L.B. White 300 Director - Manual (Page 17)

16
1. Remove the photocell by firmly grasping its body and
pulling it from its holder. See Fig. 17.
2. Ensure tab on photocell body is firmly pushed within
slot of holder at reassembly to lock photcell in place
Cleaning
-- Disconnect photcell from holder.
-- Using a clean dry cloth, wipe lens of photocell.
Testing the photocell:
-- Disconnect electrical leads of photocell.
-- Connect ohm meter between leads.
-- Note resistance of photocell. Ohm meter should read
anywhere from 50 to 60 k ohm.
-- Shine a bright light (flash light) at the photocell lens.
-- Resistance should drop to anywhere from 2 - 4 k
ohm. If no change in resistance, the photo cell is
defective and should be replaced.
FIG. 17
PHOTOCELL
PHOTOCELL
IGNITERS
Cleaning and Checking Gap
a. Loosen nuts at burner head.See Fig.18.
b. Remove head from heat chamber.
c. Clean the igniter tips using emery cloth.
d. Ensure proper gap.See Fig.19
Replacement.
-- Follow steps a and b above.
-- Remove the ignition cables and igniter mounting
screws.
-- Ensure proper igniter gap after servicing.
FIG. 18
FIG. 19
5/32 in (.157 in.) 3/32 in. (.0938 ) 5/32 in. (.157)
Y Z X
IGNITION CABLES
SCREWS
NUT