Control Circuit - Parker Balston H2PD-150 Installation, Operation And Maintenance Manual

Bulletin TI-H2PD-K

Control Circuit

Check Cell
High Temperature
High Pressure
Add Water
Low Water
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The internal circuitry of the Parker Balston Hydrogen Generator controls the electrolytic cell current
to a safe level, eliminating the possibility of excessive hydrogen production.
If electrolyte solution should pass through the system into the hydrogen output stream, the "Check
Cell" message will be displayed and the outlet solenoid valve will close, preventing damage to
equipment installed downstream from the Parker Balston Hydrogen Generator.
If the electrolytic cell exceeds its maximum temperature safety setpoint, the generator will shut
down until the cell cools. When the generator shuts down as a result of excessive cell temperature,
the "High Temperature" message will be displayed.
If the hydrogen supply line is over pressurized, the generator will shut down. When the generator
shuts down as a result of excessive pressure in the hydrogen supply line, the "High Pressure" mes-
sage will be displayed.
If the water supply in the feed water bottle reaches a preset refill level (3-1/2 day supply), the
"Add Water" message will be displayed and a slow, audible signal will sound. The system remains
operational. The signal will be reset when the water bottle is refilled above the "Add Water" mark.
If the deionized water supply in the feed water bottle reaches the preset minimum level, the "Low
Water" message will be displayed, and the hydrogen generator will shut down. A rapid, audible
signal will sound when the minimum water condition occurs. The generator will re-start and the
audible signal will be reset as soon as deionized water is added and the water level rises over the
"Low Water" level mark. The Parker Balston Hydrogen Generator will run for 8-10 days (depending
on ambient temperature, flow demand, etc.) at maximum flow on a full water bottle, before the "Add
Water" message will be displayed.
Figure 4 - Detailed Views
Installation, Operation and Maintenance Manual
H2PD-150 and H2PD-300 Hydrogen Generators
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