NM20ZA Service Manual Rev 14
NM20ZA
Service Manual – Revision 13
7
Electrical Connection
Important Electrical Notice
This unit is classified as
SAFETY CLASS
1 equipment
. THIS UNIT MUST BE EARTHED.
Before
connecting the unit to the mains supply, please check the information on the serial plate. The mains
supply must be of the stated AC voltage and frequency.
The Electrical requirement is 230Vac (50/60 Hz), 5.0 Amps
EARTH/GROUND (E):-
Green & Yellow
OR.
Green
LIVE (L):-
Brown
Black
Neutral (N):-
Blue
White
Connect the generator to a single-phase supply using the power cord provided.
8
Operator Training
The NM20ZA Laboratory Gas Generator is designed specifically to minimize operator
involvement. Given that the generator is installed as described in earlier sections and is
serviced in accordance with the following maintenance recommendations then it should simply
be a matter of turning the generator on. The generator will automatically produce the factory
default flows and pressures noted 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
Should the demand for gas be less than the rated flow then the generator will automatically
regulate the internal pressure and cycle of the compressors as required. This should be all the
input your generator requires from you, the only additional tasks required are,
•
If at any time the generator begins to emit excessive noise or vibration, then it should
be switched off and you should contact your local representative or the factory as soon
as possible.
•
Please ensure that the drain port at the rear of the generator is led to a suitable
connection or container. It should be noted that the generator will liberate considerable
amounts of water from this port (approx. 1-2 litres weekly). If a container is used it
should be emptied at regular intervals.
•
Ensure that the generator is serviced in accordance with the following maintenance
recommendations.
10
