Strong SEL10 User manual

SEL10
Lamphead & Base Assembly
Operator’s Manual & Parts List
for Equipment Type MLS210
Rev. October 17, 2000
a division of Ballantyne of Omaha, Inc.
4350 McKinley Street • Omaha, Nebraska 68112 USA
Tel [phone] • Fax [phone]

Lamphead Housing
Front Cowl Assembly This Bolt Installed for
SHIPPING ONLY.
Clamping Knob,
Projection Angle
Remove Bolt after transport-
ing Lamphead. Set Projection
Angle and secure tilt angle
using Clamping Knob.
Locking Mechanism,
Horizontal Pan
Ventilation Opening
(Do Not Obstruct)
Cover Plate,
Control Panel
Yoke Assembly
Base & Power
Supply Housing
Power Input Jacks
SEL10 LAMPHEAD & BASE ASSEMBLY
Secured for Transport
Hoisting Bracket
(1 of 4)

PREFACE
The SEL10 is a 10,000 watt xenon searchlight mounted on a rotating base. The angle and
direction of light projection are independently adjustable through a 360° arc in either direction, and
lock manually in the desired position. The unit is mounted on a trailer and powered by a diesel engine-
generator unit.
Continuous high output performance is assured by means of a coated, 30 inch precision
electroformed, parabolic nickel reflector. The reflector is carefully positioned at the factory and re-
quires no operator adjustment. The light source is a 10,000 watt xenon bulb which can operate in any
position (vertical to horizontal) and maintains a constant color temperature of 5600° Kelvin. A
squirrelcage blower is mounted in the lamphead to provide continuous forced-air cooling while the
bulb is in operation. The bulb is warranted for 500 hours.
Operator controls mounted to the instrument panel include a LAMP ON/OFF switch and a
FOCUS switch. An AC motor inside the lamphead moves the bulb inside the reflector to adjust focus.
An hour meter, located adjacent to the switches, records the elapsed time of xenon bulb operation.
Direct current for the xenon bulb is derived from two high reactance xenon power supplies
mounted in the base of the unit. All models are designed for 50/60 Hertz operation, and are available
in varying AC input types, depending upon the confuguration of the main power transformer. Check
the Equipment Data Plate to determine the exact AC requirement prior to installation.
Coarse and fine taps are easily set to regulate the DC currnt to the xenon lamphead. Some
models of these power supplies have the capability of overdriving the xenon bulb; carefully check the
power requirements specified by the bulb manufacturer and do not exceed the maximum current stated.
The two power supplies, wired in parallel, produce the high open circuit ( “no load”) voltage
required for bulb ignition, and, after ignition, the filtered low voltage current to sustain operation. The
bridge rectifiers utilize silicon diodes as the power conversion elements. The diodes are mounted to
oversize heat sinks to disperse the heat generated by normal operatrion. Internally wired squirrelcage
blowers provide additional forced-air cooling of each power supply. Thermal switches act as safety
interlocks to shut down the power supplies and protect the rectifier diodes in case temperatures reach
excessive levels.
INSTALLATION
Check the equipment Data Plate and make certain that the AC source conforms to the power
requirements of the main transformer. The AC service wiring should be installed by a licensed electri-
cian in conformance to local codes. The unit must be connected to an adequate earth ground.
The AC line to the xenon power supply must include a marked line safety switch or other power
disconnect device adjacent to the unit and accessible to the operator. For operator safety, it is
necessary to turn off all power to the unit when adjusting or servicing the xenon power supply. This safety
switch or power disconnect should be tagged “OFF - UNIT UNDER REPAIR” when the power supply is
being serviced.
On trailer-mounted units, connect the (3) phase leads and the (1) ground lead from the genera-
tor unit to the color-coded power inlet jacks near the bottom of the base cabinet. Set generator output
to 208/230 V.AC, 60 Hz.
Observing all safety procedures, install a 10,000 watt xenon bulb into the lamphead. Check the
bulb manufacturer’s documentation to determine the recommended current range of the bulb. Most
10 kW xenon bulbs operate between 180 to 220 amperes DC at 45 to 55 volts DC. A new bulb is normally
first operated at “nominal” current, which is around 85% of the maximum level (190 A.). DO NOT, at any
time, exceed the maximum current level (220 A.) specified by the bulb manufacturer.
1

Remove a side panel from the base assembly to gain access to the bridge rectifier of one of the
xenon power supplies. Use either the positive (red) or negative (black) lead at the top of the rectifier heat
sink as a connection point for the clamp-on ammeter. Voltage measurements can be taken at the hex
head screws connecting the red (+) and black (-) leads to their respective heat sinks. Observe all due
safety precautions when taking voltage and current readings in a power “ON”condition.
INSTALLATION (continued)
OPERATOR’S CONTROL PANEL
Indicator Lights,
Phase Detection
Circuit Breaker, Auxilliary Power
Toggle Switch, POWER ON-OFF
Elapsed Time Meter
(HOURS)
Pushbutton Switch,
IGNITE
Toggle Switch,
FOCUS IN-OUT
2

INSTRUCTIONS FOR REMOVING AND INSTALLING A TYPE “THS” XENON BULB
IN A SEL10 FIXTURE
NOTE
FAMILIARIZE YOURSELF WITH THE LOCATION AND IDENTIFICATION
OF THE COMPONENTS OF THIS SYSTEM AND ALSO THE NORMAL
OPERATION OF THE SYSTEM BEFORE ATTEMPTING ANY ADJUSTMENT
OR SERVICE.
NOTE
COMPLETELY READ THROUGH AND HAVE A GOOD UNDERSTANDING OF THE
PROCEDURES BEFORE ATTEMPTING TO SERVICE THIS SYSTEM. FAILURE TO
DO SO MAY RESULT IN FATAL INJURY OR EQUIPMENT DAMAGE.
NOTE
THE LAMPHEAD SHOULD BE LOCKED IN THE HORIZONTAL POSITION
DURING ANY SERVICE PROCEDURES.
WARNING
DISCONNECT POWER SOURCE BEFORE SERVICING THIS EQUIPMENT.
WARNING
A PROTECTIVE JACKET, FULL FACE SHIELD, AND PROTECTIVE GLOVES MUST
BE WORN AT ALL TIMES WHEN THE LAMP HEAD IS OPENED WITH A BULB
INSTALLED OR WHEN HANDLING THE XENON BULBS. SERIOUS INJURY MAY
OCCUR IF PROPER SAFETY PRECAUTIONS ARE NOT OBSERVED.
READ ALL ENCLOSED INSTRUCTIONS AND INFORMATION SHEETS BEFORE
HANDLING THE BULB.
WARNING
NEVER OPERATE A FIXTURE WITH AN EXPOSED BULB! THERE IS AN EXTREME
DANGER OF SEVERE BURNS TO EXPOSED SKIN AND EYES FROM THE
ULTRAVIOLET LIGHT EMITTED FROM THE EXPOSED BULB. DAMAGE CAN
OCCUR IN AS LITTLE AS 30 SECONDS OF EXPOSURE. THERE IS ALSO
AN ADDITIONAL DANGER FROM FLYING QUARTZ IF AN
EXPOSED BULB EXPLODES!
EQUIPMENT REQUIRED
1. PROTECTIVE SAFETY EQUIPMENT KIT
2. 7/16" END WRENCH OR SOCKET
3. ALLEN WRENCH 5/32"
3

ASSEMBLY PROCEDURE
WARNING
DO NOT REMOVE THE PROTECTIVE COVER FROM THE BULB UNTIL INSTRUCTED TO DO SO!
WARNING
DO EXERT ANY FORCE ON THE QUARTZ PORTIONS OF THE BULB AT ANY TIME!
NOTE
IF THE FRONT BULB HOLDER HAS NOT BEEN DISASSEMBLED, SEE THE LAST STEPS IN THE APPROPRIATE
DISASSEMBLY INSTRUCTIONS.
1. UNTIE THE CORD ON THE ANODE (+) END OF THE PROTECTIVE COVER. DO NOT REMOVE THE COVER
AT THIS TIME!
2. FASTEN FRONT BULB HOLDER TO THE BULB BY PLACING THE ANODE END (LARGE ELECTRODE) OF THE
BULB IN THE BULB HOLDER AND ALIGNING THE STUD ON THE END OF THE BULB FERRULE WITH THE
CHANNEL IN THE NOSE OF THE BULB HOLDER BODY. SLIDE THE BULB COMPLETELY DOWN THE
CHANNEL AS FAR AS IT WILL GO.
DISASSEMBLY PROCEDURE
PRIOR TO BULB INSTALLATION:
1. RELEASE THE (4) FASTENERS LOCATED AT THE SMALL SIDES OF THE COWL BY PRESSING IN ON THE
FASTENERS AND PULLING FORWARD TO REMOVE THE COWLING.
2. REMOVE THE (2) BRASS BOLTS CONNECTING THE SHORT LEADS TO THE FRONT BULB HOLDER USING A
7/16" WRENCH.
3. REMOVE THE CENTER MOUNTING SCREW, WASHER, AND SPRING FROM THE SPIDER (SEE FIGURE 4,
ITEMS 2, 3, 4) USING A 5/32" ALLEN WRENCH WHILE SUPPORTING THE FRONT BULB HOLDER SO THAT IT
DOES NOT FALL WHEN THE SCREW IS REMOVED.
4. REMOVE THE BULB HOLDER FROM THE FIXTURE.
5. TO DISASSEMBLE THE FRONT BULB HOLDER, REMOVE THE (2) CLAMP RETAINING SCREWS LOCATED ON
THE SIDE OF THE LAMP SWIVEL HUB USING A 5/32" ALLEN WRENCH, AND REMOVE THE CLAMP.
4

WARNING
DO NOT APPLY ANY PRESSURE ON THE BULB WHILE REASSEMBLING THE FRONT BULB HOLDER!
3. REPLACE THE CLAMP AND REINSTALL THE (2) CLAMP RETAINING SCREWS LOCATED ON THE
SIDE OF THE BULB SWIVEL HUB USING A 5/32" ALLEN WRENCH.
4. INSTALL THE BULB INTO THE FIXTURE BY CAREFULLY INSERTING THE CATHODE END OF THE BULB
THROUGH THE OPENING IN THE REFLECTOR. DO NOT STRIKE THE SURFACE OF THE REFLECTOR.
5. INSERT THE END OF THE BULB FERRULE INTO THE OPENING IN THE BULB LAMP HOLDER RECEIVER BLOCK
AND ALIGN THE THREADS BY TURNING THE BULB COUNTERCLOCKWISE UNTIL THE BULB THREADS DROP
INTO THE RECEIVER THREADS.
CAUTION
DO NOT OVERTIGHTEN THE BULB IN THE RECEIVER BLOCK AS THIS MAY CAUSE
THE BULB TO FREEZE IN THE RECEIVER BLOCK, MAKING IT DIFFICULT TO REMOVE.
TIGHTEN THE BULB JUST ENOUGH TO APPLY SPRING PRESSURE TO THE THREADS
BUT NOT SO MUCH AS TO BOTTOM OUT THE LAMP FERRULE COMPLETELY
AGAINST THE RECEIVER BLOCK.
6. GENTLY ROTATE THE BULB CLOCKWISE UNTIL RESISTANCE IS FELT.
7. AT THIS POINT, THE BULB SHOULD BE IN CONTACT WITH THE SPRING PLUNGER ASSEMBLIES. GENTLY
TURN THE BULB AN ADDITIONAL 1/16 - 1/8 OF A TURN TO LOAD THE THREADS WITH THE SPRING
PLUNGERS.
8. SECURE THE FRONT BULB HOLDER TO THE SPIDER WITH THE SHOULDER BOLT, SPRING, AND WASHER
THAT WAS REMOVED DURING DISASSEMBLY.
9. CONNECT THE (2) SHORT LEADS FROM THE SPIDER TO THE FRONT BULB HOLDER USING THE TWO BRASS
BOLTS AND WASHERS THAT WERE REMOVED DURING DISASSEMBLY.
NOTE
ANY TYPE OF ALCOHOL IS SUITABLE FOR CLEANING THE BULB EXCEPT FOR
ALCOHOL THAT HAS BEEN DENATURED USING PETROLEUM PRODUCTS SINCE
THE DENATURING AGENT WILL LEAVE A RESIDUE ON THE QUARTZ ENVELOPE.
10. REMOVE THE PROTECTIVE COVER FROM THE BULB AND CLEAN THE QUARTZ PORTION OF THE BULB
COMPLETELY WITH ALCOHOL.
11. THE INSTALLATION IS NOW COMPLETE. REPLACE THE FRONT COWL AND TEST THE BULB.
12. LOG THE HOUR METER READING AT INSTALLATION.
13. PERFORM THE OUTPUT POWER ADJUSTMENT PROCEDURES.
14. PREFORM THE FOCUS AND X-Y PROCEDURES.
5

DISASSEMBLY PROCEDURE
IF THERE IS A LAMP IS INSTALLED IN THE FIXTURE:
1. RELEASE THE (4) FASTENERS LOCATED AT THE SMALL SIDES OF THE COWL BY PRESSING IN ON THE
FASTENERS AND PULLING FORWARD TO REMOVE THE COWLING.
CAUTION
DO NOT PLACE ANY EXCESSIVE FORCE ON THE LAMP WHILE REPLACING THE PROTECTIVE WRAPPER!
2. WRAP THE BULB SECURELY IN THE PROTECTIVE WRAPPER THAT THE BULB WAS ORIGINALLY SHIPPED
WITH.
3. REMOVE THE (2) BRASS BOLTS CONNECTING THE SHORT LEADS TO THE FRONT BULB HOLDER USING A
7/16" WRENCH.
4. REMOVE THE CENTER MOUNTING SCREW, WASHER, AND SPRING (SEE FIGURE 4, ITEMS 2, 3, 4) FROM
THE SPIDER USING A 5/32" ALLEN WRENCH WHILE SUPPORTING THE FRONT BULB HOLDER SO THAT THE
BULB DOES NOT DROP WHEN THE MOUNTING SCREW IS REMOVED.
WARNING
DO NOT EXERT EXCESSIVE FORCE ON THE BULB WHILE UNSCREWING IT FROM
THE REAR BULB HOLDER! THE BULB SHOULD RELEASE FROM THE REAR BULB
HOLDER WITH A VERY LIGHT COUNTER CLOCKWISE ROTATION. IF THIS DOES
NOT HAPPEN, SEE THE PROCEDURE FOR REMOVING A FROZEN BULB.
5. REMOVE THE BULB BY LIGHTLY PUSHING BACK ON THE BULB TO MOVE THE REAR BULB HOLDER TO ITS
REAR MOST POSITION WHILE LIGHTLY TURNING THE BULB IN A COUNTERCLOCKWISE ROTATION. THE
BULB WILL RELEASE FROM THE REAR BULB HOLDER IN APPROXIMATELY 1½COMPLETE TURNS.
6. REMOVE THE BULB WITH THE FRONT BULB HOLDER ATTACHED FROM THE FIXTURE . PLACE IT ON A
STABLE WORKING SURFACE FOR THE REMOVAL OF THE FRONT BULB HOLDER.
7. TO REMOVE THE FRONT BULB HOLDER FROM THE BULB, REMOVE THE (2) CLAMP RETAINING SCREWS
LOCATED ON THE SIDE OF THE BULB SWIVEL HUB USING A 5/32" ALLEN WRENCH AND REMOVE THE
CLAMP.
8. REMOVE THE BULB HOLDER FROM THE BULB AND PLACE THE BULB INTO ITS SHIPPING CONTAINER FOR
SAFE KEEPING. RESECURE THE PROTECTIVE WRAPPER IF NECESSARY.
REMOVING A FROZEN BULB
1. REPLACE THE FRONT BULB HOLDER RETAINING BOLT TO SUPPORT THE FRONT OF THE BULB WHILE
FREEING THE BULB FROM THE REAR BULB HOLDER.
WARNING
DO EXERT ANY FORCE ON THE QUARTZ PORTIONS OF THE BULB
WHILE ATTEMPTING TO FREE IT FROM THE REAR LAMP HOLDER!
2. REACH THROUGH THE OPENING IN THE REAR OF THE REFLECTOR AND GRASP THE BULB BY ITS REAR
FERRULE, AND WHILE LIGHTLY PUSHING THE BULB BACK INTO THE RECEIVER BLOCK ,TURN THE BULB IN
A COUNTERCLOCKWISE DIRECTION UNTIL THE BULB BEGINS TO ROTATE FREELY.
6

REMOVING A FROZEN BULB (CONTINUED)
3. ONCE THE BULB IS FREE, DO NOT REMOVE IT COMPLETELY FROM THE REAR LAMP HOLDER.
4. RETURN TO STEP 5 OF THE PRECEDING SECTION.
OUTPUT POWER ADJUSTMENT PROCEDURES
NOTE
FAMILIARIZE YOURSELF WITH THE LOCATION AND IDENTIFICATION OF THE
COMPONENTS OF THIS SYSTEM AND ALSO THE NORMAL OPERATION
OF THE SYSTEM BEFORE ATTEMPTING ANY ADJUSTMENT OR SERVICE.
NOTE
COMPLETELY READ THROUGH AND HAVE A GOOD UNDERSTANDING OF
THE PROCEDURES BEFORE ATTEMPTING TO SERVICE THIS SYSTEM.
FAILURE TO DO SO MAY RESULT IN FATAL INJURY OR EQUIPMENT DAMAGE.
WARNING
DISCONNECT POWER SOURCE BEFORE SERVICING THIS EQUIPMENT.
EQUIPMENT REQUIRED
1. SCREWDRIVER, Flat Blade, Large 3. AMMETER, DC Clamp-On
2. WRENCH, 3/8" 4. VOLT METER, AC/DC
ADJUSTMENT INSTRUCTIONS
1. Remove lower access covers from the ends of the base enclosure by removing the (6) screws
along the sides of each panel with a 3/8" wrench.
2. Note the location and settings of the power supply adjustment taps.
7

ADJUSTMENT INSTRUCTIONS (continued)
3. Ignite the xenon bulb and check the current. Allow (30) seconds for the current to stabilize and
provide an accurate reading. If the current is not within the desired range, extinguish the bulb. It will
be necessary to increase or decrease the DC output.
4. Fine adjustment of the DC current is made to the NUMBERED taps found on the upper three terminal
blocks (TB4, TB5, TB6). Fine taps are numbered 1-2-3-4, with “1”providing the lowest output, increas-
ing to “4,”yielding the highest output. A “fine”tap adjustment raises or lowers the current approxi-
mately four amperes. The three fine tap terminal blocks are interconnected by means of a three-
lead jumper wire assembly attached to like-numbered terminals.
•To increase the DC output, move the jumper wire assembly to tap the next (3) higher numbered termi-
nals, for example, move from terminals “2”to terminals “3.”ALL TAPS MUST BE ON THE SAME NUMBERED
POSITION (1-1-1, 2-2-2, 3-3-3, or 4-4-4). If the DC output is still too low when terminals “4”are intercon-
nected, see the following instructions for adjusting “coarse” taps.
•To decrease the DC output, move the jumper wire assembly to tap the next (3) lower numbered
terminals, for example, move from terminals “3”to terminals “2.”ALL TAPS MUST BE ON THE SAME
NUMBERED POSITION (1-1-1, 2-2-2, 3-3-3, or 4-4-4). If the DC output is still too high when terminals “1”are
interconnected, see the following instructions for adjusting “coarse” taps.
5. Coarse adjustment of the DC current is made to the LETTERED taps found on the lower three terminal
blocks (TB1, TB2, TB3). Coarse taps are lettered W-X-Y-Z, with “W”providing the lowest output, in-
creasing to “Z”at the highest output. The coarse tap terminals connect to contactor terminals T1, T2,
and T3. The (3) contactor leads must connect to the same lettered step (W-W-W, etc.). A “coarse”
tap adjustment raises or lowers the current approximately twelve amperes.
•To increase the coarse DC output, move each of the contactor leads to tap the next higher lettered
terminals, for example, move from terminals “W”to terminals “X.”ALL TAPS MUST BE ON THE SAME
LETTERED POSITION (W-W-W, X-X-X, Y-Y-Y, or Z-Z-Z). Place the fine tap jumper on 1-1-1. Ignite the lamp,
check the output, and increase the fine tap setting as required.
•To decrease the coarse DC output, move each of the contactor leads to tap the next lower lettered
terminals, for example, move from terminals “Y”to terminals “X.”ALL TAPS MUST BE ON THE SAME
LETTERED POSITION (W-W-W, X-X-X, Y-Y-Y, or Z-Z-Z). Place the fine tap jumper on 1-1-1. Ignite the lamp,
check the output, and increase the fine tap setting as required.
NOTE: Both power supplies should be on the same output setting, i.e.:
Power Supply “A”X-X-X, 3-3-3 (or as required)
Power Supply “B”X-X-X, 3-3-3 (or as required)
6. Set the voltmeter to DC scale and read the arc voltage. The voltage should between 45 and 55 volts
DC. If the actual measured voltage is not in this range, consult your bulb supplier immediately.
7. Inspect tap connections to verify that the terminal is clamping the copper conductor, not the
insulation. Make certain all terminal clamping screws are tight.
8. Whenever making a coarse adjustment, again check the output current and make certain the cur-
rent is within the desired range. A fine tap re-adjustment is frequently required after changing coarse
taps.
9. After prolonged operation, the light output of the xenon bulb will decrease. This is a normal factor of
bulb aging, and can be compensated by raising the DC output of the xenon power supplies. If the
bulb was first operated at “nominal”current, the power supply output can gradually be increased
to, but not in excess of, the maximum current specified by the bulb manufacturer (220 A.). Increase
the current as instructed above. Decrease the power supply output to its former “nominal”current
level upon the installation of a new replacement bulb.
8

FOCUS AND X-Y ADJUSTMENT INSTRUCTIONS
FOR SYSTEMS w/ ELECTRIC FOCUS
NOTE
FAMILIARIZE YOURSELF WITH THE LOCATION AND IDENTIFICATION OF THE
COMPONENTS OF THIS SYSTEM AND ALSO THE NORMAL OPERATION OF THE
SYSTEM BEFORE ATTEMPTING ANY ADJUSTMENT OR SERVICE.
NOTE
COMPLETELY READ THROUGH AND HAVE A GOOD UNDERSTANDING OF THE
PROCEDURES BEFORE ATTEMPTING TO SERVICE THIS SYSTEM. FAILURE TO DO
SO MAY RESULT IN FATAL INJURY OR EQUIPMENT DAMAGE.
EQUIPMENT REQUIRED
1. ALLEN WRENCH 5/32'
2. #5 WELDERS GLASSES OR VERY DARK SUNGLASSES
WARNING
THE SEL10 SYSTEMS PROJECT A VERY INTENSE BEAM OF FULL SPECTRUM LIGHT.
THE USE OF DARK GLASSES WHILE ADJUSTING THE BEAM PARAMETERS ON A
LIGHT COLORED REFLECTIVE SURFACE AT A CLOSE DISTANCE IS MANDATORY.
WARNING
NEVER LOOK DIRECTLY INTO A LIGHTED FIXTURE'S LIGHT SOURCE.
ADJUSTMENT INSTRUCTIONS
1. Loosen the positioning fasteners and point the lamphead toward a wall, ceiling, or other flat
surface at least 10 feet away.
2. Locate the focus switch located on the control panel on the back of the lamphead housing.
3. Remove the front cowl and locate the X & Y adjustment holes located on the lower small sides of
the fixture at the ends of the front spider arms.
WARNING
SEL10 SYSTEMS PROJECT A VERY INTENSE BEAM OF FULL SPECTRUM LIGHT.
CAUTION MUST BE TAKEN WHEN POINTING THE BEAM AT AN OBJECT AT A
DISTANCE OF LESS THAN 100 FEET WITH THE FOCUS SET FOR A CONVERGING
BEAM. COMBUSTIBLE OBJECTS AND OBJECTS WITH A DARK COLOR MAY UNEXPECTEDLY
IGNITE IF CARE IS NOT TAKEN IN THE FOCUSING AND POSITIONING OF THE BEAM.
4. Energize the fixture and ignite the lamp.
5. Adjust the focus by moving the focus switch up or down to produce a diverging beam pattern
with 2-3 clearly defined rings of light with or without an off center hot spot.
6. Adjust the X & Y adjustment screws using a 5/32" allen wrench to move the inner rings of light to
create concentric rings with the hot spot at the center of the light field. Turning the adjustment
screw clockwise will move the rings toward that adjustment axis and turning the screw
counterclockwise will move the rings away from that adjustment axis.
9

XENON BULB MAINTENANCE
Allow the blowers to operate for at least (15) minutes after extinguishing the arc. This measure is
required by the bulb manufacturer to comply with bulb warranty conditions.
In order to insure maximum bulb life, the following procedures should be followed every 75 - 100 hours
of operation.
BULB ROTATION
If the fixture is used in a position other than pointed within 15% of vertical, the bulb should be rotated
1/3 of a turn to insure even deposition of the vaporized tungsten generated by the arc inside the bulb.
ADJUSTMENT PROCEDURES
1. Refer to the instructions for removal and installation of the bulb noting all warnings.
2. Follow the disassembly procedure for a fixture with the bulb installed steps 1 thru 5.
3. When rotating the bulb for removal, continue LIGHTLY pressing rearward on the bulb. The threads
of the bulb will ride out of their current leads and drop into the next set of threads in the receiver
block. When this happens, you will feel the bulb drop down into the receiver block.
4. Immediately stop turning the bulb and reverse direction to screw the bulb in at the new
orientation.
5. Complete reinstalling the bulb per the bulb installation procedure.
POWER LEVEL ADJUSTMENT
Check the output power level of the system and readjust as necessary. Output may be increased to
maintain light output as the bulb ages, but output must remain below 10,000 watts (220 A.). SEE POWER
ADJUSTMENT PROCEDURES preceding.
FOCUS AND X-Y ADJUSTMENT INSTRUCTIONS (continued)
7. Readjust the focus screw to set the desired beam spread.
8. Replace the front cowl reposition the lamp head and resecure the position locking fasteners.
10

WIRING DIAGRAM
1 of 3
11

WIRING DIAGRAM
2 of 3
12

PARTS LIST, POWER SUPPLIES A & B (Diagram 1 of 2)
Ref.
Desig. Part No. Description
B1 81-33026 Blower
C1A,B 61-08027 Capacitor, 5400 µf, 200 V.
C3,4 81-08005 Capacitor, .33 µf
C5 81-08029 Capacitor,.01 µf, 600 V.
C6,7 81-08025 Capacitor, .005 µf, 800 V.
C13-18 31-08134 Capacitor, 4 µf, 370 V.AC
CR1-3 81-47004 Forward Diode, Rectifier; 100 A. 300 V.
CR4-6 81-47001 Reverse Diode, Rectifier; 100 A. 300 V.
CR7,8 81-47006 Boost Diode, 3 A. 600 V.
CR9 81-17002 Zener Diode, 36 V. 5 W. (1N5365B)
F1-3 31-21038 Fuse, 30 A. 250 V.
K1 81-14001 Contactor
K2 81-45016 Relay, 120 V.AC Coil
R1 81-46026 Resistor, 100 Ohm, 100 W.
R2 92-70026 Nichrome Resistor
R4,5 81-46006 Bleeder Resistor, 2500 Ohm, 10 W.
T1 1249314-3 Power Transformer
TS1 81-61010 Thermal Switch, Open at 210°F.
PARTS LIST, CONTROL PANEL & LAMPHEAD (Diagram 2 of 2)
Ref.
Desig. Part No. Description
B1 32-70228 Squirrelcage Blower, 230 V.AC, 50/60 Hz.
C8 31-08009 Capacitor, .0047 µf
C9 31-08012 Capacitor, 2400 pf, 20 kV.
C10 79127000 Capacitor, .01 µf, 500 V.
C11 31-08011 Capacitor, .47 µf
C12 31-08134 Capacitor, 4 µf, 370 V.AC
CB1 32-61015 Circuit Breaker
DS1 31-30240 Xenon Bulb, 10 kW
E1 31-61009 Spark Plug (Air Gap)
F4-6 21-21002 Fuse, Type 3AG, 5 A.
L1-3 32-30076 Indicator Light
L4 31-71042 Choke, 16 AWG Magnet Wire
M1 32-70328 Bulb Focus Motor, 115 V.AC, 50/60 Hz. (with R1)
R1 11-46110 Resistor, 100 Ohm, 50 W. (incl. with M1)
PCB 40913000 Igniter Printed Circuit Board Assembly (see Diagram 3 of 3)
S1 31-61048 Switch
S2 31-61011 Pushbutton Switch
S3 31-61049 Switch
S4 31-61078 Pressure Switch
S5 31-61134 Thermal Switch, Open at 325°F.
T2 31-64004 Transformer, High Voltage
T3 32-50230 Transformer, RF
TT 31-32004 Elapsed Time Meter
13

14
WIRING DIAGRAM
3 of 3
Igniter Printed Circuit Board Assembly
Ref. Desig. Part No. Description
C201 88263 Capacitor, .05 µf, 600 WVDC C202 79127 Capacitor, .01 µf, 600 WVDC C203 39156 Capacitor, 15 µf, 30/35 WVDC C204 88249 Capacitor, .1 µf, 600 WVDC CR201 85112 Diode, 2.5 A. 1000 PRV CR202 85112 Diode, 2.5 A. 1000 PRV CR203 85112 Diode, 2.5 A. 1000 PRV K201 39154 Relay, P&B R10-E1-W2S800 - 39160 Relay Socket - 39161 Relay Hold-Down Spring
Ref.
Desig. Part No. Description
R201 39157 Resistor, 1k Ohm, 12 Watt R202 39158 Resistor, 100k Ohm, ½Watt R203 39159 Resistor, 200k Ohm, ½Watt U201 72185 Timer IC, Motorola MC11455P1 - 39164 IC Socket, (6) Pin VR201 39211 Zener Diode, 1N5377A VR202 39162 Zener Diode, 1N4742 - 39145 PC Board (less Components) * 40913 PCB Assembly, Complete

POWER SUPPLY MAINTENANCE
VERY LITTLE MAINTENANCE is required to keep this power supply in good operating condition. Like
most lighting equipment, cleaning is the most important element.
WARNING
Turn off ALL primary AC power before
making any adjustments or performing serv-
ice procedures. Allow several minutes for
the capacitors to drain stored energy.
Allow the power supply to cool to room
temperature.
1. Remove all accumulated dust and dirt from the rectifier. Vacuum the heat sinks. Make
certain all air inlets and outlets are unobstructed.
2. Check all electrical connections for tightness. Clean, retighten, or replace any discolored
connections or terminals.
3. Apply a drop or two of SAE 20-weight oil to the squirrelcage blower motor bearings.
POWER SUPPLY TROUBLESHOOTING
WARNING: Exercise extreme caution when
taking voltage measurements in a power
“ON”condition. Allow the capacitors (2)
minutes to discharge.
POWER LINE PROBLEMS
PRIMARY POWER (AC source) problems are most commonly (a) complete loss of AC power, or (b)
phase loss, in which one phase loses power.
a) Check line safety switch (“ON”). Check fuses or breakers insupply line. Using an AC voltmeter,
measure input power at contactor terminals L1, L2, L3.
b) When power is lost on one phase, the current ripple will increase and trip the AC line circuit
breaker (where supplied). To detect a lost phase, measure the AC voltage phase-to-phase at
contactor input terminals L1, L2, and L3.
PROBLEMS of this nature, once detected, are generally corrected at the power source, or in the
generator unit.
BOOST CIRCUIT PROBLEMS
THE BOOST CIRCUIT generates the high open circuit (“no load”) DC voltage which, in conjunction
with the igniter pulse, will ignite the xenon bulb. The open circuit voltage should measure at least
110 V.DC.
A TERTIARY WINDING on the main transformer (T1) supplies the source for the Boost Circuit. Three wires
derive from the T1 transformer; two are single conductors, and the third is a soldered pair. The Boost
Circuit should be connected only to the (2) single conductors. Filter capacitors C1A & C1B store
energy and also contribute to bulb ignition.
CONTROL CIRCUITRY
THE MAIN POWER TRANSFORMER is energized by contactor K1, which is pulled by manual
actuation of the lamphead “ON”switch. All lamphouse interlock switches (air pressure & thermal
overload) must also be closed to complete the contactor circuit.
15

CONTROL CIRCUITRY (continued)
ANY INTERRUPTION of the control circuit will disable K1 and open the AC circuit to the rectifier. In
addition to the above lamphead interlock switches, thermal switch TS1, mounted to the rectifier heat
sink, will open and disable K1 if the temperature at the heat sinks exceeds 190°F. (88°C.). The TS1
switch will automatically re-set when temperatures fall to safe levels.
POWER CONVERSION PROBLEMS
RECTIFICATION (AC to DC) is performed by bridge diodes CR1 - CR6. CR1, CR2, and CR3 are forward
diodes, and CR4, CR5, and CR6 are reverse diodes. The two types are
not interchangeable.
AN OPEN DIODE will cause a pronounced flicker in the light output. Two or more open diodes will
disable bulb ignition. A shorted diode will trip the circuit breaker protecting the AC input line. See the
following DIODE TESTING & REPLACEMENT section.
BANKED CAN CAPACITORS C1A & C1B filter the rectified DC output. C1A and C1B capacitors also
store energy to contribute to the open circuit ignition discharge. A shorted capacitor can trip the
AC circuit breaker.
RELAY K2, in the presence of high DC open circuit voltage, will pull and place Resistor R2 in
series with Capacitors C1 and C2. This resistor limits the inrush surge and prolongs the discharge of
C1A & C1B to promote bulb ignition. If K2 relay fails, ignition may become erratic, and R2 may remain
in circuit. With R2 in circuit, ripple will increase to a level noticeable in light output, but not necessar-
ily enough to trip the AC line circuit breaker.
DIODE TESTING & REPLACEMENT
1. Disconnect the diode from its circuit. Inspect for discoloration, oxidation, or loose crimp at lead
junction.
2. A “shorted”diode will show low resistance in both directions. An “open”diode will have infinite
resistance in both directions. An Ohmmeter test is required.
3. a) Analog VOM: Select R x 1 Ohm scale. With meter leads connected in one direction, the
reading should be zero (or nearly so); reversing the meter leads should show very high resis-
tance. If the diode does not exhibit these characteristics, replace it. NOTE DIODE TYPE: forward
or reverse.
b) Digital VOM: Select “Diode Test.”With meter leads connected in one direction, the reading
should be “OL”(overload); reversing the meter leads should display approximately .4 volt.
If the diode does not exhibit these characteristics, replace it. NOTE DIODE TYPE: forward or reverse.
4. Carefully clean the area of the heat sink in which the diode mounts. Apply heat sink compound
(Radio Shack #276-1373 or equivalent) using a wood or plastic spatula or stick. A thin layer is
adequate.
WARNING
HEAT SINK COMPOUND IS HIGHLY CAUSTIC.
Do not apply with fingers; keep away from
eyes. Carefully follow ALL the instructions
printed on the package.
5. Install the new diode and tighten securely for maximum mechanical contact and electrical con-
duction. Clean and firmly secure the lead terminal to the buss.
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POWER SUPPLY TROUBLESHOOTING
Contactor does not energize (no audible “click”).
1. Line safety switch open. Turn “ON.”
2. Circuit breaker or fuse in AC line open. Check AC source.
3. Faulty contactor coil or loose connection at coil terminals. Repair or replace.
Contactor pulls but lamphouse igniter does not fire.
1. Faulty contactor contacts. With coil energized, check for continuity across the contacts from the
“L”side to the “T”side; repair or replace if defective.
2. Insufficient DC output. See INSTALLATION section; increase taps as required.
3. Faulty igniter.
4. Low open circuit voltage (less than 110 V.DC).
a) Check ceramic resistor R1; should be in circuit and measure 100 Ohms.
b) Check boost diodes CR7 and CR8. See preceding DIODE TESTING section.
c) Check filter capacitors C1A and C1B. Replace if defective.
5. Defective igniter printed circuit board assembly. Press STRIKE switch to override; do not hold STRIKE
switch longer thatn
one second to prevent damage to high voltage transformer.
Bulb requires multiple ignition pulses to light.
1. Insufficient DC output. See INSTALLATION section; set taps as required.
2. Faulty K2 relay. Replace if defective.
3. Faulty or expired xenon bulb. Check for darkened envelope, worn electrodes; replace if re-
quired.
4. One or more faulty bridge diodes. See preceding DIODE TESTING section.
Bulb goes out during operation.
1. Excessive heat at rectifier heat sinks; thermal switch TS1 opening. Check for free air flow, blower(s)
operating at full speed. Check for loose connection.
2. Open lamphead thermal interlock switch.
Excessive flicker in light output.
1. Improper tap setting. All taps must be on same numbered or lettered step.
2. Faulty bridge diode. See preceding DIODE TESTING section.
3. Faulty xenon bulb. Check for cracked or sagging electrode(s).
4. Open filter capacitor C1A or C1B. Replace if defective.
Bridge diodes (CR1-6) fail repeatedly.
1. Insufficient air flow; defective blower. Clean, repair, or replace as required.
2. Incorrect replacement diode. Use only the specified rated diode(s).
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LAMPHEAD MAINTENANCE
The SEL10 lamphead requires very little maintenance to keep it in good working order. Cleanli-
ness is the most important element.
The reflector should be cleaned periodically with a soft, clean, lint free cloth to remove any
dust from the reflecting surface. If excessively soiled, use of a mild commercial glass cleaner (Windex®
or equivalent) is acceptable; USE NO ABRASIVE CLEANERS.
The xenon bulb should be checked occasionally for the presence of foreign material on the
envelope. Any dirt or other foreign material should be removed promptly. Use only alcohol and a
clean cloth to clean the bulb; rinse with distilled water and dry carefully. DO NOT touch the bulb with
bare fingers, and observe all safety procedures when working around the bulb.
The inside of the lamphead and the impeller blades of the blower should be cleaned periodi-
cally, depending on the dust conditions at each installation.
The xenon lamphead does not require any lubrication other than at the blower. This should be
lubricated with two or three drops of non-detergent motor oil every four to six months. The oil holes are
on top of the motor.
Check all electrical connections periodically for tightness, especially the DC leads at the xenon
bulb and igniter.
Follow the recommendations of the xenon bulb manufacturer regarding periodic bulb rotation.
It is a general practice to rotate the bulb 180°at 50% of warranty life. After rotating a bulb, increase
current to the maximum allowable level, and operate the bulb at this level for 10 to 12 hours. This
period will re-excite the thorium in the cathode tip and allow the new arc pattern to establish. After
the 10 or 12 hours, return the current setting to its previous level.
Always allow the lamphead blower to operate for at least ten minutes after extinguishing the
bulb. Failure to do so will shorten bulb life.
LAMPHEAD TROUBLE CHART
ALLOW THE LAMPHEAD to cool, with all blowers operating, for at least (20) minutes before opening.
Normal Operation:
The lamphead blower will start when the generator first supplies power to the SEL10. When the
control panel SYSTEM switch S1 is in the “ON”position, the elapsed time meter will operate, the power
supply blowers will start, and the AC circuit (5 - 6) to the xenon power supply will energize the circuitry
necessary to supply DC voltage to the igniter and bulb.
The DC open circuit (“no load”) voltage will be detected by the igniter printed circuit board,
which in turn will close the circuit to the igniter. There will be an audible high voltage arc ping at the
spark gap in the igniter and at the xenon bulb. The bulb should ignite immediately after one or two of
these high voltage pulses, and the lamp current will adjust to the sustaining level set at the xenon
power supply. The STRIKE switch may be pressed to override a defective igniter PC board.
Troubleshooting:
If the xenon bulb does not ignite, observe the following operational sequences for assistance in
locating and isolating the trouble area.
When the three phase indicator lights are “ON,”the AC circuit in the power supply is trouble
free up to the terminal block (L1, L2, L3) in the power supply. Check the 230 V.AC control circuit at the
blower leads at terminals #2 and #3.
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