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Section F - Ice Maker
91
Ice Maker Testing Procedures
Operating Cycle
Operation of the ice Maker, water refilling, and controlled ice storage, require proper functioning and timing of all components.
Consider the following:
• Has refrigerator been properly installed and connected to sources of electrical power and water?
• Has freezer compartment evaporator pulled down to temperature?
• Is the ice maker turned on?
• Have several ice making cycles been completed to remove all the air form the water lines?
• Do the ejector blades make two revolutions per cycle? Is ice stored on blades after harvest?
• Is the water solenoid wired in series with the mold heater?
Operating Cycle Illustrations - Manual
Cycle
To manually cycle ice maker:
1. Turn the On Off switch to ON
2. Press in on switch holding the spring loaded contact set closed, this will allow the motor to start.
3. Hold in on the switch for 10 seconds to allow hold switch contacts to close allowing the ice maker to continue through a cycle.
Operating Cycle Illustrations - Electrical
The following wiring diagrams illustrate the electrical operation of a rear mount ice maker.
1
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
• Thermostat open.
• Motor not rotating.
• Mold Heater off.
• Control Arm in the down position.
• Feeler Arm Switch closed C to NO.
• Hold Switch closed C to NC.
• Water Fill Switch open.
92
Section F - Ice Maker
2
2
2
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
• Thermostat closes.
• Motor starting.
• Mold starting to heat.
• Control Arm in the down position.
• Feeler Arm Switch closed C to NO.
• Hold Switch closed C to NC.
• Water Fill Switch open.
Hold Switch closed C to NC.
Water Fill Switch open.
3
3
3
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
• Thermostat closed.
• Motor starting to rotate.
Motor starting tp rotate.
• Mold starting to heat.
• Control Arm in the down position.
• Feeler Arm Switch closed C to NO.
• Hold Switch closed C to NC.
• Water Fill Switch open.
Water Fill Switch open.
4
4
4
Section F - Ice Maker
Ice Maker connected to electricity.
Mold temperature above 9 F.
Thermostat closed.
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
Mold Heating.
• Thermostat closed.
• Motor rotating.
• Mold heating.
• Control Arm swinging up.
• Feeler Arm Switch closed C to NC.
• Hold Switch closed C to NO.
• Water Fill Switch open.
Hold Switch closed C to NO.
Water Fill Switch open.
93
5
5
5
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
• Thermostat closed.
• Motor stalls as ejector hits ice in mold.
Thermostat closed.
• Mold heating.
• Control Arm swinging down.
• Feeler Arm Switch closed C to NC.
• Hold Switch closed C to NO.
• Water Fill Switch open.
Control Arm swinging down.
Feeler Arm Switch closed C to NC.
Hold Switch closed C to NO.
Water Fill Switch open.
94
Section F - Ice Maker
6
6
6
Ice Maker connected to electricity.
Mold temperature above 9 F.
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
• Thermostat closed.
• Motor starts to rotate as ice breaks loose.
• Mold heating.
• Control Arm is down.
• Feeler Arm Switch closed C to NO.
• Hold Switch closed C to NO.
• Water Fill Switch closed but shorted open by thermostat.
Hold Switch closed C to NO.
Water Fill Switch closed but shorted out by thermostat.
7
7
7
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
• Thermostat closed.
• Motor is rotating.
• Mold heating.
• Control Arm is down.
• Feeler Arm Switch closed C to NO.
• Hold Switch closed C to NC.
• Water Fill Switch open.
Motor is rotating.
Control Arm is down.
Feeler Arm Switch closed C to NO.
Hold Switch closed C to NC.
Water Fill Switch open.
8
8
8
Section F - Ice Maker
Ice Maker connected to electricity.
Mold temperature above 9 F.
Thermostat closed.
• Mold temperature above 9°F.
• Thermostat closed.
• Motor is rotating.
• Mold heating.
• Control Arm swinging up.
• Feeler Arm Switch closed C to NO.
Control Arm swinging up.
• Hold Switch closed C to NO.
• Water Fill Switch open.
Hold Switch closed C to NO.
Water Fill Switch open.
95
9
9
9
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
• Thermostat closed.
Mold temperature above 9 F.
• Motor is rotating.
• Mold heating.
Motor is rotating.
• Control Arm swinging up.
• Feeler Arm Switch closed C to NC.
• Hold Switch closed C to NO.
• Water Fill Switch open.
Mold Heating.
Control Arm swinging up.
Feeler Arm Switch closed C to NC.
Hold Switch closed C to NO.
Water Fill Switch open.
96
Section F - Ice Maker
10
• Ice Maker connected to electricity.
• Mold temperature above 40°F.
• Thermostat opens.
• Motor is rotating.
• Mold heater off.
• Control Arm swinging up.
• Feeler Arm Switch closed C to NC.
• Hold Switch closed C to NO.
• Water Fill Switch open.
11
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
• Thermostat open.
• Motor is rotating.
• Mold heater off.
• Control Arm swinging down.
• Feeler Arm Switch closed C to NO.
• Hold Switch closed C to NO.
• Water Fill Switch open.
12
12
12
Section F - Ice Maker
97
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
Ice Maker connected to electricity.
• Thermostat open.
• Motor is rotating.
• Mold heater is in series with water valve.
• Control Arm swinging down.
• Feeler Arm Switch closed C to NO.
• Hold Switch closed C to NO.
• Water Fill Switch closed.
Water Fill Switch closed.
13
13
13
• Ice Maker connected to electricity.
• Mold temperature above 9°F.
• Thermostat open.
• Motor is rotating.
• Mold heater off.
• Control Arm swinging down.
• Feeler Arm Switch closed C to NO.
• Hold Switch closed C to NO.
• Water Fill Switch open.
Water Fill Switch open.
599485595 August 2007
599485595 August 2007
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