Faq - Horizon Fitness H-100 User Manual

13. FAQ

What is the SCU?
This is the Short Circuit Unit, it helps to condition the fuel cell for long term good performance.
What is the Hydrogen pressure supplied to the fuel cell stack?
The pressure is required to be 0.45-0.55Bar.
What is the maintenance of the stacks?
1. When the stack finishes operation, disconnect the hydrogen input and output tube from the stack
and also disconnect the power output. Use a tube to connect the hydrogen input to the hydrogen
output of the stack.
2. Store the stack in ambient temperature and in a closed space. Keep it away from toxic gas, such
as So2, H2S, Co.
3. Operate the stack for 2-3 hours every 2 weeks or at least one month in order to maintain the
stability of the stack performance.
4. If the stack has not been used for more than 2 months, the stack power maybe get a little bit
down when you use it again. We suggest at the beginning not to have full load to the stack, try
to have half power for the starting. And then step by step increase to full load, try to increase 5%
every 10 minutes. After this activation process, the stack can reach the rated power within 1-2
hours.
5. If the stack has not been used for more than 2 months and your load could be set to constant
voltage, try to operate the stack under 0.6V/cell. Under this operation mode, the stack can reach
the rated performance within 1-2 hours.
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