SCUBAPRO MK19 Evo-A700 Dive Regulator System Instruction Manual

: June 12, 2024
: SCUBAPRO

MK19 Evo-A700 Dive Regulator System

The whole SCUBAPRO regulators manual is downloadable from the website www.scubapro.com The SCUBAPRO
regulators manual files provided on the website www.scubapro.com are in PDF format and require Adobe Acrobat Reader
to be read. If you do not have this software, you can install it on your computer by downloading it from: www.adobe.com

SCUBAPRO REGULATORS MANUAL

1. IMPORTANT WARNINGS

WARNING
This manual, and its complete version, which can be downloaded from www.scubapro.com, must be read and
understood in full before using the product. We recommend that you keep this manual for the full life of your
regulator.

WARNING
For details about the characteristics of your model, preparing it before use, and how to use and
maintain your SCUBAPRO regulator, refer to the full corresponding manual that you can download from
www.scubapro.com using the QR code shown on the cover of this manual.

WARNING
When diving you must follow the rules and apply the skills taught by a recognized scuba diving certification
agency. Before taking part in any diving activity, it is mandatory to have successfully completed a scuba
diving course covering both theoretical and technical aspects of diving.

WARNING
This instruction manual does not replace a diving instruction course!

2. EUROPEAN CERTIFICATION

All SCUBAPRO regulators described in this manual have obtained the European certification according to
European rules regulating the conditions for the release on the market and the fundamental safety requirements for
third category Personal Protective Equipment (PPE).
Certification tests have been conducted according to the EN250 harmonized standard to ensure the compliance
of the regulators to the fundamental requirements for health and safety set by European regulation 2016/425/EU.
The CE and EN250 marks on the product denote the conformity to said requirements.
The 0474 number next to the CE marking is the identification code for RINA Via Corsica, 12, 16128 Genova (GE)
Italy, the notified body controlling production compliance with regulations, as per Module D 2016/425/EU
The Manufacturer of SCUBAPRO regulators is SCUBAPRO EUROPE s.r.l. Via Tangoni 16 16030 Casarza Ligure
(GE) Italy. SCUBAPRO EUROPE s.r.l. has a quality management system certified by RINA in accordance with the
ISO9001:2015 standard.

2.1 EN 250: 2014 norm regulations and what they mean

The requirements and tests defined by the EN 250: 2014 aim to ensure a minimum safety level for the operation
of underwater breathing equipment.
In Europe, the EN 250 norm defines since years the minimum technical standards of acceptance for recreational
diving regulators and the EN250:2014 is the latest revision of the EN250 norm.
All SCUBAPRO regulators have successfully passed the certification test required by EN250:2014.

2.2 Limitations provided by EN 250: 2014

The SCUBA unit can be comprised of separate components such as: cylinder(s), regulator(s), pressure gauge.
The SCUBAPRO regulators described in this manual can be used with SCUBA components units certified
according to regulation EU 2016/425 and EN 250: 2014 norm. The air contained in the cylinders must be compliant
with the requirements for breathable air set forth in EN 12021. The certification depth is 50 meters (164 ft). In any
event, divers must always abide by the limits set by local regulations in the dive location.

WARNING
Only SCUBA complying with EN250:2014 and marked “EN250A” or “EN250A>10°C” may be used as an
escape device by more than one diver at the same time

2.2.1 OCTOPUS (Emergency auxiliary breathing device)

The octopus is usually considered as an auxiliary emergency second stage to be used by the diver in case of need
(such as malfunction of its primary second stage).

WARNING
If a SCUBA is configured for and used by more than one diver at the same time, then it shall not be used
at depths greater than 30 meters and in water temperature less than 4°C if marked “EN250A”, and less
than 10°C If marked with “EN250A>10°C”

3. IMPORTANT WARNING REMINDERS

For your protection while using SCUBAPRO life support equipment, we call your attention to the following:

Use the equipment according to the instructions contained in this manual and only after having completely read and understood all instructions and warnings.
Use of the equipment is limited to the uses described in this manual or for applications approved in writing by SCUBAPRO.
Cylinders must only be filled with atmospheric compressed air, according to the EN 12021 norm. Should
moisture be present in the cylinder, beside causing corrosion of the cylinder, it may cause freezing and
subsequent malfunction of the regulator during dives carried out in low temperature conditions (lower than
10°C (50°F)). Cylinders must be transported according to local rules provided for the transport of dangerous
goods. Cylinder use is subjected to the laws regulating the use of gases and compressed air.
A SCUBAPRO regulator must be overhauled by an authorized SCUBAPRO technician every 2 years. The
servicing overhaul is compulsory to preserve the limited lifetime warranty. SCUBAPRO also recommends
that highly used regulators (100 dives/year +) undergo an inspection every 6 months and an overhaul every
year. Overhauls must be documented. When making repairs and during maintenance, only SCUBAPRO
replacement parts must be used.
Should the equipment be serviced or repaired without complying with procedures approved by SCUBAPRO or
by untrained personnel or not certified by SCUBAPRO, or should it be used in ways and for purposes other than
specifically designated, liability for the correct and safe function of the equipment transfers to the owner/user.
The content of this manual is based upon the latest information available at the time of going to print.
SCUBAPRO reserves the right to make changes at any time.
Breathing must be continuous, without holding one’s breath.
All dives must be planned and carried out so that at the end of the dive the diver will still have a reasonable
reserve of air for emergency use. The suggested amount is usually 50 bars (725 psi).

SCUBAPRO 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 SCUBAPRO terms of
sales and delivery.

In order to maintain the warranty, maintenance must be performed by a qualified SCUBAPRO technician, and
maintenance records must be kept. For details, contact an authorized SCUBAPRO dealer.

4. WARNINGS BEFORE THE DIVE

SCUBAPRO first stages are available with various cylinder valve fitting connectors (according to ISO12209
standard):
DIN: screw connection up to 300 bar
INT: yoke connection up to 232 bar

! WARNING
While opening the cylinder valve, the pressure gauge face must not be directed towards the user or
others, in the event and risk of a pressure gauge malfunction.

! WARNING
When opening the cylinder valve the second stage purge button should be slightly depressed, so that
the second stage valve is open.

WARNING
Do not push down on the purge button in low temperatures, as this may cause a second stage freeze-up.

5. EQUIPMENT USE

5.1 Second stages with Venturi effect (V.I.V.A.) adjustment

If the second stage is equipped with a Venturi effect adjustment system, this device must be turned to the minimum
(marked “MIN”) or the “PREDIVE” setting while at the surface. If the regulator is used during the dive, the knob
must be switched to the “MAX” or “DIVE” position.
An accidental free-flow can be stopped by covering the mouthpiece opening with a finger or by submerging the
second stage regulator with the mouthpiece turned down, or by placing the mouthpiece in the mouth.

! WARNING
Breathing must be continuous, without holding one’s breath.
If the second stage is used as an alternate air source (octopus) the V.I.V.A. knob should be set to the “MIN” or the
“PREDIVE” position for the entire duration of the dive. Should the use of this second stage be needed, the knob
must be turned to “MAX” or “DIVE”

5.2 Diver adjustable inhalation resistance control

Second stages equipped with this system have an over-sized external control knob acting directly on the
spring tension, allowing the diver to adjust the inhalation resistance in order to adapt it to the needs of the dive
conditions. Adjusting the control knob (clockwise rotation) causes an increase in inhalation resistance. Adjusting
with a counterclockwise rotation reduces the spring tension for lower inhalation effort. All depends on the diving
conditions, such as in strong currents, when the diver spends some time with his head down and when the second
stage is used as an alternate air source (octopus).

! WARNING
A higher inhalation resistance does not necessarily imply a lower air consumption, in fact it may even
have the opposite effect, due to the higher effort required to trigger the air flow increasing your work of
breathing.

6. COLD WATER USE

! WARNING
Diving in cold waters requires special equipment and techniques. Before attempting a cold water dive,
obtain adequate training from a recognized certification agency.
EN 250: 2014 norm defines “cold waters” as those having a temperature lower than 10°C (50 °F) and requires that
regulators certified for use in such conditions must be tested and approved to work properly in temperatures of
4°C (39 °F). If the SCUBA equipment is used in water with a temperature lower than 10 °C (50 °F) it is important
to keep in mind the following:

Use only regulators certified for use in these conditions. SCUBAPRO regulators certified for use in cold water
in accordance with norm EN 250: 2014 are marked with “EN250A”
Remove the protective sleeves from both the ends of the LP hose
Prior to the dive keep the regulator in a warm environment before fitting your regulator on the tank.
If the regulator is exposed to colder conditions, much lower than 0°C (32°F), set the V.I.V.A. knob on “MIN” or
“PREDIVE”) to avoid the risk of spontaneous and uncontrolled free-flow.
With high air flows the regulator first stage cools rapidly, therefore avoid high consumption rates during cold
water dives. For example, avoid simultaneously using the buoyancy compensator and dry suit inflator and the
alternate air source. It’s also advised to avoid checking the second stage function via the purge button, unless
absolutely necessary. Ensure that the cylinder is filled only with air compliant with norm EN 12021.

WARNING
In extremely cold water diving, SCUBAPRO recommends the use of a cylinder equipped with two
separate valves, connected to two complete regulators.

7. POST DIVE

After every dive and especially if in chlorinated water (pools), rinse the regulator with fresh water, preventing water
from entering the system by following these steps:
1. Ensure that the high pressure inlet of the first stage regulator is closed with the special protective cap.
2. For second stages featuring the anti-engraving device, check that is not engaged.
3. Should water accidentally enter the low pressure hose, connect the regulator to the cylinder, open the valve
and press the second stage purge button down until all water has been expelled.
4. Dry your regulator completely in a dry ventilated place, away from heat and direct sunlight.

! WARNING
Open the cylinder valve only with a regulator connected to the cylinder or slowly turning the cylinder
valve knob as to control the air flow.

8. CARE OF REGULATORS WHEN NOT IN USE

a. Engage the anti-engraving device on the second stages which are so equipped.
b. Completely unscrew the adjustment knob, on second stage regulators equipped with an inhalation resistance
control knob.
c. Make sure that the high pressure inlet protective cap is in the correct position.
d. Keep the regulator in a dry place, away from heat and direct sunlight. The mouthpiece should be periodically
immersed in a disinfecting solution and rinsed with fresh water to completely remove the disinfectant. Do not
use disinfectant substances that could damage the mouthpiece.
e. Disinfection: SCUBAPRO recommends McNett Revivex. Use according to the procedure and dilution
described on its packaging.
TEMPERATURE LIMITS: -10°C / 60° C

9. NITROX

! WARNING
To prevent severe and potentially lethal injuries DO NOT dive using Nitrox (oxygen enriched air) mixes unless
you have first obtained adequate training and certification in their use by a recognized certification agency.

! WARNING
Maximum operating depth (MOD) and exposure times to Nitrox (oxygen enriched air) mixes are dependent
upon the oxygen concentration of the mix in use.
The term Nitrox (oxygen enriched air) defines breathable mixes composed of oxygen and nitrogen and containing
oxygen in a percentage higher than 21% (atmospheric air). The higher oxygen concentration limits the use of these
mixes with standard scuba equipment and requires the use of materials and procedures that differ from those
required by the use of atmospheric air.

USE OF NITROX MIXES OUTSIDE OF THE EUROPEAN UNION

Standard production SCUBAPRO regulators distributed to countries outside of the European Community
use normal INT or DIN connections and are manufactured with materials, assembly procedures and
lubricants that ensure compatibility with gas mixes containing oxygen up to 40%.
In these countries, users are required to follow the same safety procedures that apply to dedicated nitrox
regulators and to comply with the regulations set by each country concerning the use on Nitrox mixes for diving.

! WARNING
If SCUBAPRO regulators have been used with standard compressed air it will be necessary to perform
a new maintenance and cleaning procedure specifically designed for the use of nitrox mixes and carried
out by a SCUBAPRO authorized technician, before using them again with Nitrox.

! WARNING
Titanium is not compatible with Nitrox (oxygen-enriched air) mixes because it may ignite when exposed
to high oxygen concentrations.
Do not use a Titanium regulator with oxygen-enriched air at an oxygen percentage greater than 40%.
There is no way to convert a Titanium regulator for use with oxygen-enriched air at an oxygen percentage
greater than 40%.

USE OF NITROX MIXES WITHIN THE EUROPEAN UNION

Within the European Community the use of Nitrox mixes is regulated by norms EN 13949 and EN 144-3. SCUBAPRO
has designed and manufactured a special regulator line that complies with the aforementioned regulations. The first and
second stage regulators of this line are identified by the marking “Nitrox” and also feature components colored green or
yellow, or marked with special stickers, to allow an immediate identification.
These regulators can be used with oxygen enriched air containing an oxygen concentration higher than 22%
and up to 100% (pure oxygen), at a maximum operating pressure of 200 bars (2900 psi) or 300 bar (4351 psi)
depending on the version.

9.1 Main features of Nitrox dedicated regulators

As required by European Norms, Nitrox first stage regulator connections have been designed and approved to
be used exclusively with Nitrox cylinders and cylinder valves, in order to prevent confusion with the corresponding
standard-production compressed air regulators. SCUBAPRO Nitrox connections comply with EN 144-3.
In Nitrox first stage regulators, compatibility with high pressure oxygen (higher than 40 bar / 580 psi and up to
200 bar / 2900 psi or 300 bar (4351 psi) depending on the version) is ensured by the choice of special materials
used to manufacture seats, O-rings, gaskets and seals used in the high pressure first stage mechanism valves.
Components are lubricated with a specific oxygen lubricant. SCUBAPRO Nitrox regulators are assembled in a
dedicated area in order to comply with the high cleanliness standards required for oxygen compatibility.

! WARNING
Do not use Nitrox regulators with oxygen enriched air if they have been used with compressed air. There
might be residues of flammable materials that could cause serious accidents.

! WARNING
Do not use silicone grease for the lubrication of Nitrox regulators.

! WARNING
Second stage regulators, pressure gauges, consoles and other accessories used in combination with
Nitrox first stage regulators must also be compatible with the use of Nitrox mixes.

! WARNING
Maintenance on regulators that use Nitrox must be performed every 100 dives or at least annually.