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Service Fault Diagnosis

Type

Cause

Indicator

Action to Take

Bin Full

Storage bin is full of ice.

‘Full’ indicator light is on.

None 

Enjoy your ice!

Water Supply

Error

Water is not being supplied on time.

‘No Water’ indicator light is on.

Check water supply.

Check water reservoir is full.

Check operation of water level sensor.

Check operation of water dump valve.

Check water dump valve for leaks.

Evaporator Temp

Too High Error

Evaporator is not cold enough.

‘Temp’ indicator light flashes.

Check refrigerant charge (too low).

Check that compressor is running.

Check TXV operation.

Check S/L thermistor

Evaporator Temp

Too Low Error

Evaporator inlet temperature is too cold.

‘Temp’ & ‘Motor’ indicators flash 

simultaneously every 2 seconds.

Unplug & plug back in after 1 hour.

Check TXV operation.
Check L/L thermistor.

Check liquid-line solenoid valve.

Check motor/gear box operation.

Low Condenser

Temp Error

Ambient temp is lower than 33.8°F.

‘Temp’ indicator flashes every

4 seconds.

Raise ambient temperature above 

50°F.

High Condenser

Temp Error

Ambient temp is too high or condenser fails to cool

below 167°F.

‘Temp’ indicator light is on.

Lower ambient temperature.

Check air filter/condenser.

Check fan motor/blade.

Check fan cycle switch.

Check L/L thermistor

Locked Motor

Error

Motor is locked by foreign objects

‘Motor’ indicator light is on.

Unplug & plug back in after 1 hour.

Check motor/gearbox operation.

Check auger/agitator.

Check for ice jam.

Check for scale buildup.

S/L Thermistor

Error

Suction-line thermistor malfunctions.

‘Temp’ indicator light is on & ‘Motor’ 

indicator flashes.

Replace S/L thermistor.

L/L Thermistor

Error

Liquid-line thermistor malfunctions.

‘Temp’ indicator flashes & “Motor’ 

indicator light is on.

Replace L/L thermistor.

High Pressure

Error

Condenser fails to cool.

‘Temp’ and ‘Motor’ indicators lights 

are both on simultaneously.

Check refrigerant charge (too high).

Check air filter/condenser.

Check fan motor/blade.

Check high pressure switch.

Check fan cycling switch.

20

Содержание IM-770-AN

Страница 1: ...IM 770 AN F INSTALL SERVICE MANUAL...

Страница 2: ...Ice Machine Specs 2...

Страница 3: ...Ice Machine Specs 3...

Страница 4: ...lease pay close attention to the packaging for any damage to the crating If there appears to be any exterior damage please either note the damaged on the delivery bill of lading OR refuse it Failure t...

Страница 5: ...e Required water pressure is 20 psi minimum and 80 psi maximum This unit is designed to work with water temperatures of 50 F 90 F 7 Is the unit installed in an area with sufficient ventilation at the...

Страница 6: ...will begin to enter the ice storage bin after 3 minutes of the compressor condenser fan being energized The size of your ice storage bin plus the ambient water temps will Determine how long it will ta...

Страница 7: ...liminate improper operation Additionally it is recommended to use the supplied seismic brackets to secure the ice machine and bin together An air deflector is included with self contained air cooled m...

Страница 8: ...on Note Sump remains full of water Dump valve does not energize and drain so the sump remains full of water when the machine is off Shut Down Sequence Via Bin Switch Same as the previous shut down seq...

Страница 9: ...IM 0770 LED Functions 9...

Страница 10: ...ditional 60 seconds to protect the motor from any remaining water or ice that may be in the cylinder If the dump valve is energized and the machine is draining the ice machine will stop all operation...

Страница 11: ...11 IM 0770 Drop Zone IM 0770 AN AF Drop Zone Chart A 11 3 B 11 4 C 22 D 25 4 A B C D Ice Outlet is 5 4 ID...

Страница 12: ...IM 0770 Wiring Diagram 12...

Страница 13: ...IM 0770 PCB 13 Main Power Heater Cond Fan Comp Bypass Valve Dump Valve Motor Tachometer LED Display Float Switch Bin Switch Mode Switch HPS S L Thermistor L L Thermistor Water Valve Gear Motor D S...

Страница 14: ...IM 0770 Key Features Urethane insulated sealed to prevent moisture penetration which can rupture the refrigeration serpentine Non vented gear box to prevent lubrication breakdown 14...

Страница 15: ...der Heads are Interchangeable Carbon bearing is pressed inside of extruder head No grease or maintenance to prevent major mechanical breakdowns Simply check extruder bearing replace if required Extrud...

Страница 16: ...of clearance is required to service and remove auger on the IM 0770 Pin cut spring insertion in bottom of flight Spline cut fits into reverse spline coupling on gear box shaft which ensures no imbala...

Страница 17: ...eration continues The water only fills to the lower part 1 Open 0 Close The current operation continues No definition Physically impossible 1 Open 1 Open OFF Water tank Full Water valve operates separ...

Страница 18: ...ne insulation the lower housing assembly and or the gear box and destroy those parts When removing bolts new o rings and or new bolts with o rings should be used If bolts are not tightened properly or...

Страница 19: ...evaporator barrel for leaks Drains have been enlarged to prevent overflow scale buildup on critical parts Use caution during reassembly to ensure all new bolts are cross tightened evenly Note Evapora...

Страница 20: ...p Error Ambient temp is lower than 33 8 F Temp indicator flashes every 4 seconds Raise ambient temperature above 50 F High Condenser Temp Error Ambient temp is too high or condenser fails to cool belo...

Страница 21: ...IM 0770 P T Chart Cycle Times 21...

Страница 22: ...IM 0770 Parts Breakout 22...

Страница 23: ...23 IM 0770 Parts Breakout...

Страница 24: ...24 IM 0770 Parts Breakout...

Страница 25: ...25 IM 0770 Parts Breakout...

Страница 26: ...26 IM 0770 Parts Breakout...

Страница 27: ...IM 0770 Parts Breakout 27...

Страница 28: ...IM 0770 Parts Breakout 28...

Страница 29: ...IM 0770 Parts Breakout 29...

Страница 30: ...Water Dump Solenoid Water Inlet Solenoid Water Supply Drain Lines Wear Cracks to the Mechanical Seal Auger Bearing Clearances Wear Cracks to the Housing Assy Spline Coupling Wear Cracks to O Rings In...

Страница 31: ...ce the mechanical seal Replace the housing o ring Inspect the coupling for wear cracks etc replace if necessary Lift coupling from gearbox and inspect for wear cracks etc Preventative Maintenance Tech...

Страница 32: ...crews from the ice chute assembly and lift up to remove it 7 Pour the pre mixed cleaning solution in through the extruding head until the evaporator and water reservoir are full The solution will over...

Страница 33: ...en the water supply valve and set the power switch to ICE When the gear motor starts running turn the power switch to DRAIN to drain the water for 5 minutes 15 Set the power switch to ICE and make ice...

Страница 34: ...nstall lack of cleaning inadequate water treatment or airborne slime Bacteria Citryne by Systems IV for all machines with pH over 7 0 Carbon filtration removes chlorine If there is slime or growth ins...

Страница 35: ...ater is between 6 and 8 5 The pH value of water is used to determine whether water is hard or soft Pure water has a pH of 7 and water lower than 7 pH is considered acidic Citryne is for all ice makers...

Страница 36: ...THANK YOU 1 15 2022...

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