16
CHART # 1 (continued)
When fire comes on
Crack in burner grate
Turning on fuel too fast when cold
Pilot too low. Dirty pilot
No lagging on burner
Too much air in mixing tube
ei
th
er
split vaporizer
slow gas leak
Red hot coils (overheating)
Fire on continuously (wet steam)
Vaporizer nozzle out of center
Insufficient air
Foreign object lying on burner grate
Dirt Asbestos
Vaporizer out of hole
B
A
C
K
F
IR
IN
G
When fire Shuts of
Dragging fire
Vaporizer nozzle large
Shutter closed
Nozzle in too far
Constant
Pilot light low or dirty
Flaw in vaporizer
Vaporizer nozzle not central
Vaporizer nozzle too large
Mud in mixing tube
Insufficient air
Carbon in vaporizer nozzle tip
Vaporizer nozzle tip not screwed tight
H
O
W
L
IN
G
Intermittent
Thermostat
Element bent
-
Needle valve tight
Element binding -
Spring weak
Water regulator
Screen clogged
Insufficient valve lift
Pin wedging-screen binding
F
IR
E
R
E
F
U
S
E
S
to
C
L
O
S
E
O
F
F
Flowmotor
Fuel stem packing too tight
Fuel stem bent or broken
Broken spring
Fuel seat leaking.
Hand valve leaking
Pumps faulty
Dry steam
Water regulator Flowmotor bypass
Valve not closing
Dirt on seat
Leaking seat
N
O
F
IR
E
w
it
ho
ut
R
A
C
IN
G
E
N
G
IN
E
Wet Steam
Thermostat not closing
Thermostat set too low
Thermostat leaking at seat