Uwatec R390 Troubleshooting Manual Download Page 1

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SCUBAPRO R390 – R380 Second Stages

Trouble Shooting Guide

Symptom

Correction

Tools Needed

Continuous slow leak from

second stage

Readjust orifice or Nyloc nut

Replace poppet, seat or spring

Universal tool/ ¼” nut driver

Continuous slow leak from

second stage

High IP – See first stage trouble shooting

Universal tool/ Pneumatic

adjustment tool

Inhalation effort is lower than

specification

Tighten nyloc nut (3 threads maximum)

Replace spring

Universal tool/ ¼” nut driver

Summary of Contents for R390

Page 1: ... Readjust orifice or Nyloc nut Replace poppet seat or spring Universal tool nut driver Continuous slow leak from second stage High IP See first stage trouble shooting Universal tool Pneumatic adjustment tool Inhalation effort is lower than specification Tighten nyloc nut 3 threads maximum Replace spring Universal tool nut driver ...

Page 2: ... pressure of at least 1500 psi 100 bar Readjust nyloc nut Lever too low Universal tool nut driver Inhalation effort is higher than specification Replace spring Increase IP See first stage trouble shooting guide Replace lever Universal tool nut driver Violent free flow from second stage Re adjust VIVA control High IP See first stage trouble shooting guide Pneumatic adjusting tool ...

Page 3: ...ing Replace orifice o ring Readjust orifice Various VIVA does not provide continuous flow of air at the MAX setting Readjust nyloc nut Lever too low Readjust orifice or nyloc nut Universal tool nut driver VIVA does not provide continuous flow of air at the MAX setting Check VIVA vane for correct position Replace lever VIVA Removal tool Nut driver ...