
Maintenance
ECA 450
68
Instruction 0024-9400
4.5 Replacing Internal Particulate Filter
An internal particulate filter is located at the inlet of the pump to protect the
pump in the event dirt is drawn into the analyzer’s GAS inlet. Under normal
operating conditions, the probe’s water trap / filter assembly should catch all
dirt particles large enough to damage the pump. But if the probe’s filter fails
or is disconnected, the internal particulate filter will provide backup
protection.
Do the following to replace the internal particulate filter:
Material Required:
• Medium Phillips screwdriver
• Replacement Internal Particulate Filter (refer to Section 6.1)
Procedure:
1.
Turn off analyzer and remove screws from control panel.
2.
Lift up front of control panel to gain access to the particulate filter
located on the right-hand side of the analyzer. See Figure 4-4.
3.
Remove tubing from old filter; then discard filter.
4.
Install tubing onto new filter, being sure to position the filter so that its
flow-arrow points toward the pump. Then reinstall control panel.
Figure 4-4. Replacing the Internal Particulate Filter
PARTICULATE FILTER
(Install with arrow pointing
toward inlet of pump)