Cornelius Millenium II 4000 Installation Manual page 8

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6. Filling the Ice Water Bath

A. Remove the top panel and locate the filler hole in the top of the refrigeration deck.

B. Fill the water bath with cool water until it begins to trickle out of the overflow tube and into the drip tray. Use

tap water. Do Not use distilled water as it's purity has very low electrical conductivity. This can degrade

performance of the electronic ice bank control.

C. Re-install the top panel.

7. Connecting Power Supply & Starting Refrigeration

A. Plug the power cord into a 115VAC 15 Amp grounded receptacle.

B. Place the rocker switch and key switch, both located on the top panel, to the "on" position. Note that the

rocker switch controls power to the dispenser and the key switch controls the pumps and valves.

C. The Millennium forms an ice bank of approximately 14 lbs. (6.4 kg) in about 5 hours at a room temperature

of 75°F (24°C). Once the ice bank has grown to the proper size, the ice bank control will shut down the

refrigeration circuit.

D. The ice bank control operates the compressor and condenser fan motor to control the size of the ice bank.

The control board will not start or restart the compressor until after the compressor has been off for at least

3 minutes to allow refrigeration system pressure to equalize.

NOTE: It is normal to see water trickle from the overflow as the ice bank forms.

8. Electronic Control Board Function

An integrated circuit board and microprocessor are used to control the electrical functions of the Millennium bever-

age dispenser. Functional features of the control board include:

•

Ice bank control with compressor start-up protection

•

LED diagnostics

Inputs to the control board include line power and the ice bank position sensor. Switched outputs from the circuit

board include the compressor, agitator motor and condenser fan motor (refer to electrical diagram in reference sec-

tion).

9. Ice Bank Control

The ice bank control operates the compressor and condenser fan motor to control the size of the ice bank. The

control board will not restart the compressor until after the compressor has been off for at least 3 minutes to allow

the refrigeration system pressures to equalize.

10. LED Diagnostics

LED diagnostic lights are mounted on the control board to assist in troubleshooting. There is one green LED and

one red LED.

Green LED

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Millennium II 4000 Installation Manual

Red LED

Publication Number: 620919547INS

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