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Section 3

Operation

Part Number 040003628 08/13

3-5

Ice Making Sequence of Operation

INITIAL START-UP

1.

Water Inlet and Pressure Equalization

Turn the toggle switch to”ON” positon,the water fill valve 

and harvest valve are energized, 210 seconds later, the 

water fill valve is de-energized. 20seconds after the 

harvest valve solenoid is energized, the compressor is 

energized. 300seconds after the compressor is 

energized, the harvest valve solenoid is de-energized, 

the water pumpand the fan motor are 

energized,machine goes into freeze cycle. 

2.

Freeze Cycle

The pump sprays water into the inverted cups. The 

water freezes layer by layer, until an ice cube forms in 

each cup.
When the”water temperature”is equal to or less than 2 

 

for more than 5 seconds, control will read

the” liquid line temperature” and dip switch setting , get 

the” freeze postpone time” and “fan shut off time”.Board 

will shut the Fan before the end of the freeze cycle to 

assist harvest. When the ” freeze postpone time” has 

elapsed, the harvest cycle is initiated.

3.

Harvest Cycle

The compressor continues to operate and the water 

pump is de-energized. The hot gas valve energizes, 

allowing hot gas to enter and warm the evaporator. The 

water valve is also energized, aiding with harvest, as 

well as filling up the sump with fresh water for a new 

freeze cycle.
at the point of 2 minutes to freeze end , board will read 

the ” liquid line temperature”again and calculate the 

“harvest time”
The ice falls from the cups and is directed into the bin by 

the ice chute. The harvest cycle continues until the 

harvest time has elapsed,then machine goes into a new 

freeze cycle

4.

Automatic Shut-Off

When the storage bin is full, the ice will come in contact 

with the bin thermostat which is located inside the bin. 

The machine will stop after approximately 45seconds of 

continuous ice contact with the bin thermostat probe.
The ice machine remains off until a 3 minutes delay has 

elapsed and enough ice has been removed from the 

storage bin to allow the ice to fall clear of the bin 

thermostat probe. As the ice clears the probe, the bin 

thermostat warms up and the machine starts another 

freeze cycle.

Q_UnderCounter_uc.book  Page 5  Sunday, January 26, 2014  3:48 PM

Summary of Contents for UG018

Page 1: ...t Number 040002628 8 13 SOTTO Ice Machines UG Models Installation Operation and Maintenance Manual This manual is updated as new information and models are released Visit our website for the latest manual ...

Page 2: ... e Warning st atement before pr oceeding and wor k carefully Caution Text in a Ca ution b ox ale rts yo u to a s ituation in which you could damage the equipment Be sure to read the Caution statement before proceeding and work carefully Important Text in an Important box pr ovides yo u with information that may help you perform a procedure more ef ficiently Disr egarding this information will not ...

Page 3: ...ns 2 1 Location of Ice Machine 2 2 Leveling the Ice Machine 2 2 Electrical Service 2 3 VOLTAGE 2 3 FUSE CIRCUIT BREAKER 2 3 TOTAL CIRCUIT AMPACITY 2 3 Water Service Drains 2 4 WATER SUPPLY 2 4 WATER INLET LINES 2 4 DRAIN CONNECTIONS 2 4 WATER SUPPLY AND DRAIN LINE SIZING CONNECTIONS 2 4 Installation Checklist 2 6 Before Starting the Ice Machine 2 6 Section 3 Operation Component Identification 3 1 ...

Page 4: ...13 Section 4 Maintenance General 4 1 Cleaning the Condenser 4 2 Interior Cleaning and Sanitizing 4 3 GENERAL 4 3 CLEANING SANITIZING PROCEDURE 4 3 Exterior Cleaning 4 4 Removal from Service Winterization 4 4 Section 5 Before Calling for Service Checklist 5 1 ...

Page 5: ...the necessary installation procedures for you Warning PERSONAL INJURY POTENTIAL Do not operate equipment that has been misused abused neglected damaged or altered modified from that of original manufactured specifications Self Contained Air Cooled Self Contained Water Cooled UG018A N A UG020A N A UG030A UG030W UG040A N A UG050A UG050W UG065A N A UG080A N A Ice Machine Model 018 Model 18 020 Model ...

Page 6: ... required when requesting information from your local Manitowoc distributor or Manitowoc Ice Inc The model and serial number are listed on the OWNER WARRANTY REGISTRATION CARD They are also listed on the MODEL SERIAL NUMBER DECAL affixed to the ice machine remote condenser and storage bin Model Serial Number Location Model ______________________ Serial Number ______________________ Model Serial Nu...

Page 7: ...owoc Ice Inc 3 Damage caused by improper installation of the ice machine electrical supply water supply or drainage or damage caused by floods storms or other acts of God 4 Premium labor rates due to holidays overtime etc travel time flat rate service call charges mileage and miscellaneous tools and material charges not listed on the payment schedule Additional labor charges resulting from the ina...

Page 8: ...General Information Section 1 1 4 Part Number 040003628 08 13 PAGE INTENTIONALLY LEFT BLANK ...

Page 9: ...ctions General These instructions are provided to assist the qualified installer Ice Machine Dimensions Model L W H UG018 mm 343 450 635 UG020 mm 450 475 650 UG030 mm 450 475 650 UG040 mm 550 550 800 UG050 mm 550 550 800 UG065 mm 700 600 902 UG080 mm 700 600 902 ...

Page 10: ... chart below for clearance recommendations NOTE The ice machine may be built into a cabinet There is no minimum clearance requirement for the top or left and right sides of the ice machine The listed values are recommended for efficient operation and servicing only Leveling the Ice Machine Levelers are included with all ice machine Legs are an available option 1 Screw the legs or levelers into the...

Page 11: ...with a strain relief near the terminal strip 3 Verify wiring is contained in the electrical wiring box Warning All wiring must conform to local state and national codes The ice machine must be grounded in accordance with national and local electrical codes Warning RISK OF ELECTRICAL SHOCK FOR H ARD WIRED WIRED WITHOUT A PLUG MACHINE IT MUST BE PR OPERLY GROUNDED AND CONNECTED T O THE FIELD WIRING ...

Page 12: ... inch drop of run for each meter 3 feet and must not create traps The floor drain must be large enough to accommodate drainage from all drains Run separate bin and water cooled condenser drain lines Insulate them to prevent condensation by temperature WATER SUPPLY AND DRAIN LINE SIZING CONNECTIONS Water Inlet Hose Supplied With Machine 3 4 Female Pipe Thread 2 meters long Drain Hose Supplied With ...

Page 13: ...ction 2 Installation Instructions Part Number 040003628 08 13 2 5 WATER SUPPLY AND DRAIN LINE CONNECTIONS Water Cooled Condenser Inlet Water Cooled Condenser Outlet Ice Making Water Inlet Drain Electrical ...

Page 14: ...he rating on the nameplate Are all components installed Has the ice machine been installed where ambient temperatures will remain in the range of 10 43 C 50 110 F Has the ice machine been installed where the incoming water temperature will remain in the range of 10 32 2 C 50 90 F Is there a separate drain line for the water cooled condenser Are all electrical leads free from contact with refrigera...

Page 15: ...40003628 08 13 3 1 Section 3 Operation Component Identification Water Curtain Water Sump Trough Air Cooled Condenser Evaporator Ice Chute Spray Bar Spray Nozzles Toggle Switch Control board On Off Wash Toggle Switch ...

Page 16: ... Slide top cover back to disengage the three pins from the front panel BIN DOOR Allows access to the storage bin 1 Remove top cover 2 Slide door up until rear pins align with slot in door tracks 3 Lift rear door pins out and slide door up until front door pins align with slot 4 Lift door out of door track Remove Two Screws Slide Cover Back To Remove Align Door Pins With Track Slots Then Lift Door ...

Page 17: ...UTE The ice chute is positioned over the spray nozzles and allows the ice to easily fall into the bin It must be firmly positioned over the Spray Bar Assembly with the front edge inside the water trough or the spray nozzles will not be aligned with the spray holes and spray water will fall into bin 1 Grab protruding spray holes on one end and lift up 2 Pivot ice chute and remove 3 To re install ic...

Page 18: ...ray bar components when necessary 4 To re install spray bar position water inlet tubing on inlet ports and squeeze clips until tight 5 Reposition assembly on water trough seat Nozzles and inserts can be removed for cleaning by unscrewing nozzles Inserts are located inside the spray bar ports The spray bar also disassembles for easy cleaning SUMP DRAIN OVERFLOW TUBE The sump drain overflow tube is ...

Page 19: ...tpone time has elapsed the harvest cycle is initiated 3 Harvest Cycle The compressor continues to operate and the water pump is de energized The hot gas valve energizes allowing hot gas to enter and warm the evaporator The water valve is also energized aiding with harvest as well as filling up the sump with fresh water for a new freeze cycle at the point of 2 minutes to freeze end board will read ...

Page 20: ...bes should have a small dimple in the center 2 Cycle times vary according to surrounding air and water inlet temperatures 3 If cubes are not full large dimple raise the dip switch level to increase cube size Allow ice machine to complete three cycles then check cube 4 If cubes are too full no dimple lower the dip switch level to decrease cube size Allow ice machine to operate three complete cycles...

Page 21: ... end user and service technician should perform and the frequency These figures are the minimum required If the Ice Machine is supplied with hard water more frequent evaporator cleaning should be performed If the condenser air filter is totally blocked after one week more frequent cleaning is recommended X End User S Service Company Caution If you d o not understand the pr ocedures o r the safety ...

Page 22: ...een the fins If dirt remains A Blow compressed air through the condenser fins Be careful not to bend the fan blades B If dirt or grease remains between fins consult your service representative WATER COOLED CONDENSER AND WATER REGULATING VALVE The water cooled condenser and water regulating valve may require cleaning due to scale build up Low ice production high water consumption and high operating...

Page 23: ...water sump Allow all water to drain from the sump Replace drain plug Set toggle switch to WASH and circulate for 12minutes Step 9 Wait until the cleaning cycle 12 minutes is complete then place the toggle switch in the OFF position Remove water curtain ice chute water sump over flow tube Drain water from sump and replace tube Step 10 Mix 60 ml of sanitizer with 12 l of water in a plastic or stainl...

Page 24: ...ervice switch 2 Turn off the water supply 3 Drain the water from the water sump and water pump by disconnecting the water pump tubing 4 Disconnect and drain the incoming ice making water line and disconnect the tubing from the water inlet valve outlet and allow water to drain 5 Blow compressed air in the drain opening and water valve outlet hose then reattach 6 Make sure water is not trapped in an...

Page 25: ... line thermistor faulty replace the thermistor Control board problem Call for service Freeze cycle long low production Dirty condenser Clean condenser Water temperature too high Connect to a cold water supply verify check valves in faucets and other equipment work properly Refrigeration problem Call for service Shallow incomplete or white ice cubes Ice machine is dirty Clean sanitize the ice machi...

Page 26: ...Before Calling for Service Section 5 5 2 Part Number 040003628 08 13 PAGE INTENTIONALLY LEFT BLANK ...

Page 27: ...PAGE INTENTIONALLY LEFT BLANK ...

Page 28: ...inuing product improvement may necessitate change of specifications without notice Part Number 040003628 8 13 Every new piece of Manitowoc Foodservice equipment comes with KitchenCare and you choose the level of service that meets your operational needs from one restaurant to multiple locations StarCare Warranty lifetime service certified OEM parts global parts inventory performance audited ExtraC...

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