Three-Phase Adjustment - Aquacal SQ120R Instruction Manual

2.7 Three-Phase Adjustment

DANGER
Deactivate power while routing wiring to control board.
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Follow all National Electric Codes (NEC) and/or State and Local guidelines.
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WARNING
The information contained in this section is intended for use by qualified technicians, familiar with electrical
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service-industry safety standards and methods.
If a three-phase unit fails to operate at start-up, the orientation of the line voltage "field" wiring may need
to be adjusted.
The phase monitor is located inside the electrical panel.
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1. Deactivate power to the unit. Confirm that power is off to all three legs using an electrical
test meter set for the correct voltage.
2. Switch position of the incoming power wires at each leg as follows, re-connect power and
attempt to restart the unit. If the unit fails to start, disconnect power. Verify off and proceed
to the next leg.
Switch incoming power wires at L1 and L2 on the line side to the contactor.
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Switch incoming power wires at L1 and L3 on the line side to the contactor.
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Switch incoming power wires at L2 and L3 on the line side to the contactor.
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3. When heat pump starts, disconnect power and verify off. Then confirm all line voltage
connections are securely tightened. Reconnect power.
l If the heat pump does not start, contact AquaCal
AquaCal AutoPilot, Inc." on page 1.
Failure to heed the following will result in injury or death.
Failure to heed the following may result in injury or death.
® for further assistance. See "Contacting
Three-Phase
Monitor
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