Guardian Brood Heaters
Owner’s Manual • Guardian
17
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of motor shaft when tightening.
FIG. 8
MOTOR MOUNT PLATE
FAN WHEEL
CLEARANCE
MOTOR
Air Proving Switch
The air proving switch is located on the fan housing at
the motor end of the brood heater. It must work properly
to allow an ignition cycle. If the air proving switch
contacts are closed before the igntion control starts the
fan motor, or do not close on a call for heat after the fan
motor starts, ignition will not occur . See Fig. 9a or 9b.
AW060/AW100/AW250 service (Fig. 9a):
-- Remove the two (2) sheet metal screws holding the
switch with bracket to blower housing.
-- Remove the assembly by turning the switch so the
paddle on the switch arm can be pulled through the
oblong hole on side of fan housing.
AW325 service (Fig. 9b):
-- Remove the two mounting nuts and slide the switch
from its mounting screws.
FIG. 9a
FIG. 9b
Flapper (Sail)
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discharge, works in conjunction with the air proving
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by the fan and motor before allowing an ignition cycle to
continue. See Fig. 10.
,IWKHÀDSSHULVELQGLQJLWVDUPZLOOQRWHQJDJHWKHDLU
proving switch and ignition will not occur.
(QVXUHWKHÀDSSHUOLIWVIUHHO\WKDWLWGRHVQRWELQGRQ
the fan housing and that it is free of dust and other
debris.
FIG. 10
REMOVE COVER
(AD325 ONLY)
REMOVE NUTS
AIR PROVING SWITCH
AD060/AD100; 6mm
AD250/325; 3 mm
Summary of Contents for AD060
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Page 38: ...Guardian Brood Heaters www lbwhite com Owner s Manual Guardian 38 Notes...
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