Maintenance - EMS 5002 Operator's Manual

Maintenance of the analyzer is essential for accuracy and optimal performance. The
filters, hoses and connections should be checked on a regular basis. Maintenance of the gas
analyzer is simple and only requires a few minutes, but the time you spend will pay off, with
accuracy during the diagnostic process. Specific maintenance procedures are described
below:
External Analyzer Maintenance:
1. The exhaust sample hose should be cleaned once a week (Figure 28). Disconnect
the hose from the filter assembly and blow shop air through the hose. This will remove carbon,
dirt and moisture that collects inside the hose. The exhaust probe tip should be checked for
leakage around the flex tube. Exhaust gas should only enter through the holes in the exhaust
tip end. If the flex tube is worn and loose, oxygen may enter around the worn flex tube. A
simple way to check the flex tube is blowing shop air through the hose and spraying soapy
water around the flex tube. If bubbles are seen the exhaust probe tip should be replaced. The
sample hose and plumbling should be checked for leaks. Checking for leaks is simple, with the
analyzer in sample mode, place a rubber cap over the probe tip holes. Within a few seconds
the analyzer display should read low flow. If this does not occur a leak is present in the sys-
tem. Check the sample hose for leaks first, check the external filter next and finally the internal
hoses. Contact EMS or your local distrubutor for assistance if required.
2. The External Filter should be checked often
continued as of Aug 2017 see pg. 16 for replacement filter ).
ticles and impurities. The life-cycle of this filter depends on usage, but the average shop replace-
ment is 3 months. To determine the correct replacement interval for your shop, check the filter
once a month. Keep in mind the bottom port of the External Filter has a 1/4 plastic cap that must
be re-used or replaced when a new filter is installed. Not plugging the bottom of the filter will cause
O2 contamination. Another way to keep track of replacement intervals is to write the replacement
date on the filter with a marker.
Filter Replacement:
a. Remove Plastic Cap from the bottom of the filter.
b. Rotate the filter counter-clockwise to remove.
c. The new filter o-ring should be lubricated prior to installation.
d. Re-install the filter assembly clockwise hand tight, replace Plastic Cap.
Sample Hose Assembly

Maintenance

Figure 28
(Figure 29 NOTE: This filter has been dis-
This filter catches most of the par-
PLASTIC CAP 1/4"
RE-USE/REPLACE
14
Figure 29
External Filter Discontin-
ued!