Cornelius IMD Series Compressor Check Figure, Capacitor Check, Troubleshooting Gear Motors

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Countertop Icemaker IMD Series Installation Manual

OVERLOAD CHECK - FIGURE 10

4.Using a volt-ohm meter check the continuity across the overload, contacts #1 & #3. If none, wait for unit to cool down and try again. If still no continuity, the overload protector is defective and should be replaced.

COMPRESSOR CHECK - FIGURE 11

The resistance readings on the windings will be between 0.25 and 10.00 ohms, a meter capable of these low readings must be used.

5.Check between “C” & “R”. Replace compressor if there is no continuity as the run windings are open.

6.Check between “C” & “S”. Replace the compressor if there is no continuity as the start windings are open.

7.Check between “C” & “R”, or “S” and shell of the compressor. If there is continuity replace the com- pressor as the motor is grounded.

8.Check between screw terminal on the overload and “C” on the compressor. Check and repair the lead or connections if there is no continuity.

CAPACITOR CHECK

9.Check or replace start capacitor, disconnect bleed resistor before checking for shorted capacitor.

10.Check or replace run capacitor (if supplied) check or shorted capacitor or either terminal grounded to case.

TROUBLESHOOTING GEAR MOTORS

Basically, Gear motor problems can be narrowed down to three areas of checkout.

The Gearmotor will not run

1.No voltage to the transmission terminals - check external circuit.

2.Low voltage - check supply.

3.Problems in the gear motor electrical circuit. See FIGURE 12.

The Gearmotor Starts but Trips Repeatedly on the Overload Protector

1.Voltage - high or low voltage can cause the overload to trip.

2.High Gear motor amperage draw, see Specification Chart for ratings and Troubleshooting Guide.

The Motor Runs but Output Shaft does not Rotate

1.Replace defective gear motor.

CAUTION: Be sure unit is disconnected from the power source. Disconnect the transmission cable.

Overload Check

1.Allow motor to cool and reset overload if necessary.

2.Remove motor end bell and stator, if necessary.

3.Check terminals 1 and 3 on overload. No continuity replace overload. Use a volt-ohm meter. See FIGURE 10 and FIGURE 11.

NOTE: Gear motor and related components can be checked from Pin Connector. See FIGURE 12.

© 2004-2009, IMI Cornelius Inc.

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Publication Number: 638085277INS

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Contents Countertop Icemaker IMI Cornelius Inc Countertop Icemaker IMD Series Installation ManualTable of Contents Safety Controls Guide to Good Ice CO2 Carbon Dioxide Warning Shipping and Storage SafetySafety Instructions Safety TipsRLA Specification ChartDimension Drawings 30 LBS. IMD 300-30 and IMD Installation Instructions Drain Connection Initial Start UP, Checks & Adjustment InstructionsAuger Engagement Publication Number 638085277INS 2004-2009, IMI Cornelius Inc Monthly Guide to ServiceIcemaker Cleaning and Sanitizing Procedures MaintenanceSEMI-ANNUALLY Upper Bearing and Auger AssemblyWater Level Control Adjustment and Troubleshooting Refrigeration System AdjustmentsCondenser Modulating Valve Removal Condenser Modulating ValveGear Motor Shaft Seal Installation and Replacement FigureAuger & Extruding Head Removal Installation and Shaft Seal Replacement FigureUpper NUT and Bearings To Replace Bearings Troubleshooting CompressorElectrical Checkout Compressor Check Figure Troubleshooting Gear MotorsCapacitor Check Motor Check Safety Controls Check Icemaker Location Conditions First Guide to Good ICETroubleshooting Chart Icemaker not Operating IMD-15 Wiring Diagram Countertop Icemaker IMD Series Installation Manual Schematic IMD 302-30, IMD 602-30, and IMD IMI Cornelius Inc

IMD Series specifications

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