32
Maintenance
Product Manual - Liquid Cylinders
Dura-Cyl
®
MCR Liquid Cylinder with Combo
Regulator in Gas Service
When a container is dedicated to a gas withdrawal service,
change of operation pressure requires adjustment as follows:
1
Release pressure in the container by opening the vent
valve
2
If the desired pressure setting is not within the
regulator’s range the regulator will have to be replaced
as shown in Figure 20.
3
With liquid in the container, open the pressure building
valve and observe the pressure gauge until it stops
rising. The gauge will then indicate the pressure control
regulator setting
4
Turn the pressure control regulator screw clockwise
to increase the pressure. Use the calibrated scale to
approximate the desired setting. The pressure gauge will
stop rising at the new regulator setting.
5
Continue adjusting the regulator until the desired
pressure has been reached.
6
Vent the tank pressure and allow it to build up to
confirm the pressure setting.
Dura-Cyl
®
Liquid Cylinder with LCCM Pressure
Control Manifold in Gas Service
(refer to Figure 18)
1
Close all four manual valves on the Dura-Cyl cylinder
2
Back out adjusting knob (Item A) on the pressure
control manifold
3
Release pressure in the container by opening the vent
valve (the container must be at least 1/2 full).
4
Close vent valve and turn the adjusting knob (Item A)
until the knob registers a desired pressure setting.
5
With liquid in the container, open the pressure building
valve (Item B) and observe the pressure gauge until it
stops rising. The gauge will then indicate the pressure
control manifold setting
6
Turn the pressure control manifold knob (Item A)
clockwise to increase the pressure. The pressure gauge
will stop rising at the new regulator setting.
7
Continue adjusting the regulator until the desired
pressure has been reached.
Figure 18
Dura-Cyl
®
/Cryo-Cyl
®
Liquid Cylinder in Liquid
Service
When a cylinder is dedicated to a liquid dispensing service,
change the operating pressure as follows:
1
Release pressure in the container by opening the vent
valve
2
Isolate the pressure control regulator by turning off
the pressure builder valve. The heat leak of the liquid
cylinder will be enough to maintain the pressure at 22
psig (1.5 barg).
3
Replace standard pressure relief valve with one to
maintain the desired operation pressure (22 psig is
normal). Use an oxygen compatible liquid thread
sealant (or Teflon tape) to prevent leaking.
4
Pressure test all new joints using an oxygen compatible
leak test solution
Installing the LCCM (Dura-Cyl
®
Liquid
Cylinder Only)
1
Install the four screws and washers into the manifold
(Figure 19).
2
Apply a thin layer of Halocarbon
®
grease to each side of
each ferrule, and to the threaded end of the four screws.
3
Install the gasket on the end of the manifold
4
Place the manifold on the knuckle of the liquid cylinder
with the screws lined up with the tapped holes. Use
your fingers on a 5/32” hex key to start the four screws.
5
Tighten all screws “finger tight”.
Содержание Cryo-Cyl80HP
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Страница 50: ...44 Specifications Product Manual Liquid Cylinders MCR Plumbing Configuration...
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Страница 57: ...51 Product Manual Liquid Cylinders Appendix 1 Troubleshooting Guides Cutaway Explanation...
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