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last
update:
July
20, 2009
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INSTALLATION
& COOLING REQUIREMENTS
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Service
Bulletin: PL-3
Date of Issue: 09/30/08
Subject: Installation & Cooling
Requirements
Models Affected: 6-cylinder Dual Plasma I, II, II+ and III CD
Ignition systems
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Plasma CDI Module Placement
The LSE Plasma CDI is a sophisticated and powerful ignition
system. It must be mounted in a
cool and dry location of the cockpit.
Cooling Requirements
The
most important contribution to improved reliability of today’s
electronics equipment is to limit the maximum operating temperature of
each unit.
A
small amount of air from an avionics fan must be provided to the vent
port of 6-cylinder systems to assure reliable operation at elevated
cockpit temperatures.
If your
6-cylinder Plasma CDI does not have a vent port, contact Light Speed
Engineering for this upgrade.
Active
cooling is not required on 4-cylinder systems.
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ELECTRICAL
REQUIREMENTS
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Service
Bulletin: PL-2
Date of Issue: 06/24/06
Subject: Electrical System Requirements
and Operation
Models Affected: All Plasma CD Ignition systems
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Electrical System Requirements
All Plasma CDI systems can be used with
12 or 24 volt electrical systems.
Input voltages above 35 volts or reversed polarity can cause system
damage.
For this reason it is mandatory that
all aircraft using Plasma CD Ignitions are equipped with over-voltage
protection in their alternator charging system(s). Over-voltage protection is a
requirement for certified aircraft.
Power connection must be directly to the battery terminals to
avoid voltage spikes and electrical noise. Aluminum should never be used as an
electrical conductor for the Plasma CDI.
Use only the supplied aircraft quality stranded wire.
Minimum supply voltage for starting is
6.5 Volts.
Minimum operating voltage is 5.5 Volts.
Electrical Operating Instructions
No operational limits or special
procedures are necessary during normal use. You can either hand start your engine
or use your electrical starter.
All Plasma CDI systems retard timing to TDC during start and
advance timing optimally for all flight conditions based on manifold
pressure and rpm.
- In case of a charging system failure, it is recommended
that you land at the nearest safe airport and repair the charging
system before further flight.
- If you are using Dual Plasma CD Ignition, you can turn
one system off, together with all other electrical loads not essential
for flight, to maximize your range with your remaining battery
capacity.
- Dual Systems only: If you have installed an aux battery
per the LSE supplied drawing, monitor your voltmeter and do not
switch to the aux battery until the supply voltage of the main
battery is below 6.5 Volts or the engine is not running
smoothly. After switching to
the aux battery, your voltmeter will read the voltage remaining in
your aux battery.
- Do not switch your main alternator breaker in flight to
avoid potentially damaging voltage spikes. This does not apply to the
alternator field breaker.
This information should be contained in
the Aircraft Operating Manual.
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MISFIRE
DURING START
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Service
Bulletin: PL-1B
Date of Issue: 12/28/06 Supercedes SB: PL-1,
1/2005, Kickbacks
Subject: Misfire During Start
Models Affected: All Plasma CD Ignition systems prior to 12/2004
Models Not Affected: Plasma II+ systems version
"PMS"
Plasma III systems version "U3+","A","A1",
or "B"
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Plasma
CDI systems shipped after December of 2004, have shown no tendency to
misfire or cause a kickback during start. This includes the current
Plasma III versions "A" and "A1" and the current
Plasma II Plus version "PMS".
On
earlier Plasma CDI systems version "U3" or "U3+",
misfiring is completely avoided if the key switch is paused for 1 second
in the "Both" position before engaging the starter.
Toggle switch operated systems have no tendency to misfire, (the issue
was triggered by the rapid "on" / "off" /
"on" sequence of the key switch motion).
All
other systems can be modified to eliminate any possibility of
misfiring. Contact LSE for further details. Unmodified
systems shipped before 12/04, can misfire if the supply voltage drops
below 8.5 volts repeatedly during cranking. This can only
occur if the starter draws excessive current and the battery is
not sized for that current requirement.
If
you are using a small battery, we recommend using a wound field starter,
as they draw less than 1/2 the current of a permanent magnet starter.
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MAP
LINE REPLACEMENT
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Service
Advisory: CA-2
Date of Issue: 10/30/19
Subject: MAP Line Replacement
Models Affected: All Plasma CDI
The yellow tygon
tubing MAP line should be replaced after 10 years of service for best
reliability. It can also be replaced with 1/8 id norprene
vacuum line.
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INSPECTION
– TIMING ADVANCE
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Service
Advisory: PL-6
Date of Issue: 10/30/19
Subject: Inspection
Models Affected: All Plasma CDI Systems
Verify timing advance
is operating normally. Use a mV
meter/ display or a strobe light or the procedure outlined in the Plasma
CDI Manual. Inspect every annual.
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INSPECTION
– TRIGGER SYSTEM ON CONTINENTAL 6-CYL AND FRANKLIN ENGINES
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Service
Advisory: PL-5
Date of Issue: 10/30/19
Subject: Inspection
Models Affected: Continental 6-cylinder and Franklin Engines. All
Plasma CDI Engines.
On Continental
6-cyl. and Franklin engines, inspect the aluminum magnet ring/ magnet
holder. Check the tightness of the 6 countersunk screws (Mini
Sensor systems) and inspect the 3 stainless mounting tabs holding the
magnet ring / trigger magnet holder (Direct Crank Sensor systems) for
cracks.
Inspect
every annual / 100 hr.
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LONG
TERM RELIABILITY
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Service
Advisory: PL-4
Date of Issue: 10/30/17
Subject: Reliability
Models Affected: All Plasma III version “A”
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Produced
November 2005 (SN: 42762) – May 2006 (SN: 42907).
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Plasma
III versions "A" produced between November 2005 and May 2006
should be returned for upgrades to improve reliability.
Version
"A1" is not affected.
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CABLE
UPGRADE
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Service
Advisory: CA-1
Date of Issue: 10/30/17
Subject: Primary Cable Upgrade
Models Affected: All Plasma CDI Prior to 2003
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Early
Plasma I systems were shipped with RG-58 coaxial cables for primary
ignition leads to connect the Plasma CDI to the coils.
These
cables should be updated to the current standard issue RG 400 cables
for best reliability.
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HALL
EFFECT MODULE INSTALLATION
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Service
Advisory: HM-1
Date of Issue: 10/30/17
Subject: Torque MS Nut
Models Affected: All Hall Effect Modules at time of service
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Use 25
- 35 ft/lb torque for the MS nut attaching the non-impulse mag drive
gear to the shaft.
This
should be done on initial installation and whenever the gear is
removed.
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Copyright ©2000 by LIGHT SPEED
ENGINEERING, LLC. 416 E. Santa Maria St., Hangar-15, Santa Paula, CA
93060 U.S.A.
Mail Address: P.O. Box 549 Santa Paula, CA 93061 U.S.A.
Tel: 805-933-3299
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Tackabury
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