Maintaining the FPD
+
12
Maintaining Your GC 247
6 Install the new ignitor assembly and tighten with the nut 
driver. Do not overtighten. (If the ignitor comes with a 
copper washer, discard the copper washer.)
7 Replace the ignitor collet and cable assembly and tighten the 
screw. Align the collet set screw as shown. Do not let the 
collet screw touch metal parts, such as the emission block or 
PMT bracket (dual wavelength detector).
8 Replace the FPD
+
 cover. (See “To Install the FPD
+ Cover” 
on 
page 248.)
9 Restore the analytical method.
10 Wait 20  min. for the detector to heat up, then ignite the 
flame.
11 Reset the EMF counter. See To Reset an EMF Counter in the 
Operation Manual.