ETC Source Four LED Series User manual

Copyright © 2015 Electronic Theatre Controls, Inc.
All Rights reserved.
Product information and specifications subject to change.
Part Number:
7060M2500-06.01 Rev B
Released: July 2015
Assembly Guide
Production Dates: September 2004 - Present
ATTENTION: The part numbers listed in this guide may differ from the parts
required for your particular Source Four fixture. Part numbers for
fixtures change occasionally as parts are replaced or upgraded.
To ensure that you are ordering the proper part for your specific
fixture, please contact your ETC dealer, or ETC Customer Service
for assistance.

iTable of Contents
Table of Contents
Basic Fixture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Assembling basic fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Lamp Burner Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Assembling lamp socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Reflector Housing Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Removing reflector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Installing reflector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Cleaning reflector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Shuttle Barrel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Assembling front barrel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Lens Tubes - 19° to 50° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Assembling lens tube - 19° to 50° . . . . . . . . . . . . . . . . . . . . . . .15
Cleaning glass lens - 19° to 50° and all EDLT lenses . . . . . . . .18
Lens Tube - 10° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Lens Tube - 5° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Assembling lens tubes - 5° and 10°. . . . . . . . . . . . . . . . . . . . . .21
Cleaning polymer lens - 5° and 10° . . . . . . . . . . . . . . . . . . . . . .21
Lens Tube - 14° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Assembling lens tube - 14° . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Cleaning glass lenses - 14° . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Lens Tube - 70° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Assembling lens tube - 70° . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Cleaning glass lens - 70° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Lens Tube - 90° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Assembling lens tube - 90° . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Cleaning glass lens - 90° . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
ETC
®
, Emphasis
®
, Expression
®
, Insight™, Imagine™, Focus™, Express™, Unison
®
, Obsession
®
II, ETCNet2™,
EDMX™, Source Four
®
, Revolution
®
, Sensor
®
, and WYSILink™ are either registered trademarks or trademarks
of Electronic Theatre Controls, Inc. in the United States and other countries.
All other trademarks, both marked and not marked, are the property of their respective owners.

Basic Fixture 1
Basic Fixture
Reference
Number
Part
Number
Description Quantity
Required
1 7060A2008 Lamp burner assembly rated up to 750W, Black 1
2 7060A2011-K Reflector housing assembly, single clutch, Black 1
3 7060A2011-K1 Reflector housing assembly, single clutch, White 1
4 7060A2020-K Reflector housing assembly, double clutch, Black 1
5 7060A2020-K1 Reflector housing assembly, double clutch, White 1
6 7060A2012-K Shutter barrel assembly, Black 1
7 7060A2012-K1 Shutter barrel assembly, White 1
8 7060A2000-K 5° lens tube, with knob 1
9 7060A2001-K 10° lens tube, with knob 1
10 7060A2050-K 14° lens tube, with knob 1
11 7060A2002-K 19° lens tube (6 x 16), with knob 1
12 7060A2003-K 26° lens tube (6 x 12), with knob 1
13 7060A2004-K 36° lens tube (6 x 9), with knob 1
14 7060A2005-K 50° lens tube (4.5 x 6), with knob 1
15 7060A2051-K 70° lens tube, with knob 1
16 7060A2052-K 90° lens tube, with knob 1
17 7060A4008-01 Knob set with male insert 2
18 HW5143 Washer, flat fiber 1
19 HW5197 Screw, 1/4-20 x 5/8, black zinc 1
Note:
Any part that is indicated as “Black” may be also ordered in white or silver. When
ordering white, use the part number suffix -1, and for silver, use the part number
suffix -5.
1
2
3
4
5
Figure 1
6
7
Color frame
Gel retainer
clip
8
9
10
11
12
13
14
15
16
18
17
19

2Source Four Assembly Guide
Assembling basic fixture
Step 1: Follow instructions under Assembling lamp socket, page 5.
Step 2: Follow instructions under Reflector Housing Assembly, page 8.
Step 3: Follow instructions under Shuttle Barrel Assembly, page 11.
Step 4: Assemble Lens Tubes following the instructions for your applicable lens degree
application.
Step 5: Insert lens tube assembly (8-16) fully into the front barrel assembly (6-7). Align
the mounting hole with the slot and secure with knob (17). See Figure 1.
Step 6: Install reflector housing (2-5) onto front barrel assembly (6-7) and align the two
mounting holes. Secure with screw (19) on top, and knob (17) on bottom. Tighten
both securely. See Figure 1.
Step 7: Install the lamp socket assembly (1) to the reflector housing (2-5) and secure with
brass knurled screw on rear of lamp socket assembly.
Step 8: Release the gel retaining clip by pushing it sideways while gently pulling
backwards.
Step 9: Insert the color frame.
Step 10: Lock the clip by pushing sideways while gently pushing it forward.

Lamp Burner Assembly 3
Lamp Burner Assembly
Reference
Number
Part
Number
Description Quantity
Required
1 7060A1033 Lamp retainer retrofit kit (Note: Does not include socket) 1
2 7060A2015 Light baffle retrofit kit
Includes socket w/ mounting hardware and sleeve 1
3 7060A3007 Socket, light baffle casting (Note: For all related fixtures regardless
of color) 1
4 7060A3011 Hub, index casting 1
5 7060A3012 Spring, lamp retainer 1
6 7060A3025 Screw, 1/4-20 x 1.55 knurled head 1
7 7060A3055 Housing, socket, casting, Black 1
8 7060A3056 Clamp, strain relief, Black 1
9 7060A3085 Lamp retainer wire 1
10 7060A4007 Knob, X-Y, lamp set 1
11 7060A4008-02 Knob, Z, lamp set w/ female insert 1
12 7060A4011 Bushing cup 1
13 7060A4019 Label, Fixture Warning 1
14 7060A4037 Handle, Insulated Rear, Black 1
15 7060A4094 750W Handle label, Black 1
16 7060A4095 Label, 750W Handle, White 1
17 7060B7003
48" Source Four ground wire assembly
W420 wire, 16 Awg, 200C/300V, green, UL 1180/CSA w/ J490T
lugs
1
18 7060B7007
4" Source Four ground wire assembly
W420 wire, 16 Awg, 200C/300V green, UL 1180/CSA w/ J490T
lugs
1
19 7060B7019 S4 UL Socket Assy 1
20 HW2125 Screw, 6-32 x 3/8” PhFHTC (lamp blocking screw not pictured) 1
21 HW2181 Screw, self tap, 6-32 x 5/8, black zinc 4
22 HW3103 Screw, 8-32 x 5/8 PhFHMS, black zinc 2
4
12
7
24
31
29
25
18
3
239
14
21
6
11
27
28
26
8
22
5
Figure 2
10
13
17
30
19
7

4Source Four Assembly Guide
23 7060A3204 Bolt, 1/4-20 x 1 3/4”, full thread 1
24 HW5123 Nut, hex, 9/16-18, black zinc 1
25 HW534 Nut, hex, 1/4-20, black zinc 1
26 HW746 Screw Retainer Flat 12-6-1 1
27 HW747 Washer, wave 1
28 HW748 Spring, compression CO720-072 1
29 HW749 Spring Ground 1
30 HW8209 Clip, Tinnerman 1
31 W6195 Sleeve, fiberglass 39”, 5/16”, Black 1
32 W689-1 Sleeve, fiberglass 39”, 5/16”, White 1
Note:
Any part that is indicated as “Black” may be also ordered in white or silver. When
ordering white, use the part number suffix -1, and for silver, use the part number
suffix -5.
Reference
Number
Part
Number
Description Quantity
Required

Lamp Burner Assembly 5
Assembling lamp socket
Tools Required:
• Open-end adjustable wrench or a 7/16” socket
• Needle-nose pliers
• #2 Phillips screwdriver
Step 1: Set the crossbar of the retainer clip (9) under the two hooks on the clip bracket
as shown in Figure 3.
Step 2: Place the Tinnerman clip (30) over the retainer clip crossbar between the two
hooks and press it down firmly until it snaps into place.
Step 3: Insert the bolt (23) through the light baffle socket casting (3). See Figure 4.
Step 4: Install the green ground wire assemblies (17 and 18) on the bolt (23) with the
prongs on the crimped connectors toward the casting. Run both wires through
the indent in the lip around the bolt hole. Secure with nut (25) and tighten
securely (60 inch pounds).
Step 5: Place the socket assembly (19) into the light baffle socket casting (3). Be sure it
is well seated.
30
9
Figure 3
30
23
18
17
9
19
5
25
Figure 4
3

6Source Four Assembly Guide
Step 6: Install the lamp retainer spring (5). The lamp retainer spring secures the socket.
Insert the spring one end at a time, making sure the rectangular slot in each side
of the spring seats on the corresponding tab in the casting. See Figure 4.
Step 7: Install the bushing cup (12) into the housing socket casting (7) as shown in
Figure 5. The cup should slide smoothly up and down, but not side to side.
Step 8: Insert the threaded end of the index hub (4) through the holes in the bushing cup
and the back of the housing socket casting (7).
Step 9: Slide the X-Y knob (10) over the exposed index hub bolt (4), then insert the wave
washer (27) on the bolt and secure with the 9/16 hex nut (24). Hand tighten the
X-Y knob (10).
Step 10: Insert the knurled head screw (6) through the housing socket (7) casting as
shown in Figure 6.
Step 11: Install the shorter green ground wire (18) onto the screw. The prongs on the
crimped connector should be toward the casting.
Step 12: Install the ground spring (29) onto the screw and secure it with the Southco flat
retaining ring (26). Install the Southco ring with its prongs away from the casting.
Note:
If the spring does not seat correctly, coax it into place with a screwdriver or needle-
nose pliers.
Note:
Install the wave washer with the upward curve toward the hex nut.
Note:
Use pliers to straighten the Southco retaining ring (26) if it bends when you install
it on the bolt.
12
7
4
27
24
10 Figure 5
6
8
29
26
Cable Clamp in
Housing
22
28
11
Figure 6 Figure 7
Green wires
White wires
7
18
23

Lamp Burner Assembly 7
Step 13: Lay the leads in the bottom half of the cable clamp (located in the housing socket
casting [7]), making sure that the fiberglass sleeving extends slightly past the
screw holes in the housing socket casting. Install new sleeving if necessary.
Then, route the wires as shown in Figure 7.
Step 14: Install the top half of the cable clamp (8) and secure it with the two screws (22).
Tighten the screws alternately to ensure a solid connection.
Step 15: Using the four screws (21), attach the handle (14) to the lamp socket assembly.
See Figure 2.
Step 16: Place the compression spring (28) on the protrusion on the inside of the index
hub. See Figure 6.
Step 17: Insert bolt (23) through spring (28) and through the index hub (4) of the housing
socket (7), joining the two castings as shown in Figure 6. Make sure wires are
not pinched between the two pieces.
Step 18: Before proceeding, check again to make sure the wires are still positioned as
indicated in Figure 7. Adjust if necessary.
Step 19: Press the two castings together firmly so the bottom of the light baffle (3) sits on
top of the cable clamp (8), then install Z lamp knob (11). Hand tighten the knob
all the way to the right. See Figure 6.
CAUTION:
You must follow the wire routing diagram to ensure that the socket leads do not
interfere with the lamp focus mechanism.
Note:
To ensure that the clamp holds the cable tightly, flatten the cable, then fold over
the sleeving before you install the top half of the clamp. Make sure the top edge
of the cable clamp is even with the edge of the socket to prevent interference with
lamp focus movement. Make sure sleeving is not pinched.
CAUTION:
You must install Z knob as described above to ensure proper lamp focus travel.

8Source Four Assembly Guide
Reflector Housing Assembly
Reference
Number
Part
Number
Description Quantity
Required
1 7060A2013-K Reflector housing rivet assembly, single clutch, Black 1
2 7060A2019-K Reflector housing rivet assembly, double clutch, Black 1
3 7060A3006 Clip, reflector retainer 4
4 7060A3019 Spring, reflector support 1
5 7060A3058 Bracket, Yoke, Black 1
6 7060A3080 Light leak baffle, Black 2
7 7060A4008-01 Knob set with male insert 1
8 7060A4010 Bushing, gate 4
9 7060A4015 Reflector, molded glass, coated 1
10 HW5125 Bolt, carriage 5/16-18 x 3/4” LG 2
11 HW5126 Washer, flat, 5/16, black zinc 4
12 HW5127 Nut, hex, 5/16-18 2
13 HW5193 Bolt, hex, 5/16-18 x 3/4”, black zinc 2
14 HW5197 Screw, PH, 1/4-20 x 5/8”, black zinc 1
15 HW752 Rivet, machine, 3/16 x 31, oval head, black zinc 4
16 HW8144 Handle, yoke, knob, 5/16-15, Black 2
Note:
Any part that is indicated as “Black” may be also ordered in white or silver. When
ordering white, use the part number suffix -1, and for silver, use the part number
suffix -5.
Double-clutch reflector housing
for 5°and 10° fixtures.
Figure 8
1
2
3
4
5
7
8
9
10
11
13
14
15
16

Reflector Housing Assembly 9
Removing reflector
Tools Required:
• Minimally padded work surface (cardboard, carpet, or rubber mat recommended)
Step 1: Place the reflector housing face down on your work surface so that the concave
reflector surface points downward.
Step 2: Loosen the clutch and rotate the yoke so that it is perpendicular to the housing
at roughly a 90° angle. Tighten the clutch.
Step 3: Using the yoke as your handle, raise the housing assembly off of the work
surface a few inches and then firmly tap the housing on the work surface. This
should force the reflector out of its clips.
Step 4: Carefully lift the housing to see if the reflector is released. If it is not, repeat step
3 with slightly more force.
Installing reflector
Step 1: Place the reflector housing casting (1-2) on a flat work surface with the large
opening facing up.
Step 2: Install the reflector support spring (4) in the circular opening at the base of the
casting.
Step 3: Insert the reflector (9) at an angle, under any three adjacent legs of the reflector's
clips.
Step 4: Gently press down on the opposite side of the reflector until it snaps into place
under the remaining clips.
WARNING:
This procedure may crack or break the reflector. Always wear gloves, safety
glasses, and a dust mask when performing this procedure.
Note:
The following assumes all four reflector retainer clips (2) have already been
riveted to the reflector housing casting (1) and the gate bushings (3) installed on
the retainer clips. See Figure 8.
Note:
If the reflector does not snap in, turn the casting over. Gently pull on the side of
the reflector that has not snapped in until the rest of the reflector slides into place.
Step 3 Step 4
Under three
adjacent clips.

10 Source Four Assembly Guide
Cleaning reflector
Remove dust with a blast of oil-free air or wipe with a clean, lint-free cloth. Isopropyl alcohol,
distilled water or a 50%-50% mixture of each can be used to clean the glass surface.
WARNING:
Do not use ammonia-based or other harsh commercial cleaners. Clean
reflector only as directed.
Commercially available glass cleaning agents should be avoided as they
may contain ammonia, other harsh chemical detergents or abrasive agents.
These cleaners may damage the glass surface and the Anti-Reflective
coatings. Do not immerse or soak the glass in any cleaning solution.

Shuttle Barrel Assembly 11
Shuttle Barrel Assembly
Reference
Number
Part
Number
Description Quantity
Required
1 7060A2025 Shutter blade assembly 4
2 7060A3001-01 Plate, divider with dimples (bottom) 1
3 7060A3001-02 Plate, divider (top) 1
4 7060A3003 Plate, gate (middle) 2
5 7060A3045 Cover, Iris Slot, Black 1
6 7060A3052 Shutter barrel, top casting, Black 1
7 7060A3053 Shutter barrel, bottom casting, Black 1
8 7060A4006 Shutter blade handle 4
9 HW3165 Screw, 8/32 x 1/2, PhPH Taptite Blz 4
10 HW232 Screw, 6-32 x 1/4” (Slot cover retention - pre 11/99) 2
11 HW372 Screw, 8-32 x 1/4” (begins 11/99) 2
12 HW370 Nut, Ny-lok, 8/32, black zinc 4
13 HW391 Screw, 8-32 x 3/4” PhPHMS, black zinc 4
14 HW754 Shutter spring 4
Note:
Any part that is indicated as “Black” may be also ordered in white or silver. When
ordering white, use the part number suffix -1, and for silver, use the part number
suffix -5.
Shutter Assembly: The bottom divider plate
(4) has four dimples punched into the surface;
the top plate (6) has none. The middle divider
plates (5) are noticeably thinner-gauge metal
than the other two.
6
7
See detail to
the right
14
9
5
11
4
3
2
Figure 12
Figure 13
1
8
8

12 Source Four Assembly Guide
Assembling front barrel
Tools Required:
• #2 Phillips head screwdriver
Step 1: Stand the top and bottom front barrel castings (6 and 7) upright with the shutter
end of the castings toward the bottom.
Step 2: Slide the bottom divider plate (2), into its place in the bottom casting (7). The
dimples on the divider plate must point down.
Step 3: With the bottom barrel casting (7) to your left, place two shutter blades (8) on top
of dimple plate (2) and opposite each other so together they form a barrier. The
handles should extend past the barrel casting, rivets pointed down. These will be
the side shutters (See Figure 13).
Step 4: Place a divider plate (4) on top of the two shutter blades.
Step 5: Place another shutter blade on top of the middle divider plates and perpendicular
to the previously installed shutter blades. This will be the top shutter, so align the
handle away from the bottom casting (7). Then place the other divider plate on
top.
Step 6: Place the fourth shutter blade on top of the divider and through the bottom
casting in the final shutter position. Pull the blade and plate assembly slightly
forward to allow the handle to slip through the slot in the bottom casting. Then
fully seat the blader assembly into the casting again.
Step 7: Place the top divider plate (3) on top of the fourth shutter blade.
WARNING:
During assembly, the shutter springs can pop out of place. Always wear
protective eyewear during this procedure.
Note:
The top front barrel casting contains the iris slot.
Note:
The bottom divider plate (2) has four dimples punched into the surface; the top
plate (3) has none. The middle divider plates (4) are noticeably thinner-gauge
metal than the other two.
The notches on the divider plates must fit against the flanges in the casting so the
plates do not move.
WARNING:
Divider plate edges are sharp. Handle with caution.
Note:
Make sure no shutter assembly components are under the pattern holder guides.

Shuttle Barrel Assembly 13
Step 8: With both front barrel castings still standing upright, join the two halves, sliding
the handle of the top shutter blade through the slot in the top front barrel casting
(6).
Step 9: Starting at the bottom of the castings (closest to the shutters), use four PHMS
screws (5) to fasten the front barrel casting halves together, as shown. Hand
tighten only (25 inch pounds).
Step 10: Turn the front barrel assembly over so that the narrower end is on your work
surface.
Step 11: Install the four shutter springs (14) between the four dimples in the shutter plate
and the tabs in the lip of the casting.
Step 12: Place iris slot cover (5) over the iris slot. Use two screws (11) to secure the cover.
Note:
The ends of the two front barrel castings must be even. Adjust as necessary
before completely tightening the nuts and screws. Failure to do this could interfere
with the barrel rotation.
Note:
Install the springs at the joints in the castings on either of the tabs at the joint. Once
they are installed, the springs at the joints will sit at a slight angle.

14 Source Four Assembly Guide
Lens Tubes - 19° to 50°
Reference
Number
Part
Number
Description Quantity
Required
1 7060A3169 Lens Tube, left casting, Black (rev. J begins 01/06 to present) 1
2 7060A3171 Lens Tube, right casting, Black (rev J. begins 01/06 to present) 1
3 7060A4077 Aspheric lens, 19° (begins 10/98) 1
4 7060A4001 Aspheric lens, 26° 1
5 7060A4020 Meniscus lens (front), 36° 1
6 7060A4021 Bi-convex lens (back), 36° 1
7 7060A4004 Aspheric lens, 50° 1
8 7060A3079 Clip, gel retainer, 90° bend 1
9 7060A4008-01 Knob set with male insert 1
10 7060A4009 Bushing, guide 8
11 7060A4012 Pad, lens support 5
12 HW3154 Screw, Phillips, 8-32 x 5/8 Taptite 4
13 HW5143 Washer, flat fiber 1
14 HW534 Nut, Hex, 1/4-20, black zinc 2
15 HW750 Spring, retainer 1
16 7060A4033 19° Lens tube label, white text (for black fixtures) 1
17 7060A4034 26° Lens tube label, white text (for black fixtures) 1
18 7060A4035 36° Lens tube label, white text (for black fixtures) 1
19 7060A4036 50° Lens tube label, white text (for black fixtures) 1
20 7060A4073 19° Lens tube label, black text (for white fixtures) 1
21 7060A4074 26° Lens tube label, black text (for white fixtures) 1
22 7060A4075 36° Lens tube label, black text (for white fixtures) 1
23 7060A4076 50° Lens tube label, black text (for white fixtures) 1
Note:
Any part that is indicated as “Black” may be also ordered in white or silver. When
ordering white, use the part number suffix -1, and for silver, use the part number
suffix -5.
12
Figure 14
Note: Lenses are degree
specific. Do not interchange
lenses (i.e. do not place a
19° lens in a 26° slot).
1
2
8
9
10
11
13
14
15
3
4
5
6
7

Lens Tubes - 19° to 50° 15
Assembling lens tube - 19° to 50°
Lens Positions
The lens tube casting can accept either original or Enhanced Definition (ED) lenses. The
lens positions are color-coded within the lens casting to match the colored dots on the
lenses (see Figure 15). Only lenses bearing at least one dot of the indicated color should
be placed in that position.
Figure 15
Blue 
BLU
36
36ED
19ED
50ED
Yellow 
YLW
50
26ED
Green 
GRN
50ED
Orange 
ORNG
36
36ED
Black 
BLK
26
Red 
RED
19
19ED
26ED
Align lens dots toward this end

16 Source Four Assembly Guide
Lens Markings
The lenses are color-coded for identification. Normal lenses have a single dot of color while
Enhanced Definition lenses have a combination of white dots and color dots. See Figure 16
for lens color coding.
Standard Lenses
19°
26°
36°
50°
19° ED
26° ED
36° ED
50° ED
Rear lens - 1 white dot & 1 blue dot
Front lens - 1 white dot & 1 red dot
Rear lens - 1 white dot & 1 yellow dot
Front lens - 1 white dot & 2 red dots
Rear lens - 1 white dot & 2 blue dots
Front lens - 1 white dot & 1 orange dot
Rear lens - 1 white dot & 3 blue dots
Front lens - 1 white dot & 1 green dot
Lens - Red Dot*
(one or two dots)
Lens - Black Dot*
(one or two dots)
Lens - Yellow Dot*
(one or two dots)
Rear lens - Blue dot
Front lens - Orange dot
Align lens dots toward this end
Enhanced Definition
Lenses
Figure 16
* Some pre-2006 fixtures have lenses with two color code dots. There is no difference between lenses with
one dot or two dots.

Lens Tubes - 19° to 50° 17
For maximum gel life with specific lens tubes, refer to the tables below.
Assembling the lens tube
Tools Required:
• #2 Phillips head screwdriver
Step 1: Place the left and right lens tubes (1 & 2) face up on your work surface. Align the
tubes so the colorframe grooves are to your left.
Step 2: Install lens support pads (11) as required inside both lens tubes. Four pads are
required per lens. Insert pads short-side down, as shown in Figure 14.
Step 3: Install the 1/4-20 hex nut (14) in the left lens tube as shown.
Step 4: Install the short end of the gel retainer clip (8) in the left lens tube (1).
Step 5: Position the clip in the forward, locked position, then install the retainer spring
(15) on the clip.
Step 6: Install the required lens (or lenses) (3, 4, 5, 6, 7, or 8) in the correct position as
shown on Figure 15.
Step 7: See Figure 14. Invert the right lens tube (2) and hold it above the left lens tube
(1). Fit the clip (8) and spring (15) into the right lens tube. Gently place the right
lens tube onto the left lens tube, making sure that the 1/4-20 hex nut and
Lens Tube Soft Focus Back
(Lamp “flat”)
Sharp Focus
(Lamp “cosine”)
Soft Focus Forward
(Lamp “peak”)
Soft Focus Forward
(Lamp “cosine”)
19° worse better better not applicable
26° worse better better not applicable
36° better better worse not applicable
50° worse better better not applicable
ED Lens Tube Soft Focus Back
(Lamp “flat”
Sharp Focus
(Lamp “cosine”)
Soft Focus Forward
(Lamp “peak”)
Soft Focus Forward
(Lamp “cosine”)
19° worse better better not applicable
26° better better worse not applicable
36° better better worse not applicable
50° better better worse not applicable
Note:
Install the lens with the painted dot facing the front of the tube. Seat the lens in the
support pads so the dot remains visible.
Figure 18
Lens support pad
Lens
Lens holder
casting
Hex nut
Lens holder casting
Figure 17

18 Source Four Assembly Guide
retaining clip assembly stay properly seated. Make sure the lens stays straight
by looking into the lens holder. The top edge of the lens should seat properly in
the support pads.
Step 8: Install the PHMS screws (12) in four locations with Ny-lok nuts (14). The PHMS
screw location on the bottom of the colorframe holder is threaded and does not
require a Ny-lok nut. Hold the nuts tight against the casting and torque the screws
to 25 inch pounds.
Step 9: Install the eight bushing guides (10). Point the narrow tab on the bottom toward
the back of the tube; point the square tab toward the front. Squeeze the guides
slightly so they bend in the middle then snap into place. Make sure the rounded
side of the guide faces outward from the tube.
Cleaning glass lens - 19° to 50° and all EDLT lenses
Remove dust with a blast of oil-free air or wipe with a clean, lint-free cloth. Isopropyl alcohol,
distilled water or a 50%-50% mixture of each can be used to clean the glass surface.
WARNING:
Do not use ammonia-based or other harsh commercial cleaners. Clean lens
only as directed.
Commercially available glass cleaning agents should be avoided as they
may contain ammonia, other harsh chemical detergents or abrasive agents.
These cleaners may damage the glass surface and the Anti-Reflective
coatings. Do not immerse or soak the glass in any cleaning solution.
See
Detail
“A”