Oriel 66 Series User manual
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SM
View
Instra
CJRIEL
CORPORATION
250.
Long Beach Boulevard
Stratford, CT 06497-0872
Phone: (203) 377-8282
Fax: (203) 378-2457
UNIVERSAL ARC LAMP HOUSING
MODELS 66000 THROUGH 66005
66010 THROUGH 66013
66028 AND 66046
Please read these instructions completely before
operating this equipment.
If there are any questions
or
problems regarding
the use of this equipment, please contact:
ORIEL CORPORATION
ORIEL S.A.R.L.
9 Avenue De Laponie
Z.A. De Courtaboeuf
91951 Les Ulis Cedex
France
Phone: 01-69-07-20-20
Fax: 01-69-07-23-57
-or -
-or -
ORIEL SCIENTIFIC, LTD.
1 Mole Business Park
P.O. Box
31
Leatherhead
Surrey KT22 7AU
England
Phone: 0372-378822
Fax: 0372-375-353
The representative from whom this equipment was purchased.
66000-M
10/12/90
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TABLE
OF
CONTENTS
'INTROqUCTION .................................................................................. 3
II
SAFETY CONSiDERATIONS............................................................... 5
11.1
RADIATION............................................................................... 5
11.2
LAMP EXPLOSION....................................................................5
11.3
OZONE ..................................................................................... 6
11.4
ELECTRICALSHOCK.............................................................. 6
11.5
EMI
............................................................................................ 7
11.6·
HEAT
...............................................................,.......................... 7
III
GENERAL DESCRIPTION ................................................................... 8
111.1
LAMP'
AND REFLECTOR ADJUSTMENTS ............................. 8
111.2
BUILT-IN IGNITOR.................................................................... 8
111.3
LAMP COOLING....................................................................... 8
111.4
SAFETY AND MONITORING FEATURES............................... 9
111.5
ELAPSED TIME INDICATOR .................................................. 9
111.6
HOUSINGS WITHOUT CONDENSING LENSES.................... 9
111.7
MOUNTING............................................................................... 9
IV
LAMP INSTALLATION AND INITIALOPERATION ............................
13
IV.1
ADJUSTMENT OF
LAMP.
MIRROR AND LENS....................
17
IV.2
COOLING................................................................................
20
V LAMP HOUSING OPTICS..................................................................
23
V.1
COLLIMATED BEAMS............................................................ 24
V.2
UNIFORMITy..........................................................................
25
V.3
IMAGING THE ARC................................................................
26
V.4
REAL LENS.............................................................................
27
V.5
HOW
DO
YOU
POSITION THE CONDENSER
TO
GET ACOLLIMATED BEAM?.................................................
30
VI
CIRCUIT DESCRIPTION....................................................................
31
VI.1
IGNITION CIRCUIT ................................................................
31
VI.2 COOLING
FAN
CONTROL CIRCUIT.....................................
31
VI.3 ELAPSED TIME INDICATOR DRIVE CIRCUIT.....................
32
VI.4 INTERLOCK CIRCUIT........................................................:...
32
VII
TROUBLESHOOTING........................................................................
33
VI1.1
INTRODUCTION ....................................................................
33
VII.2 PROBLEMS ............................................................................
33
WARRANTY
RETURNS
DRAWINGS
SCHEMATICS
PARTS
LISTS
2
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I
INTRODUCTION
66000-M
UNIVERSAL
ARC
LAMP
HOUSING
This
manual
covers
the
Oriel
50
to
500
watt
(W)
Universal
Lamp
Housings
with
inter-
nal
ignitors.
We
divide
them
into
two
categories:
housings
for
50
to
250
W
short
arc
lamps,
and
housings
for
200
to
500
W
lamps.
50
to
250
W
Lamp
Housings:
66000
Lamp
Housing
with
no
condenser
66001
Lamp
Housing
with
F/1.5
condenser
66002
Lamp
Housing
with
FI1
condenser
66003
Lamp
Housing
with
F/0.85
condenser
66004
Lamp
Housing
with
F/0.7
glasslfused
silica
condenser
66005
Lamp
Housing
with
F/0.7
fused
silica
condenser
200
to
500
W
Lamp
Housings:
66010
Lamp
Housing
with
no
condenser
66028
Lamp
Housing
with
F/1.5
condenser
66011
Lamp
Housing
with
FI1
condenser
66046
Lamp
Housing
with
F/0.85
condenser
66012
Lamp
Housing
with
F/0.7glass/fused
silica
condenser
66013
Lamp
Housing
with
F/0.7
fused
silica
condenser
The
housings
have
the
same
basic
design
and
differ
in
the
condensing
lens
assembly
and
fan.
With
the
appropriate
socket
adapter
you
can
Interchange
between
Hg,
Xe,
and
Hg(Xe)
lamps
of
different
power.
An
ignitor
is
built
into
the
top
of
the
lamp
hous-
ing.
This
reduces
RF
interference,
and
eliminates
the
need
for
a
stand
alone
ignitor.
These
lamp
housings
are
designed
to
operate
with
Oriel
Power
Supplies.
Table
1
on
the
following
page
shows
the
appropriate
socket
adapter
for
each
lamp,
and
the
power
supply
you
should
use.
3
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66000-M
UNIVERSAL
ARC
LAMP
HOUSING
Table 1Appropriate Socket Adapters and Power Supplies for Oriel Lamp Housings
Lamp Power Supply
Lamp' Model Socket Model
Housing Type
No.
Adapter Type
No.
50to
250
W
75WXe
6251
66150
50-200
W
Universal
68805
75WXeOF
6263
66150
50-200
W
Universal
68805
150
W
Xe
6253
66151
50-200
W
Universal
68805
150W
Xe
UV
6254
66151
50-200
W
Universal
68805
150WXe
OF
6255
66151
50-200
W
Universal
68805
150
WXe
6256
66152
50-200
W
Universal
68805
50WHg
6282
66158
50-200
W
Universal
68805
100W
Hg
6281
66150
50-200
W
Universal
68805
200WHg
6283
66153
50-200
W
Universal
68805
200
W
Hg(Xe)
6291
66152
50-200
W
Universal
68805
200
W
Hg(Xe)
OF
6292
66152
50-200
W
Universal
68805
200
to
500
W 200WHg
6283
66144
50-200
W
Universal
68805
200-500
W
Hg
68810
350W
Hg
6286
66161
200-500
W
Hg
68810
500WHg
6285
66162
200-500
W
Hg
68810
300
WXe
6259
66160
200-500
W
Xe
68811
300WXeOF
6258
66160
200-500
W
Xe
68811
400
WXe
6260
Not
Required
200-500
W
Xe
68811
200
W
Hg(Xe)
6291
66157
50-200
W
Universal
68805
200-500
W
Xe
68811
200
W
Hg(Xe)
OF
6292
66157
50-200
W
Universal
68805
200-500
W
Xe
I
68811
500
WHg(Xe)
66142 66159
200-500
W
Xe
68811
4
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SAFETY CONSIDERATIONS
Summary
of
Hazards
II
66000·M
UNIVERSALARC LAMP HOUSING
There
are
six
hazards
in
the
operation
of
systems
employing
these
lamp
housings.
They
are:
Radiation
Lamp
Explosion
Ozone
Electrical
Shock
EMI
Heat
The
interlock
system
is
designed
for
your
safety.
Do
not
defeat
the
interlocks.
II.1
RADIATION
The
high
Intensity
UV
radiation
of
these
lamps
can
permanently
damage
the
cornea,
lens,
and
retina
of
the
eye,
even
causing
blindness.
This
damage
may
not
be
Imme-
diately
apparent.
The
deep
UV
is
absorbed
in
the
cornea
or
eye
fluids;
focused
UV,
VIS
and
NIR
can
damage
the
retina.
Normal
blink
reaction
to
visible
light
may
not
be
adequate
protection,
and
a
beam
of
invisible
UV
or
NIR
(produced
by
spectral
filter-
ing)
can
be
most
dangerous
as
the
blink
response
is
not
Induced.
UV
radiation
can
also
cause
painful
sunburn,
and
with
prolonged
exposure,
serious
burns.
Recommendations:
1
Never
look
directly
into
the
output
beam
of
a
housing
when
operating
a
lamp.
2 Never
look
at
a
specular
(mirror)
reflection
of
the
beam,
even
for
short
periods
of
time.
3
Use
the
interlock
system
to
prevent
access
to
a
working
lamp.
4
Always
wear
UV
safety
eyewear
or
facemask,
and
protective
clothing
for
exposed
areas
of
skin.
II.2
LAMP
EXPLOSION
When
cold,
xenon
and
mercury(xenon)
arc
lamps
are
under
several
atmospheres
of
pressure
and
are
subject
to
explosion
due
to
internal
strains
or
to
physical
abuse.
When
hot,
all
lamps
are
under
a
pressure
of
close
to
100
atmospheres
and
subject
to
violent
explosion.
5
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Recommendations:
66000-M
UNIVERSAL ARC LAMP
HOUSING
1
Do
not
handle
a
bare
arc
lamp
without
safety
goggles
and
adequate
protection
for
exposed
areas
of
skin.
2
Do
not
apply
torque
to
the
lamp
envelope
during
installation
or
removal.
3
Do
not
touch
the
lamp
envelope.
Fingerprints
and
other
contaminations
left
on
.
the
lamp
cause
a
deterioration
of
the
envelope
during
operation
and
may
lead
to
lamp
explosion.
4
Thoroughly
clean
the
envelope
with
alcohol
or
a
dilute
solution
of
detergent
and
water
after
Installation
in
the
housing.
5
.Cover
the
aperture
of
the
housings
without
condensers,
before
operation.
II.3 OZONE
Shortwave
ultraviolet light
photolyzes
oxygen
to
produce
ozone.
This
is
emitted
in
the
cooling
air
stream
of
the
lamp
housing.There
is
no
simple
way
of
predicting
the
ozone
concentration
(or
its
Impact
on
you)
e.g.,
operation
in
a
small
enclosed
area
may
lead
to
high
concentrations.
Operation
of
the
same
system
in
a
large,
well
ventilated
laboratory
may
not
be
a
problem.
Recommended
maximum
expo-
sures
are
typically:
0.1
ppm
for
8
hours
exposure
2
ppm
for
a 2
hour
exposure
A
very
sensitive
nose
can
detect
0.015
ppm.
1
ppm
produces
a
strong
and
obnox-
Ious
odor.
As
a
rule
of
thumb,
if
you
can
easily
smell
ozone,
the
level
is
too
high
for
prolonged
exposure.
Recommendations:
1
Use
an
ozone
free
lamp
unless
you
need
the
shortwave
UV.
2
Operate
the
system
in
a
large
ventilated
area.
3
Use
an
Ozone
Eater™,
found
in
our
Volume
II
catalog.
IlA ELECTRICAL SHOCK
A
high
(>20kV)
transitory
voltage
is
used
to
ignite
the
lamp.
Lamp
current
is
up
to
22
amperes.
Additionally,
line
voltage
is
supplied
to
the
housing
to
power
the
fan
and
elapsed
timer.
This
line
voltage
will
stili
be
present
even
when
the
power
sup-
ply
is
disconnected
from
the
housing.
6
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n.s
EMI
Recommendations:
1
Keep
personnel
clear
of
all
exposed
terminals.
66000-M
UNIVERSAL
ARC
LAMP
HOUSING
2
,Before
relamping
or
working
on
the
system,
disconnect
the
Input
power
to
the
lamp
housing
from
the
line,
turn
off
the
power
supply
and
check
the
power
supply
voltmeter
for
zero
voltage
to
be
sure
that
Internal
capacitors
are
fully
discharged.
3
Make
sure
all
connections
are
securely
made
(and
check
the
polarity)
before
starting
a
lamp.
4
Do
not
handle
the
lamp
leads
during
lamp
ignition.
Ignition
of
an
arc
lamp
requires
high
voltage
high
frequency
(1
OO's
of
kHz)
pulses.
A
high
current
dump
(kHz
discharge)
follows.
Both
of
these
are
sources
of
electromagnetic
interference,
both
radiated
and
conducted.
Good
earthing
and
cable
routing
practice,
and
EMI
shielding
may
be
necessary
to
protect
sensitive
digital circuitry
from
these
pulses.
Recommendations:
1 Start
the
arc
lamp
before
powering
nearby
computer
systems.
2
Keep
the
computer
at
least
6
feet
away
from
the
Ignitor/power
supply.
3
Use
adifferent
outlet
and
line
for
the
computer
and
ignitor/power
supply.
II.6 HEAT
Arc
lamps
become
very
hot
after
only
minutes
of
operation,
and
remain
very
hot
for
up
to
10
minutes
after
being
shut
off.
Recommendations:
1
Do
not
touch
the
lamp
with
your
bare
hands
for
at
least
10
minutes
after
being
shut
off.
7
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III
GENERAL DESCRIPTION
66000·M
UNIVERSAL
ARC
LAMP HOUSING
These
lamp
housings
are
lightweight
but
rugged.
They
are
excellent
choices
for
most
low
to
medium
power
laboratory
lamps.
You
can
mount
them
to
optical
tables,
rails,
or
benches.
Various
models
with
different
condensers
are
available.
With
the
complete
line
of
optical
accessories
described
in
Volume
II,
you
can
filter,
focus,
and
steer
the
output
to
fit
your
application.
Both
types
of
lamp
housings
described
in
this
manual
(50
to
250
Wand
200
to
500
W),
use
the
same
shell.
The
200
to
500
W
models
have
a
more
powerful
fan
to
en-
sure
correct
operating
conditions
for
the
higher
wattage
lamps,
and
adifferent
mount-
Ing
block
to
accept
the
larger
lamps.
III.I
LAMP
AND
REFLECTOR
ADJUSTMENTS
The
position
of
the
arc
(relative
to
the
terminals
which
secure
the
lamp)
varies
slightly
from
lamp
to
lamp.
This
is
because
of
normal
arc
lamp
manufacturing
tol-
erances.
These
lamp
housings
have
adjustments
to
place
the
arc
of
a
new
lamp
in
the
same
position
as
that
of
the
lamp
being
replaced.
Three
fine
controls
posi-
tion
the
reflector.
Then,
Independent
tilt
controls
position
the
arc
horizontally
and
vertically.
The
reflector
and
its
controls
travel
with
the
vertical
and
horizontal
con-
trols.
This
eliminates
the
need
for
Iterative
lamp-reflector
adjustments.
See
Fig.
1
on
page
10
for
location
of
adjusters.
III.2
BUlL
T·IN IGNITOR
The
housings
described
In
this
manual
have
an
ignitor built
into
the
top
of
the
housing.
Short
arc
lamps
require
a
high
voltage
spike,
up
to
40
kV
for
xe
lamps,
to
ignite.
Having
the
ignitor built
into
the
lamp
housing
minimizes
unwanted
radi-
ated
or
conducted
RFI.
III.3
LAMP
COOLING
The
built
in
fan
and
housing
baffles
ma.intain
the
proper
operating
temperature
for
arc
lamps,
when
operated
In
normal
laboratory
ambient.
Overheating
due
to
blocking
of
the
cooling
vents
or
an
Inoperative
fan,
activates
a
thermostat
Inter-
lock.
The
cooling
fan
can
be
operated
on
110
or
220
volts
AC
line.
The
housings
have
an
AC
connector
which
is
designed
to
accept
U.S.
style
power
cords.
The
hous-
ings
are
supplied
with
a
power
cord.
If
the
power
cord
is
not
compatible
with
your
wall
socket,
replace
the
plug
at
the
end
of
the
power
cord.
Check
that
the
line
se·
lect
switch
(below
the
fan)
is
In
the
appropriate
110/220
V
position
before
plug-
ging
the
line
cord
into
the
nearest
available
AC
outlet.
.
8
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HIGH
VOLTAGE
CONNECTOR TO
BOTTOM
OF
LAMP
LAMP VERTICAL
POSITION
ADJUST
HIGH
VOLTAGE
CONNECTOR TO
TOP OF LAMP
66000-M
UNIVERSAL
ARC
LAMP
HOUSING
ELAPSED TIME
INDICATOR
J~::~fH;~==~E~::::---
REFLECTOR PINS
AND
,.I":.
ADJUST KNOBS
LAMP HORIZONTAL
__
---::::~~
POSITION ADJUST
...r=..
.......
~
__
METRIC MOUNTING INCH MOUNTING
SLOTS (4) SLOTS (4)
Fig.
1
Lamp
and
reflector adjustments.
10
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TO FAN
I'>--~r--------
INTERLOCK
66000·M
UNIVERSAL
ARC
LAMP
HOUSING
2
PIN
FEMALE CONNECTOR
CINCH
JONES/TRW
S-392-AB
AC POWER SOCKET
3
WIRE
AC
CONNECTOR 15A @
250
VAC
SWITCHCRAFT EAC-302
'----::II.c-------
HOUSING VOLTAGE
SELECT SWITCH
Fig.
2
Safety
interlock
and
electrical
sockets.
11
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66000·M
UNIVERSAL
ARC
LAMP
HOUSING
The
fan
has
a
combination
logic/thermostat
control
system.
The
fan
will
run
as
long
as
there
is
an
output
voltage
from
the
power
supply
over
5
VDC,
and
as
long
as
the
temperature
inside
the
Lamp
Housing
is
over
104
OF
(40°C).
IlIA
SAFETY
AND
MONITORING
FEATURES
These
lamp
housings
incorporate
safety
interlocks.
When
used
with
an
Oriel
Power
Supply
the
lamp
automatically
shuts
off
if
the
housing
door
is
opened
or
the
housing
overheats.
If
you
use
your
own
power
supply,
we
strongly
recom-
mend
that
you
utilize
this
low
voltage
interlock
system
for
safety.
See
Fig.
2
on
page
11
for
location
of
interlock.
III.S
ELAPSED
TIME
INDICATOR
The
Elapsed
Time
Indicator
(ETI)
Is
located
on
the
side
of
the
lamp
housing
just
above
the
removable
access
door.
It
is
powered
whenever
the
lamp
is
ignited.
The
full
scale
reading
is
2,000
hours,
with
increments
every
200
hours.
The
indicating
mechanism
is
an
air
gap
in
a
column
of
mercury,
which
moves
from
left
to
right.
The
column
of
mercury
is
enclosed
In
a
shell,
which
may
be
reo
moved
and
reversed
to
reset
the
ETI.
III.
6
HOUSINGS
WITHOUT
CONDENSING
LENSES
The
66000
and
66010
Lamp
Housings
do
not
have
a
condenser,
and
therefore
have
a
large
aperture
in
the
front
of
the
housing.
Block
this
aperture
with
your
own
condenser
or
a
plate
before
operating
the
lamp.
Ill.?
MOUNTING
The
lamp
housings
are
supplied
with
four
adjustable
feet
for
free
standing
use.
They
allow
0.63
inch
(16
mm)
height
adjustment.
You
can
also
mount
the
hous-
ing
to
tables,
carriers,
or
translators
with
tapped
holes
on
1
inch
or
25
mm
cen-
ters.
To
do
this
you
should
remove
the
feet
and
use
the
three
mounting
points
and
screw
slots.
If
you
have
a
flat
enough
surface
you
can
unscrew
the
three
mounting
pads
and
use
the
baseplate
directly.
See
Fig.
3
on
page
12
for
base-
plate
dimensions.
9
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11.0
(280)
'6.5
(165)
1.75
(44.5)
Fig.
3
Dimensional
Diagram.
66000·M
UNIVERSALARC LAMP HOUSING
~
6.5
/
~(165)
ADJUSTABLE
0.5-1.13
12
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IV
LAMP INSTALLATION AND INITIAL OPERATION
66000-M
UNIVERSAL ARC LAMP HOUSING
1
Check
that
there
is
no
electrical
service
to
the
housing
and
that
the
lamp
power
sup-
ply
is
off
and
discharged.
2
Put
on
safety
goggles
and
gloves.
3
Unscrew
the
four
thumb
screws
on
the
side
of
the
housing
and
remove
the
access
door.
4
Determine
which
orientation
is
correct
for
the
lamp.
For
xenon
and
mercury
(xenon)
lamps,
the
anode
(+
ve)
is
at
the
top.
For
mercury
lamps
the
anode
(+
ve)
must
be
at
the
bottom.
You
can
Identify
the
anode
by
a+
stamped
on
the
lamp
base.
Any
lamp
Identification
writing
or
numbers
will
be
the
correct
way
up
when
the
lamp
is
held
in
the
correct
operating
orientation.
See
Fig.
4
on
page
15
for
a
dia-
gram.
5
Install
the
appropriate
adapter(s)
on
the
lamp
terminal(s).
Depending
on
the
lamp
type,
these
socket
adapters
are
fastened
to
the
lamp
terminals
by
set
screws
or
by
a
threaded
connection.
If
the
lamp
is
supplied
with
knurled
nuts,
remove
the
bottom
nut
and
discard
before
In-
stalling
the
socket
adapter.
One
of
the
knurled
nuts
will
be
used
to
secure
the
wire
lug
to
the
top
terminal.
6
Connect
the
top
hanging
lead
to
the
top
terminal,
using
either
the
knurled
set
screw
supplied
with
the
lamp,
or
the
knurled
set
screw
supplied
witb
the
top
adapter.
7
Set
the
lamp
position
adjusters
at
approximately
mid
range.
Move
the
adjusters
while
watching
the
bottom
mounting
block
to
find
mid
range.
Place
the
bottom
terminal
(with
adapter)
into
the
bottom
mounting
block.
Adjust
the
lamp
vertically
so
the
arc
gap
lies
approximately
in
the
center
of
the
mirror,
then
tighten
the
knurled
set
screw
on
the
side
of
the
mounting
block.
S
After
the
lamp
is
in
pOSition,
clean
the
envelope
with
alcohol
and
lint
free
tissue.
Fin-
gerprints
left
on
the
lamp
may
cause
the
lamp
to
explode
when
lit.
9
Replace
the
side
access
door
and
tighten
the
four
thumb
screws.
13
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66000·M
UNIVERSAL ARC LAMP HOUSING
10
Connect
the
lamp
cables
between
the
lamp
housing
and
the
rear
of
the
power
sup-
ply.
+
ve
cable
to
"top"
for
xenon
and
mercury
xenon;
+
ve
cable
to
bottom
for
mercury
lamps.
Read
the
Power
Supply
Instruction
Manual
before
operation.
-CAUTION-
BE
SURE
THE
LAMP
IS
POSITIONED
WITH
THE
PROPER
ELECTRODE
ON
TOP
AND
THE
LEADS
ARE
CONNECTED
TO
THE
PROPER
OUTPUT
CONNECTORS
OF
THE
POWER
SUPPLY.
OPERATION
WITH
THE
WRONG
POLARITY
WILL
IMMEDIATELY
DESTROY
THE
LAMP
ELECTRODES.
It
is
important
to
re-check
the
lamp
cabling
to
the
lamp
housing.
If
you
are
operat-
ing
the
lamp
housing
for
the
first
time
or
changing
lamp
type,
DO
IT
NOW.
It
may
save
you
a
lamp.
Incorrect
connection
will
result
in
rapid
destruction
of
the
lamp.
11
Connect
the
interlock
and
ignitor
drive
cables
between
the
lamp
housing
and
the
rear
of
the
power
supply.
12
Connect
the
fan
power
cord
to
a
110
or
220
VAC
line.
Make
sure
the
line
select
switch
(located
below
the
fan)
is
in
the
appropriate
110/220
V
position
before
plugging
the
fan
in.
14
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+
TYPICAL
XENON
lAMP
ANODE
UP
UP
t
TYPICAL
MER~Y
LAMP
ANODE
DOWN
66000-M
UNIVERSAL
ARC
LAMP
HOUSING
TYPICAL
MERCURY
(XENON)
lAMP
ANODE
UP
Fig.
4 Correct operating position
of
arc
lamps.
15
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Fig.
5
Arc
lamp
inside
housing.
16
66000·M
UNIVERSAL
ARC
LAMP
HOUSING
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IV.1 ADJUSTMENT OF LAMP, MIRROR AND LENS
1
General
66000-M
UNIVERSAL
ARC
LAMP
HOUSING
In
these
housings,
the
spherical
mirror
behind
the
lamp
creates
an
inverted
arc
image
which
can
be
placed
onto
or
near
the
lamp
arc
to
increase
the
out"
put
beam
intensity.
The
condensing
lens
collects
radiation
from
both
the
arc
.
and
the
mirror
image
of
the
arc.
The
mirror
Is
adjusted
with
respect
to
the
lamp
by
three
knobs
(smaller)
located
directly
behind
the
mirror
on
the
back
of
the
housing.
The
lamp
and
mirror
in
unison
are
adjusted
by
a
vertical
and
horizontal
adjust
knob
(larger)
in
the
same
area.
See
Fig.
1
on
page
10
for
location.
-CAUTION-
DO
NOT
LET
THE
MIRROR
IMAGE
OF
THE
ARC
FALL
ONTO
EITHER
ELECTRODE.
OVERHEATING
OF
THE
LAMP
SEALS
AND
SUBSEQUENT
LAMP
EXPLOSION
MAY
RESULT.
2
Adjustments
Prior
to
Operation
-
a
Before
ignition,
roughly
adjust
the
lamp
position
with
the
horizontal
and
ver-
tical
adjustment
knobs.
Adjust
the
lamp
so
the
arc
gap
lies
approxi"
mately
in
the
center
of
the
condensing
lens.
This
can
be
seen
through
the
lens
if
the
focusing
lever
on
the
lens
is
full
back.
b
If
you
have
appropriate
safety
equipment,
ignite
and
warm
up
the
arc
lamp
per
the
instructions
in
the
power
supply
manual.
3
Adjustment
During
Operation
-
a
By
adjusting
the
condensing
lens,
focus
the
output
beam
so
an
image
of
the
arc
appears
on
a
wall
or
screen.
Do
not
view
UV
images
without
safety
glasses.
b
Adjust
the
lamp
position
to
center
the
output
in
the
condenser
lens
aper-
ture.
You
can
place
a
piece
of
paper
over
the
condenser
output
and
center
the
beam
on
the
aperture.
17
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66000-M
UNIVERSALARC LAMP HOUSING
c
Rotate
the
mirror
knobs
until
a
bright
spot
appears
alongside
the
arc.
(See
Fig.
6
on
page
19.)
This
bright
spot
is
a
distorted
image
of
the
arc
.
.
Focus
the
image
by
rotating
all
three
screws
In
the
same
direction
concur-
rently
(this
translates
the
mirror
back
or
forth).
When
focused
you
will
see
an
inverted
image
of
the
arc,
about
the
same
size
as
the
arc.
d
Place
the
mirror
image
over
the
main
(direct)
image
(as
In
Fig.
7
on
the
fol-
lowing
page)
or
alongside,
as
desired.
You
may
need
to
use
iterative
adjustments
to
keep
a
focused
mirror
image.
-WARNING-
YOU
CAN
SUPERIMPOSE
THE
TWO
IMAGES,
BUT
AVOID
REIMAGING
THE
ARC
HOT
SPOTS
ONTO
THE
ELECTRODES.
THIS
CAN
CAUSE
OVERHEATING
OF
THE
LAMP
e
Focus
the
condensing
lens
as
desired.
If
additional
range
of
adjustment
of
the
condensing
lens
is
desired:
,a
Remove
the
condensing
lens
assembly
handle
(take
care
to
record
the
orderly
assembly
of
its
parts).
b
Slide
the
inner
lens
barrel
forward
or
back
by
hand
until
another
tapped
hole
appears
in
the
spiral
slot.
c
Reassemble
the
handle
Into
this
new
hole.
4
Lamp
Operation
and
Cooling
~
These
arc
lamps
should
be
operated
close
to
their
rated
power.
Dropping
the
power
below
80%
of
rated,
can
lead
to
unusual
lamp
performance,
eventual
instability,
and
shortened
life.
With
mercury
lamps
it
can
also
lead
to
cooling
problems.
18
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I'"Q
I I
I I
".--.
I I
I I
, ,
'--.I
,"-
....
,
, \
I I
I I
I
1""
....
I
itA'
,
\I,~\~II
\\
.i:Ji,.'"
.:tll~
,\
H
I I
I I
\.d
66000-M
UNIVERSAL
ARC
LAMP
HOUSING
Fig.
6
The
electrodes
as
viewed
on
a
screen
in
front
of
the
condenser
lens
are
Inverted
(right).
The
reflector
image
as
a
screen
(left)
is
doubly
inverted
so
the
anode
of
a
xenon
or
mercury
(xenon)
lamp
appears
on
top.
P1
I I
Fig.
7
Correctly
positioned
reflector
overlays
the
inverted
arc
image
on
the
arc
gap.
The
image
is
the
same
size
as
the
arc
itself.
19
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