Parker Hannifin Corporation
Industrial Gas Filtration and Generation Division
Lancaster, NY • 1-800-343-4048
www.parker.com/igfg
5
Bulletin TI-A915000JA-L1555
Parker Balston Model 9150
Hydrogen Generator
Mass Leak
lock the dial.
4
Turn the
Power Switch
ON (located in the rear of the generator, in the power receptacle).
Note
: The generator is now producing hydrogen at the requested pressure. As the unit approaches the
desired pressure, the
Hydrogen Flow Indicator
light may flicker, dim or even go out. This is normal oper-
ation. It will take approximately 15 minutes to reach full operating pressure internally.
5
Connect the external piping to the generator. While monitoring the
Output Pressure Gauge
on
the front panel, slowly turn the
Shutoff Valve
to the OPEN position (see Figure 7).
6
The pressure will drop initially, the magnitude of which is dependent upon the length and diame-
ter of tubing used, and volume of the connected equipment downstream. After a short time the
pressure should begin to recover. Once pressure has recovered, open the outlet valve a little
Follow the instructions listed in the
Initial Startup
section. If the pressure continues to drop, the
High
Hydrogen Flow
(Mass Leak) light will illuminate (see Figure 7). A Mass Leak may be caused either
from a leak in the piping to the equipment or it may indicate that the volume being filled is too large
for the generator. If it is determined that a Mass Leak is present, please follow the procedure below:
1
Close the
Shutoff Valve
(see Figure 7, shown in the OPEN position).
2
Turn Power switch (located in the rear of the generator in the power receptacle) OFF and then
turn Power switch ON.
3
Re-pressurize the generator.
4
Repeat the Initial Startup procedure three times to verify the leak.
If the system continues to detect a leak, check all the external tubing connections and make sure that
the volume is not too large for the generator purchased. If the leak persists, check the fittings inside
the generator, especially the o-ring seal on the desiccant cap. Make sure the desiccant cap is tight.
If there are no leaks found in internal or external connections, install a flow control valve or needle
valve downstream from the generator, as close to the outlet as possible. Set the flow control for the
desired flow rate making sure not to exceed the maximum flow rate of the generator.
Caution:
Do not use commercial leak detection fluids on any Lexan
®
plastic parts in the generator.
These fluids may cause cracking and crazing which results in leaks. Use a solution of 4-5 ml of liquid
dish soap in one liter of water.
Caution
:
Use extreme care when checking for internal leaks.
Due to the nature of the gases
involved use a protective face shield or other appropriate equipment whenever servicing or trouble-
shooting the generator with the cover removed.
Figure 9 - To remove the Drain Port Insert, press down on the
metal clip to release the insert, and pull.
Figure 8 - Insert the Drain Port Insert
along with a length of tubing into the
Drain Port in the Front
