Conair MPW, MPA manual Connecting The Main Power Supply, Open the unit’s electrical enclosure

WARNING: Electrical shock hazard

This equipment is powered by three-phase main voltage. Always disconnect and lock out the main power source before performing any work involving electrical connections. All wiring, disconnects and fusing should conform to your region’s electrical codes and should be installed only by qualified personnel.

CONNECTING

THE MAIN

POWER SUPPLY

Before beginning, note the electrical specifications on the nameplate mounted to the side of the unit. The electrical hookup must match these specifications with +/- 10% maxi- mum voltage variance. An improper power supply could damage the unit as well as seriously injure an operator.

The electrical hookup also should run through a fused dis- connect sized for the nameplate amperage and conforming to Article 250 of the National Electrical Code.

1 Open the unit’s electrical enclosure.

2 Insert the main power wire through the knockout hole in the right side of the enclosure.

3 Secure the power wire with a rubber compres- sion fitting or strain relief.

4 Connect the power wires to the terminals.

Connect the three hot wires to L1, L2, and L3 on the terminal block.

5 Connect the ground wire to the copper grounding mount.

If you have installed a disconnect device, follow the manufacturer’s wiring instructions.

IMPORTANT! Before initiating power to the unit:

❒ Check the system for leaks. ❒ Verify that the voltage, phase,

frequency, amperage, disconnect fuse and minimum wire size meet the specifications stated on the name- plate mounted on the side of the unit.

❒Verify that resistance to ground on each phase is at least 1 meg ohm.

IMPORTANT: Always refer to the wiring diagrams that came with your unit before making electrical connec- tions. The diagrams show the most accurate electrical component information.

UGH004/0999 microKool Portable Chillers INSTALLATION 3-5