Precision Control Systems LineIR 5194 - Manual (Page 17)

106687-001 Rev. 2 6-3
5. While holding the lamp, gently pull the lead wires out of the ceramic terminal
blocks, out of the lamp clips, and set the old lamp aside for disposal. (Models
5194-02 and 5194-04 do not have lamp clips, but a half-circle groove that the
lamp fits in.)
6. While holding the replacement lamp by the ceramic end seals, place the lamp into
the lamp clips located on each end of the heater. Orient the lamp so that the gas
fill tip, formed into the quartz tube of the lamp, points out away from the
reflector.
7. Insert the bare wire of each insulated lamp lead into the ceramic terminal block
position that previously held the old lamp. Push each lead wire into the terminal
block far enough so, that when tightened, the setscrew will hold the lead securely.
8. Tighten the setscrews in each terminal block so the lead wires are held securely.
Note: tighten the terminal block set screws to a torque of 0.6 Ft.-Lbs. [0.82 N-m].
9. Form a loop within each lead along its length from the top of the cooling manifold
and the ceramic terminal block. This loop will act as a strain relief within the lead
during normal operation of the heater.
10. Reinstall the quartz window within the heater by carefully sliding the window into
the grooves machined into the heater reflector.
11. Reinstall both end covers and secure each to the heater with the two screws per
end cover.
Note: tighten the end cover screws to a torque of 1.7 Ft.-Lbs. [2.3 N-m].
Figure 6-3. Model 5194 Lamp Removal.