EMS 5003 Operator's Manual page 28

· Leak check failures would be if the 5003 model pumps turn on during the 30 sec-
onds. The most common leak location is at the external filter bowl, this can be
check with a butane lighter to see if your HC reading increases. Make sure the filter
is screwed on straight and the O-Ring is moistened. If the leak is at the internal
filter, twist the filter in the hose and make sure zip tie is tight or replace. If a leak is
found in the sample hose or probe, ORDER NEW parts. 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
than standard gasoline or diesel testing. In order to determine a good maintenance
schedule, check the filters once a week with a visual inspection. If a yellowish build
up in the external filter is present, this is oil contamination, and will possibly give you
inaccurate readings due to HC residual build up. This would be seen after ZERO-
ING the unit, and HC readings being displayed without taking an exhaust sample.
This would indicate filter change out is required. For the pre-filter water trap coa-
lescing filter, any yellowish or oil build up would require replacement. Make notes of
how many tests have been preformed so you can get a bench mark for your filter
change out. If you are not changing out and cleaning the filters, this could result in a
bench failure due to oil contamination build up inside the IR bench. Also be careful
of how long you sample this exhaust. A longer test can result in contamination, so
only allow the unit to sample as long as needed. Afterwards, always allow the unit
to purge out any contamination by running fresh air for as long as possible, or a
minimum of 30 minutes or longer. This is the best thing to do after sampling any
engine and will prolong the analyzer component life.
OIL/WATER SEPARATOR: The new High Performance Oil Water Separator,
EMS-5151, has been added as our standard to remove more oil/water before the
automatic drain water trap assembly. The separator should be drained daily by
opening the drain valve on the oil/water reservoir daily. The Small Body Separator,
EMS-5151, has a ball valve drain. The separator will work better in colder weather,
however to enhance the capability of the separator in hot humid weather, EMS
recommends to make a home made oil/water condenser by attaching a ICE bath.
This can be done with a plastic cup filled with ice around the reservoir, or a spot
cooler with compressed air. This simple trick will be very effective in pulling more
moisture out of the sample , very similar to the official state run facilities with DYNO
testing. Give it a try and you will see a huge difference! See pg, 26 for detail pic-
tures.
Maintenance
28