Precision 500
User Manual
Page 13
2012 © Peak Scientific – Rev 2 – 07/11/12
Generator Safety Features
The Precision 500 hydrogen generator has the following safety features to
ensure safe and reliable operation:
1.
To avoid any build up of hydrogen from leaks inside the unit; the
generator features forced air ventilation. This ensures that a hydrogen /
oxygen mixture cannot form inside the generator.
2.
On power-up the generator self checks for internal leaks and if required
it will shutdown at the end of the System Check informing the operator
with a visual alarm.
3.
The generator will detect any hydrogen leaks that occur within the
generator, the user’s application and gas lines. In the event of a major
leak the generator will automatically shutdown within 20 minutes.
4.
The hydrogen pressure inside the generator should only reach a
maximum of 7.5 bar (110psi) and this is controlled in two ways:
a.
Gas pressure is monitored and controlled electronically by a
pressure sensor
b.
A mechanical pressure switch (Fail Safe) will electrically isolate
the hydrogen cell should the internal pressure reach 7.5 bar
(110psi)
5.
When the generator is in alarm status the following occurs:
a.
The current to the cell is stopped so no hydrogen is generated
therefore preventing a hazardous situation.
b.
The over pressure relief valve opens allowing the unit to
depressurise.
c.
An audible and visual alarm relevant to the fault condition is
displayed. The generator can sense for internal and external
leaks, excessive gas demand and lack of water.
