Bulletin TI-H2PD-K
Installation, Operation and Maintenance Manual
H2PD-150 and H2PD-300 Hydrogen Generators
www.parker.com/igfg
10
1-800-343-4048
Controls
Startup
To maximize the life of the palladium membrane, the Parker Balston Hydrogen Generator should be
run continuously. If the hydrogen generator must be shut down for short periods of time (e.g., over
-
night), leave the power switch in the “on” position, and move the hydrogen output switch to the “OFF”
position. Shutting the unit down in this manner will minimize water and energy consumption.
Note: When the hydrogen outlet valve is closed, the pressure inside the generator (and the
digital pressure display) may increase to 75 psig to 80 psig (5.1 to 5.5 bar).
Temporary Shutdown
!
Operation
Hydrogen Pressure -
The hydrogen delivery pressure may be adjusted using the pressure adjust
knob located beneath the access panel on the top of the generator (see Figure 4). During pres
-
sure adjustment, LCD display will show the pressure setting and the “Set Pressure” message will be
displayed. After approximately 20 seconds of pressure adjustment, the digital pressure display will
automatically switch to display the actual system pressure, and the message will change to “Output
Pressure”.
Hydrogen Flow -
The hydrogen outlet valve is controlled by a switch located beneath the access
panel on the top of the generator. To open the outlet valve and initiate flow, simply press the switch
to the “AUTO” position. While operating in the “AUTO” position, the hydrogen outlet valve will remain
open. If a fault in the operation of the system occurs, a system diagnostic message will show on the
front panel and the hydrogen valve will be automatically controlled. For temporary shutdowns, move
the switch to the “OFF” position. When the switch is closed in this manner, the generator will maintain
its internal pressure. The valve should remain in the “AUTO” position for normal operation. The “ON”
position will override the controls to allow for troubleshooting.
Do not leave the switch in “ON” posi-
tion during normal operation.
Set the hydrogen pressure adjust knob to the desired output pressure and set the hydrogen out-
put switch (see Figure 2) to the “AUTO” position. The solenoid valve will then open. Using a flow
controller or needle valve, set the warmup flow to 80-85% of the total generator capacity. Open the
downstream vent valve(s) to purge the lines (see Figure 5). Hydrogen output will begin approximately
10 minutes after powering the unit on, and will increase to its rated capacity and purity in 2 to 4 hours.
Over this period of time, the cell will warm up and all piping will be purged to prepare for high purity
hydrogen delivery.
After the generator has warmed up (2 hours minimum) and the lines have been purged, connect the
piping to the instrument or process which requires high purity hydrogen. Allow pressure to build in
the line before initiating flow through the instrument or process. The digital pressure displayed slowly
increases until the hydrogen lines reach the set pressure. The amount of time required to fill the line is
dependent on the length and diameter of the piping used.
Note:
The quality of the delivered hydrogen gas depends on the cleanliness of the delivery lines and
accessories, both internal and external to the Parker Balston Hydrogen Generator. Leaks, traces of
moisture, air, reducible oxides, and other contaminants must be flushed out of the system before the
purity of the delivered hydrogen meets specifications.
Operate the Parker Balston Hydrogen Generator continuously for optimal hydrogen output
and cell longevity.
On a regular basis, monitor the water level and operational status. After the
initial 48 hours of operation, fill the generator with deionized water
(5 Megohm-cm or higher)
,
on an as needed basis, filling until the level indicator on the front panel is at or slightly beyond the “WA
-
TER FULL” level.
Do not overfill.
Monitor the hydrogen consumption of the downstream equipment
to ensure flow is within the capacity of the generator (i.e., 150 cc/min. for the H2PD-150, and 300 cc/
min. for the H2PD-300).
Note:
It is not unusual for a faint mist to vent from the generator vent port during operation.
If there is a power interruption during operation, the generator will power up with the hydrogen output
valve switch in the "ON" position when power is restored. If the built-in system diagnostics trigger a
fault message, consult the Troubleshooting and Service section of this manual for further instructions.
