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Page Title: Figure 3-10. Control box assemb[y and component removal and installation.
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Figure 3-10. Control box assemb[y and component removal and installation.
c. Installation. Install the control box assem-
tween pins A, B, and C. Continuity should also
bly, control panel, and panels by reversing the
exist between pins 3 and 4.
order of removal.
c. Removal. Refer to figure 3-10 and remove
the phase sequence relay.
3-26. Phase Sequence Relay
d. Installation. Install the phase sequence
a. General. The phase sequence relay prevents
relay, control box cover, and front access panel
operation of the motor/compressor unit unless the
by reversing the order of removal.
phase sequence is correct. With the control cir-
cuit operating properly, 208 volts of current is
fed through the circuit breaker auxiliary con-
a. General. The circuit breaker protects the
tacts, relay pins 2 and 3 and the fuses into the
compressor from continuous overload and short
rectifier.
circuits.
b. Testing.
b. Testing.
(1) Disconnect the power source.
(1) Remove the front access cover (para
(2) Remove the front access panel (para
3-15) and control box cover (para 3-24).
3-15) and the control box cover (para 3-24).
(2) Refer to figure 3-10 and disconnect the
(3) Refer to the applicable wiring diagram
circuit breaker leads (tag leads for facilitating
(fig. 1-3 or 1-4) and check for continuity be-
3-14

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