Ocean Reef ALPHA-PR0 X-DIVERS User manual

ALPHA-PR0 X-DIVERS
OWNER’S MANUAL

ALPHA-PR0 X-DIVERS rel. 1.3
2
ALPHA-PR0 X-DIVERS - OWNER’S MANUAL
1 - INTRODUCTION
2 - GENERAL WARNINGS / OWNER’S RESPONSIBILITIES
3 - TIPS/REMINDERS FOR USE
4 - FEATURES AND COMPONENTS/ PACKAGE CONTENTS
4.1 SURFACE UNIT
4.2 PROFESSIONAL SURFACE/DIVER CABLE
4.3 UNDERWATER UNIT 2.0
5 - MOUNTING THE UNDERWATER UNIT 2.0
6 - DIVER MODE CHART
7 - TROUBLESHOOTING
8 - MAINTENANCE, CLEANING AND STORAGE
9 - WARRANTY
TABLE OF CONTENTS
3
4
5
6
7
8
9
10
12
13
14
15

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#UNDERWATERNATURALLY
For more than 70 years, OCEAN REEF has been involved in the underwater
diving industry. We have contributed much to this industry, from ns and
snorkels to the most modern systems of underwater communication. Through
the spirit of intrepid pioneers, brilliant inventors, passionate divers, and dynamic
entrepreneurs, OCEAN REEF has been able to turn dreams into reality in the
underwater world.
1 - INTRODUCTION
The Manufacturer has carefully worded and edited this owner’s manual.
However, in no event the Manufacturer will be responsible for any damage
caused by the incorrect interpretation of its content, nor due to any misprints
and/or incompleteness in the text.
The Manufacturer will not accept liabilities for any damage caused by:
• Insufcient, incorrect and improper maintenance, failing to comply with the
manual’s recommendations
• Absence of periodic tests and checks
• Incorrect and improper use
• Failing to comply with guidelines included in the owner’s manual
• Alterations and/or modications of the Vesper
If any of the above were to occur, considering these actions are potentially
dangerous to the health and life of the users, the manufacturer is released of
any responsibility and the warranty is void.
The Manufacturer is an ISO 9001:2015 certied company (https://diving.
oceanreefgroup.com/support/#ISO_CC).
If you lose this manual or if you should require more copies, you can
download it at diving.oceanreefgroup.com/support/ or contact the
Manufacturer: Mestel Safety SRL, Via Arvigo 2, 16010 Sant’Olcese
(GE), IT. Phone: [phone]. E-mail: infoitaly@oceanreefgroup.
com. Website: diving.oceanreefgroup.com

ALPHA-PR0 X-DIVERS rel. 1.3
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A WARNING indicates a procedure or situation that, if not avoided, could result in
serious injury or death to the user.
A CAUTION indicates any situation or technique that could cause damage to the
product, and could subsequently result in injury to the user.
A NOTE is used to emphasize important points, tips, and reminders.
WARNINGS, CAUTIONS AND NOTES
Pay special attention to information provided in warnings, cautions, and notes that are
accompanied by these symbols:
2 - GENERAL WARNINGS / OWNER’S RESPONSIBILITIES
While this is a product of high quality, the user is not exempt from problems
connected with the incorrect use of the product or failure to follow the rules of
safe diving.
If the instructions provided in the manual are unclear or difcult to understand, please contact
OCEAN REEF at [e-mail] before using the equipment or attempting any
repairs.
IMPORTANT
The content of this manual is based upon the latest information available at the time of print.
OCEAN REEF reserves the right to modify any products, processes and manufacturing techniques
at any time. It is the technicians’ responsibility to acquire the latest information and parts from
OCEAN REEF for service and repairs to be performed.
Carefully read this instruction manual before use, and keep it for future reference.
In order to maintain the warranty, service and routine, maintenance of the products
must be performed by the end user as indicated by OCEAN REEF and described in
chapter 8 MAINTENANCE, CLEANING AND STORAGE.
For details, contact an authorized OCEAN REEF dealer at: https://diving.
oceanreefgroup.com/shop-dealers/
OCEAN REEF refuses all responsibility for damages caused by non-compliance with
the instructions contained in this manual. These instructions do not extend the warranty
or the responsibilities stated by OCEAN REEF terms of sales and delivery.
Before using the ALPHA-PR0 X-DIVER the user must ensure that the product has
been properly inspected and maintained. (See Chapter 8 Maintenance, Cleaning and
Storage).
DO NOT USE the unit if it is overheating, if it is leaking battery uid, if water has leaked
the unit, if there is smoke coming from the unit or if any part is broken.
Do not modify or alter in any way the ALPHA-PR0 X-DIVERS.

ALPHA-PR0 X-DIVERS rel. 1.3 5
#UNDERWATERNATURALLY
3 - REMINDERS AND TIPS FOR USE
Before diving, check the surface unit battery.
This product should not be exposed to chemical products such as sunscreen
or insect repellents as some components may melt or damage plastics.
Do not allow it to fall or be knocked around.
Talking and listening while underwater requires practice. With experience,
divers will become more procient in the use of the communications system.
Do not dismantle or repair the communication unit by yourself
Before charging, please make sure the charging port is dry.
Charge in a safe, dry place.
When not in use or at the end of each use, make sure that the surface unit has
been turned off.
Make sure there is no dirt, debris or water in any part of the unit, especially in
the
rubber 6 pin connector . If any dirt, debris or water is found, remove it.
Product should be stored in shade and cool location.
Do not expose to extreme low and high temperatures.
Do not leave the product under direct sunlight.
Operating temperature: 0°C (32°F) and +40°C (104°F)
Use the original charger only.
It is your responsibility solely to assure the charger works properly.

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4 - FEATURES AND COMPONENTS/ PACKAGE CONTENTS
The ALPHA-PRO X-DIVERS is a hardwired, full-duplex underwater
communication system for conversations between the surface
and one or two divers.
With powered volume for both diver and surface.
Moreover, the volume of the underwater unit can be adjusted
from the surface unit to allow the divers to have the best comfort
during the dive.
This communication unit is specically designed to meet the
needs of professional and commercial divers that cannot
compromise on a full duplex, hands free, clear communication
system. Cable communication is still unequaled in quality, while
needing a tethered connection of a diver to the surface.
The underwater unit can be sold separately, and customized for
use with some other brand surface units, but is designed to be
used specically with the ALPHA PRO X DIVERS surface unit.
The range depends on cable length.
(cable length customizable on request - up to 200 metres /600ft)
Speaker and microphone as featured in all comm. units, but what
looks like a push to talk button is actually a recall button.
Scan the QR code and
watch the video tutorial
1 - SURFACE UNIT
W/MIC & CHARGER 3 - UW UNIT2 - PROFESSIONAL 50 M CABLE
INCLUDES:

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#UNDERWATERNATURALLY
Surface unit, hardwired, full duplex underwater communication. It has the following features:
1. 2 ports for 2 communication cables.
2. On/off and volume adjustment switches.
3. Microphone.
4. Switch for communication between surface & diver 1, surface & diver 2, surface & diver 1
& diver 2 (cross talk).
5. Headset port (headset optional).
6. Battery charger, external power & audio out port (cables optional)
7. Audio/video recall.
8. Incorporated speaker.
• 12V rechargeable battery
• Audio recall
• Underwater unit volume adjustment (for both divers).
• Stand-by autonomy: 24h.
Surface unit (if sold separately code OR033133)
4.1 SURFACE UNIT
1
2
5
4
7
6
3
8
The serial number on the Surface unit is located on the top inside cover of the
case.

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Professional surface/diver cable
(50meters -165 ft long)
(if sold separately code OR033134)
4.2 PROFESSIONAL SURFACE/DIVER CABLE
6 pin cable/wire with yellow rope exterior. The
cable’s diameter is 10mm with a resistance of more
than 4000 Newton.
The cable includes waterproof rubber 6 pin
connector at the diver side and DIN metal connector
on the surface side.
The Professional cable is also available at any length
on request (
up to 200 metres) .
4000 N is the tear up strength, audio signal may be lost earlier!
It is fundamental to pay attention that the cable does not get stuck on the boat or
on the seaoor.
It is also very important to keep the cable slightly buoyant, by attaching a small
buoy or oating device to the cable a few feet away from the underwater unit.
It is a good idea to connect the cable with a hook or retractor to the BC jacket,
avoiding any traction between the surface and the underwater unit.
OCEAN REEF cable eeter is avaiable as optional.
During the dive the surface operator must slowly feed the cable out to the
underwater diver as needed, while keeping voice contact. It is not advised to
simply throw the cable into the water. The same procedure should be used when
the dive is completed and the cable has to be brought on board.
2 cable oaters (x3) useful accessory to keep
audio/v cables oating avoiding entanglement
ALPHA PRO X DIVERS bag this bag is designed
to be incredibly durable to carry coil cables, it is
bright colored and easy to spot
Cable eeter avoid any traction between the
surface and the underwater unit
1
1
3
2
2
3

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#UNDERWATERNATURALLY
Underwater unit 2.0
(if sold separately code OR033135)
4.3 UNDERWATER UNIT 2.0
• Waterproof piezoelectric speakers (X2)
• D-Mic microphone
• Full-duplex system
• Audio recall button
• 6 pin waterproof connector
The connector between the cable and the underwater unit can be disconnected
and connected again underwater
Routinely, clean the microphone contacts and check the integrity of the hydrophobic
membrane and the casing. If the microphone is ooded, it CANNOT BE recovered
and must be replaced.
Do not touch the hydrophobic membrane with any sharp object that may damage it.
The serial number of the underwater unit is
printed on the left earphone.
The Underwater unit can be connected to any professional OCEAN REEF Mask using the
OCEAN REEF Extender Frame

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Assemblying the ALPHA PRO X-DIVERS underwater unit on the Extender Frame
Start removing from the Extender Frame both side connections, as shown in the picture
below.
Begin mounting the left (the one connected to the mic-PTT), earphone of the ALPHA PRO
X-DIVERS underwater unit securing it to the Extender Frame exactly like a neutral or an earphone
support.
Bridges have L and R written on them for identication.
Finish by screwing rmly the bridges on the inside.
Be careful to insert the support in the correct position with no gap between the support and the
frame.
YES NO
5 - ASSEMBLYING THE UNDERWATER UNIT 2.0

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#UNDERWATERNATURALLY
Proceed connecting the PTT/MIC on the COMMUNICATION side port of the mask by screwing
it on. The crown around the PTT will turn until ush.
Last, connect the R, earphone to the right side of the Extender Frame by having the cable
connecting the two ears passing underneath the straps into the face seal groove.
YES NO

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DIVER 2 SELECTED
Receive from Talk to
Surface Diver 1 & 2 Diver 2
Diver 1 None Diver 2 & Surface
Diver 2 Diver 1 & Surface Surface
DIVER 1&2 SELECTED
Receive from Talk to
Surface Diver 1 & 2 Diver 1 & 2
Diver 1 Diver 2 & Surface Diver 2 & Surface
Diver 2 Diver 1 & Surface Diver 1 & Surface
DIVER 1 SELECTED
Receive from Talk to
Surface Diver 1 & 2 Diver 1
Diver 1 Diver 2 & Surface Surface
Diver 2 None Diver 1 & Surface
By adding an additional surface/diver cable and underwater unit, the Alpha Pro X-DIVERS
may communicate with two divers at the same time. It is also possible for the surface to
switch between each of the divers.
6 - DIVER MODE CHART

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#UNDERWATERNATURALLY
7 - TROUBLESHOOTING
Problem Probable cause What to do
The surface
unit does not
turn on 1. Low battery 1. Recharge the batteries
The
underwater
unit does not
receive
1. Power turned off
2. The surface diver cable
is not attached to the
surface unit
3. Low volume
4. Flooded underwater unit
1. Turn on the surface unit
2. Check the surface unit
connection
3. Turn up volume
4. Return to surface, rinse in fresh
water and send to OCEAN
REEF service center
Surface is not
receiving
1. Volume too low
2. Power turned off
3. Flooded microphone on
underwater unit
4. Flooded UW unit
1. Raise volume on the surface
audio and check the power
2. Turn on the surface unit
3. Return to surface, rinse in fresh
water, replace mic
4. Return to surface, rinse in fresh
water and send to OCEAN
REEF service center
Recall system
1. Issues with the
underwater unit button
2. Issues with the surface
unit alarm system
1. Return to surface, rinse in fresh
water and send to to OCEAN
REEF service center
2. Return to surface and send to
OCEAN REEF service center
Replacing the Mic
Remove the MIC assembly from the mask, unscrew few threads of the two little side screws
and pull off the Mic. Replace with the new one being careful not to overtighten the little
screws to avoid damages to the contacts and to mount the microphone in the same direction.

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Table 2: Periodic maintenance program
8.1 MAINTENANCE AND CLEANING
The underwater unit will work perfectly if the periodic program of maintenance and
cleaning collected in Table 2 is applied during its whole life from the rst use.
General and visual inspection means checking that all the components and parts are not
damaged, and verifying there is not any wear and tear. No damages must be detected on
the product. If damages are detected, the product cannot be used until repair.
Use fresh water to remove the seawater from your UW unit after each use. The product
must be stored completely dry.
Do not use solvents (such as diluents) to clean the unit. They can cause irreparable damage.
Only use neutral detergents.
Do not expose the unit to direct sunlight for prolongued periods of time.
TYPE OF ACTION FIRST USE
BEFORE
EACH
USE
AFTER A
DIVE
GENERAL FUNCTION
CHECK X X
GENERAL AND
VISUAL INSPECTION X X
CLEANING /RINSING
(UNDERWATER UNIT
AND CABLE) X
8 - MAINTENANCE, CLEANING AND STORAGE
For optimum longevity of the product
and the proper functioning of its parts,
we recommend rinsing the underwater
unit and the cable thoroughly with
fresh water after every use. DO NOT
clean the product with any abrasive
materials.
No chemical should be used. We
recommend drying the unit with a soft,
clean cloth.
8.2 STORAGE
The product should be stored in a ventilated environment preferably between 0°C
(32°F) and +40°C (104°F), avoiding the direct action of sunlight, pollution, dirt, etc.

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#UNDERWATERNATURALLY
1. The OCEAN REEF ALPHA PRO X-DIVERS is guaranteed to be free of material
or manufacturing defects for a period of 24 months from the time the unit is
purchased.
2. For the duration of the above mentioned warranty, the Company’s responsibility
is limited to replacement of any parts that are defective and that have not been
used incorrectly or handled negligently. The product must be returned to the
outlet from which it was bought.
3. Even during the warranty period, this warranty shall not be valid where:
• Damage was caused by incorrect handling or carelessness.
• Damage was caused by the product falling after it was purchased.
• Damage caused by re, earthquake, oods, lightning, or other natural
disasters.
• The warranty card is not produced.
• Your name, the date of purchase, and the distributor’s name do not
appear on the warranty card.
• The product has not been serviced as required through an OCEAN
REEF authorized service center.
• The product has been tampered with or has been repaired/serviced
9 - WARRANTY
You can nd a copy of this and other OCEAN REEF manuals online on our website.
In order to limit our paper consumption, and as a part of our environmental friendly
and responsible approach, OCEAN REEF recommends, in case you lose or damage this
manual, to consult the documentation present online rather than print it out.
Please refer to our web site:
diving.oceanreefgroup.com/support/
© OCEAN REEF 2022

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OCEAN REEF Inc
2510 Island View Way
Vista, CA 92081
Phone [phone]
Fax [phone]
E-mail: [e-mail]
MESTEL Safety s.r.l
Via Arvigo 2, 16010 Genova (Italia)
Phone [phone]
E-mail: [e-mail]
diving.oceanreefgroup.com
oceanreefgroup.com
ACCESSORY INTEGRATION
• ExtenderKitInlcuded..
• Surfaceairvalveintegrated.
• Customizeyourmasktoyourprofessionalneeds.