Document ID: FRepInstrJet Date: 2013-04-18
Approved by: Jonas Brandt
Subject: Field repair instructions - Jetstream
Author: Jörgen Nilsson Revision: 1.0
Poseidon Diving System AB
Page: 1 / 2
Field Repair Instructions Jetstream/Xstream – Intermediate pressure and cracking pressure
If repairs have to be performed in an environment where test equipment recommended in the service
manual isn’t available, the following equipment and methods can be used when setting the
intermediate pressure of the 1
st
stage and inhalation cracking pressure of the 2
nd
stage.
Equipment.
The following equipment is needed:
A tank of compressed air, with a minimum pressure of 180 bar / 2610 psi.
Adjustment tool with Poseidon article number 2705.
Allen Key 1,5 mm with Poseidon article number 2706.
Allen key 5 mm.
A low pressure gauge (0-10 bar / 0 – 145 psi minimum) that can be attached to a 1
st
stage low
pressure port.
A bucket of water, at least 4 inches deep
Article number Description Picture
2705 Adjustment tool.
2706 Allen key, 1,5 mm
N/A Allen key 5 mm.
Setting intermediate pressure on the 1
st
stage.
Attach the 1
st
stage to the tank.
Attach the low pressure gauge to a low pressure port of the 1
st
stage.
Attach a low pressure hose and 2
nd
stage to another low pressure port.
Make sure all other ports are blinded.
Open the tank valve and pressurize the regulator.
Check the low pressure gauge to see what the intermediate pressure is.
If needed, use the 5 mm Allen key to turn the adjustment screw of the 1
st
stage so that the
intermediate pressure reaches 8,5 bar / 123 psi. Purge the 2
nd
stage repeatedly during this
process.
When an intermediate pressure of 8,5 bar / 123 psi has been set, check the low pressure
gauge to make sure the pressure isn’t increasing or decreasing.
If the intermediate pressure remains stable at 8,5 bar / 123 psi, the intermediate pressure has
been set.
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