Source Four PARNel Assembly Guide 5
Lamp Burner Assembly
Tools required: Phillips screwdriver
1. Install the ground wire (7) and the two TP22 white leads (5) in the sleeving (12).
2. Snap the focus handle (13) onto the burner (1). (Figure 2)
3. Place the TP22 mica (4) in the burner casting (1), as shown in figure 3.
4. Secure the ground wire lug (7) with prongs down, onto the burner casting (1), using 6-32x3/8” screw (8).
5. Place the TP22 contacts (5) into the grooves on back of the ceramic, and then place on the mica (4). Bend the TP22
white leads as necessary to position around the knurled head screw hole, see figure 3.
Note
: Position the wires with the green ground wire on top of the two TP22 white leads. Make sure the green ground
wire is not touching any part of the burner casting.
6. Insert the 8-32x1/2” screws (10), into the washers (9) and place in four positions (as numbered in figure 4) in the strain
relief casting (2).
7. Position the sleeving assembly (12), as shown in figure 3. Fold the sleeving so it fits cleanly in the slot between the
burner and the strain relief.
8. Place the strain relief (2) on the burner casting (1). Loosely attach the washers (9) and screws (10). The ceramic (3)
must be centered in the opening in the strain relief (2). (Figure 4)
WARNING!
Make sure that both of the TP22 contacts are centered in the opening in the ceramic and the ceramic is
centered in the opening in the strain relief casting. To center the TP22 contacts, place a small screwdriver (or other
small tipped device) in the center of the TP22 contacts and maneuver them until they are centered in the ceramic.
Failure to center the TP22 contacts and/or the ceramic can cause problems with inserting lamps.
9. Tighten the screws in the order shown in figure 4, to guard against stripping the screws. Make sure the assembly
remains centered, if it doesn’t, loosen the screws and readjust. (You may want to keep the screwdriver in place in the
TP22 contacts while tightening the screws.)
10. Install the 6-32x1/4” screw (11) into the strain relief. (Figure 4)
11. Make sure the focus handle is secure, then insert the knurled head screw (6) through the handle (13) into burner cast-
ing (1).
ceramic (3)
mica (4)
TP22 contact
and lead (5)
knurled head
screw hole
sleeving (12)
ground wire (7) and
6-32 X 3/8 screw (8)
strain relief
casting (2)
burner
casting (1)
6-32 X 1/4”
screw (11)
1
2
4
3
Figure 3