Troubleshooting - Scubapro MK25T Handbuch

4. Slowly open the cylinder valve in order to minimize the risk of ignition of the high oxygen
content mix.
5. Components requiring lubrication (O-rings, etc.) must be treated only with suitable
products. In any case never use silicone grease on components used in the high
pressure parts of the regulator, doing so would compromise the compatibility with
Nitrox mixes.
! WARNING
Do not use Nitrox regulators with oxygen enriched air if they have been used with
compressed air. There might be residues of fl ammable 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 fi rst stage regulators must also be compatible with the
use of Nitrox mixes.

10. TROUBLESHOOTING

MALFUNCTION
After opening the cylinder valve the
pressure gauge shows zero.
HP or IP leak.
Valve leak.
No air supply.
The regulator free fl ows.
If the free fl ows continues.
Water leak inside the regulator second
stage.
PROBABLE CAUSE
1. Empty cylinder.
2. Malfunctioning pressure gauge.
3. Malfunctioning cylinder valve.
Damaged O-rings.
Defective valve or stem.
Malfunctioning regulator (fi rst or second
stage).
Venturi effect has been triggered.
Malfunctioning regulator.
Dirt or malfunctioning exhaust valve or
damage to mouthpiece or diaphragm.
SOLUTION
Fill the cylinder.
Have the pressure gauge replaced by
an authorized technician.
Have the cylinder valve checked by an
authorized technician.
Have the O-rings replaced by an
authorized technician. Avoid over-
tightening the connections.
Have the valve checked by an
authorized technician.
Have the regulator checked by an
authorized technician.
Cover the mouthpiece with a fi nger or
direct the mouthpiece opening down or
submerge it.
Do not begin the dive (or end it) and
have the regulator checked by an
authorized technician.
Have the regulator checked by an
authorized technician.
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