Scotsman Ice FME804, NME454, NME654, FME504 manual Removal and Replacement Gear Reducer and Motor

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NME454, 654 & FME504, 804

REMOVAL AND REPLACEMENT: Gear Reducer and Motor

Electrical Shock Hazard.

Electrical shock can cause personal injury. Disconnect electrical power before beginning.

To Check the Motor:

1.Remove wires from terminals 1 and 2.

2.Use an ohmmeter to check for continuity. If there is none, replace the motor only. If there is continuity, but the motor will not start, check the motor's start switch.

3.Remove motor end bell or motor stator. With ohmmeter wires attached to 1 and 2, move centrifugal switch actuator up and down to simulate motor speed. If the ohmmeter does not show any change, replace the switch or motor. If the ohmmeter shows an open

circuit, replace the switch or

COVER &

motor.

OUTPUT GEAR

To Remove and Repair the Gear

ASSEMBLY

 

and Motor Assembly:

 

(Assuming that the procedures through removal of the water seal have been performed.)

1.Remove the electrical wires from the gear drive motor.

2.Unscrew the 4 cap screws holding the gearmotor to the base of the machine.

3.Remove the gearmotor from the unit.

Bench test the gearmotor, check for oil leaks, noise, and amp draw.

To Inspect the gearmotor.

A)Remove the cap screws holding the gearmotor case halves together and pry the two cases apart.

B)To lift off the cover, lift up until you can feel internal contact, then pull the cover towards the output gear end, and then lift the cover (with drive motor attached) up and away from the gear motor case.

Note: The gear case cover, output gear, bearings and output shaft are a pressed together assembly. Replace as a unit.

C)Inspect the oil, gears, and bearings. If the oil level and condition is acceptable, quickly check the

gears and bearings. They are likely to be fine if the oil is.

If there is evidence of water in the oil (rusty bearings and gears; the oil having a creamy white appearance; oil level too high) carefully inspect the bearings and gears. If in doubt about the condition of a part, replace it. The oil quantity is 14 fluid ounces, do not overfill.

Note: The gears and bearings are available only as pressed together sets.

D)After replacing parts as required, (if any) reassemble the gearcase. The two smaller gears and the oil should be in the

lower case, the output gear will be with the

cover. As you lower

CENTRIFUGAL

the cover onto the lowerSWITCH case, the cover will have to

be moved closer to the

WATER SHED

ROTOR

BEARING

second gear after the output gear has cleared the second gear top

bearing.

E)After the case is together, and the locating pins are secure in

both ends, replace all cap screws. Bench test the gearmotor, check for oil leaks, noise, and amp draw.

GEAR CASE

January 2007

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Contents NME454, 654 & FME504 IntroductionNME654 Dispenser Applications For the InstallerInstallation Limitations Fuse Charge Ampacity Size 404ASample BIN and Machine Combinations Location Water LimitationsFor the Installer Location Airflow NoticeFor the Plumber Use only ¾ rigid tubingFor the Electrician Final Check List There are no Adjustments to MAKE, so replace the panels Initial Start UPLow Pressure Cut Out Switch Component DescriptionNME454, 654 & FME504 On/Off mode Switch Manual control for Control BOX ComponentsAutoSentry Control Board Shut Down Electrical SequenceStart Up Control Board Protection DevicesOperation Water Water Level The correct water level should beRefrigeration Schematic Operation RefrigerationOperation Performance Cleaning & Sanitizing ICE Making System In place cleaningSanitizing Sensor Maintenance AIR Cooled Maintenance Clean the air cooled condenserHazardous Moving Parts Bearing Maintenance OffAt least two times per year Auger Maintenance Service Diagnosis Symptom Possible Cause Probable CorrectionSymptom Possible Cause Probable Correction Control System Diagnostics Removal and Replacement Bin Controls BIN Controls Ice Level SensorsRemoval and Replacement Bearing And Breaker To Remove the Breaker Bearing AssemblyAuger is Removal and Replacement AugerTo Remove the Auger Stuck,Removal and Replacement Water Seal To Remove the Water SealTo Replace the Water Seal Removal and Replacement Evaporator Heat sink the TXV body when unsweating orResweating the adjacent tubing Removal and Replacement Gear Reducer and Motor Refrigeration System Service Access Valves To useInstructions for Liquid Charging R-404A What to do Before Calling for Service If the machine is off, not making ice
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FME504, FME804, NME654, NME454 specifications

Scotsman Ice Systems is known for its high-quality ice machines, and models such as the NME454, NME654, FME804, and FME504 are no exceptions. Designed with both performance and efficiency in mind, these machines cater to various business needs, from restaurants to convenience stores.

The NME454 and NME654 units are renowned for their compact design, making them ideal for establishments with limited space. Despite their smaller size, these machines do not compromise on ice production capacity. The NME454 can produce up to 430 pounds of ice per day, while the NME654 boasts an impressive output of up to 600 pounds. Both models utilize Scotsman's signature innovative technology to ensure consistent ice quality, primarily in the form of nugget ice, which is favored for its ability to cool beverages quickly.

In contrast, the FME804 and FME504 are larger-capacity machines that cater to high-volume requirements. The FME804 can produce around 800 pounds of ice daily, making it suitable for busy restaurants or bars. The FME504, while slightly smaller, still offers impressive production capabilities of up to 500 pounds per day. These machines incorporate advanced features such as the AquaArmor protective layer, which inhibits bacterial growth, ensuring that the ice produced is not only abundant but also hygienic.

All four models utilize an innovative air-cooled design that enhances energy efficiency and reduces operational costs. The easy-to-use control panel allows for straightforward operation, and maintenance is streamlined thanks to easily accessible components. Additionally, the quiet operation of the machines ensures that they can be used in front-of-house areas without distracting customers.

In terms of construction, Scotsman ice machines are built to last with corrosion-resistant materials, ensuring longevity in demanding environments. With simple installation processes and compatibility with various environments, including indoor and outdoor settings, these units provide adaptability for any business scenario.

Overall, Scotsman’s NME454, NME654, FME804, and FME504 ice machines combine robust performance with innovative technology, catering efficiently to diverse ice production needs while maintaining high standards of hygiene and reliability.
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