2 Installation
2-2. Installation of pyrolyzer unit
PLU-70
- 12 -
Heat radiation designing
•
Do not block the ventilation holes when you install the pyrolyzer unit on or under the gas detector head.
It is recommended that installation points of the sets should be away from each other for 10 mm or more.
Intervals between installation points must be at least 5 mm.
•
When it is installed in the closed instrumentation board, attach ventilation fans above and below the
board.
2-2. Installation of pyrolyzer unit
CAUTION
•
Install the pyrolyzer unit near the base unit, gas detector head GD-70D series. See the
descriptions in this section and the gas detector head GD-70D series operating manual before
carrying out installation.
•
Before installing the pyrolyzer unit, remove the protective rubber caps from GAS IN and GAS
OUT. If the pyrolyzer unit turned on with the rubber caps remaining while the installation, applied
overload may damage the pump and sensor. Do not forget to remove the caps.
CAUTION
•
When the internal temperature of the pyrolyzer unit reaches about 60
°
C, a trouble alarm is issued
by the gas detector head, resulting in a halt of the pyrolyzer heater. Since the internal
temperature rises to ten-odd degrees higher than the ambient temperature, take care not to let
the ambient temperature exceed 40
°
C. Provide a clearance of 30 mm or more above the
pyrolyzer unit to prevent a rise in the internal temperature.
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