NM20ZA Service Manual Rev 14
NM20ZA
Service Manual – Revision 13
9
START-UP Sequence.
With the generator installed as described previously, disconnect the Curtain, Source and
Exhaust gas outputs
(ENSURING THAT ANY INTERNAL PRESSURE HAS BEEN SAFELY
DISSIPATED)
, and switch the generator on. The on/off switch should illuminate and the
cooling fans should start immediately. There will be a 10 second delay before the first
compressor starts, then after a further 3 seconds the second compressor should also start.
The three pressure gauges on the front panel will begin to climb, and after approx 3 minutes
the gauges should all have reached their rated pressure of either 60 or 100 PSI.G. The output
flows from the generator should now be measured to ensure they conform to the specification
below.
CURTAIN
5 litres per min (ATP)
60 PSI.G
SOURCE
22 litres per min (ATP)
100 PSI.G
EXHAUST
8 litres per min (ATP)
60 PSI.G
The generator should now be left to run for approx. 1 hour to allow the generator to fully flush
the internal receivers etc. of air and allow the membranes to stabilize. After this time the
Curtain, Source and Exhaust outputs can be re-connected and the interconnecting pipe work
checked carefully for leakage.
10
Pressure & Flow Settings
.
Output pressures and flow rates are controlled by pressure regulators located behind the left side panel
as shown below. The Factory settings for the 3 outputs are shown above:-
The above settings should allow the PSI Gas Station to be operated with all standard configurations for
the Api range of LC/MS/MS instruments. Should the above settings not provide sufficient flow or pressure
for your application please contact the factory for assistance.
Pressure Regulators
Flow Controllers
11