to the ca[...]

  • Page 20

    18. Install the mouthpiece and the new mouthpiece tie from the service kit. 6.4 SE T -UP OF SECOND S TAGE For the following adjustments, remove the exhaust tee, cover , and diaphragm. 1 T urn the adjusting knob out counter-clockwise all the way , and then in clockwise 1/8 turn. 2. Use a 1/4" nut driver to turn the locking nut counter-clockwise[...]

  • Page 21

    d. Replace the diaphragm. Continue to test the gap between the lever and the diaphragm after each bending until the lever is in the correct position. 10. Return to Section 6.3, Step 13 of this manual (Assembly of Second Stage) to complete assembly of the regulator . 6.5 TESTING Of SECOND S T AGE 6.5.1 Inhalation effort Check the inhalation effort o[...]

  • Page 22

    6.5.4 External Air Leaks 1 Attach the regulator first stage to a tank short enough to totally submerge the first and second stage in your filling station cooling water . 2. With the tank valve still turned off, flood the second stage completely with water , and then position it mouthpiece up. 3. T urn the tank air valve on slowly and then watch for[...]

  • Page 23

    7 .0 HELPFUL HINTS 7 .1 TROUBLE SHOO TING REGUL A TORS POSSIBLE CAUSE RECOMMENDED ACTION HIGH INST ALLA TION EFFORT A T DEPTH: a. Inlet filter clogged. Replace the filter . b. No air flowing through the dry air bleed Check the flow rate coming out of the system. one-way bleed valve . If no or low air flow is detected, clean the flow element in the [...]

  • Page 24

    b. Diaphragm improperly installed. Visually check position of diaphragm. c. Hole in the mouthpiece at tie area. Replace the mouthpiece. d. Hole in the diaphragm. Replace the diaphragm. e. Damaged exhaust valve, or edges of the Replace exhaust valve. exhaust valve not firmly seated on the case. f. Crack in case. Replace case. HUMMING OR BUZZING DURI[...]

  • Page 25

    cleaner , isolate the orifice from the side walls and all other parts. Do this by placing the orifice individually in a plastic cup in the cleaning hopper . This will help prevent mechanical damage to the sealing surfaces of the orifice. Polish the orifice with a clean pencil eraser . Blow off dust and debris after polishing. 5. Due to its unique s[...]

  • Page 26

    4. Never lift the tank/BCD assembly by the regulator or hoses. 5. Surface-test the regulator by breathing lightly through the mouthpiece. Depressing the purge button above the water's surface is not a thorough method for fully testing the function of the regulator . 7 .4 . 2 Post-Dive Car e 1 After the dive, blow all water out of the dust cap [...]

  • Page 27

    24 8.0 TWO YEAR WARRANTY AND MAINTENANCE INFORMA TION 8.1 PROPER PROCEDURE FOR WARRANTY PAPERWORK 1. For detailed information on the operation of the Sherwood Scuba T wo Y ear Limited W arranty , please refer to Sherwood Scuba T echnical Bulletin #112. 2. In most situations, no paperwork will be necessary . The customer will bring his or her regula[...]

  • Page 28

    ITEM # CA T ALOG # DESCRIPTION 1 . . . . . . 3602-16B . . . . . . . . . Cap (for adjusting knob) 2 . . . . . . J12C04045B . . . . . . Screw 3 . . . . . . 19-4006-17 . . . . . . . W asher 4 . . . . . . 3702-16C . . . . . . . . . Adjuster Knob 5 . . . . . . 3602-35 . . . . . . . . . . Cir -Clip 6 . . . . . . 1-3602-15 . . . . . . . . Nut 7 . . . . . [...]

  • Page 29

    Printed in the U.S.A on recycled paper Sherwood Scuba, the SS symbol, Oasis, Blizzard, Magnum, Brut and Wisdom are trademarks of Sherwood, T aylor -Wharton Gas Equipment Division of Harsco Corp. All other names are trademarks of their respective owners. ALL PRODUCTS SUBJECT TO CHANGE WITHOUT NOTICE. 6204 Goodrich Road Clarenc e Ctr, New Y ork 14032[...]