Sherwood Scuba SR2 User manual

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SHERWOOD SCUBA
USER’S MANUAL

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Thank you for choosing the Sherwood SR2 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 SR 2 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 User’s Manual contains signal words that are intended to designate
levels of hazardous conditions. These signal words and their designations
are as follows:
WARNING - Indicates a potentially hazardous condition or situation
which, if not avoided, could result in death or serious injury.
CAUTION - Indicates a potentially hazardous condition or situation
which, if not avoided, may result in minor or moderate injury.
NOTICE: Is used to address practices not related to personal injury.

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WARNING
Sherwood Scuba equipment is to be used only by individuals trained and
certied by a nationally recognized scuba training agency. Diving without
the necessary training in safe diving procedures or without observing the
practices outlined by your training agency for your level of certication is
extremely hazardous and could result in death or serious injury. The contents
of this manual are not a satisfactory substitute for certied scuba instruction.
WARNING
Specialty Diving: This Sherwood Scuba regulator is designed to perform
under demanding conditions. However, before you attempt to participate
in specialized diving activity you must receive appropriate training in that
specialty. Failure to receive training and to master the skills required for
these advanced activities could subject you to conditions that could result
in death or serious injury. Some examples of advanced diving activities
include, but are not limited to:

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Deep Diving - Deeper than the generally recognized recreational diving
limit at 135 feet of seawater.
Decompression Diving - At combined depth and duration exposures
requiring mandatory decompression stops.
Cold Water Diving - Diving in water temperatures less than 50° F (10°
C) may require special techniques to avoid conditions that could result in
freezing conditions inside regulators and valves. Training should include
problem avoidance techniques and emergency procedures for dealing with
uncontrolled gas ow from the regulator or valve.
Cave or Wreck Diving - Diving in any situation that provides an overhead
environment requires knowledge of the hazards associated with such an
environment and specialized conguration of your diving equipment
including the proper set up of the alternate breathing supply. Failure to
observe recommended practices could result in death or serious injury.

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WARNING
Nitrox: This Sherwood regulator is manufactured for use with standard air
or enriched air nitrox (EAN) with an oxygen component not to exceed 40%
at a maximum pressure of 3500 psi (240 BAR). If the regulator is used with
standard air at any time it may no longer be suitable for use with nitrox
unless it is reconditioned for nitrox use by a dealer or other expert trained in
the proper cleaning methods. Reconditioning involves cleaning to remove
residual hydrocarbons that may have been introduced through exposure to
standard air. Failure to properly clean the regulator may increase the risk of
re when used with nitrox. Such risk could result in death or serious injury.

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CAUTION
Chemicals and Lubricants: Do not use any lubricants on your regulator
between service check-ups. No additional lubrication is required and use
of an improper lubricant could introduce conditions adverse to respiratory
health or increase the risk of re hazard.

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INITIAL SET UP
Take time to register your ownership of your new SR2regulator at
www.SherwoodScuba.com
Registration is necessary to participate in Sherwood’s free service parts
program and to receive product update notices. In order to qualify for
free service parts every 24 months you must 1) Purchase your SR2from an
Authorized Sherwood Dealer. 2) Register your SR
2
via SherwoodScuba.
com within 30 days following purchase, including the serial numbr of the
product. 3) Have your SR
2
inspected annually by an Authorized Sherwood
Scuba repair facility and retain proof of inspection. 4) Obtain a complete
overhaul service at intervals not to exceed 24 months or 300 hours of use.
5) Present your origianl receipt of purchase to an Authorized Sherwood
Scuba Dealer at the time of service.
When your regulator is serviced by an Authorized Sherwood Dealer we
will provide one set of service parts at no charge. The cost of labor to
perform the service is not included and is the responsibility of the customer.
Your Authorized Sherwood Dealer is an excellent resource for setting
up your regulator for use. Installation of important ancillary devices such
as the submersible pressure gauge, alternate air source and buoyancy
compensator supply requires specic knowledge on proper installation with
the SR2 and this task should be left to a qualied technician.

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CAUTION
After your SR2 and associated equipment has been congured, be certain
to assemble the unit to a diving cylinder and perform a simple test dive
in shallow water in a controlled environment such as a pool to verify that
the system performs normally and you are familiar with its operating
characteristics. Such a test dive may expose potential problems before you
arrive at your dive site and avoid potentially disappointing or hazardous
circumstances.
Before Each Dive
Inspect your regulator and all associated equipment for loose or missing
parts or evidence of damage. Do not use the regulator until loose or
damaged parts are repaired or properly adjusted.
Test the regulator by breathing through it at the surface before entering the
water. Operation of the purge valve alone does not adequately check the
regulator for proper operation.

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OPERATION
NOTICE : The SR2 rst stage is designed with a dry sealed spring chamber
to keep water and other substances out of the interior of the rst stage.
This not only reduces interior corrosion of the rst stage, it prevents ice
formation in the spring chamber in cold water diving situations. Many
regulators require an after purchase modication to achieve these benets.
It is already included with the SR2as a standard feature.
The SR2 rst stage has a sealed diaphragm that allows the transmission of
water pressure to the internal mechanism.

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Sealed Diaphrgm

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ADJUSTMENT DURING THE DIVE
The SR2has only one user adjustment. Adjusting the second stage knob
affects both the initial breathing effort and the venturi assisting effect. The
operation of the knob is the same as most regulators of this type. The
easiest way to remember the operation is to think of the wheels on a car.
You turn the knob clockwise to “roll back” the performance.
Also, note that when the knob is “rolled back” to minimum performance it
is fully “IN” and when it is “rolled forward” to maximum performance it is
fully “OUT”.
IN: Minimum Performance OUT: Maximum Performance

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Forward = Maximum
Performance
Second Stage
Adjustment Knob
Back = Minimum
Performance

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When diving at the surface or when the regulator is out of the water, it is
important to adjust the regulator sensitivity to the least sensitive position
(rolled back, fully “IN”) to stop the venturi assisting effect and minimize the
possibility of uncontrolled free ow of air.
While diving, it is recommended that the regulator be operated at the
greatest sensitivity available without causing the regulator to free ow.
Breathing with greater resistance will not conserve air and, in fact, may
result in more work and increased air consumption.
AFTER THE DIVE
As soon as possible after the day’s diving activity, it is recommended
that the regulator be thoroughly rinsed in fresh water WHILE IT IS STILL
PRESSURIZED. Rinsing while pressurized will prevent the introduction of
contaminants into the sealing areas of the regulator and preserve reliability.
If it is not possible to rinse while pressurized, be certain to keep water and
contaminants away from the regulator rst stage inlet. Dry the inlet area
and the inside of the dust cap, then securely replace the dust cap before
attempting to rinse the regulator. Do not operate the purge while rinsing.
Operating the purge opens the second stage valve and increases the risk of
contaminants entering the second stage valve system.

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STORAGE
Be certain the regulator is dry before storage to minimize opportunities for
bacteria or fungal growth. Although the regulator will tolerate short periods
of temperature extremes between -4° F and 160° F (-20° C and 70° C), it
should be stored inside a regulator bag at room temperature and away
from sunlight (UV) exposure to maximize the life of the seals and other
components.
AUTHORIZED SERVICE
In order to maintain the product warranty and optimum performance your
Sherwood regulator must be inspected annually and receive service from
an Authorized Sherwood Scuba Dealer every 24 months or 300 hours
of use, whichever comes rst. Service includes disassembly, cleaning,
replacement of o-rings and lubrication as necessary and adjustment for
optimal performance.
If you need assistance in locating an Authorized Sherwood Scuba Dealer
for service contact us at www.SherwoodScuba.com.

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LIMITED LIFETIME WARRANTY
Sherwood Scuba warrants that the SR2model regulator purchased from
Authorized Sherwood Dealers shall be free of defects in workmanship and
materials for the lifetime of 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.
In order to use this warranty you must provide proof of purchase from
an Authorized Sherwood Scuba 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 verication.

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Under certain circumstances you may be eligible for free service parts.
Consult your Authorized Sherwood Dealer to determine your eligibility.
indirect damages arising out of use of your Sherwood regulator.
Warranty laws in your state may a your rights and should be consulted
if you believe the terms of the warranty do not apply to you.
To qualify for the free service parts program you must:
1) Purchase your SR-2 from an Authorized Sherwood Scuba Dealer.
2) Register your SR-2 via Sherwoodscuba.com within 30 days following purchase
including the serial number of the product and name of original purchaser.
3) Obtain an inspection of the SR-2 annually by an Authorized Sherwood Scuba repair
facility and retain proof of inspection.
4) Obtain a complete service including a product overhaul by an Authorized Sherwood
Scuba Repair Facility at intervals not exceeding 24 months or 300 hours of use.
5) Present a copy of the original sales receipt and proof of annual inspection.
Note: Free parts program does not include the cost of labor to service.

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Purchase Date: _____________
First Stage S/N:____________________________________________________
Second Stage S/N:_________________________________________________
SERVICE RECORD
Dealer_______________________________________ Date: _______________
Address __________________________________________________________
__________________________________________________________________
Service Technician Signature ________________________________________
Dealer_______________________________________ Date: _______________
Address __________________________________________________________
__________________________________________________________________
Service Technician Signature ________________________________________
Dealer_______________________________________ Date: _______________
Address __________________________________________________________
__________________________________________________________________
Service Technician Signature ________________________________________

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Dealer_______________________________________ Date: _______________
Address __________________________________________________________
__________________________________________________________________
Service Technician Signature ________________________________________
Dealer_______________________________________ Date: _______________
Address __________________________________________________________
__________________________________________________________________
Service Technician Signature ________________________________________
Dealer_______________________________________ Date: _______________
Address __________________________________________________________
__________________________________________________________________
Service Technician Signature ________________________________________
Dealer_______________________________________ Date: _______________
Address __________________________________________________________
__________________________________________________________________
Service Technician Signature ________________________________________

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