TO THE OWNER OR USER:The service manual you are reading is intended toprovide you, and the maintenance or servicetechnician, with the information needed to install,start up, clean, maintain and service this icesystem.

This Remote Low side unit is the freezer portion ofa commercial ice machine. It is designed to beconnected to the condensing section of arefrigeration system, specifically a supermarketR-404A system.

Table of ContentsFOR THE INSTALLER: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2

FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3

FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4

FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5

FOR THE INSTALLER: Final Check List Initial Start Up . . . . . . . . . . . . . . . . . . Page 6

COMPONENT IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7

COMPONENT DESCRIPTION: Control Box . . . . . . . . . . . . . . . . . . . . . . . . Page 8

COMPONENT DESCRIPTION: Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . Page 9

ELECTRICAL SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11

OPERATION: Refrigeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12

MAINTENANCE AND CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14

CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15

SERVICE DIAGNOSIS: Condition - No Ice Being Produced . . . . . . . . . . . . . . . . Page 16

REMOVAL AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18

REMOVAL AND REPLACEMENT: Bearing And Breaker . . . . . . . . . . . . . . . . . . Page 19

REMOVAL AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20

REMOVAL AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21

REMOVAL AND REPLACEMENT: Evaporator . . . . . . . . . . . . . . . . . . . . . . . Page 22

REMOVAL AND REPLACEMENT: Gearmotor . . . . . . . . . . . . . . . . . . . . . . . Page 23

CIRCUIT BOARD TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 24

Parts lists and wiring diagrams are in the center of this manual, printed on yellow paper.

This manual was printed on recycled paper. Keepit for future reference.

Note the Warning symbol where it appears. Itmarks a potential hazard.

Single System RL

January 1997Page 1

FOR THE INSTALLER: Specifications

The unit is designed to fit a variety of Scotsmanstorage bins. See sales literature for moreinformation.Installation Limitations: The remote low side isdesigned for indoor installations only. The machinemust also be in a controlled environment wherethe air temperature does not fall below 500F., orgo above 1000F.The water temperature must be between 400F.and 1000F.The electrical power supply must not drop below-5% of the lowest nameplate voltage or go above10% of the highest nameplate voltage.

SPECIFICATIONS:

Scotsman Ice Systems are designed andmanufactured with the highest regard for safetyand performance. They meet or exceed thestandards of U.L., N.S.F., and C.U.L.Scotsman assumes no liability or responsibility ofany kind for products manufactured by Scotsmanthat have been altered in any way, including theuse of any parts and/or other components notspecifically approved by Scotsman.Scotsman reserves the right to make designchanges and/or improvements at any time.Specifications and designs are subject to changewithout notice.

Model Cabinet Size System Refrigerant BTUH required Voltage Ice TypeFME1200RL 21"w x 27"h x 24"d R-404A 8,000 208-230 FlakerNME950RL 21"w x 27"h x 24"d R-404A 8,000 208-230 NuggetFM1202RL 21"w x 27"h x 24"d R-22 8,000 208-230 FlakerNM952RL 21"w x 27"h x 24"d R-22 8,000 208-230 NuggetFME1500RL 21"w x 27"h x 24"d R-404A 8,000 208-230 FlakerNME1250RL 21"w x 27"h x 24"d R-404A 8,000 208-230 Nugget

Single System RL

January 1997Page 2

FOR THE INSTALLERSelect the Location: The unit can only be installed indoorswithin the limitations described onpage 2.The ice machine will have to beconnected to the building’srefrigeration system, check to besure that the system has enoughextra capacity to handle a minimumof additional 8,000 BTU’s per hour @1100F. liquid line temperature(assume a 00F. evaporatortemperature).Storage Bin:Using a mechanical lift, install the icemachine onto the top of the storagebin.Fasten the ice machine to the binusing (4) 5/15-18 2.5" cap screws.Level the assembly by:a. Turning the leg levelers in or outon the standard legs.b. Use shims under the heavy dutylegs of the KLP4.Locate the Nameplate: Thenameplate is located on the backpanel of the machine, and containsthe electrical characteristicsparticular to the unit being installed.Refrigeration Installation:The skills of a refrigeration technicianare required to connect the icemachine to the buildings refrigerationsystem.Notes:

•Suction Line and Liquid LineStubs are at the back of thecabinet.

•1.5 ounces of the appropriaterefrigerant is in the system as a holding charge.

•Be sure there is enough BTU capacity.

•Be sure that the liquid connection is NOT inseries with another liquid line valve.

•Local Codes must be observed.

•A P-trap should be installed where there will bemore than 10’ of vertical rise in the suction line.

TYPICAL INSTALLATION: ALLOW ROOM FOR SERVICE ACCESS

FME1200RL

BX87 BINEXTENSION

B90 STORAGE BIN

Single System RL

January 1997Page 3

FOR THE ELECTRICIAN

CONFORM TO ALL APPLICABLE CODESElectrical Connections:Locate the nameplate for the currentrequirements, and then determine thewire size and type per the NationalElectric Code. The machine requires asolid chassis to earth ground wire.Refer to the wiring diagram. The icemachine should be connected to it’sown electrical circuit, and beindividually fused.Voltage, when the unit is under fullload, must remain within the limitationslisted on page 2. LOW VOLTAGE CAN CAUSEEQUIPMENT MALFUNCTIONAND/OR DAMAGEAll external wiring should conform tothe National, State, and local electricalcodes. Usually the services of alicensed electrician will be required.

DETAIL OF JUNCTION BOX

JUNCTIONBOX

POWER SUPPLY

Single System RL

January 1997Page 4

FOR THE PLUMBER

CONFORM TO ALL APPLICABLE CODESWater Supply:The recommended water supply line is 3/8" O.D.copper tubing, with a minimum operation pressureof 20 PSIG, and a maximum of 80 PSIG. Connectto cold water using the male flare connection atthe back of the machine. Install a shut off valve inan accessible space between the ice maker andthe water supply.

Drain System:All drains are of the gravity type, and must have aminimum of 1/4" fall per foot of horizontal run. Thedrains must be installed to conform to localplumbing codes. The use of a vent at the machineand at the bin will allow the system to drainproperly. Use only rigid tubing for drains; insulationof the bin drain is recommended.

SHUT OFFVALVE

FIELDSUPPLIED

WATER FILTER

3/8" MALE FLARE

3/4" FPT

VENT THIS DRAIN

WATER INLET

BIN DRAIN

FLOOR DRAIN

Single System RL

January 1997Page 5

FOR THE INSTALLER:Final Check List1. Is the unit installed where the air and watertemperatures are within and will remain within thelimitations for the unit?

2. Is there 6" clearance at the rear of the machinefor utility connections?

3. Has the water supply line be checked forpressures between 20 and 80?

4. Has the unit been leveled?

5. Has the shipping material been removed frominside the cabinet?

6. Have the electrical connections been made?

7. Have the drains been installed and checked forleaks?

8. Has the refrigeration supply been installed andchecked for leaks?

9. Has the bin and cabinet been wiped clean orsanitized?

10. Has the warranty registration card beenproperly filled out and mailed to Scotsman?

11. Has the owner been given the service manualand been instructed on how to maintain the icemaker?

13. Has the owner been given the name andtelephone number of the local Scotsman serviceagency?

Initial Start Up1. Remove the top and front panels.

2. Open the water valve, and observe that the twofloat reservoirs fill up with water and shut off.

3. Switch on the electrical power.

4. Open the hand valve (in the liquid line).

5. Open the ball valve (in the suction line).

6. Switch on the master switch, and observe:The liquid line valve opensThe gearmotor runsWithin a short time, that side of the machinebegins to make ice.Water flows from the water reservoir, and the float

drops, letting in more water.

7. When operating, the sight glass should remainfull, and the low side pressure will be about:RLE1202/952 - 25 PSIG + or - 2 PSIGRLE1200/950 - 36 PSIG + or - 2 PSIGRLE1500/1250 - 25 PSIG + or - 2 PSIGGearmotor amp draw should not exceed thenameplate rating.

8. Check the system very carefully for anyrefrigerant leaks, repair as needed.

Single System RL

November 1999Page 6

COMPONENT IDENTIFICATIONLiquid line valveThis valve operates to turn the ice making processon and off.When the ice level drops in the ice chute, the icelevel sensor will cause the circuit board to closethe liquid line relay, which energizes the liquid linevalve. The liquid line valve opens, and liquidrefrigerant flows to the thermostatic expansionvalve.Thermostatic Expansion ValveThe metering device of the system, the valvesenses the temperature of the suction line andvaries the amount of liquid refrigerant that passesthrough the valve into the evaporator, thusmaintaining a constant level of refrigeration. TXV’sare factory set. Do not adjust unnecessarily.DO NOT ADJUST THE TXV UNTIL THE EPRHAS BEEN SET.The superheat setting is 4-80F. Measure thetemperature of the evaporator outlet at the TXVbulb, and check the low side pressure at the EPRvalve. Convert the pressure to temperature (usinga temperature pressure chart) and subtract the

amount from the outlet temperature. The result isthe superheat. Use an electronic thermometer.EPR: Evaporator Pressure Regulator ValveThis valve maintains a constant pressure on itsinlet (evaporator) side regardless of the pressureon the outlet (suction) side. The EPR is factoryset, adjust only if needed. After adjusting, re-checkTXV superheat.EPR Settings:RLE1202/952: 25 PSIG + or - 2 PSIGRLE1200/950: 36 PSIG + or - 2 PSIGRLE1500/1250: 25 PSIG + or - 2 PSIGEvaporator:Where the water is frozen into ice crystals. As thewater cools, it begins to turn into ice, and theslowly turning auger lifts the ice, as it is beingmade, and forces it up and out of the “breaker” orspout where the extra water is compressed out ofthe ice. The ice then drops through the chute, intothe storage bin.

LIQUID LINEVALVE

THERMO VALVEEPR VALVE

Single System RL

November 1999Page 7

COMPONENT DESCRIPTION: Control BoxCircuit Board: Controlling the ice machinethrough sensors and relays. The sensors are: icelevel, and water level. The relays are for the gearmotor (with a built in time delay to clear theevaporator of ice when the unit turns off) and forthe liquid line valve.Transformer: Supplies low voltage to the circuitboard.On/Off Switch: Manual control for that side of themachine.

ON/OFF SWITCH

TRANSFORMER

CIRCUITBOARD

TERMINAL STRIP

Single System RL

January 1997Page 8

COMPONENT DESCRIPTION: EvaporatorEvaporator: A refrigerated vertical tube filledwater and containing a water seal and auger.Auger: A solid stainless steel double spiral auger,it pushes the ice crystals up to the top of theevaporator.Water Seal: A two part "face" seal, the top halfrotating with the auger, the bottom half stationary,the sealing action being where the two seal "faces"meet.Ice Sweep: A plastic cap with "fingers". It revolveswith the auger to "sweep" the ice into the ice chute.Divider: Where the ice is compressed and muchof the extra water is squeezed out of it before it isdischarged into the bin.

Motor: A split phase motor that drives the gearreducer.Bearing: As the ice is pushed up the evaporator,the auger is thrust down, and pressure from theauger thrust is taken up by this bearing.

BEARING ICE SWEEP

DIVIDER

EVAPORATOR

AUGER

WATERSEAL

MOTOR

Single System RL

January 1997Page 9

ELECTRICAL SEQUENCERefer the wiring diagram as needed.Each system is separateIf the machine is switched off at the master switch,but is otherwise ready to go, switching the masterswitch to on does the following:

•The bin empty light on the circuit board goes on

•There is a 15 second delay

•If there is enough water in the reservoir, thecircuit board will allow the machine to start up.

Start up consists of:•The liquid line relay and auger motor relay

become energized, connecting power to thewindings of the auger motor.

•The auger motor starts, and the centrifugalswitch closes, connecting power to the liquidline valve coil.

•The liquid line valve opens, and the refrigerantflows to the thermostatic expansion valve andinto the evaporator.

•As ice goes past the ice level sensors, the binempty light will stay on, and the machine willcontinue to run, unless the ice stays betweenthe sensors for more than 15 seconds (bin full).At that point, the bin empty light goes out, andthe machine shuts down.

Shut Down consists of:•The liquid line relay opens.

•The liquid line valve closes

•Ice making stops

•The auger motor is run by the circuit board for 2more minutes, clearing out ice in theevaporator, and then

•The auger motor relay opens, and the augermotor stops.

If the ice level sensor is clear (bin empty) for morethan 15 seconds, the machine will start up again.Another purpose of the circuit board is to turn themachine off if there is not enough water in themachine.

•When the water level in the reservoir fallsbelow the water level sensor, the machine will"shut down"

•When the water refills the reservoir, themachine will start up again.

Separate from the circuit board:•The master switch is the manual control for

each system, but it is not a service disconnect.

Single System RL

January 1997Page 10

OPERATIONWaterWater enters the machine through the 3/8" maleflare at the rear of the cabinet, goes to the waterreservoir which it enters through the float valve.

The water then goes out the bottom of thereservoir tank to the bottom of the evaporator.Reservoir overflow or evaporator condensation isrouted to the drain.

WATERINLET

RESERVOIR ICE CHUTE

WATER LEVEL

EVAPORATORWATER INLET

DRIP PAN DRAINWATER SCHEMATIC

Single System RL

January 1997Page 11

OPERATION: RefrigerationThe remote high side supplies highpressure liquid refrigerant to theliquid line connection on the icemachine. After the sight glass, thereis a liquid line leading to a liquid linevalve. When the ice level sensorcauses the circuit board to energizethe liquid line valve, the valveopens, allowing the liquid refrigerantto enter the expansion valve. Thethermostatic expansion valvemeters the liquid refrigerant into theevaporator, where it boils off(evaporates) and absorbs heat. Itthen moves through the ball valveand into the evaporator pressureregulator valve, or EPR. The EPRkeeps the evaporator pressureabove a predetermined point, eventhough the suction line pressure ofthe remote high side system mayvary. The refrigerant, now a lowpressure gas, moves into thesuction line of the remote high sidesystem.

LIQUID LINE

SIGHT GLASS

HAND VALVE

LIQUID LINEVALVE

THERMO VALVE

EVAPORATOR

BALL VALVE

EPR VALVE

SUCTION LINE

Single System RL

January 1997Page 12

MAINTENANCE AND CLEANING

A Scotsman Ice System represents a sizable investment of time and money in any company’s business. Inorder to receive the best return for that investment, it MUST receive periodic maintenance.

It is the USER’S RESPONSIBILITY to see that the unit is properly maintained. It is always preferable, andless costly in the long run, to avoid possible down time by keeping it clean; adjusting it as needed; and byreplacing worn parts before they can cause failure. The following is a list of recommended maintenancethat will help keep the machine running with a minimum of problems.

Maintenance and Cleaning should be scheduled at a minimum of twice per year.

ICE MAKING SYSTEM: In place cleaning1. Check and clean any water treatment devices,if any are installed.2. Pull out and remove the front panel.3. Move the ON-OFF switch to OFF.4. Remove all the ice from the storage bin.5. Remove the cover to the water reservoir andblock the float up.6. Drain the water reservoir and freezer assemblyusing the drain tube attached to the freezer waterinlet. Return the drain tube to its normal uprightposition and replace the end cap.7. Prepare the cleaning solution: Mix eightounces of Scotsman Ice Machine Cleaner withthree quarts of hot water. The water should bebetween 90-115 degrees F.

8. Slowly pour the cleaning solution into the waterreservoir until it is full. Wait 15 minutes, thenswitch the master switch to ON.9. As the ice maker begins to use water from thereservoir, continue to add more cleaning solutionto maintain a full reservoir.10. After all of the cleaning solution has beenadded to the reservoir, and the reservoir is nearlyempty, switch the master switch to OFF.11. After draining the reservoir, as in step 6, washand rinse the water reservoir.

12. Go thru steps 13-19 to sanitize the icemachine water system.13. Mix two gallons of sanitizer solution. Use anapproved sanitizer. A possible sanitizer solution may be obtained bymixing two gallons of warm (90-115oF.) potablewater with 1 ounce of household bleach.14. Slowly pout the sanitizer solution into the waterreservoir until the float rises, then switch themaster switch ON.15. As the ice machine uses water from thereservoir, continue to pour the sanitizer solutioninto the reservoir.16. After 1⁄2 of the sanitizer solution has beenadded to the reservoir, and the reservoir is nearlyempty, switch the master switch OFF.17. Drain the reservoir and thoroughly wash theinterior of the reservoir and cover with sanitizersolution. Be sure the drain hose is upright andcapped.18. Remove the block from the float in the waterreservoir.19. Switch the master switch to ON20. Continue ice making for at least 15 minutes, toflush out any cleaning solution.

DO NOT USE any ice produced from thecleaning solution. Be sure no ice remains inthe bin.

21. Remove all ice from the storage bin.22. Add warm water to the ice storage bin andthoroughly wash and rinse all surfaces within thebin.23. Sanitize the bin interior by washing the interiorof the bin with the balance of the sanitizer solution.24. Switch the master switch ON.

Scotsman Ice MachineCleaner contains acids.These compounds maycause burns.If swallowed, DO NOTinduce vomiting. Givelarge amounts of water ormilk. Call Physicianimmediately. In case ofexternal contact, flush withwater. Keep out of the reach ofchildren.

Single System RL

January 1997Page 13

MAINTENANCE

1. The bin control uses devices that sense light,therefore they must be kept clean enough so thatthey can "see". At least twice a year, remove thebin control sensors from the base of the ice chute,and wipe the inside clean, as illustrated.2. The ice machine senses water level by a probelocated in the water reservoir. At least twice ayear, the probe should be removed from thereservoir, and the tip wiped clean of mineralbuild-up.

3. The bearing in the breaker should also bechecked at least two times per year.Check the bearing by:

•pushing the bail clamp back and removing theice chute cover

•unscrewing the ice sweep

•unscrewing the breaker cover

•unscrewing the auger stud

Inspect the assembly, looking for wear. See Removal and Replacement to replace bearingor seals. Reverse to reassemble.4. Check and tighten all bolts and screws.

BREAKERCOVER

CLEAN THE ICELEVEL CONTROL

SENSORS

RESERVOIR

CLEAN THEWATER LEVEL

SENSOR/////////////////////////////CAUTION: THE

TIMP IS MADE OFGLASS

///////////////////////////////

SLIDE ICELEVEL

CONTROLS OUTOF CHUTE

ICE SWEEP

Electrical Shock HazardElectrical shock can causepersonal injury.Disconnect electricalpower before beginning.

Single System RL

January 1997Page 14

CLEANINGIn some installations the water supply to the icemaker will be so concentrated with dissolvedminerals, (such as calcium carbonate) that as iceis made, the evaporator and auger becomecoated with the minerals, requiring a morefrequent cleaning than twice per year. If in doubtabout the condition of the evaporator and auger,the auger can be removed so the parts can beinspected.Note: Water filters can filter out suspended solids,but not dissolved solids. "Soft" water may not bethe complete answer. Check with a watertreatment specialist regarding water treatment.

Switch off electrical power, and shut off thewater supply.For more information on removal of theseparts, see REMOVAL AND REPLACEMENT.1. To remove the auger, remove front and toppanel. If top panel cannot be removed, or if thereis less than 6" clearance over the top of themachine, the gearmotor/evaporator may be slidout for service access. See Removal AndReplacement.2. Push bail clamp back and remove ice chutecover.3. Unscrew and remove ice sweep.4. Loosen band clamp under ice chute, andremove ice chute from evaporator.5. Remove 4 allen head screws holding breaker toevaporator. 6. Pull up on breaker to remove auger. Allow the auger to dry, the stainless steel of theauger and evaporator must be clean and bright.Clean the auger and evaporator as required. DONOT HONE THE EVAPORATOR.7. Replace the water seal. 8. Reverse to reassemble.

DIVIDER, AUGERAND SLOTTED

COLLAR

ALLEN HEADSCREWS

Single System RL

January 1997Page 15

SERVICE DIAGNOSIS: Condition - No Ice Being Produced

STATUS: NOTHING OPERATES

A. Check: Voltage to the unit, restore it if there is none. Compare to the nameplate.

B. Check: The master switch, switch ON if off.

C. Check the water level in the reservoir. The machine will not run if there is not enough water in thereservoir. Restore/adjust water level.

STATUS: NOTHING OPERATES

D. Check: The gear motor, if it will not run, the liquid line valve will not open. If no power to it:

Check: The indicator lights on the circuit board, the bin empty light should be ON, the no water lightshould be OFF .

1. If the bin empty and no water lights are off, check the transformer. a. Transformer "load" side should have 12 to 15 volts. If not, check the "line" side. The line

side should have between 208-230 volts. If the line side has the correct voltage and the load side does not, replace the transformer.

2. If the transformer is good, and the bin empty light is OFF, check the ice level sensors.a. Remove sensors by sliding them sideways out of the ice chute. Visually inspect them, clean if needed.b. Look through the ice chute "eye" hole for something blocking the ice chute.c. If the unit still does not run, replace the ice level sensors.d. If the bin empty light is still OFF, check the circuit board. SEE LAST PAGE FOR TESTER

INFORMATION3. If the transformer is fine, and the "no water" light is ON, check the water level sensor.

a. Check the water level in the reservoir, restore if low. If the water level is ok:b. Remove the water level sensor from the reservoir and clean the tip if dirty.CAUTION: THE TIP IS MADE OF GLASSc. Replace the water level sensor. If the no water light is still on, check that the "water sen" plug is firmly plugged into the circuit board. d. If the no water light is still on, SEE LAST PAGE FOR TESTER INFORMATIONe. If after the above, the machine still will not run, replace the water level sensor

Single System RL

January 1997Page 16

STATUS: GEARMOTOR OPERATES, BUT NO ICE IS MADE

A. Check the liquid line valve relay.

The relay is on the circuit board, if it does not supply power to the liquid line valve, the valve will not open.1. Check for power at the valve coil, if none:

a. Check for power at the liquid line valve relay at the circuit board. If there is power at the relay, but none at the liquid line valve coil,

Check for an open wire between the relay and the valve.2. Check the valve coil. If the coil is open, replace the liquid line valve.3. Check the auger drive motor centrifugal switch. If, when the drive motor is running, contact 4 (black wire removed) has no power, and all of the above switches have beenchecked, replace the centrifugal switch, or the drive motor.4. If the liquid line valve relay on the circuit board has power on the NO contact, but not on the COM

contact, replace the circuit board.

Single System RL

January 1997Page 17

WATER RESERVOIR 1. Shut off the water supply to the ice maker.2. Remove front panel and reservoir cover.3. To remove float only, disconnect water inlettube, push in the tab behind the reservoir and pullvalve assembly out of the reservoir tank.4. To remove reservoir, disconnect water inletcompression fitting at reservoir inlet.5. Remove drain hose from reservoir.6. Remove evaporator inlet hose from reservoir.7. Remove mounting screws from reservoirbracket, and remove reservoir from ice maker. 8. Reverse to reassemble.

BIN CONTROLS (Ice Level Sensors)1. Disconnect electrical power.2. Remove front panel.3. Remove control box cover.4. Locate ice chute, at the base of the chute, infront of and behind it are two plastic bin controlmounts.5. Slide each bin control to the left, and in thecontrol box, disconnect the electrical leadsconnecting the bin control to the circuit board.6. Reverse to reassemble, be certain that the bincontrols are aligned so that the ice level sensorsare visible (centered) through the holes in the cubechute.

SLIDE BINCONTROLS IN AND OUT

REMOVAL AND REPLACEMENT

Float Valve

InternalPlunger

Single System RL

January 1997Page 18

REMOVAL AND REPLACEMENT: Bearing And BreakerNote: Removal of the auger, water seal,evaporator and gearmotor must begin at the top ofthe assembly.To Remove the Breaker Bearing Assembly:

1. Remove panels and disconnect electrical power.2. Push back bail clamp, remove insulationretaining strap and insulation, remove ice chutecover.3. Unscrew and remove ice sweep.4. Loosen band clamp under ice chute, lift up andremove ice chute.5. The breaker may be removed from the augerand evaporator without disturbing the auger. a. Unscrew breaker cover from breaker (left handthreads) b. Unscrew auger stud from top of auger. c. Unscrew 4 allen head cap screws holdingbreaker to evaporator.

d

. Lift up, and remove breaker/bearing assemblyfrom auger & evaporator.6. Service the bearing. Check for rust, rough spotsand damage. a. The bearing is pressed into the breaker, toremove the bearing and replace it an arbor pressis needed. b. Replace lower seals before installing newbearing in breaker.Note: seals must be pressed in with a tool pushingagainst the outer edge only, they will not install byhand.Replace parts as required. Re-grease bearing withScotsman part no. 19-0609-01 bearing grease.Replace top seal, and check the o-rings, replace ifcut or torn.7. Reverse to reassemble: specific tools andmaterials are required to install properly.a. Add food grade grease such as Scotsman partnumber 19-0569-01 to the seal area beforeinstalling on the auger.b. Check the seal to shaft areas for cuts, or roughspots: none are permitted.

Step 5- a Step 5-b Step 5-c and Step 6

ICE SWEEP

BREAKERCOVER

AUGERSTUD

BEARING

SEALS

SLOTTED COLLAR

DIVIDER

Electrical Shock HazardElectrical shock can causepersonal injury.Disconnect electricalpower before beginning.

Single System RL

January 1997Page 19

To Remove the Auger:Turn off the water to the machine, and unclip theevaporator drain hose, pull it down and drain theevaporator into the bin or a container.

1. The top panel must be removed.2. Remove ice chute cover.3. Unscrew ice sweep.4. Loosen band clamp and remove ice chute body.5. The auger and breaker/bearing may now beremoved as an assembly. a. Unscrew 4 allen head cap screws holdingbreaker to evaporator. b. Lift up on breaker and remove auger fromevaporator.

Note: If the auger is stuck, the breaker must beremoved from the auger. The breaker may be removed from the auger andevaporator without disturbing the auger. a. Use spanner wrench and unscrew breakercover from breaker (left hand threads) b. Unscrew auger stud from top of auger. c. Unscrew 4 allen head cap screws holdingbreaker to evaporator.

d. Lift up and remove breaker from evaporator.e. If the auger is stuck use a slide hammer typepuller to pull on the auger at the threaded hole.The size of that hole is 5/8"-18.Inspect the auger, the critical areas of the augerare: 1. The auger body. It should be clean andshining. Sometimes an auger will appear cleanwhen wet, but after it is dry it will be seen to bestained. Scrub the auger with ice machine cleanerand hot water.

Ice machine cleaner is an acid. Handle it withextreme care, keep out of the reach of children.

2. The water seal area. Because the auger hasbeen removed, the water seal will have to bereplaced. Remove the water seal top half from theauger, and inspect the auger for minerals clean asrequired.

REMOVAL AND REPLACEMENT

DIVIDERAND

AUGERASSEMBLY

SLIDE HAMMERPULLER

THREAD INTO THEAUGER HERE

Electrical Shock HazardElectrical shock can causepersonal injury.Disconnect electricalpower before beginning.

Single System RL

January 1997Page 20

To Remove the Water Seal: (Assuming all steps to remove the auger havebeen performed.)1. The gearmotor/evaporator assembly will have tobe exposed.2. Remove the 4 hex head cap screws holding theevaporator to the gearmotor assembly. Lift theevaporator up and off of the gearmotor.3. Remove the snap ring or wire retainer from thegrove under the water seal.4. Pull or drive out the lower half of the water seal.

To Replace the Water Seal:1. Lubricate the water seal with water, and pushthe water seal into the bottom of the evaporatorslightly past the grove for the snap ring.2. Replace the snap ring and pull the water sealdown against it.3. The part of the water seal that rotates with theauger must also be replaced. Remove the old partfrom the auger and clean the mounting area.4. Place a small bead of food grade silastic sealant(such as 732 RTV or Scotsman part number19-0529-01) on the area of the auger where thewater seal is to be mounted.5. Carefully push the water seal (rubber sideagainst the auger shoulder and the silastic.)

CAUTIONDo not get any silastic onto the face of the seal.

6. Allow the auger and seal to air dry until thesilastic is dry on the surface.7. If the original water seal was leaking, it would bea good idea to inspect the interior of the gearmotor.

REMOVAL AND REPLACEMENT

WATERSEAL

RETAININGRING

PLACE FOODGRADE SEALANT

HERE

Moving Parts Hazard.Moving parts can causepersonal injury.Disconnect electricalpower before beginning.

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To Replace the Evaporator:(Assuming all the steps for removal of the thrustbearing, breaker, auger, and water seal have beenperformed.)1. Shut the hand valves in the liquid and suctionlines to the evaporator being serviced; thendischarge the refrigerant.2. Unsweat the refrigerant connections: a) At the thermostatic expansion valve outlet.

CAUTIONHeat sink the TXV body when unsweating orresweating the adjacent tubing. b) At the suction line at the joint about 3" from theevaporator.3. Remove theevaporator.4. Unsweat the drierfrom the liquid line.5. After installing anew water seal in thenew evaporator (see"To Replace theWater Seal") sweat inthe new evaporator atthe old connections.6. Install an new drierin the liquid line.7. Evacuate thesystem untildehydrated, thenweigh in thenameplate charge.Check for leaks.8. Install auger,breaker, breakerbearing assembly,and ice dischargechute in reverse orderof disassembly. See"To ReassembleEvaporator and Auger"

To Reassemble the Evaporator and Auger1. After the gearmotor has been inspected, fastenthe evaporator to the gear motor, torque the boltsto 110 inch pounds.2. Lower the auger into the evaporator barrel,slightly turning it to match up with the drive end.Do Not Drop Into the Evaporator.3. Complete the reassembly by reversing thedisassembly for the breaker & thrust bearingassembly.

REMOVAL AND REPLACEMENT: Evaporator

ICE SWEEP

BEARING

AUGER

EVAPORATOR

DRIP PAN

DIVIDER/BREAKER

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To Remove and Repair the GearmotorAssembly:(Assuming that the procedures through removal ofthe water seal have been performed.)1. Remove the electrical wires from the gear drivemotor.2. Unscrew the 4 cap screws holding thegearmotor to the gearmotor plate.3. Remove the gearmotor from the ice maker. To Inspect the gearmotor. A) Remove the cap screws holding the gearmotorcase halves together and pry the two cases apart. B) To lift off the cover, lift up until you can feelinternal contact, then pull the cover towards theoutput gear end, and thenlift the cover (with drivemotor attached) up andaway from the gear motorcase.Note: The case coveroutput gear, bearings, andshaft are one pressedtogether assembly.Replace as a unit. C) Inspect the oil, gears,and bearings. If the oillevel and condition isacceptable, quickly checkthe gears and bearings.They are likely to be fine ifthe oil is.If there is evidence ofwater in the oil (rustybearings and gears; the oilhaving a creamy whiteappearance; oil level toohigh) carefully inspect thebearings and gears. If indoubt about the conditionof a part, replace it. The oilquantity is 16 fluid ounces,do not overfill.Note: The gears andbearings are available onlyas pressed together sets.

D) After replacing parts as required, (if any)reassemble the gearcase. The two smaller gearsand the oil should be in the lower case, the outputgear will be with the cover. As you lower the coveronto the lower case, cover will have to be movedcloser to the second gear after the output gear hascleared the second gear top bearing. E) After the case is together, and the locating pinsare secure in both ends, replace all cap screws.4. Bench test the gearmotor, check for oil leaks,noise, and amp draw.

SEAL

MOTOR

GEARCASE

BEARING

GASKET

REMOVAL AND REPLACEMENT: GearmotorSingle System RL

January 1997Page 23

These procedures require the machine to be connected to the power supply. The voltages of theelectronic circuit are very low, but HIGHER VOLTAGES ARE PRESENT IN THE UNIT. Do not touchanything but the tester while the unit is being checked out. Make all connections to the circuit board withthe ELECTRICAL POWER OFF.

INSTRUCTIONS FOR USING TESTER, (Optional, order part no. A33942-001)

(These instructions assume that the unit will not run, and prior investigation of electric power, controls,and mechanical parts indicates that the electronic circuit may be at fault.)

Note: All testing is done with the electrical poweron, the master switch on.1. Unplug ‘‘photo trans’’ and ‘‘LED’’ connectorsfrom the circuit board.2. Plug ‘‘photo trans’’ and ‘‘LED’’ connectors fromthe tester into the circuit board.3. Unplug "water sen" connector from the circuitboard.4. Plug "water sen" connector from Scotsmantester into the circuit board.Bin Control:

a. Move the ‘‘bin full’’ switch on the tester to Full.The light on the tester should be ON.If the light on the tester is not on, the circuit boardshould be replaced.

b. If the light on the tester IS on, move the ‘‘binfull’’ switch to Bin Empty. The light on the testershould go OFF, and the Bin Empty light on thecircuit board should go ON.

If the Bin Empty light is ON, wait 10-20 seconds forthe machine to start, if the machine starts, replacethe ice level sensors.If the Bin Empty light does not come ON, thecircuit board should be replaced.Water Level

a. Move ‘‘water’’ switch on tester to No Waterposition. The No Water light on the circuit boardshould go ON. If not, replace the circuit board.

b. Move the ‘‘water’’ switch on the tester to theWater position. The No Water light on the boardshould go OFF. If not replace the circuit board. Ifthe light does go off, replace the water levelsensor.If the Bin Empty light is ON, wait 10-20 seconds forthe machine to start. The machine should start.

CIRCUIT BOARD TESTING

LED

SWITCH TO"FULL"

PHOTO TRANS

LIGHT GOESON

SWITCH TO"NO WATER"

WATER SENS

LIGHT GOES ON

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