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Frequently Asked Questions
Industrial
Lift Trucks | Motorcycle
Tuning | OSHA Compliance
Frequently Asked
Questions – Industrial Lift Trucks
Q. At what level of carbon monoxide do I set my
carburetor?
A. Carburetor and fuel injector manufacturers
recommend carbon monoxide levels be between 0.4 to 0.7% at idle and
at full load. Blanke Industries recommends a level of 0.5% CO.
Q. OSHA measures CO in parts per million, ppm.
What is that in percent?
A. 10% CO is 100,000 ppm,
1% CO is 10,000 ppm,
0.5% CO is 5,000 ppm,
0.1% CO is 1,000 ppm and
0.01% CO 100 ppm.
Q. How much fuel am I wasting with my industrial
lift truck fleet?
A. If a technician adjusts the carburetor by ear
and adjusts for the peak rpm at idle and at full load, the CO will
be between 3% and 8%. At these levels each lift truck will be
wasting 250 to 800 gallons of propane per year on a single shift and
750 to 2400 gallons per year on three shifts
Q. The manufacturer says we need a four or five gas analyzer. Are they right?
A. Manufacturers recommend multiple gases because that is how California requires them to report emissions. These laboratory grade gas analyzers are used in conjunction with dynamometers and report results in grams per horsepower hour and not in percent like the instruments you use. In order to maintain California’s emission certification, a small number of engines from the field are tested annually by the manufacturer. This insures their durability and their emissions stay within specifications throughout the useful life of the engine.
Unless the manufacturer gives you pass/fail levels for carbon monoxide, hydrocarbons, carbon dioxide, oxygen and oxides of nitrogen, you have no ability to separate good engine performance from bad. You could own a very expensive analyzer and use only the CO channel. This is wasteful and complicates a tune-up.
Blanke Industries approach is to recommend a four or five-gas analyzer in the main shop if the data is required to support warranty claims to the manufacturer. A single CO analyzer is all that is needed for all other shop and field related tune-ups. It is easier to use, faster, more rugged and does not require a technician to be schooled in the nuances of reading four or five gases, which are constantly changing under different engine conditions.
In the heyday of auto emissions tune-ups, technicians took 40 hour courses to understand how to use all five gases to make an accurate diagnosis. This level of training is needed to keep from getting confused.
And, remember OSHA. They regulate the indoor air and they impose hefty fines for high CO levels in the workplace. Keeping OSHA’s Industrial Hygienists satisfied at your customer’s locations will earn your company a lot more dollars than are available doing warranty work.
In summary, use a four of five-gas analyzer in the shop if you have to for warranty work, and a single gas CO analyzer in your vans for all other emission testing and tune-ups.
Q. My trucks are running well. Why do I need a CO
analyzer?
A. If running well means smoothly and with power,
your trucks may still be wasting fuel because their carburetors are set too rich.
A fleet of ten trucks running on three shifts can easily waste
$15,000 to $48,000 of propane per year. By setting CO at 0.5% at
idle and full load, the engine still runs smoothly and with power
while saving major fuel dollars.
Q. What does OSHA use for industrial lift truck
emissions testing?
A. The states of Connecticut, Michigan, Minnesota and Washington all use the Blanke Industries CO Series 2500. OSHA’s Cincinnati
Technical Center also have CO Series 2500 analyzers available on
loan to the Federal OSHA offices nationwide. OSHA uses two types of
CO analyzers:
- those that measure CO in parts per million in
air and
- those that measure raw exhaust in percent.
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Frequently Asked
Questions – Motorcycle Tuning
Q. How can your CO analyzer help me?
A. It will help you in two ways.
- For a road hesitation or stumble, it will help
you save time by showing you quickly if the pilot jet is too big or
too small. Half the time you change one, you have gone the wrong way,
meaning another test ride and another jet size is required.
- It will assist you in obtaining maximum power from all engines.
An engine running too lean is leaving about 8% of it is available
horsepower trapped because it is starving for fuel.
Q. What should I see for CO from an engine?
A. New engines with the latest emission control
levels will produce a CO level of about 0.5% in all operating modes
including:
idle, cruise and full throttle. They need to run very lean to pass
EPA’s emission standards. However, at 3% CO in all modes of idle,
maximum horsepower can be obtained. As stated above, this will be
about an 8% gain over the EPA mandated levels.
Q. Do I need a dynamometer to obtain maximum
horsepower?
A. No, the dynamometer only indicates the
horsepower. Most use a roll-on method of from 30 mph to 80 mph. With
proper timing and the fuel system delivering enough fuel so CO is
close to 3%, the engine is at maximum horsepower.
Q. How do I set the fuel mix properly?
A. Blanke Industries recommends a road test where
the problems can be found and the exhaust CO recorded. This record
gives you a Flow Print of the carburetor showing fuel flow through
various operating modes. If CO is low, the fuel system is too lean.
If CO is high, the fuel system is too rich. With experience, you will
be able to tell how far to go with jetting or with the new fuel
controls used on fuel injected bikes.
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Frequently Asked Questions - OSHA
Q. How will OSHA measure the air in my
building?
A. The inspector will usually start an inspection
where he or she feels carbon monoxide will be the highest and do a
simple spot check. If the level is above 50 PPM at this spot, the
inspector will consider installing an 8 hour testing device which
samples the air and establishes an average carbon monoxide level
during that time.
Q. What carbon monoxide level is acceptable?
A. The Federally accepted level is an average of
50 PPM over an 8 hour period. However, the Federal law permits the
States to set even more stringent levels, usually 35 PPM. So you
will need to check with your local OSHA branch to verify what is
acceptable at your location.
Q. Some OSHA inspectors stand behind an
industrial lift truck and sniff with a PPM carbon monoxide analyzer.
Is this an accurate technique?
A. No, the PPM analyzers usually measure up to
2,000 PPM carbon monoxide. At the tailpipe of a properly adjusted
industrial truck the levels are 5,000 PPM. The analyzer cannot read
high enough to get meaningful numbers. Also, any cross draft from
air movement will blow the exhaust plume away from the analyzer. So,
this approach in not only useless, but is dangerous as a high carbon
monoxide emitter could appear to be running clean.
Q. OSHA measurers in PPM, what is that in
percent?
A. 10% is 100,000 PPM,
1% is 10,000 PPM,
0.5% is 5,000 PPM,
0.1% is 1000 PPM and
0.01% is 100 PPM.
Q. Is the Blanke Industries Series 100 CO
Tracker approved by OSHA?
A. OSHA does not approve, nor recommend carbon
monoxide analyzers. Our analyzer measures with a similar sensor,
performs spot
checks and provides 8 hour average readings. The readings from the Blanke
Industries CO
Tracker will be very close to if not the same as an OSHA
analyzer.
Q. Has OSHA recently changed how it works with
American industry?
A. Originally, OSHA was responsible for
policing American Industry. Recently, OSHA has modified their
approach and now helps businesses find solutions. The
Consulting, Education and Training (CET) arm of OSHA will audit a
facility, test and isolate poorly tuned industrial lift trucks.
Information learned through this group will not be forwarded to the
enforcement arm of OSHA unless the factory refuses to solve the
problem the CET group locates. This is a valuable service and is
currently under used by American industry.
Q. What does OSHA use for industrial lift truck
emissions testing?
A. The states of Connecticut, Michigan, Minnesota and
Washington all use the Blanke Industries CO Series 2500. OSHA’s Cincinnati
Technical Center also have CO Series 2500 analyzers available on
loan to the Federal OSHA offices nationwide. OSHA uses two types of
CO analyzers:
- those that measure CO in parts per million in
air and
- those that measure raw exhaust in percent.
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