(6) Position the replacement trans-
(2) Remove the two screws that secure
former inside the panel and replace
the unit to the cabinet and remove
and tighten the bolts.
the unit.
(7) Connect the transformer leads to
(3) Insert the TEMPERATURE CON-
the ammeter.
TROL switch on the replacement
(8) Replace the meter panel and tighten
unit through the slot in the cabinet.
the screws.
Replace and tighten the screws.
(4) Connect the two wires to the tem-
d. Removal and Replacement of Meter.
perature control unit.
(1) Remove the bolts that hold the
d. Removal and Replacement of HEAT-
meter to the meter panel and lift
OFF- FAN Switch.
out the meter,
(1) Tag and unsolder the three wires
(2) Tag and disconnect the leads from
and strap connected to the switch.
the meter terminals.
(2) Remove the ringnut that secures
(3) Connect the leads to the replace-
the switch through the top of the
ment meter.
cabinet and remove the switch.
(4) Position the meter in the panel and
(3) Solder the strap and the three wires
tighten the bolts.
to the replacement switch.
(4) Position the switch and tighten the
ringnut.
e. Removal and Replacement of Reset
Circuit Breaker.
a. Preliminary Procedures. Before per-
(1) Loosen the screws that connect the
forming the repair procedures in b through
two insulated wires to the circuit
g b e l o w , remove the heater from its
breaker. Loosen the bolt that se-
mounting base (para 35) and remove the
cures the bare copper wire to the
backplate and bottom plate as follows:
heating element.
(1) Remove the four screws that se-
(2) Remove the mounting screws that
cure the bottom plate to the heater.
fasten the circuit breaker to the
(2) Remove the two screws that secure
cabinet and remove the circuit
the backplate to the bottom plate,
breaker.
and remove the bottom plate.
(3) Connect the two insulated wires
(3) Loosen the power cord clamp on the
((1) above) to the replacement
backplate.
circuit breaker. Connect the bare
(4) Remove the four screws that se-
copper wire to the heating element.
cure the backplate to the heater and
remove the backplate.
Caution: Do not alter the shape
b. Removal and Replacement of Power
or length of the bare copper wire.
Cord.
(4) Position the circuit breaker and
(1) Loosen the screws that secure the
replace and tighten the mounting
power cord leads to terminal board
screws.
TBI (fig. 29).
f. Removal and Replacement of Motor
( 2 ) Pull the power cord out of the clamp
and Impeller.
in the backplate.
(1) Remove the four screws that se-
(3) Insert a new power cord through the
cure the motor bracket to the
clamp in the backplate.
cabinet and lift out the motor and
(4) Connect the leads to terminal board
bracket.
TB1.
(2) Tag and disconnect the motor leads
c. Removal and Replacement of Tem-
at the HEAT-OFF-FAN switch and
perature Control Unit.
at the taped splice in the heating
element cable.
(1) Loosen the screws that connect the
two wires to the temperature con-
(3) Remove the three screws that se-
trol unit.
cure the motor to the bracket.
