TM 10-4520-259-13&P
4-17. ELECTRICAL COMPONENTS (CONT)
q.
Splice red lead from common to red lead at lower conduit (4) injunction box. Secure with wire
nuts.
r.
Run other red lead out thru both tees and the short conduit (12).
s.
Run orange lead out thru both tees and short conduit (12). Run red and orange leads thru upper
conduit (9).
t.
Install upper conduit (9) to tee (8A). Install short conduit (12) onto connector (7). Install nut (11)
onto lower end of short conduit. Replace inspection plate (10) and gasket (13).
u.
Install high limit switch (15).
v.
Connect wires red, common, orange, normally open. Install upper conduit (9) to high limit switch
(15) and secure with nut (11).
w.
Replace cover and nut (14) on high limit switch (15).
x.
Install cover (18) on electrode holder (20). Secure with four screws (17).
y.
Install cover (24) on operating temperature control switch (25). Secure with nut (23) and replace
knob (22). Tighten setscrew on knob (22).
z.
Install rigid conduit (4) with wires (5) to both connectors (7) and tee (8B).
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aa.
Secure lower conduit by installing connector (7) into control box (6) and tighten nut (7A). Install
wires (5) into control box.
ab.
Remount circuit board (2) and flame control cover (1) by installing two screws (3).
Change 2 4-40
