Scotsman NDE750 Скачать руководство пользователя страница 14 | Manualshive

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OPERATION: Ice Vending

When the ice dispensing glass filler lever is
pushed, an electrical circuit is made to the ice
chute door solenoid causing the ice chute door to
open. At the same time power is connected to the
portion control module in the control box. That
module will energize the agitator drive motor for a
certain length of time, depending upon the setting
of the portion control knob.
The dispensing takes place when the agitator
sweeps the ice through the ice dispensing chute:
ice will continue to
discharge out this chute as
long as the agitator is
turning. It stops when the
agitator stops.

ICE DISCHARGE CHUTE

STORAGE BIN

AGITATOR

AGITATOR

DRIVE MOTOR

VEND SWITCH

GLASS FILLER

LEVER

SINK

DOOR

SOLENOID

ICE CHUTE

DOOR

ICE CHUTE

NDE750

December 1993

Page 14

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Содержание NDE750

Страница 1: ...HE INSTALLER Specifications 2 FOR THE INSTALLER 3 FOR THE PLUMBER 4 FOR THE ELECTRICIAN 5 FOR THE INSTALLER Final Check List 6 INITIAL START UP 7 COMPONENT DESCRIPTION 8 COMPONENT DESCRIPTION Control...

Страница 2: ...facturing plant it takes in a raw material water and turns it into a food product ice The purity of the water is very important in obtaining pure ice and in maximizing product life General recommendat...

Страница 3: ...rs so that the stand does not rock Counter Top or Machine Stand Installation The base of the icemaker dispenser must be sealed to the object it rests upon Food grade silastic sealant such as Scotsman...

Страница 4: ...valve to control it It is connected to a 3 8 FPT condenser inlet at the back of the cabinet The water pressure to all lines must always be above 20 psig and below 120 psig Drains Air Cooled Models The...

Страница 5: ...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 limi...

Страница 6: ...checked and compared to nameplate requirements 3 Have all of the plumbing connections been made and checked for leaks 4 Has the machine been leveled 5 Is there a minimum of 6 inches of clearance at th...

Страница 7: ...side pressure may be checked it should be 38 PSIG or 4 PSIG The air cooled discharge pressure will depend upon air and water temperatures but should be between 200 PSIG and 300 PSIG Water cooled disch...

Страница 8: ...rator Condenser Air or water cooled where the heat removed in ice making is discharged Ice Storage Bin Assembly A plastic lined insulated cylinder that receives stores and dispenses the ice Fresh ice...

Страница 9: ...of ice when the unit turns off and for the compressor On Off Switch Manual control for the machine Transformer Supplies low voltage to the circuit board Potential Relay The compressor start relay Por...

Страница 10: ...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 is squeezed out...

Страница 11: ...otor relay opens and the auger motor stops If the ice level sensor is clear bin empty for more than 15 seconds the machine will start up again Another purpose of the circuit board is to turn the machi...

Страница 12: ...ater regulating valve then to the water cooled condenser and down the drain The water dispensing station adds an additional water circuit When the water station glass filler lever is pushed a switch c...

Страница 13: ...epending upon the temperature of the evaporator warmer evaporators get more refrigerant and colder evaporators get less At the evaporator the refrigerant enters an area of relatively low pressure wher...

Страница 14: ...the agitator drive motor for a certain length of time depending upon the setting of the portion control knob The dispensing takes place when the agitator sweeps the ice through the ice dispensing chut...

Страница 15: ...5 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 water from the reservoir...

Страница 16: ...l sensors from the ice chute and wipe them clean 3 The bearing in the breaker should also be checked at least two times per year A Check the bearing by removing the ice chute cover unscrewing the ice...

Страница 17: ...ing drain hose 3 Remove bail clamp from over ice chute cover and remove cover 4 Unscrew and remove ice sweep 5 Remove ice chute from evaporator 6 Remove 4 allen screws holding breaker to evaporator 7...

Страница 18: ...charge Check for a Thermostatic Expansion Valve that does not open if defective replace it Replace the drier evacuate and weigh in the nameplate charge E Check the high pressure cut out if closed go t...

Страница 19: ...The bin full light on the tester should be ON if not replace the circuit board If the bin full light on the tester is ON move the tester switch to bin empty the light on the tester should go OFF and t...

Страница 20: ...contactor 2 Check the contactor coil If the coil is open replace the contactor 3 Check the auger drive motor centrifugal switch If when the drive motor is running contact 4 black wire removed has no p...

Страница 21: ...er leaks replace the water seal if found to be leaking 3 Check the low side pressure normal is about 38 psig If low assume a refrigerant leak locate repair and recharge If no leak the TXV may be restr...

Страница 22: ...voltage and the agitator motor output shaft does not turn replace the agitator gear motor assembly C Check that the ice dispensing door opens when the glass filler lever is pushed If not check the ven...

Страница 23: ...el sensor probe 8 Remove mounting screws from reservoir bracket and remove reservoir from icemaker 9 Reverse to reassemble BIN CONTROLS Ice Level Sensors 1 Disconnect electrical power 2 Remove front p...

Страница 24: ...ring Check 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 i...

Страница 25: ...ews holding breaker to evaporator d Lift 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...

Страница 26: ...grove for the snap ring 2 Replace the snap ring and pull the water seal down against it 3 The part of the water seal that rotates with the auger must also be replaced Remove the old part from the aug...

Страница 27: ...an new drier 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 re...

Страница 28: ...he 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 c...

Страница 29: ...ction equipment is required to locate small refrigerant leaks Usually a leak detector capable of detecting a Halogenated refrigerant or HFC 134A will work Check with the leak detector manufacturer if...

Страница 30: ...epaired This system has a critical charge it must be recharged with the correct amount of refrigerant as listed on the nameplate of the ice machine or performance will suffer Anytime the refrigeration...

Страница 31: ...ug photo trans and LED connectors from the circuit board 2 Plug photo trans and LED connectors from the tester into the circuit board a Move the bin full switch on the tester to Full The light on the...

Страница 32: ...ard should go ON If not replace the circuit board b Move the water switch on the tester to the Water position The No Water light on the board should go OFF If not replace the circuit board If the ligh...

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