Enodis CU0515 User Manual Download

Page: 9 / 17

Operation - Electrical Sequence

The following charts illustrate which switches and
components are ON or OFF during the two phases
of the icemaking cycle.

Refer to the wiring diagram for reference.

FREEZING CYCLE

Electrical components

OFF

Compressor

•

Water Pump

•

Fan Motor

•

Hot Gas Valve

•

Inlet Water Valve

•

Electrical Controls

OPEN

Evaporator Thermostat (contacts 3-4)

•

Evaporator Thermostat (contacts 3-2)

•

Bin Thermostat

•

HARVEST CYCLE

Electrical components

OFF

Compressor

•

Water Pump

•

Fan Motor (Air cooled only)

•

Hot Gas Valve

•

Inlet Water Valve

•

Electrical Controls

OPEN

Evaporator Thermostat (contacts 3-4)

•

Evaporator Thermostat (contacts 3-2)

•

Bin Thermostat

•

CU0515

February 2008

Page 9

Summary of Contents for CU0515

Page 1: ...d in the manner outlined in this manual CU0515 July 2007 Page 1 Table of Contents Specifications Page 2 General Information And Installation Page 3 Water Supply And Drain Connections Page 4 Final Check List Page 5 Operating Instructions Page 6 Operational Checks Page 7 Component Description Page 8 Operation Electrical Sequence Page 9 Freeze Cycle Page 10 Cleaning Switch Page 11 Service Diagnosis P...

Page 2: ...ht to make design changes and or improvements at any time Specifications and design are subject to change without notice UNPACKING AND INSPECTION 1 Call your authorized SCOTSMAN Distributor or Dealer for proper installation 2 Remove the front panel of the unit and inspect for any concealed damage Notify carrier of your claim for the concealed damage 3 Check that refrigerant lines do not rub agains...

Page 3: ...he unit is built into a cabinet with no side ventilation the ice production will be reduced by 20 of rated capacity restricted space of an inch or so on each side will cause a 10 reduction Six inches of space to the left and right will allow the unit to operate satisfactorily The daily ice making capacity is directly related to the condenser air inlet temperature water temperature conditions of th...

Page 4: ...to the 3 4 GAS BSPP thread water inlet fitting at the back of the ice maker An adapter is available the part numbers are F733219 03 and F640134 00 Water Drain The recommended drain tube is a plastic or flexible tube with 18 mm 3 4 I D which runs to an open trapped and vented drain Note Although soft easily kinked vinyl tubing is not recommended for a drain a short length of ID vinyl tubing is requ...

Page 5: ...ines and conduit lines to guard against vibrations and possible failure 8 Have the bolts holding the compressor down been checked to ensure that the compressor is snugly fitted onto the mounting pads 9 Have the bin liner and cabinet been wiped clean 10 Has the owner user been given the User Manual and been instructed on the importance of periodic maintenance checks 11 Has the Manufacturer s regist...

Page 6: ...itch Unit will start up in charging cycle mode During this cycle the components energized are Water Inlet Solenoid Valve Hot Gas Solenoid Valve Water Pump Fan Motor D Operate the unit in the water charging cycle for about three four minutes till water flows out from the drain hose then move the cleaning switch to the operation position NOTE During the charging cycle the water inlet solenoid valve ...

Page 7: ...urplus overflows through the overflow drain tube J Check the size and shape of the ice cubes just released Right size must have a small depression about 3 16 in their crown If not wait for the second defrost harvest cycle before performing any adjustment K If required adjust the length of the freezing cycle by turning the knob of the cube size control or evaporator thermostat located in front of t...

Page 8: ...ost cycle During the defrost cycle the hot gas valve coil is activated so to attract the hot gas valve piston in order to give way to the hot gas discharged from compressor to flow directly into the evaporator serpentine to defrost the formed ice cubes Bin Thermostat The bin thermostat control body is located in the front of control box behind the front louvered panel The thermostat sensing tube i...

Page 9: ...ressor Water Pump Fan Motor Hot Gas Valve Inlet Water Valve Electrical Controls CLOSE OPEN Evaporator Thermostat contacts 3 4 Evaporator Thermostat contacts 3 2 Bin Thermostat HARVEST CYCLE Electrical components ON OFF Compressor Water Pump Fan Motor Air cooled only Hot Gas Valve Inlet Water Valve Electrical Controls CLOSE OPEN Evaporator Thermostat contacts 3 4 Evaporator Thermostat contacts 3 2 ...

Page 10: ... the unit switches back into a freeze mode Cycle Times Listed information is for new clean machines in a stabilized situation Some unit to unit and cycle to cycle variation is normal 90 F 70 F 32 C 21 C Freezing time 20 to 21 minutes Harvest time 1 15 to 1 30 minutes Total time 21 30 to 23 minutes Weight 1 lb Water Drain 1 qt water 70 F 50 F 21 C 15 C Freezing time 17 30 to 18 minutes Harvest time...

Page 11: ...5V 12V Relay Dip Switch with two keys Jumper for the set up of the Cut OFF Alarm condensing temperature 70oC 158oF jumper OUT for air cooled green four wire connector for power IN and OUT Red socket for the Water Level Sensor future use Black socket for the Condenser Sensor and White socket for the Red Alarm Re Set Push Button The main function of this PC Board is to switch the machine OFF when th...

Page 12: ...eaner air or stiff brush DO NOT use wire brush Air circulation blocked Allow sufficient air space all around unit Compressor starting device loose wires Check for loose wires in starting device Cubes too small Cube size control set improperly Check and adjust for proper operation Capillary tube partially restricted Recover charge add new gas drier after evacuating system with vacuum pump Moisture ...

Page 13: ...re too high See incorrect discharge pressure Clogged air filter Clean or replace Poor harvest Restriction in incoming water line Check water valve strainer and flow control If necessary enlarge the flow control orifice Too short defrost time Check temperature control Replace if necessary Cube size control set for too large Re set cube size control Water inlet valve not opening Valve coil with open...

Page 14: ...n few seconds after the removal of the ice from bin thermostat bulb the ice machine restarts NOTE Within minutes after the ice is removed from the bulb holder tube the sensing bulb inside the tube will warm up and cause the ice machine to restart This control is factory set and should not be reset until testing is performed 6 Check for refrigerant leaks NOTE Standard equipped with an air condenser...

Page 15: ... 15 Remove evaporator cover Pour hot water over the entire surface of the evaporator section Return evaporator cover to its original position 16 Pour hot water into the bin to melt any ice produced during cleaning and to clean out the drain Wipe the interior of the bin with mild soap and hot water rinse with cold water To sanitize mix a locally approved sanitizer solution and perform steps 17 31 A...

Page 16: ... drain cap from the bottom of the reservoir allow all the water to drain out Return the drain cap and clamp to their original positions 29 Thoroughly spray or wipe the interior of the ice storage bin bottom of the evaporator cover and the spray platform with the sanitizing solution 30 Completely immerse the curtain in the sanitizing solution 31 Return the evaporator cover and curtain to their orig...

Page 17: ...SCOTSMAN ICE SYSTEMS 775 Corporate Woods Parkway Vernon Hills IL 60061 800 533 6006 www scotsman ice com 17 3188 01 ...

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