2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000
3.15-1
3.15
3.15
Installing an AC power stabilizer
When the power sinks below 180V AC ( also when only a short interruption ), a stabilizer
is recommended.
The analyser can draw during combustion up to 20A, in some cases up to 30A.
The maximum current depends on the furnace current you have chosen.
It is not necessary to stabilize the controlled furnace current.
1 Analyser
2 Balance
3 Printer
4 Computer
5 Monitor
6 Power strip
7 IR-cell
8 TC-cell
9 Electronics unit
10 Triple plug
11 Voltage stabilizer
12 Original IR power cable
13 Original TC power cable
14 Original electronic power cable
15 Mains power link
It is sufficient if the electronics unit ( 9 ) the infrared cell ( 7 ) and TC cell ( 8 ) is
protected by the stabilizer ( 11 ). This is simple to do, as units ( 7 / 8 / 9 ) use standard
plugs.
It is then advisable to protect the balance ( 2 ), the printer ( 3 ) and the computer ( 4 )
with a stabilizer ( 11 ).
The stabilizer ( 11 ) is plugged into the triple plug ( 10 ) ( rear of the analyzer ).
The electronics unit ( 9 ), the infrared cell ( 7 ) and the TC cell ( 8 ) are plugged into a
power strip ( 6 ), using a normal power cable ( the device cable ).
The original power plugs ( 12 / 13 / 14 ) of the units ( 7 / 8 / 9 ) are simply unplugged
and left hanging.
In cases when the voltage of the power line is always too low and may, even
temporarily, be lower than 200 VAC, a simple transformer can be used instead of a
stabilizer.
The power of the transformer should be at least 100 VA. The primary voltage should
be 220V to 240V. The secondary voltage should be about 20V higher than the primary
voltage. For example Pr 220V / sec 240V or Pr 230V / sec 250V.
Ser ial No.:
Volts AC :
Amps :
Watts :
Hz : 50-60
7500 max.
400 +/-10% 3Ph
XXXXXX XXXX
M odel No. :
30 m ax.
ON 90 0
5
4
10
15
3 2
8
7
13
14
9
12
1
6
11
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