LGA/LCA/LHA - lennox
LGA/LCA/LHA - lennox
LGA/LCA/LHA - lennox
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TRIP<br />
INDICATON<br />
WINDOW<br />
AMP SETTING<br />
POINTER<br />
AMP SETTING<br />
CONTROL<br />
(BLUE DIAL)<br />
RED TEST<br />
BUTTON<br />
(Push To Test)<br />
LOAD VOLTAGE OUT<br />
LINE VOLTAGE IN<br />
CLEAR<br />
COVER<br />
(SHOWN<br />
CLOSED)<br />
STOP<br />
BUTTON<br />
(RED)<br />
BLUE RESET SCREW<br />
(Shown in AUTO position as<br />
shipped from the factory)<br />
TELEMECANIQUE OVERLOAD RELAY<br />
Page 38<br />
DETAIL SHOWING RESET BUTTON<br />
ADJUSTED TO MANUAL POSITION<br />
Lift clear cover and turn adjustment screw<br />
counterclockwise. Reset screw will pop out<br />
when pointer is in M (manual position). Close<br />
cover to lock reset screw into position.<br />
Lift clear cover to adjust relay amp setting according to value given on the blower motor nameplate.<br />
Proper relay amp setting equals motor nameplate FLA X service factor of 1.15 X .95.<br />
Cover must also be lifted to adjust control mode from automatic reset to manual reset (see detail<br />
above) and to test the control.<br />
Control must be in the manual reset mode to perform a test. Use a pointed object to press the small<br />
red test button. A yellow marker should appear in the trip indication window to the right of the amp<br />
setting control. Press the blue reset screw to reset the relay.<br />
The red STOP button opens the normally closed contacts which power the blower motor. This button<br />
stops blower motor operation as long as it is pressed in.<br />
FIGURE 8<br />
SIEMENS OVERLOAD RELAY<br />
BLUE RESET BUTTON IN<br />
FACTORY-SET AUTO MODE<br />
(Turn clockwise to H for<br />
manual reset)<br />
GREEN TRIP INDICATOR<br />
(Flush with surface −− not tripped;<br />
Above surface −− tripped)<br />
RED TEST BUTTON<br />
AMP ADJUSTMENT DIAL<br />
Adjust relay amp setting according to value given on the blower motor nameplate. Proper relay amp<br />
setting equals motor nameplate FLA X service factor of 1.15 X .95.<br />
Use small slotted screwdriver to adjust control mode from automatic reset (A) to manual reset (H).<br />
Control must be in the manual reset mode (H) to perform a test. Press the red test button. Green trip<br />
indicator should pop out. Press the blue reset screw to reset the relay.<br />
FIGURE 9