E8500 Instruction & Operations Manual
version 1.017
Page 40 of 49
CHAPTER 12
MAINTENANCE
The E8500 Plus emissions analyzer is a sophisticated analytical instrument designed to
perform accurate emissions measurements. However, because the analyzer is a
portable, field use instrument that can be used in many environments, care must be
taken to prevent physical and environmental abuse to help maintain trouble-free
operation.
There are four components that will require periodic inspection or replacement. These
are:
1. The disposable fiber line filter for particulates
2. The disposable condensation disk filter for residual moisture
3. Gas sensor periodic replacement
4. Printer paper replacement
A. Fiber Line Filter and Condensation Disk Filter replacement
The disposable fiber line filter is located inside the analyzer just behind an easily
removable panel on the top face of the analyzer next to the keypad. Its function is to
prevent soot, smoke, & dust particles from reaching the analyzer pump and sensors.
The disk condensation filter is located inside the analyzer downstream of the line filter.
Its function is to prevent any residual water from penetrating into the sensor area.
The filters should be replaced when they become significantly discolored and/or show
any signs of cracks.
Never operate the analyzer without the filters properly in place
.
Frequency of filter replacement depends on the type of fuel burned in the combustion
process being measured and the hours of active operations.
Turn the analyzer
OFF
before replacing any of the filters.
To replace the line filter, turn the four black captive screws and pull out the panel to
access the filter
as shown in the photo on the next page
. Disconnect the two pieces
of flexible tubing that holds the line filter in place, and reconnect the hoses to the new
filter. Push the new line filter into the metal holder on the inside part of the removable
panel. Then push the removable panel back into place and reconnect the four black
captive screws.
