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Sherwood SRB5300 - page 1
As sembly & Maintenanc e Guide (SRB53 00) (SRB5900) (SRB5700) (SRB5100) ® ™ ® REGUL A T ORS ® ® ...
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Sherwood SRB5300 - page 2
FIRS T ST AGE - OA SIS™ SRB5700, BLIZZARD™ SRB5900, MAGNUM® SRB5300, BRUT™ SRB5100 T o determine the first stage of a particular regulator , compare the r egulator with the pictures and diagrams in this guide. The model number of the regulator is laser stamped on the first stage between two of the outlet ports. For further information, conta ...
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Sherwood SRB5300 - page 3
T ABLE OF CONTENTS Page 1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 2.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 2.1 SRB5700 (Oasis), SRB5900 (Blizzard), SRB5300 (Magnum) . . 3 2.2 SRB5100 (Brut) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Sherwood SRB5300 - page 4
1 1.0 INTRODUCTION 1. The procedur es in this manual apply to the Sherwood Scuba SRB5900 Blizzard, SRB5700 Oasis, SRB5300 Magnum and SRB5100 Brut regulators only . The older SRB3900 Blizzard, SRB3700 Oasis, SRB3300 Magnum and SRB2100 Brut regulators have dif ferent part and service procedur es. They have their own manuals that are to be used for gu ...
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Sherwood SRB5300 - page 5
6. Companion instructional VHS videotapes to this and other Sherwood Scuba repair manuals ar e available from Sherwood Scuba at a nominal cost. Ask your Sherwood Scuba Sales Representative for details. 7. If you have any questions, or need more information, contact your Sherwood Scuba Sales Representative or Sherwood Scuba Customer Service. 2 ...
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Sherwood SRB5300 - page 6
2.0 SPECIFICA TIONS 2.1 SPECIFICA TIONS FOR THE SRB5900 BLIZZARD, SRB5700 OASIS, AND SRB5300 MAGNUM REGULA TOR MODEL: Sherwood SRB5900 Blizzard, SRB5700 Oasis, SRB5300 Magnum AIR FLOW: 33 cu. ft. (935 liters)/min. @ 1 atmosphere INHALA TION RESIST ANCE: .9" (2.3 cm) w .c @ 1 atmosphere EXHALA TION RESIST ANCE: 0.7" (1.8 cm) w .c. max. @ 1 ...
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Sherwood SRB5300 - page 7
2. 2 SPECIFICA TIONS FOR THE SRB5100 BRUT REGUL A T OR REGULA TOR MODEL: Sherwood SRB5100 Brut AIR FLOW: 30 cu. ft. (850 liters)/min. @ 1 atmosphere INHALA TION RESIST ANCE: 1" (2.5 cm) w .c @ 1 atmosphere EXHALA TION RESIST ANCE: 0.7" (1.8 cm) w .c. max. @ 1 atm. RECOMMENDED LUBRICANT : L TI Christo-Lube ® A . First Stage Regulator: TYP ...
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Sherwood SRB5300 - page 8
3.0 O-RINGS REFERENCE CHART 1. Before you begin disassembly of the r egulator , test the first and second stages for output pressur es and leakage. Pre-testing in this way will help the technician to pinpoint any specific problems r equiring repair . 2. The work area must be clean and well lighted, with clean compr essed air available to blow sand ...
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Sherwood SRB5300 - page 9
4 .0 FIRS T S T AGE PROCEDURE S 4 .1 T OOLS REQUIRED FOR FIRS T S TAGE SERVICING – Bench vise – 3/32" Allen wrench – 5/32" Allen wrench – 6" or 8" adjustable wrenches – 15" adjustable wrench – Phillips screwdriver – #10 T orx screwdriver – Sherwood 50 cc Graduated Cylinder (p/n TL110) – Sherwood Piston Sea ...
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Sherwood SRB5300 - page 10
4. Install a Sherwood regulator support handle (p/n TL113) into one of the low-pr essure ports. Use the support handle and a 15" adjustable wrench or bench vise to loosen the yoke nut fr om the body . See Photo #1. 5. Remove the yoke and yoke nut from the body . 6. Use a 5/32" Allen wrench to r emove all remaining port plugs from the body ...
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Sherwood SRB5300 - page 11
11. Use a pocket screw driver to r emove the black washer that was beneath the element assembly . Save this washer as it can usually be reused. Be car eful not to scratch the metal surface under the washer . 12. Use a pocket screwdriver to r emove the retaining ring or star washer that holds the inlet filter in place. Older units used a star washer ...
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Sherwood SRB5300 - page 12
The sealing surface on the body where the one-way valve seals must be totally clean of deposits. If any deposits remain on the sealing surface after initial cleaning, take a fine abrasive polishing stick or a pencil with a new eraser and polish the surface to remove deposits (see Photo #3). 15. Blow all residue fr om the body after polishing. 16. R ...
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Sherwood SRB5300 - page 13
4 .3 ASSEMBL Y OF FIRS T S T AGE 1. The part number for each regulator kit can be found in Sherwood ’ s T ools, Repair Kit and Accessories – Assembly & Maintenance Guide . The kits contain the parts that are always replaced at every annual service interval. The kit number for the r egulators covered in this manual is 4000-15. 2. Before inst ...
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Sherwood SRB5300 - page 14
16. If the first stage has a SAA-5300 DIN adapter installed instead of a standard yoke, see the installation instructions given in Sherwood T echnical Bulletin #104 for overhaul and installation instructions of the DIN adapter . 4 .4 TES TING OF FIRST S T AGE A . Before Y ou Begin T esting 1. Install an intermediate pressur e test gauge (p/n TL119) ...
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Sherwood SRB5300 - page 15
C. Intermediate Pr e ssur e T e st 1. Attach any Sherwood second stage to one of the low pressur e ports, and the Sherwood intermediate pressur e gauge (p/n TL119) to another low pressure port. Plug all other ports with appropriate port plugs. 2. Attach the regulator to a tank valve giving a sour ce pressure of between 2700 and 3500 psig (186 and 2 ...
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Sherwood SRB5300 - page 16
13 5.0 SECOND S T AGE PROCEDURES 5.1 T OOLS REQUIRED FOR SECOND S TAGE SERVICING – T wo good quality 6" or 8" (15 or 20 cm) adjustable wrenches – #10 T orx screwdriver – Side cutting pliers – Sherwood In-line Adjusting T ool (p/n TL102) – Sherwood Plastic Probe (p/n TL111) to push out orifice – Sherwood Lever Height Adjusting ...
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Sherwood SRB5300 - page 17
9. Use the Sherwood in-line adjusting tool (p/n TL102) to back the adjusting orifice out of the orifice housing until the threads disengage. Remove the in-line adjusting tool, and push the adjusting orifice the rest of the way out of the orifice housing with the Sherwood Plastic Pr obe (p/n TL111). 10. Remove the O-ring from the adjustable orifice. ...
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Sherwood SRB5300 - page 18
corrosion. Corr osion or minor scratches can be polished out using a fine-grit rubberized polishing stick or a clean new pencil eraser . Do not apply heavy pressure when r otating the polishing stick. Stop polishing immediately after the corrosion or scratch disappears. An orifice will not be accepted for warranty replacement simply because it is d ...
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Sherwood SRB5300 - page 19
8. Tighten the screws using a # 10 T orx screw driver just enough to seat them snugly . There is no reason to turn these screws beyond the first contact point. Do not overtighten . This scr ew is threading into plastic, which will hold well in service but is easily stripped if overtightened. 9. Install the mouthpiece . Be sure to position the mouth ...
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Sherwood SRB5300 - page 20
7. Look across the case and gauge tool. The tip of the lever should be even with the bottom surface of the gauge. If you are r e-using the same major parts of the regulator , this measurement will most likely be corr ect, and no adjustment will be needed. In fact, bending the lever should be avoided unless necessary to get the tip of the lever in t ...
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Sherwood SRB5300 - page 21
11. 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. 12. Return to Section 5.3.4 of this manual to complete assembly of the regulator . 5.5 TES TING OF SECOND S T AGE A . Inhalation Effort Check the inhalation effort of the second stage with a pan of w ...
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Sherwood SRB5300 - page 22
D. External Air Leaks 1. Attach the regulator first stage to a tank short enough to totally submer ge 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 ur n the tank air valve on slowly and then watch for ...
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Sherwood SRB5300 - page 23
6.0 HELPFUL HINTS 6.1 TROUBLESHOO TING REGUL A TORS POSSIBLE CAUSE RECOMMENDED ACTION A . High Inhalation Effort at Depth: 1. Inlet filter clogged. Replace the filter . 2. No air flowing through the dry air bleed system. Check the flow rate coming out of the one-way bleed valve . If no or low air flow is detected, clean the flow element in the pist ...
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Sherwood SRB5300 - page 24
C. W et Breathing: 1. Improper clearing, or diver diving in total Instruct the diver on proper clearing head-down position. technique. 2. Diaphragm improperly installed. Visually check position of diaphragm. 3. Hole in the mouthpiece at tie area. Replace the mouthpiece. 4. Hole in the diaphragm. Replace the diaphragm. 5. Damaged exhaust valve, or e ...
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Sherwood SRB5300 - page 25
6. 2 PARTS CLEANING RECOMMENDA TIONS Regulators which see heavy use, particularly those used in salt water , often require extra ef fort to remove dirt and corr osion from the parts of the regulator . Some suggested cleaning solutions are listed at the end of this section, and ther e are probably many others being used successfully . Here ar e a fe ...
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Sherwood SRB5300 - page 26
mounting the regulator on the tank valve. Slide the hose pr otectors back to inspect the areas of the hose normally covered. Be sur e all hose connections are tight. 2. Before turning on the tank air valve, check to make sure that the yoke nut or DIN connection is tight and the regulator body is aligned pr operly , with no kinks in the hoses. 3. T ...
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Sherwood SRB5300 - page 27
7 .0 TWO YEAR WARRANTY AND MAINTENANCE INFORMA TION 7 .1 PROPER PROCEDURE FOR WARRANTY PAPERWORK 1. For detailed information on the operation of the Sherwood Scuba T wo Y ear Limited Warranty , please refer to Sherwood Scuba T echnical Bulletin #112. Y ou can also contact Sherwood Customer Service if you still have questions about the warranty . 2. ...
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Sherwood SRB5300 - page 28
ITEM # CA T ALOG # DESCRIPTION 1 . . . . . . . . . . . . .5100-7WH . . . . . . . . . . . . . Label Insert for the Brut 1 . . . . . . . . . . . . .5300-7WH . . . . . . . . . . . . . Label Insert for the Magnum 1 . . . . . . . . . . . . .5700-7Y . . . . . . . . . . . . . . . Label Insert for the Oasis (yellow on gray) 1 . . . . . . . . . . . . .5700- ...
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Sherwood SRB5300 - page 29
Printed in the U.S.A on recycled paper Part Number S-MAN2004 Sherwood Scuba, the SS symbol, Oasis, Blizzard, Magnum, Brut and Wisdom are trademarks of Sherwood, Harsco Corporation Gas and Fluid Control Gr oup. All other names are trademarks of their respective owners. ALL PRODUCTS SUBJECT TO CHANGE WITHOUT NOTICE. 6204 Goodrich Road Clarenc e Ctr, ...
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