Scotsman NSE654 Скачать руководство пользователя страница 27 | Manualshive

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NSE654

January 2000

Page 27

ICE SWEEP

AUGER

EVAPORATOR

BREAKER

BEARING

WATER

SEAL

RETAININ

G RING

DRIP PAN

GASKET

WATER SHED

GEARMOTOR

ASSEMBLY

SEAL(S)

O-RING

CAP SCREW

O-RING

WATER

SHED

LIP SEAL

BREAKER

COVER

O-RING

AUGER STUD

REMOVAL AND REPLACEMENT: Evaporator

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Содержание NSE654

Страница 1: ...Page 8 COMPONENT DESCRIPTION Page 9 COMPONENT DESCRIPTION Control Box Page 10 ELECTRICAL SEQUENCE Page 11 OPERATION Water Page 12 OPERATION Refrigeration Page 13 TECHNICAL CHARACTERISTICS Page 14 MAIN...

Страница 2: ...you need before beginning Correct Ice Machine air or water cooled All kits legs and information required for the specific job NSE654 June 2002 Page 2 Note Minimum Circuit Ampacity is used to determin...

Страница 3: ...connection Water filters vary greatly in ability and function Install one that filters out suspended solids to a dimension of 5 microns or smaller The finer the filter the better but finer filters wil...

Страница 4: ...8 FPT condenser inlet at the back of the cabinet The water pressure to all lines must always be above 20 psig and below 80 psig Drains Air Cooled Models There are two 3 4 FPT drains at the back of th...

Страница 5: ...The machine requires a solid chassis to earth ground wire The ice maker should be connected to its own electrical circuit so it would be individually fused Voltage variation must remain within design...

Страница 6: ...Have all the plumbing connections been made and checked for leaks 4 Has the machine been leveled 5 Is there a minimum of 6 clearance at the back and left side of the machine for proper service access...

Страница 7: ...d warm water will be discharged into the drain 5 The unit should soon be making ice if desired the low side pressure can be checked it should be 34 psig or 4 psig The suction line temperature at the c...

Страница 8: ...chine off it there is none Ice Discharge Chute Directs the ice produced by the evaporator into the storage bin Ice Level Sensor An electronic eye it senses the presence of ice in the bottom of the ice...

Страница 9: ...being where the two seal faces meet Ice Sweep A plastic cap with fingers It revolves with the auger to sweep the ice into the ice chute Breaker Where the ice is compressed and much of the extra water...

Страница 10: ...motor with a built in time delay to clear the evaporator of ice when the unit turns off and for the compressor Low Pressure Cut Out Switch An automatic reset control that shuts off the ice machine whe...

Страница 11: ...hing the glass filler lever will repeat the dispense cycle Shut Down The compressor relay opens LED1 goes out The compressor contactor opens The compressor stops The auger motor stays on for 1 more mi...

Страница 12: ...he fitting at the rear goes to the water regulating valve then to the water cooled condenser and down the drain The storage bin has a separate drain tube and drain fitting NSE654 January 2000 Page 12...

Страница 13: ...volume of liquid refrigerant depending upon the temperature of the evaporator warmer evaporators get more refrigerant and colder evaporators get less At the evaporator the refrigerant enters an area...

Страница 14: ...ressure 200 250 PSIG air cooled 245 PSIG water cooled Typical Gearmotor Amp Draw 3 1 3 6 Typical Compressor Amp Draw 8 5 to 9 1 Typical Superheat 7 to 9 degrees Water Level Sensor Conductivity probe i...

Страница 15: ...ould be between 90 115 degrees F 8 Slowly pour the cleaning solution into the water reservoir until it is full Wait 15 minutes then switch the master switch to ON 9 As the ice maker begins to use wate...

Страница 16: ...se of the ice chute and wipe the inside clean as illustrated 2 The ice machine senses water level by a probe located in the water reservoir At least twice a year the probe should be removed from the r...

Страница 17: ...action of the bearing It should rotate smoothly To remove the breaker remove the lower ice chute then take out all four allen head cap screws and pull the breaker off the auger and evaporator If the...

Страница 18: ...porator 6 Remove 4 allen screws holding breaker to evaporator 7 Pull up to remove auger After the auger has been removed allow the auger to dry if the auger is not bright and shiny it must be cleaned...

Страница 19: ...open Auger not turning due to motor failure auger relay failure on circuit board or gears stripped Check drive train TXV restricted or not metering Check bulb temperature Lack of refrigerant Check for...

Страница 20: ...ater use Water cooled model water regulating valve not adjusted properly Adjust to 245 PSIG discharge pressure Reservoir float valve leaks thru Replace float valve or seat Water cooled model overcharg...

Страница 21: ...ressor contactor coil If it is on the ice sensors may be blocked Remove them and check for mineral scale Scotsman s test box can also be used to determine if the ice sensors or board are defective Usi...

Страница 22: ...9 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 in front of and behind...

Страница 23: ...ck for rust rough spots and damage a The bearing is pressed into the breaker to remove the bearing and replace it an arbor press is needed b Replace lower seals before installing new bearing in breake...

Страница 24: ...ft up remove breaker from evaporator e If the auger is stuck use a slide hammer type puller to pull on the auger at the threaded hole The size of that hole is 5 8 18 Inspect the auger the critical are...

Страница 25: ...tes with the auger must also be replaced Remove the old part from the auger and clean the mounting area 4 Place a small bead of food grade silastic sealant such as 732 RTV or Scotsman part number 19 0...

Страница 26: ...er in the liquid line 7 Evacuate the system until dehydrated then weigh in the nameplate charge Check for leaks 8 Install auger breaker breaker bearing assembly and ice discharge chute in reverse orde...

Страница 27: ...SWEEP AUGER EVAPORATOR BREAKER BEARING WATER SEAL RETAININ G RING DRIP PAN GASKET WATER SHED GEARMOTOR ASSEMBLY SEAL S O RING CAP SCREW O RING WATER SHED LIP SEAL BREAKER COVER O RING AUGER STUD REMO...

Страница 28: ...ngs 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 bearing...

Страница 29: ...r a restricting device such as a Charge Faster installed in it for metering liquid into the low side of the system 1 After a thorough evacuation shut off the manifold valves and switch off the vacuum...

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