Page 20
Normal Operation
The Genius N118LA & N418LA Gas Generators are designed specifically to
minimize operator involvement. Given that the systems are installed as described
in earlier sections and is serviced in accordance with the specified maintenance
recommendations (see Service Requirements), then it should simply be a matter of
turning the Generator on when it is required.
The Generator will automatically produce the factory set flow and pressure as detailed
in the Technical Specifications.
On Demand Gas
The generator will produce nitrogen on demand. If the application is operating
and requires a gas flow, the system it is connected to will supply this to suit the
requirements of the application. If the application requirement for gas stops, the system
will also stop, once it has reached its upper set limit in the internal storage tanks. If the
demand from the application starts again, the system will detect the demand for gas
and will automatically start again to suit the demand.
Generator Cycling
The Generator is designed for the internal compressors to cycle. This cycling reduces
the duty (run time) on the compressors. The rate at which they cycle will be dependent
on the gas required to satisfy the demand of the application. If the application demands
the maximum gas flow of the Generator, the compressor duty will be higher, (the rest
period in the compressor cycle will be shorter). If the application demand is lower than
the maximum gas flow, then the duty on the compressors will decrease, (the rest period
in the compressor cycle will be longer). If the Generator is installed in an extreme
environment or is subjected to low supply voltage or high altitude the compressors may
undergo periods where they do not cycle.
Unusual Operation
If at any time the generator begins to emit excessive noise or vibration, then it should
be switched off and you should contact Peak Scientific or the Peak Partner from which
the generator has been purchased.
Sleep Mode - N418LA Only
The generator also includes an optional Sleep Mode function that will operate if the
Instrument it is supplying goes into a standby or shutdown.
When enabled this function detects if the gas consumption rate falls below 2 l/min. If
the consumption rate does fall below 2 l/min then it will drop the lower pressure set
point from 110psi to 80psi. This allows the compressor to rest for longer periods of time,
extending the life of the unit. Sleep mode is enabled as standard.
