Sherwood Scuba Magnum Pro SRB9350 User manual
SHERWOOD
OWNER’S MANUAL
MAGNUM
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MORE RESISTANCE
LESS RESISTANCE
Magnum Regulator
SRB9350
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Thank you for choosing the
Sherwood Magnum Regulator.
To get the most satisfying use of this product, please take time to read this entire manual to
understand the use and limitations of the product before you attempt to use it. If you have
any questions contact your Authorized Sherwood Scuba Dealer for immediate attention or you
may contact us at www.SherwoodScuba.com.
This manual uses standard signal words and symbols to communicate the presence of possible
hazards. The denitions of these indicators are as follows.
WARNING
Indicates a potentially hazardous condition or situation which, if not
avoided, could result in serious personal injury or death.
CAUTION
Indicates a potentially hazardous condition or situation which if not avoided
may result in moderate or minor injury. It may also be used to alert against
practices that may cause harm or permanent damage to equipment.
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TABLE OF CONTENTS
WARNINGS AND PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . .5–7
a. Training requirements
b. Service requirements
c. Nitrox use
d. Cold water use
INITIAL SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
BEFORE THE DIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8–9
DIVING WITH THE REGULATOR . . . . . . . . . . . . . . . . . . . . . . . . .9
AFTER THE DIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
STORAGE AND DEALER SERVICE . . . . . . . . . . . . . . . . . . . . . . .10–11
WARRANTY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .11–12
PRODUCT REGISTRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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PLEASE READ CAREFULLY BEFORE ATTEMPTING TO USE THIS EQUIPMENT
WARNING
1. Sherwood Scuba equipment is intended for use only by persons trained and certied by a
nationally recognized scuba training agency. Diving without the specic training including safe
diving practices and within the limits dened by the training agency exposes the user to extremely
hazardous situations that could result in serious personal injury or death. This manual is not a
substitute for the instruction needed to dive in a safe manner.
2. Sherwood regulators must not be serviced by anyone untrained. To perform the correct service
or repair procedures, return your equipment to an Authorized Sherwood Dealer. Any time the
equipment appears to be performing incorrectly or when recommended service is needed, return
your equipment to an Authorized Sherwood Dealer.
Do not attempt to disassemble or modify the equipment. Equipment that is not properly serviced
could lead to a malfunction during use with possible personal injury or death.
3. Nitrox use (Enriched Air Nitrox) – Requires specialized training to avoid hazards that could lead
to serious injury or death. Be certain to read the information in this manual concerning Nitrox use.
4. Cold water use – Diving in water temperatures less than 50°F (10°C) can impose operational
limits aecting the reliable operation of the equipment. If you plan to use your Sherwood regulator
in water temperatures less than 50 F ( 10 C), you are advised to rst obtain training in the diving
techniques that apply to cold water diving. This training must include appropriate methods that
reduce the opportunity for ice formation whenever high air ow is expected. This training must also
include the appropriate emergency response for dealing with a regulator free ow associated with
ice formation in the regulator interior.
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WARNING
ENRICHED AIR NITROX (EAN)
The Sherwood Magnum (SRB9350) regulator has been designed and manufactured for use
with clean air or Nitrox mixtures containing no more than 40% oxygen.
Preparation for use with oxygen enriched gas mixtures requires the proper selection of
compatible materials and clean manufacturing practices that minimize the presence of
combustible materials inside the regulator. Your Sherwood regulator has been manufactured
observing these requirements.
Use of Enriched Air Nitrox (EAN) exposes the user to additional risks that
are not present when diving with standard air. Breathing EAN under pressure
requires a full understanding of these risks and requires specic instruction
beyond that taught in basic scuba training.
Additionally, equipment exposed to EAN must be congured and maintained
properly to avoid the risk of re associated with use of oxygen enriched gases.
Failure to understand and avoid these risks may lead to serious personal
injury or death.
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In order to maintain the necessary level of cleanliness Sherwood recommends that the regulator
be dedicated to Nitrox use only.
However, if you wish to use the regulator with Nitrox and air interchangeably, you must exercise
care to pass only clean air through the regulator. The level of cleanliness must be such that
it contains condensed hydrocarbons of not more than 0.1 mg/ liter. If you are uncertain as to
whether the air you expect to use meets this cleanliness requirement it is recommended that
you avoid air use or have the regulator cleaned for EAN service before exposure to EAN.
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INITIAL SET UP
Your Sherwood regulator provides options for the attachment of accessories such as the
submersible pressure gauge or dive computer, the buoyancy compensator inator air supply
and the alternate air source (octo).
Sherwood recommends that you consult your Authorized Sherwood Dealer to install these
accessories for you.
BEFORE THE DIVE
It is important to inspect the regulator before starting your dive trip and again just before you
enter the water. The pre-dive check should consist of at least the following steps.
1. Carefully inspect all hoses for signs of damage. This may require you to retract the
hose protectors at the ends of the hoses to examine the hose condition near the end
ttings. If the hose is damaged have your Authorized Sherwood Dealer replace it
before you dive.
2. Visually inspect the entire regulator for signs of damage. If in doubt ask your
Authorized Sherwood Dealer to assist you in performing this examination.
3. Connect the regulator to a pressurized cylinder and press the purge button several
times to conrm air ow. Take a few test breaths. The eort to breathe should be
minimal. If there is an unusual breathing resistance, have your regulator checked by a
professional instructor or by your Authorized Sherwood Dealer before attempting to
enter the water.
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DIVING WITH THE REGULATOR
WARNING
4. Once pressurized, do not attempt to reposition the rst stage to achieve a dierent
hose orientation. Further, do not attempt to carry the assembly by the hoses or by
using the installed regulator as a handle for lifting the cylinder. This may damage
components and compromise your dive.
5. The Magnum regulator provides the user with a device to control the venturi assist
that is intended to decrease inhalation resistance at high ow rates. The maximum
assist or least resistance is present when the switch is rotated clockwise toward the
mouthpiece of the second stage. The venturi assist is reduced (breathing resistance is
increased) when the switch is rotated counterclockwise toward the front of the second
stage. When the venturi assist is reduced the regulator will be more stable when the
second stage is unattended. When the user is breathing the switch should be in the
least resistance position.
You must be aware of and observe special measures for diving in cold water
at temperatures below 50°F (10°C) in order to minimize the risk of regulator
freezing. Training must include emergency measures for dealing with regulator
free ow. Failure to obtain the necessary training and mastery of the skills
needed before diving in cold water could lead to hazardous conditions with
possibility of serious personal injury or death.
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Your Sherwood regulator has been designed to provide an ample air supply with minimal
resistance. This should provide you with many hours of comfortable diving. However, if you
feel the breathing for any reason is labored or distressing do not continue to dive. Have the
regulator evaluated by your Authorized Sherwood Dealer before continuing to dive with it. The
initial opening eort required to start air ow with inhalation is intentionally set low to provide
you with eortless breathing. You may also unintentionally start air ow if you impact the
second stage upon entry or suddenly remove the regulator from your mouth during inhalation.
Sometimes this will cause the regulator to continue to ow. If this occurs, simply cover the
mouthpiece opening with your thumb or replace the regulator in your mouth. The ow should
stop. If it does not, then you must terminate the dive and have the regulator examined.
AFTER THE DIVE
The best time to clean your regulator is as soon as possible after concluding diving activity for
the day. Delayed rinsing of the equipment increases the opportunity for corrosion or deposits
to form which eventually may degrade performance of the regulator.
If possible, you should rinse the regulator while it is still pressurized. This minimizes opportunities
for contaminants to reach interior passages of the regulator.
If you are not able to leave the unit pressurized for rinsing, then be certain to replace the
rst stage inlet protector (Dust Cap) before rinsing. During the rinsing process do not depress
the second stage purge as this will open the demand valve and provide an opportunity for
contaminants to enter the valve sealing area. Dry the regulator before long term storage.
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STORAGE
Once the regulator is dry, store the regulator in a container that will minimize exposure to dirt,
chemicals, or ultraviolet light. Storage near electrical equipment such as motors, computers
and other appliances exposes the regulator to ozone which can prematurely deteriorate certain
seals and rubber parts.
DEALER SERVICE
It is strongly recommended that the regulator be inspected by an Authorized Sherwood Dealer
at minimum annually or anytime you suspect that performance has decreased or damage may
be present. This could reveal an issue that can be resolved before reaching a dive destination.
It is also recommended that your regulator receive a factory recommended service overhaul
every other year or after 300 hours of use, whichever comes rst. Your regulator may need
service sooner depending on the severity of the environmental conditions or level of user care
and cleaning.
With each service your Authorized Sherwood Scuba Dealer is required to register the service at
www.SherwoodScuba.com. Ask your dealer to print a copy of the service registration to keep
as a record of your service.
If the regulator is used for rental or training purposes, it will require complete overhaul and
factory prescribed service every three to six months. Chlorinated swimming pool water is an
especially damaging environment for SCUBA equipment, due to the high levels of chlorine and
pH balancing chemicals that cause certain components to rapidly deteriorate.
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LIMITED LIFETIME WARRANTY
In order to use this warranty, you must provide proof of purchase from an Authorized Sherwood
Dealer. Save your receipts as proof of purchase. If you are unsure as to whether a dealer is
authorized, contact us at www.SherwoodScuba.com for verication.
Sherwood Scuba warrants that the Sherwood regulator purchased from Authorized Sherwood
Scuba Dealers shall be free of defects in workmanship and materials for the lifetime of the
regulator to the original purchaser.
Under this warranty Sherwood will either repair or replace, at its sole option, any original parts
that fail to perform as intended. This warranty excludes products subject to abuse, neglect,
alterations or improper unauthorized service. Warranty also excludes parts subject to wear such
as hoses, mouthpieces, seals and metal parts with mild corrosion from exposure to seawater.
Under this warranty plan Sherwood will replace warranted parts but the labor to replace parts is
excluded and the responsibility of the owner. To maintain your Parts Warranty please have your
Authorized Dealer register each Inspection and Service at www.SherwoodScuba.com.
PRODUCT REGISTRATION
Please register your regulator at www.SherwoodScuba.com.
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RESTRICTIONS
1. This warranty does not cover normal wear. Factory prescribed service by an Authorized
Sherwood Scuba Dealer is required at minimum annually.
2. This warranty does not extend to damages caused by improper use, improper maintenance,
neglect, unauthorized repairs, modications, accidents, re or casualty.
3. Cosmetic damage, such as scratches, dents, and nicks are not covered by this warranty.
4. This warranty does not extend to equipment used for rental, commercial, or military purposes.
5. This warranty covers products purchased in the United States. For warranties that may apply
elsewhere, please contact your local representative.
6. Failure to meet any of the above requirements will render the warranty null and void.
RETURNING YOUR REGULATOR FOR SERVICE
Whenever your regulator requires annual service or warranty repair, Sherwood requires that you
bring it or send it to your nearest authorized Sherwood dealer.
If you need to return products covered by this warranty, please provide your dealer with
photocopies of your original sales receipt, and ask them to print a copy of the service records
that are maintained at www.SherwoodScuba.com.
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CE INFORMATION
ISO9001:2008, the CE mark, EN250:2014, EN 13949:2003, EN 144-3, EN 12021 -what it all means.
Many products sold in the European Union (EU) are required to be certied under Article 10 to
meet standards meeting the Basic Health and Safety Requirements of the European Personal
Protective Equipment Directive 89/686/EEC. In addition, the manufacturing company must be
certied under Article 11 of the Directive. Article 11B certication uses a quality management
system approach which includes many of the clauses of ISO 9001.
All products sold by SHERWOOD in the EU meet these requirements. SHERWOOD works with
an accredited agency, called a Notied Body, named SGS United Kingdom Limited. SGS audits
our manufacturing processes and witnesses testing to the requirements of the standards and
inspects product documentation and marking to assure full compliance with the standards.
So, it is with considerable pride that we say: EC Type examination conducted by: SGS United
Kingdom Ltd, Weston - super- Mare, BS22 6WA, UK, Notied Body No. 0120.
EN250:2014 is the standard describing certain minimum performance requirements for SCUBA
regulators sold in the EU. EN250:2014 testing is performed with air to a maximum depth of 165
FSW I 50 MSW. Testing identies regulators that should not be used in water colder than 50°F
I 1 0°C, these regulators are marked “> 1 0°C”.
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Components of Self Contained Underwater Breathing Apparatus as dened by EN250:2014 are:
• Cylinder(s) with cylinder valve(s);
• Demand regulator;
• Pressure indicator;
• Facepiece;
• Carrying system.
Scuba congured for use by more than one diver at the same time, an auxiliary breathing
system, shall not be used deeper than 30 meters and in water temperatures colder than 4°C if
marked “EN250A” and less than 10°C if marked with “EN250A >10°C”
EN 13949:2003 is the standard that describes special qualication testing for regulators that
are to be used with gasses whose oxygen content is greater than 22%. Regulators that have
passed testing are marked NITROX/02.
EN 144-3 describes the M26 regulator inlet tting and M26 valve that must be used with gasses
containing over 22% oxygen sold in the EU. These inlet ttings and valves are marked with the
maximum rated working pressure.
EN 12021 is a standard that species the allowable contaminates and component gasses
that make up compressed air. This standard is the equivalent of the USA Compressed Gas
Association’s Grade E air. Both standards allow very small amounts of contaminants that are
not harmful to breathe, but can cause a problem if present in systems using gasses with a high
percentage of oxygen.
SHERWOOD regulators are CE certied to a maximum operating depth of 50 M ( 165 FT).
• Auxiliary breathing system;
• Lifting harness;
• Depth/time measuring device;
• Additional safety device(s);
• Voice communication system.
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