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6.0 MAINTENANCE
When finished operating the stack, we highly suggest that inject pure water into
the stack before place it back in the supplied air tight container to keep the stack
from getting too dry.
Injecting water into the stack:
1. Connect a short section of hosing to the gas port marked "H2 Input" and
another one to the"H2 Output" port.
2. Fill a syringe with pure water (distilled) and connect it to the hose attached to
the "H2 Input" port.
3. Inject pure water into the stack until you see water coming out of the hose
connected to the "H2 Output" port. Keep the water inside the stack. Disconnect
the syringe.
4. We strongly recommend you connect a small hose to both "H2 Input" and "H2
Output" ports.
If the stack is un-used for a long period of time (more than 4 weeks):
Rejuvenate by injecting water into the stack before use:
1. Connect a short section of hosing to the gas port marked "H2 Input" and
another one to the"H2 Output" port.
2. Fill a syringe with pure water (distilled) and connect it to the hose attached to
the "H2 Input" port.
3. Inject pure water into the stack until you see water coming out of the hose
connected to the "H2 Output" port. Keep the water inside the stack for about 5
minutes. Now disconnect the syringe, and leave the water in the two hoses.
4. Purged the water out of the stack thoroughly before use. This is done by
connecting the H2 supply to the stack, without a load attached, and purging the
stack thoroughly (i.e. letting hydrogen flow through the stack to remove water and
other contaminants). Make sure the hydrogen supply pressure is not >0.5bar.
WARNING!
1. Please make sure you have purged the water out of the stack thoroughly before
use.
2. Using the fuel cell stack with water inside can irreparably damage it!
WARNING!
Disconnect the hydrogen supply completely if the fuel cell is not in operation for
more than 30 mins. This is to stop hydrogen gas leaking into the fuel cell and
destroying some of the parts.
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