EMS 5002 User manual

Portable Exhaust Gas Analyzer
Operators Manual
Model # 5002 (4 & 5 Gas)Model # 8000 (Wireless)
Emissions Systems, Inc.
480 Wright Dr.
Lake In The Hills, IL. 60156
Voice & Fax: [phone]
Website: www.emsgas.com
Email Address: [email protected]

2
Table of Contents
1. Technical Data ......................................................................... Page 3
2. General Information.................................................................. Page 4
3. Button Operation Model 5002.................................................. Page 5
4. Rear Panel Description............................................................ Page 6
5. Gas Analyzer Preparation........................................................ Page 7
6. Gas Analyzer Operation........................................................... Page 8-10
7. Calibration................................................................................. Page 11-12
8.Error Messages......................................................................... Page 13
9.Maintenance............................................................................. Page 14-23
10. Diagnostic Accessories & Diagnostics...................................... Page 24-25
11. Warranty.................................................................................. Page 26

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Technical Data
Power: 10 -16 VDC
Ranges: HC: 0 - 2000 ppm (0-20,000 ppm High Range)
CO: 0 - 10%
CO2: 0 - 20%
O2: 0 - 25%
NO: 0 - 5000 ppm ( Nitric Oxide ) *
· Warm up: Less than 5 minutes
· Display resolution: HC: 1 ppm vol.
CO: 0.01% vol.
CO2: 0.1% vol.
O2: 0.01% vol.
NO: 1ppm*
· Digital display: Four 0.5” LCD
· Accuracy ( Bar 97 EPAASM ) HC: 4 ppm HC
CO: 0.06% CO
CO2: 0.3% CO2
O2: 0.1% O2
NO: 25 ppm*
· Drift: Zero and span drift are less than ± 0.6% of full scale for the first hour
and less than ± 0.4% of full scale per hour thereafter.
· System response time: Bench: 1.5 Sec/25 ft. hose 5 sec. to 90% of final
reading
· Ambient conditions: 35F (2C) to 120F (45C), rel. humidity 0-98%
· Sample hose:25 feet ( 7.5 m) with QD coupling /200 F Degrees Max.
· Sample probe:Stainless steel 1200 Degrees F ( replaceable flex tip )
Mass: Approx.: 10 LBS. ( 4.5 Kg )
The AMBII I.R Bench from Sensors Inc. was designed to meet the following standards
for emission inspection and maintenance programs:
• BAR97
• OIML R 99 class I
• OIML R 99 class 0
• ISO 3930

4
General Information
Congratulations on your purchase of an EMS Exhaust Gas Analyzer. This product is
designed to assist you in the process of diagnosing driveability issues. With proper care and
maintenance this product will provide accurate information for many years to come.
IMPORTANT NOTE: Moisture is the biggest concern for prolonged good operation of the gas
analyzer, always allow the analyzer to dry out by running the unit with ambient air. This may take only
one auto shut down cycle or as much as 1 hour or more! The analyzer will not be harmed by powering
up and letting it sit in standby mode till ready to use. Running the analyzer with ambient air in-between
sampling and after a day of testing, is the best thing to do for prolonged life of the bench and compo-
nents not allowing the carbon build up due to moisture!
Figure 1 highlights the features and buttons available on the Model 5002 front display
area. The HC will display up to five digits and is in ppm, CO is in percentage, CO2 is in per-
centage, and NOX is in ppm.O2 is in percentage and you can change to either LAMBDA or
AFR. The buttons will be described later in this manual.
Figure 1
ZEROING
BUTTON
MENU
BUTTON
BACK LIGHT
BUTTON
PRINT
BUTTON

5
Button Operation Model 5002
Figure 2 shows the control buttons on the front of the gas analyzer:
1. The “Zero” button has two functions.
a. Zeroing the gas analyzer as needed during use.
b. Restarting the pump following automatic shutdown.
2. The “Menu” button has several functions.
a. Access calibration screen
b. Change between AFR/Lamda
c. Access ERROR message screen
3. The “Print” button is used to print a snapshot of gas reading information. A parallel
printer will need to be connected to the 25 pin connector on the back of the analyzer.
4. The “B/L” button is used to turn the back light off and on. The back light default is in
the on position for all screens. You can turn the back light off on the main sampling
screen only.
Figure 2
12 34

6
Rear Panel Description
Figure 4 shows the view from the back of the analyzer. The specific details of each
item aredescribedbelow,startingfromtheupperleftcorneroftheanalyzer and workingclock-
wise.NOTE:Thestandard EMS filterarranegementhasbeen changedandmustbe upgraded.
Sample Hose Connection: The sample hose connection uses a quick disconnect
coupler. This is helpful for storage of the analyzer and maintenance of the sample hose.
Display Control Switch: The display switch has two basic positions, Computer and
Display. The switch should normally be in the right position “Display”. If you are using
PC software for display or recording, the switch should be in the left position. Note: The
switch direction is based apon you looking at the display. The switch can be
changed any time during operation with out turning the power off.
DB9 Computer Connection: This is used to connect the analyzer to your PC/laptop or
for the wireless antenna.
Power Cord: Connect to the appropriate voltage supply source.
Sample Air Exhaust: The analyzer discharges the sample air out these ports. Do not
plug.
Printer Connection: Connect to an standard parallel printer.
Drain Hose: This hose will drain moisture collected during the sample process.
External Filter,Water Trap, Water Separator: This is the primary sample filter. Filter
maintenance will be discussed in the Maintenance section of this manual.
Figure 4 SAMPLEAIR EXHAUST
EXTERNAL
FILTER
WATERTRAPPRE-
FILTERW/AUTOMATIC
DRAIN
SAMPLE
HOSE CONN. HIGHPERFORMANCE
WATER/OILSEPARATOR
WITHMANUALDRAIN
PRINTER
CONN. COMPUTER
MODE SWITCH
POWER
CORD
DB9
COMPUTER
CONN.
DRAIN
HOSE

7
Gas Analyzer Preparation
Getting started is simple. Figure 5 shows the items you should have received in the
shipping container. Note: This description applies to the Model 5002 analyzer with a
display, see Page 16 for instructions on setting up a Model 5002-W & 8000 bluetooth
wireless analyzer. The first step is assembling the sample hose. Once the sample hose is
assembled, connect the hose to the sample hose fitting on the back of the analyzer.
Figure 5
The next step is providing power to the analyzer. The analyzer should be connected to
a 12v DC power source. You have several options:
1. Cigarette Lighter Connection - Figure 6 (Supplied by EMS)
2. Cigarette lighter to battery connection with adapter - Figure 7(Optional)
3. AC to DC Power Supply - Figure 8 ( 3 AMP min.) Optional)
The Power LED in the lower left corner of the display will light once voltage is applied.
Figure 6 Figure 7 Figure 8

8
Gas Analyzer Operation
Immediately after applying power, the analyzer will display EMS warming up (Figure 9)
for a set amount of time. This starts the analyzer warm-up mode and will continue for approxi-
mately 5 to 10 minutes, depending on ambient temperature. Once the warm-up mode is com-
plete, the analyzer will go into the “ZEROING” mode to set all the gases to zero (Figure 10).
Then the gas sample mode will display all the gas values(Figure 11). Note: If the display
only shows “COMPUTER MODE” (Figure 12), check the “Display/Computer” switch on
the back of the analyzer. The switch should be in the right position.
Figure 9 Figure 10
Figure 11 Figure 12
Once the analyzer has completed the warm-up the sample hose can now be connected
and the probe placed in the tailpipe.
Caution: Exhaust gases pass through the gas analyzer and vent through its ex-
haust. Use the analyzer in a well vented area.
Note: Gas analyzers are designed for diagnostics and verification of repairs. The
sample probe should be removed from the tailpipe after taking readings to prolong
analyzer life and save on maintenance costs.
The pump will continue to operate as long as the CO2 level is above 3%. The pump will
automatically shut-off after the CO2 level has been below 3% for approximately 15 minutes.
The pump can be turned back on by depressing the “ZERO” button.
Caution: Monitor the clear hose between the filter assembly and the cabinet. If
moisture appears in the tubing, remove the probe from the tailpipe and disconnect the
sample hose from the analyzer immediately. Use compressed air to remove moisture
from the sample hose. Operate the analzyer without the exhaust hose connected, until
the moisture is removed. It may be necessary to replace the filters. Once the lines are
dry, normal operation can continue.

9
Gas Analyzer Operation
Manual Zero: Any time after warm-up, you can zero the gas readings and calibrate O2
by pressing the “ZERO” button (Figure 13). When this operation is being done “ZEROING”
will be displayed (Figure 14). The analyzer will shut down automatically if no CO2 is detected
after approx. 15 min. If the pump is off, “STAND BY” will be displayed (Figure 15). Push the
“ZERO” key and the pumps will automatically start. Note: The sample probe should be
removed from the tailpipe, when the unit is being zeroed.
Automatic Zero: The analyzer will automatically zero as needed. If the analyzer does
not sense exhaust gases, the automatic zero procedure will begin. “ZEROING” will be dis-
played during this process. If exhaust gases are present, the analyzer will wait until the gases
are clear.
Figure 16
Low Flow Warning: If gas flow into the bench becomes restricted due to clogged filters or
restricted sample hose, the screen will indicate “LOW FLOW” (Figure 16). Check the
sample hose for restrictions or kinks. If no problems are found, check the filters. Begin with
the External filter and then check the Internal filter. Keep in mind the gas flows through the
inside to the outside of the filter. The filter may look clean on the outside, but be clogged on
the inside. The best check is to look at the bootom of the external filter. If the LOW FLOW
continues to be displayed, the solenoid valve will need to be replaced due to cardon build-up.
Figure 13 Figure 14
Figure 15

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Computer Connection: PC software can enhance the diagnostic benefits of the ana-
lyzer. The analyzer can be connected to a PC using a 9 pin serial communications cable
(DB9). EMS offers software that will display the sample gases, graph data and record informa-
tion. Using the portable gas analyzer with a laptop will help diagnose problems that only occur
when driving. The EMS software will be discussed later in this manual.
Printing: Connect a parallel printer to the 25 pin connector on the back of the analyzer. Press
the “P” button to begin the printing process. The print button prints the gases as displayed
when depressed, Figure 17 shows how the gases will be printed. Note: To avoid print com-
munication problems, connect and power on the printer first, then provide power to the
analyzer.
Gas Analyzer Operation
Figure 17

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The gas analyzer should be checked periodically for accuracy, for normal shops unsing
the analyzer this would be approx. 6-9 months. For higher useage approx. every 3 months..
The analyzer can be calibrated in the field. In order to perform the calibration procedure you
will need a bottle of calibration gas and a calibration kit assembly (Figure 18). The calibration
assembly can be purchased from EMS or your local distributor. The recommended calibration
gas is Bar 97 Low and can be purchased from EMS, Part No.EMS-5502, BAR 97 LOW
Calibration
Figure 18
Calibration Procedure:
1. To begin the calibration procedure depress the “Menu” button on the sampling
screen.The main menu screen will show you the “CAL” button (Figure 19).Press the
“CAL” button and the display will show the stored calibration gas values (Figure 20),
compare these numbers to the calibration gas bottle. If the numbers do not match,
change the values using the “L” and “INC” buttons. The “_” indicates which # will
change, the “L” button move the _ left to the next digit, the “INC” changes the value.
This process is continued until all the calibration gas values are correct. At this point
press the “CAL” button.
Figure 19 Figure 20

12
Calibration
2. The screen will display “sending cal data” (figure 21).Once the calibration gas values
have been sent to the bench,the calibration procedure can continue.
3. The screen will display the gases (Figure 22)and the message to connect the CAl
gas. Connect the hose from the regulator assembly to the sample hose inlet. Open the
valve on the gas bottle. (Note: Do not adjust the regulator, this was preset to the
appropriate flow rate.) Once the calibration gas values stabilize, depress the “CAL”
button. The analyzer will capture the gas concentrations and perform the final calibra-
tion procedure. The calibration process is now complete.
4. The screen will display a message “ calibration complete” (Figure 23). If the calibra-
tion procedure was canceled, the screen will display a message “calibration canceled”
(Figure 24), if the calibration was unsuccessful, an error message will be displayed on
the main sampling screen. If this occurs, go to the menu screen and errors. one of the
gases will show up as “HC or CO or CO2 C Warn”. Go back to the main sampling
screen and “ZERO” the unit to clear the error. After either situation, perform the calibra-
tion procedure again. If the problem continues, contact EMS or your local distributor.
NOTE: The hydrocarbon gas in the calibration cylinder is propane, and the gas ana-
lyzer generally measures hexane. This is problematical, as hexane is a molecule that is
about twice as large as propane. This means that the typical HC reading on the gas
analyzer (hexane) should be about ½ the propane value on the calibration cylinder tag.
That is, if the tag states that the cylinder contains 1200 ppm propane, then an analyzer
measuring HC as hexane will report HC at about 600 ppm.
Figure 21 Figure 22
Figure 23 Figure 24

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ERROR MESSAGES
If the optical bench detcts any errors during operation, a message will be displayed on the
sampling screen “SEE ERRORS” (Figure 25). If this message comes up, depress the menu
button, and the main menu screen will be displayed (Figure26). Depress the “errors button”
and the errors screen will be displayed (Figure 27). At this point you can see any errors being
sent from the optical bench. The errors that would possibly be displayed are:
- HC C WARN: This could be a bad calibration or bad optical bench.
- CO C WARN: This could be a bad calibration or a bad optical bench.
- CO2 C WARN: This could be abad calibration or a bad optical bench.
- NOX C WARN: This could be a bad calibration or a bad NOX sensor.
- O2 C WARN: This would be a bad O2 sensor.
If an error message does appear and is just bad calibration or something the optical bench
detected as not normal, depress the “ZERO” button on the main sampling screen to clear the
error. If the error message doesn’t go away, either the bench has an error or is bad or one of
the sensors ( O2, NOX) need to be replaced.
Figure 25
Figure 26 Figure 27

14
Maintenance
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.TheExternalFilter should becheckedoften(Figure 29NOTE:Thisfilterhas beendis-
continuedas ofAug2017 see pg. 16for replacement filter ).Thisfilter catches most ofthe par-
ticlesand impurities.The life-cycle ofthis filterdepends on usage,but the averageshop replace-
mentis 3months.Todetermine thecorrect replacementinterval foryour shop,check thefilter
oncea month. Keepin mind thebottom port ofthe External Filterhas a 1/4plastic cap thatmust
bere-used orreplaced when anew filter isinstalled. Notplugging the bottomof thefilter will cause
O2contamination.Another wayto keeptrack ofreplacement intervalsisto writethe replacement
dateon thefilter with amarker.
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.
External Filter Discontin-
ued!
Sample Hose Assembly
Figure 28 Figure 29
PLASTIC CAP 1/4”
RE-USE/REPLACE

15
Maintenance
Internal Analyzer Maintenance:
The maintenance items discussed below are located inside the analyzer. The outside
cover will need to be removed to gain access. The cover is held in place with 12 screws, 5 on
each side panel and two at the top behind the handle.
3. The Internal Filter is located inside the analyzer (Figure 30). This filter is designed to
catch particles missed by the External Filter. The replacement interval varies, but a good
starting point, is replacing the filter every other time you replace the External Filter. Note: This
filter is directional, check the arrow on the filter.
4. Oxygen Sensor should be replaced as required (Figure 31). Replacement intervals
will vary, but the average life-cycle is 9 to 12 months. A fault code will flash when the sensor
needs to be replaced, the analyzer cannot be used until the sensor is replaced. To avoid
unexpected down time, the O2 sensor display can be monitored, if the reading drops below
17.0% the O2 sensor should be replaced or with a volt meter when below 5 MV. Average O2
sensor lofe is approx. 1 year. The oxygen sensor is located inside the analyzer.
a. Remove the analyzer cover. Note: The power should be disconnected prior to
cover removal. The sensor is located at the left rear of the analyzer (Figure 31).
b. Disconnect the two wire connector from the sensor. Rotate the sensor
counter-clockwise.
c. Install the new sensor, rotate clockwise until the o-ring seats. Re-connect the
two wire connector. Replace the cover and power the analyzer. No additional
steps are required.
5. NOx Sensor should be replaced as required (Figure 32). Replacement intervals will
vary. A error will message will be displayed when the sensor needs to be replaced. The aver-
age life of a NOX sensor is approx. 3 years.
a. Remove the analyzer cover. Note: The power should be disconnected prior to
cover removal. The sensor is located at the left rear of the analyzer (Figure 32).
b. Disconnect the four wire connector from the sensor. Rotate the sensor
counter-clockwise.
c. Install the new sensor, rotate clockwise until the o-ring seats. Re-connect the
four wire connector. Replace cover and power the analyzer. No additional steps
are required. Figure 31Figure 30
Internal Filter Oxygen Sensor
Figure 32
NOx Sensor
NOx
Sensor
O2
Sensor
O2
Sensor

16
Maintenance
TheNEW EMS filterHousing assembly ( Fig33) is part#: EMS-5370 (External particulate)
andWaterTrapassembly is part# EMS-5372(EMS-5371 coalescing filter). Maintenanceproce-
dures are described below:
1.The ExternalFilter should bechecked often(Figure 34;EMS-5371). This filtercatches
mostof theparticles and impurities.The life-cycleof this filterdepends on usage,but theaverage
shopreplacement is3 months.To determinethe correctreplacement intervalfor yourshop, check
thefilter once amonth (EMS-5070). Thewater trap filteris thesame coalescing filter(Figure 35;
EMS-5372)with the samplegas flow frominside out, soNO contamination can bevisibly seen as
withthe externalfilter.The watertrap filter isa disposiblefilter and shouldbe changedevery 3
months.
Filter Replacement:
a.Remove thefilter bowlturning clockwiseto loosenthe bowl.
b.Rotate thefilter retainer belowthe filterclockwise toremove.
c.Replace thefilterand re-screwin theretainer turningcounter-clockwise.
d.Re-installthe filterbowl tigheningcounter clockwise.
e.The watertrap bowlis thesame as theexternal filteronly thatthe waterdrain hise
needsto bedisconnected andre-connected after filterreplacement.
f. Do a leak check to make sure of NO leaks.
Figure 33 Figure 34

17
Maintenance
Theabove picshows adual filter arrangementfor industrialtesting, NEW EMSfilter Hous-
ingassembly ispart #:EMS-5370-DualAssy.2x (External particulate)and WaterTrapassembly
is part # EMS-5372 (EMS-5371 coalescing filter). Maintenance procedures are described below:
1.The ExternalFilter should bechecked often(Figure 36;EMS-5371). This filtercatches
mostof theparticles and impurities.The life-cycleof this filterdepends on usage,but theaverage
shopreplacement is3 months.To determinethe correctreplacement intervalfor yourshop, check
thefilter oncea month (EMS-5070).The watertrap filter isthe samecoalescing filter withthe
samplegas flowfrom inside out,so NOcontamination can bevisibly seenas with theexternal
filter.The watertrap filteris a disposiblefilter andshould be changedevery 3 months.
Filter Replacement:
a.Remove thefilter bowlturning clockwiseto loosenthe bowl.
b.Rotate thefilter retainer belowthe filterclockwise toremove.
c.Replace thefilterand re-screwin theretainer turningcounter-clockwise.
d.Re-installthe filterbowl tigheningcounter clockwise.
e.The watertrap bowlis thesame as theexternal filteronly thatthe waterdrain hise
needsto bedisconnected andre-connected after filterreplacement.
f. Do a leak check to make sure of NO leaks.

18
The parts in need of consistent interval change out are the external & internal filters and the
O2 sensor. The intervals, tools needed, part #’s, and other maintenance tips for instrument life
are described below:
1) Internal Filter; part #: EMS-5093; 90 DAY (3 month min.) Interval.
· TOOLS: 2 mm key style allen wrench, needle nose pliers, wire/zip tie strap
cutter .
· Remove the 11 or 12 #6 button head screws with 2mm allen. Be careful not to
strip allen head when loosening & ONLY FINGER tight when tightening.
· Remove the cover, int. filter located in the back right, cut off zip ties and use
needle nose pliers to remove the hose. Install new filter and attach two (2) new
zip ties on each end to ensure no LEAKS. Attach cover back on the main hous-
ing.
2) External Filter; part #: EMS-5371; 90 DAY (3 month min) Interval.
· TOOLS:Nonerequired.
· Externalfilter is locatedon theback side anglebracket, remove thefilter bowl from
thefilter head,turn clockwisetoloosen andremove.Loosen theretainer holdingthe
filterturning clockwise.replace thefilter,screwfilter retainercounterclockwiseto
tighten.Make surethe filter goeson straight, thisis themost common pointfor
leaks!Screw onfilter bowl turningcounterclockwise. Doa leak checkafter any
filterchange.
3) O2 Sensor; part #: EMS-5060; 12-18 month (1- 1 1/2 Year) Interval or ERROR code O2
C WARN 5002 model.
· TOOLS: 2 mm key style allen wrench
· Remove the 11 or 12 #6 button head screws with 2mm allen. Be careful not to
strip allen head when loosening & ONLY FINGER tight when tightening.
· Open O2 container, remove plastic sticker on bottom of sensor, and turn upside
down back inside the container. Allow to breath for 15-20 minutes. Remove the
cover, O2 located in the back left. Unplug the three pin connector on the top of
the sensor, loosen turning counter clockwise and remove. Install new sensor,
marking install date, turning clockwise into the sensor block. Re-attach the three
pin connector to the sensor. Attach cover back on the main housing.
These three items must be regularly changed out per the above intervals. Other
items not as critical or more complicated are described below and should be
maintained at the intervals indicated.
Maintenance

19
Maintenance
4) NOX Sensor; part #: EMS-5065; 6 month min. re-calibration for accuracy and 2-3 Year
Interval change out, or ERROR code NOX Z WARN 5002 model.
· NOX Sensors should re-calibrated a min of 6 month intervals. New NOX sen-
sors require re-calibration as well as NOX accuracy checks.
· NOX Sensor NOX C WARN model 5002 will appear if the sensor is bad.
· TOOLS: 2 mm key style allen wrench
· Remove the 12 #6 button head screws with 2mm allen. Be careful not to strip
allen head when loosening & ONLY FINGER tight when tightening.
· Remove the cover, NOX located in the back left. Unplug the four pin connector
on the top of the sensor, loosen turning counter clockwise and remove. Install
new sensor, marking install date, turning clockwise into the sensor block. Re-
attach the four pin connector to the sensor. Attach cover back on the main
housing.
5) 5) Water Trap Assembly Filter; part #: EMS-5371; 3-6 month min. Interval
· WaterTrapAssembly filter isa disposable filter, with thesample flow frominside/
outso youwill not seecontamination. Carbon buildup couldcause a LOWFlow
error.Unscrew thefilter bowlturningclockwise toloosen. Unscrewthe filterretainer
turningclockwise,remove thecoalescingfilter.Installnewfilter,tightenfilter re-
tainercounterclockwise, Screwonthe filterbowl turningcounter clockwiseto
tighten.NOTE: Theair flowthrough thisfilter isfrom theinside/out, soto inspect
thefilter contamination,the coalescing filtermust be removedto inspect.
6) General Every Day Operation Tips for Instrument Life.
· Turn the 4 or 5 gas on in the morning in display mode and allow the instrument
to warm up and go into auto shut down mode. This will keep the bench ready
for use when needed, with out having to wait for the instrument to warm up.
This will not damage the unit and help save time when your ready to use the
analyzer.
·

20
Maintenance
Moisture is your BIGGEST enemy forthis instrumentlife! If anymoisture build upis
visibleinthe analyzerclear hoses,allowthe instrumenttodry outby runningambi-
entairthrough theanalyzercontinuously foraminimum of30minutes oruntilNO
moistureis presentin the hoses.
· SampleHose and S.S. probeshould be blown outwith compressed air at theend
ofthe day.Moisture buildup will leavecarbon build upinside the hoseand deterio-
ratethe hose causing leaks. Clean samplehose once or twice a yearby soaking in
hotsoapy water, blowout with compressedair.
· LeakCheck shouldbe performed afterevery filter changeout to insureno O2leaks
causinginvalid gasreadings. Plugthe inletquick connectoron theanalyzer foran
internalleak check.The model 5002will showLOW FLOW onthe screenand the
pumpswill shutoff, and ifthe pumps stayoff 30 secondsthere are noleaks.
· LeakCheck yoursample hoseand probeevery filterchange outonly afteryou have
verifiednointernal instrumentleaks. Connectthesample hoseto theanalyzer and
plugthe end ofthe probe withthe red/black plasticcap supplied byEMS. The
samelow flow codeswill come upas described above andthe low flowshould hold
for30 seconds.
· Leakcheck failures wouldbe if the5002 model pumpsturn on during the30 sec-
onds.The mostcommon leak locationis atthe external filterhead, thiscan be
checkwith a butanelighter to seeif your HCreading increases. Makesure the filter
isscrewed onstraight and theO-Ring is moistened.If the leakis atthe internal
filter, twist thefilter in the hoseand make sure ziptie is tightor replace. If aleak is
foundin the sample hoseor probe, ORDER NEWparts. Sample Hose part#:
EMS-5096-25, Handle part #: EMS-5097, S.S. Probe part #: EMS-5098.
·Two Cycle gasoline testing:Two cycle fuel is much more of a maintenance issue
thanstandard gasolineor diesel testing.In order todetermine a goodmaintenance
schedule,check thefilters oncea weekwith avisual inspection.If ayellowish build
upin theexternal filteris present, thisis oilcontamination, andwill possibly giveyou
inaccuratereadings dueto HC residualbuild up. Thiswould beseen after ZERO-
INGthe unit,andHC readingsbeing displayedwithout takingan exhaustsample.
Thiswould indicatefilter change outis required.For the pre-filterwater trap sin-
teredbronzefilter,anyyellowish oroil buildup wouldrequire cleaningwith hot
soapywater.Make notesof howmany testshave beenpreformed so youcan get a
benchmarkfor yourfilter changeout orcleaning.If youare notchanging outand
cleaningthe filters,this couldresult ina benchfailure dueto oil contaminationbuild
upinside theIRbench.Alsobe carefulof howlongyou samplethis exhaust.A
longertest canresult incontamination, soonly allowthe unitto sampleas longas
needed,andafterwards, alwaysallow theunit topurgeout anycontamination by
runningfresh airforas longas possible, ora minimum of15 minutes orauto shut
downin stand bymode. This isthe best thingto doafter sampling anyengine and
willprolongtheanalyzer componentlife.