Condenser Modulating Valve Removal; Bin Control - Cornelius 500 Series Installation And Service Manual

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ONDENSER ODULATING
!
WARNING:
Disconnect power to the unit before servicing. Follow all lock out/tag out procedures established by the user. Verify all
power is off to the unit before performing any work.
Failure to comply could result in serious injury, death or damage to the equipment.
1. Shut off water supply to condenser and evacuate refrigerant from system.
2. Remove inlet water line from Condenser Modulating Valve. Also remove tube from high side refrigerant line.
3. Remove Condenser Modulating Valve and bracket from unit.
4. Remove valve from bracket.
5. Replace Condenser Modulating Valve by reversing Steps 2 thru 4. Then pull system into vacuum.
6. Charge unit with proper amount of refrigeration.
7. Turn power and water on to unit.
8. With unit running, adjust modulating valve to proper setting.
9. Go through a complete system check.
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IN ONTROL
The type of bin control used on all WCC Models is thermostatically controlled. The switch itself is inside the electrical
box and can be serviced from the front of the unit. The cap tube bulb is located directly under the ice chute.
To test the switch, disconnect power to the unit and remove one wire from the switch. Connect both leads of the
ohmmeter to the Bin Control Switch terminals. With the control bulb at room temperature ohmmeter should read
"Closed Circuit". Refer to Figure 15.
Cover the control bulb with ice. Within one minute the switch should "click" and the ohmmeter should read an "Open
Circuit."
The Bin control is in series electrically with the coil on the antifreeze relay along with the low water safety. If the unit is
water cooled, the condenser high pressure cut out is also in series.
The Control Switch is held in place inside the electrical box by two screws. Control bulb is positioned under the ice
chute and can be replaced by removing the screw that holds the bracket to the base of the unit. With the control and
bracket removed, slip the bulb off the end of the bracket. The most important thing to remember when replacing the
probe is to be careful not to cut or kink it and be sure the sensor bulb is located in a position to shut the unit down
before ice reaches the ice chute.
This icemaker is also equipped with a safety ice level sensor. This sensor control is located on the dispense tray
cover. This switch is also in series with the anti-freeze relay and other safety circuitry.
© 2002-2014, Cornelius Inc.
Continuous Flow Icemaker Installation and Service Manual
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ALVE EMOVAL
Figure 15. Bin Control Switch
- 18 - Publication Number: 638085278