<7. Maintenance>
7-4
IM 11R02A01-02E
5th Edition : Dec. 28, 2016-00
7.2.4
Washing Bubbler or Pressure Regulating Pot
If inside of case becomes dirty by the weeds grown in the water, pull the plug at the bottom of the
bubbler to drain and refill it with clean water. If inside the bubbler is stained, remove the cover and
clean inside of the bubbler. Be careful not to scatter the water around the panel when you drain
the water.
When the water level becomes higher than the drain outlet position, there would be a possible
contamination in the exhaust pipe line, so the cleaning is necessary.
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F12-6.ai
Figure 7.5 Washing Bubbler and Pressure Regulating Pot
7.2.5
Dehumidifier (For Steel Mill Use)
The washing bubbler cannot eliminate all of the naphthalene if it is contained too much in a
sample gas. The naphthalene may be crystallized and clog the piping inside of dehumidifier. In
such a case, stop the sample gas flow, remove the 4 pipes at the top of the dehumidifier and
introduce hot water of 70°C to 80°C. The naphthalene is dissolved into the hot water and is
eliminated.
FULFLO FILTER
PRESSURE REDUCING VALVE
(ORIFICE ASSEMBLY)
DENSITY METER
CIRCUIT BREAKER
POWER
COOL
POWER LAMP
COOL LAMP
DRAIN
(TO PRESSURE REGULATING POT)
TERMINAL BLOCK
F11-7.ai
Figure 7.6 Dehumidifier
7.2.6
Density Meter
It is recommended to replace the O-ring of the GD300S detector every 2 or 3 years and wash the
sensor if necessary. Consult to our service for washing the sensor.
