Connecting The Generator; Hydrogen Outlet Port; Drain Ports; Electrical Supply - Parker 20H-MD Guide D'utilisation

3.2 Connecting the generator

3.2.1 Hydrogen outlet port

Refer to "Recommended system layout" on page 7 for the desired system
configuration.
The generator should be connected to the application instrument using either
high quality stainless steel tube or grade (B-280) copper tube. Remove the
protective dust cap from the hydrogen outlet port compression fitting. Insert the
tube into the outlet port fitting and rotate the tube nut until finger tight. Using a
spanner (wrench) tighten the nut one and one-quarter (1 1»4) turns.
When cutting the tubes always use the correct tools to allow a clean
perpendicular cut. Cutting tubes will cause debris that, if not removed, may
damage the downstream instrumentation. It is recommended that all pipes are
purged to remove any debris that may exist. When routing the tubes ensure
that they are adequately supported to prevent damage and leaks in the system.
All components used within the system must be rated to at least the maximum
operating pressure of the equipment. Always protect the system by installing
suitably rated pressure relief valves.

3.2.2 Drain ports

To prevent injury, and damage to the application instrument, the system piping will require purging for at least 15 minutes to remove any
trapped oxygen. If using a 3-way ball valve with vent line, as recommended on page 7, ensure that the valve is open to the vent line and not to
the application instrument. If a ball valve is not being used, ensure that the application instrument is not connected to the system piping.
Refer to "Commissioning the Generator" on page 10 for details on purging.
The overflow drain and the water bottle spillage drain must be permanently piped away using 1/2" and 1/4" Tygon or PTFE tubing respectively.
The tube connected to the overflow drain should have a u-bend to prevent contamination of the internal water bottle. Always check with local
guidelines for disposing of deionised water.

3.2.3 Electrical supply

Check the rating plate for the correct supply voltage and frequency. Select the required power cord and connect it to the switched IEC 320
socket on the generator. Connect the plug directly to the electrical supply. Do not use an extension cord.

3.2.4 Filling the water bottle

The use of any water, other than deionised water (Deionised, ASTM II, >1 M , <1 S,
filtered to <100 m), within this generator will damage and reduce the life time of the
hydrogen cell.
Fill the water bottle using fresh deionised water to a level approximately 15mm below the
upper lip of the neck of the bottle. If the generator is powered up an audible and visual
indication will be given when the correct level is reached.
Wearing suitable gloves to prevent contamination, insert the deioniser cartridge into the
water bottle and fit the cap securely.

3.2.5 Water supply (generators fitted with Auto Water Fill)

The optional water fill allows the generator's water bottle to be gravity fed from a suitable
deionised water supply. When the water level falls below the mid-point, the water bottle
will be replenished from the deionised water supply.
Connect the deionised water supply to the automatic water fill inlet using the barbed
adaptor provided and clean 1/4" Tygon (or similar) tubing. It is recommended that a balance line is fitted at the inlet to prevent air locks. Flush
the line through to remove any trapped air. Refer to "Technical Specification" on page 3 for water supply requirements.
The use of any water other than deionised water (Deionised, ASTM II, >1 M , <1 S, filtered to <100 m) within this generator will cause
damage to the hydrogen cell and reduce its life time.
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