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COMPONENT DESCRIPTION

Bin Level Control

This electronic control uses sound waves to
measure the distance between the bottom of the
ice machine and the top of the ice in the bin. It is
designed to control the machine’s ice production to
maintain that distance.

The control is adjustable so that the ice machine
will maintain a certain height of ice. When set at
FULL it will not allow the machine to fill the bin any
closer to the ice machine than about 8", and it will
not work if the distance to the bottom of the bin is
greater than 8 feet.

Because it uses sound waves, a slight “ticking”
sound can be heard coming from the bottom of the
machine.

There are two parts to the control, the circuit
board, and the level control switch.

BIN ICE

LEVEL

SELECTOR

SWITCH

ICE/OFF/WASH SWITCH

SOUND WAVES

FULL

PARTIAL

THE USER CAN SELECT THE

AMOUNT OF ICE TO BE

MAINTAINED IN THE BIN.

CMS1402

September 1993

Page 13

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Содержание CMS1402

Страница 1: ...cations 2 For the Installer Location Assembly 3 Stacking 4 For the Electrician 5 For the Plumber 6 Final Check List 7 Initial Start Up 8 Freeze Cycle Operation 10 Harvest Cycle Operation 11 Component Description 12 Cleaning 15 Adjustments 17 System Specifications 19 Service Diagnosis 20 Removal and Replacement 23 Parts Lists and Wiring Diagrams are located in the center of this manual printed on y...

Страница 2: ...rs onto the following Scotsman ice storage bins BH1000 with KBT21 or BH1360 and it will stack with kits onto the following ice machines CMS1202 or CMS1402 use KSCMS48 The stacking kit includes gaskets and trim strip The normal finish for the machine is enamel sandalwood An optional stainless steel panel kit SPKCMS48 can be field installed It contains a stainless steel top left side panel an overla...

Страница 3: ...ough space to the left and back to service the machine Do NOT push the bin into postion instead lift it there Pushing a bin may damage the legs and leg mounts Level the bin in both the front to rear and side to side directions by adjusting the leg levelers Stacked units use non adjustable legs and must be leveled with shims Select a well ventilated location for air cooled models Note Air cooled mo...

Страница 4: ...stainless steel bracket from the kit must be attached to the top of the bottom machine before the units are stacked Place strips of gasket material from the stacking kit on the top edges of the bottom unit s freezing compartment Carefully lift the uncrated top unit onto the bottom one and align the two cabinets Use of a mechanical lift is recommended for this step At the back of the two icemakers ...

Страница 5: ... under starting conditions Low voltages can cause erratic operation and may be responsible for serious damage to the icemaker Electrical connections are made at the rear of the icemaker inside the junction box All external wiring should conform to the national state and local electrical code requirements Usually an electrical permit and services of a licensed electrician will be required ELECTRICA...

Страница 6: ...horizontal runs The drains to be installed to conform with the local plumbing code Install a vertical open vent on drain line high point to insure good draining The ideal drain receptacle is a trapped and vented floor drain Recommended bin drain is 5 8 inch O D copper tubing and should be vented and run separately Insulation for high humidity areas is recommended Water Cooled models require anothe...

Страница 7: ...made 8 Is the water supply line shut off valve installed and electrical wiring properly connected 9 Check all refrigerant lines and conduit lines to guard against vibration or rubbing and possible failure 10 Have the bin and cabinet been wiped clean 11 Has the Manufacturers Registration form been properly filled out Check for correct model and serial numbers from Serial nameplate then mail the com...

Страница 8: ...properly seated at the top of the evaporators and that water is flowing over all of the cube cells Note Some water may spray from the evaporators is normal when the machine is new The spray will stop after a few batches of ice 9 When the sump has filled move the compressor ON OFF toggle switch to the ON position 10 On air cooled models the fan motors will begin to blow warm air out the back of the...

Страница 9: ...ating the shaft until the opening between the cams is either increased or decreased and retightening the set screw More of an opening between the high parts of the two cams more harvest time An adjustment of the cube size control may be needed after the harvest time has been changed Check cube size again 14 Check Bin Ice Level Control With the icemaker in the harvest cycle place something solid di...

Страница 10: ...LOSED When the ice cubes are partially formed the cube size control sensing bulb attached to the suction line will CLOSE and connect power to the timer motor The timer then controls the remainder of the freezing cycle The timer will keep the icemaker operating in the freezing cycle for a selected length of time This will give the ice cubes time to fully form after which the timer will switch the i...

Страница 11: ...e by the warming effect of the hot gas condensing in each evaporator plate and the water cascading over the ice cubes The released ice cubes drop into the ice storage bin below At the end of the harvest cycle the timer cam will push in the microswitch actuator arm If there is no ice close to the bin level control s transducer a whole new cycle will begin If there is ice within 8 of the base of the...

Страница 12: ...h harvest cycle and prevents short cycling on the bin thermostat control Timer Timer Switch Assembly The timer cam is controlled by the cube size control The outer surface or large diameter lobe of the timer cam determines the timer cycle for finish freezing of the ice cubes while the inner surface or small diameter lobe determines the time cycle for the harvest cycle When the microswitch button i...

Страница 13: ... When set at FULL it will not allow the machine to fill the bin any closer to the ice machine than about 8 and it will not work if the distance to the bottom of the bin is greater than 8 feet Because it uses sound waves a slight ticking sound can be heard coming from the bottom of the machine There are two parts to the control the circuit board and the level control switch BIN ICE LEVEL SELECTOR S...

Страница 14: ...tes Gravity flow returns the unfrozen excess portion of water to the sump reservoir for recirculation Hot Gas Solenoid Valve The hot gas solenoid valve opens only during the harvest cycle to divert the hot discharge gas from the compressor by passing the condenser and capillary tube for direct flow to the evaporator plates to release ice cubes from the ice cube molds Fan Pressure Control Air Coole...

Страница 15: ...he reservoir drain cap and drain the cleaning solution from the sump Replace the drain cap 12 Rotate the shaft of the timer and switch assembly CLOCKWISE to the harvest position low part of the cam against microswitch Move the WASH OFF ICE switch to the ICE position to start the Harvest cycle If after completing this procedure one or more evaporator plates does not have a full flow of water for ea...

Страница 16: ...After all the scale has been removed rinse all of the surfaces inside the bin with clean potable water To sanitize the bin and ice machine interior Use an approved sanitizer and follow the directions and warnings of that sanitizer or use the following instructions for use of household bleach if it meets local codes 1 Mix a sanitizing solution of 1 ounce of household bleach to 2 gallons of water 2 ...

Страница 17: ...rect size see INITIAL START UP To produce LARGER sized ice cubes 1 Locate the cube size control on the front of the control box 2 Rotate the adjusting knob one eighth of a turn Clockwise 3 Observe size of ice cubes in next ice cube harvest and if needed repeat step 2 above until correct ice cube size is achieved To produce SMALLER sized ice cubes 1 Locate the cube size control on the front of the ...

Страница 18: ...cube size control Rotating the shaft of the timer cam clockwise will allow putting the machine into either the freezing cycle or harvest cycle as required in the cleaning instructions To Adjust The Timer Switch Assembly The length of the harvest cycle can be changed by loosening the set screw on the cam and then rotating the shaft so that the opening between the cams change More of an opening betw...

Страница 19: ...n Pressure in Harvest 60 70 PSIG 70o F air and 50o F water 70 80 PSIG 90o F air and 70o F water Typical Discharge Pressure in Harvest 100 110 PSIG 70o F air and 50o F water 120 130 PSIG 90o F air and 70o F water Typical Compressor Amp Draw Single phase Beginning freeze 13 14 End of Freeze 11 12 Harvest 16 17 Three phase Three phase amps vary between 8 and 12 High Pressure Cut Out High pressure saf...

Страница 20: ...harge Air intake temperature too high air cooled Reduce room temperature Sump covers out of position Re position sump covers Cubes too small Adjust cube size Cube size control stuck open Replace cube size control Runs makes no ice Pump problem or water leak in reservoir Check water system and pump Water inlet valve either lets in no water or leaks through Replace inlet water valve Low refrigerant ...

Страница 21: ...em Purge system evacuate and weigh in nameplate charge Poor air circulation or extreme hot location Relocate the cabinet or provide ventilation Overcharge of refrigerant Evacuate and weigh in nameplate charge Cube size too big unit runs out of water before harvest Adjust cube size control Inlet water valve leaks thru Replace valve Hot gas valve leaks thru At the end of the freeze cycle there shoul...

Страница 22: ...ircuit by attaching a jumper wire between bin thermostat posts on circuit board part no 12 1912 01 the circuit board with the timer on it Reconnect power If machine does not start go back to machine circuit If machine starts disconnect electrical power remove jumper wire and reconnect electrical power Then go to E E Transducer or ice level board assembly defective Replace transducer Set bin level ...

Страница 23: ...attachment for the left water distributor tube and notch also that the distributor manifold connections at the top center of each evaporator plate is snug against the top of the plate Cube Size Control To remove the cube size control 1 Remove front panel 2 Remove cover from control box 3 Trace capillary tube from the cube size control to the refrigerant suction line 4 Remove the coiled capillary t...

Страница 24: ... water supply to machine 2 Loosen and remove outlet water line from the inlet water solenoid valve assembly 3 Remove screws and pull the water solenoid valve out to gain access 4 Pull electrical cord from solenoid coil terminals 5 Remove inlet water fitting from the water solenoid valve To replace the inlet water valve assembly reverse the removal procedures Bin Ice Level Control Circuit Board 1 D...

Страница 25: ...mportant on an ice machine than is the high side If gauges must be used use very short hoses Minimal refrigerant discharged into the hoses equals minimal refrigerant discharged into the air If hi side pressure must be checked use a quick connect at the end of the discharge hose to minimize the release of refrigerant J B Industires part number A33000 works well Scotsman s schrader valve caps must b...

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