Sherwood Scuba SR1 User manual

User’s Manual

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Thank you for choosing the Sherwood SR1 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 User’s Manual contains signal words that are intended to designate
levels of hazardous conditions. These signal words and their designations
are as follows:
- Indicates a potentially hazardous condition or situation
which, if not avoided, could result in death or serious injury.
- 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.
WARNING
CAUTION

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WARNING
Sherwood Scuba equipment is to be used only by individuals trained and
certified 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 certification is
extremely hazardous and could result in death or serious injury. The contents
of this manual are not a satisfactory substitute for certified scuba instruction.
WARNING
Specialty Diving: The SR1 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 50ºF (10ºC)
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 flow 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 configuration 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: The SR1 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 will 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 fire when used with nitrox. Such
risk could result in death or serious injury.

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CAUTION
Chemicals & 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 a fire hazard.

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INITIAL SET UP
Take time to register your ownership of your SR1 regulator 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 SR1 from an
Authorized Sherwood Dealer, 2) Register your product with serial number
included, 3) Provide proof of service at intervals not exceeding every
24 months.
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 specific knowledge on proper installation with the SR1 and
this task should be left to a qualified technician.

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After your SR1 and associated equipment has been configured 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 before each dive 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.
CAUTION

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OPERATION
NOTICE:The SR1 first stage is designed with a dry sealed spring chamber to
keep water and other substances out of the interior of the first stage.This not
only reduces interior corrosion of the first stage, it prevents ice formation in
the spring chamber in cold water diving situations. Many regulators require
an after purchase modification to achieve these benefits. It is already included
with the SR1 as a standard feature.
The SR1 first stage has a sealed diaphragm that allows the transmission of
water pressure to the internal mechanism. A slight domed shape is within
normal operating conditions, and may occur with variation in temperature
or altitude. However, any large amount of bulging that distorts the molded
logo or protrudes higher than the plastic ring is not normal, and should
immediately be inspected by your Authorized Sherwood Dealer.

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Sealed
Diaphragm

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ADJUSTMENT DURING THE DIVE
The SR1 has only one user adjustment, the second stage knob. Adjusting
this knob affects both the breathing effort and the venturi assisting effect.
The operation of this knob is the same as most regulators of this type, and
the easiest way to remember the operation is to think of the wheels on a
car. While you dive, you turn the knob forward (counterclockwise) to “roll
forward” the performance, or turn the knob back (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”.

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IN:
minimum
performance
OUT:
maximum
performance
Forward:
maximum
performance
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 flow of air.
While diving, it is recommended that the regulator be operated at the greatest
sensitivity available without causing the regulator to free flow. 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 first 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.

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Operating the purge opens the second stage valve and increases the risk of
contaminants entering the second stage valve system.
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 SR1
must receive service from an Authorized Sherwood Dealer every 24 months
or 300 hours of use, whichever comes first. 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 Dealer for service
contact us at www.SherwoodScuba.com.

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LIMITED LIFETIME WARRANTY
Sherwood Scuba warrants that the SR1 model regulator purchased from
Authorized Sherwood Scuba 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 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 verification.

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Under certain circumstances you may be eligible for free service parts.
Consult your Authorized Sherwood Dealer to determine your eligibility.
Sherwood specifically disclaims liability for any consequential, special or
indirect damages arising out of use of your Sherwood regulator.
Warranty laws in your state may affect your rights and should be consulted if
you believe the terms of the warranty do not apply to you.

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Purchase Date:
First Stage S/N: Second Stage S/N:
SERVICE RECORD
Dealer Date
Address
ServiceTechnician Signature
Dealer Date
Address
ServiceTechnician Signature
Dealer Date
Address
ServiceTechnician Signature

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Dealer Date
Address
ServiceTechnician Signature
Dealer Date
Address
ServiceTechnician Signature
Dealer Date
Address
ServiceTechnician Signature
Dealer Date
Address
ServiceTechnician Signature

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