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Maintenance and Sanitation

The interior liner of the bin is in contact with a food
grade product: ice. The storage bin must be
cleaned and sanitized regularly to maintain a
sanitary environment. Scale that may form on the
plastic liner can be removed by scrubbing the
surface with a mixture of Scotsman Ice Machine
Scale Remover and hot water. Remove any scale
prior to cleaning.

To Remove Scale:

1. Mix a cleaning solution of 4 ounces of Scotsman
Ice Machine Scale Remover to 4 pints of hot
(95

0

F.-110

0

F.) water.

2. Using rubber gloves, dip a nylon scouring pad
into the cleaning solution and scrub the scale off
the liner.

3. After the scale has been removed, rinse all
surfaces inside the bin with clean, potable water.

To Sanitize the bin interior:

The hood must be removed from the storage bin
so that the joint between the two can be cleaned
and sanitized.

To remove the hood:

1. Open the storage bin door and locate the knobs
at the right and left inside wall.

2. Unscrew and remove the two knobs.

3. Pull the hood assembly and door straight out
from the ice machine. Note: the door may be
removed from the back of the hood when the hood
is off.

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 sanitizing solution of 1 ounce of household
bleach to 2 gallons of water.

2. Using clean rubber gloves and a clean cloth,
wipe all interior surfaces of ice storage bin, hood
and door with sanitizing solution. Be sure and wipe
the joint between the hood and bin with the
sanitizing solution. Use a clean brush to thoroughly
swab all interior surfaces with the sanitizing
solution.

3. Reassemble and allow to air dry.

Stainless Steel Components Inside Bin

The stainless steel parts in the bin also require
periodic cleaning. Chemicals in the water supply,
such as chlorine, cause brown stains to appear on
the surface of the stainless steel parts.

1. General Cleaning - staining is usually removed
by washing the parts with ordinary cleaning powder
such as Bon-Ami or Copper-Glo and water. After
cleaning, rinse with clear water.

2. Water treatment. The chlorine enters the
machine from the municipal water supply. It can be
removed from the water supply by using a charcoal
or activated carbon water filter to treat the water to
the ice machine. If staining is severe, filters of this
type are recommended.

Exterior Cabinet Cleaning:

The exterior cabinet may be cleaned by scrubbing
with soap and water. Do not use cleaners
containing petroleum products.

A nylon type brush may be used to scrub stubborn
deposits.

AFE424

April 2010

Page 13

Scotsman Ice Machine
Cleaner contains acids.
These compounds may
cause burns.

If swallowed, DO NOT
induce vomiting. Give
large amounts of water or
milk. Call Physician
immediately. In case of
external contact, flush
with water.
KEEP OUT OF THE
REACH OF CHILDREN.

Содержание AFE424

Страница 1: ...012 Page 1 Table of Contents Specifications Page 2 For The Installer Environmental Limitations Page 3 Installation Page 4 Installation Page 5 Installation Page 6 Removal of the Cabinet Page 7 Component Location Page 8 Electrical Sequence Page 9 Initial Start Up Page 10 Maintenance and Cleaning Page 11 Maintenance and Cleaning Page 12 Maintenance and Sanitation Page 13 Water Schematic Page 14 Refri...

Страница 2: ...ical Ice Type Condenser Type Typical Amps Maximum Fuse Refrigerant Charge R 134a AFE424A 1 33 x 241 4 x 24 115 60 1 Flake Air 9 15 15 oz AFE424W 1 same same same same same same 9 oz AFE424A 6 33 x 241 4 x 24 230 50 1 Flake Air 9 15 15 oz A scoop and legs 6 are included SERIAL NUMBER PLATE The nameplate is located on the back panel A serial number plate is located behind the right grill in front of...

Страница 3: ...of UL NSF and CUL Scotsman assumes no liability or responsibility of any kind for products manufactured by Scotsman that have been altered in any way including the use of any part and or other components not specifically approved by Scotsman Scotsman reserves the right to make design changes and or improvements at any time Specifications and design are subject to change without notice Airflow on a...

Страница 4: ...t finer filters may plug up sooner than course ones It may be necessary to add a course filter ahead of the fine filter to prolong filter life Have the water tested Either acidic water or alkaline water will cause corrosion Dissolved solids cannot be filtered out Check with a water treatment specialist regarding testing treatment and filters Note Deionized water is not recommended due to its poten...

Страница 5: ... Drain tube material must be rigid and meet local code Traps in the bin drain line without vents ahead of them will cause poor draining The bin drain must be vented if there is a long horizontal run 5 or more All drains are gravity and must have a minimum fall of 1 4 per foot of horizontal run Maintain the air gap required by local code between the end of the drain tubes and the building drain rec...

Страница 6: ... ice maker cabinet in a room where ambient temperatures are within the minimum and maximum temperatures specified 2 Has the water supply been connected 3 Is the water pressure adequate 4 Have the water connections been checked for water leaks 5 Have the drain connections been made 6 Have the drain connections been checked for leaks 7 Is the cabinet level 8 Is the ice machine plugged into an electr...

Страница 7: ...until it can be lifted up Caution the door may be free to come out the back of the hood when removed from the cabinet base 4 To remove the cabinet base the hood must be removed first 5 Remove 4 screws and the two grills at the front of the base 6 In the area exposed when the grills are removed are two knobs similar to those removed in step 2 Unscrew and remove the two knobs 7 Locate bin drain Loos...

Страница 8: ... Pressure Cut Out The pressure switch is designed to open and shut off the machine should the high side refrigeration pressure become too high usually as a result of not enough water through the water cooled condenser or a fan motor failure Air cooled is an automatic reset water cooled is a manual reset On Off switch This toggle switch shuts off the machine It is not a complete disconnect Bin Ther...

Страница 9: ...esigned to open should the water pressure to the machine drop too low The next control is the Bin Thermostat It is closed when there is no ice on the portion of the control inside the thermostat bracket It is open when there is ice on the portion of the control inside the thermostat bracket Closing of the bin thermostat begins the process of making ice because the line side power now goes to the c...

Страница 10: ...20 minutes Then pour clean water into the bin to melt the ice This will flush out most manufacturing or shipping materials that may have strayed into the water ice making system 7 Check the operation of the bin thermostat by placing ice over the sensing tube A properly operating bin thermostat will open when ice covers the sensing tube When the bin thermostat opens the compressor will stop but the...

Страница 11: ... cold water or if torn or so dirty it can t be cleaned replace with a new filter 5 Return the filter to its installed position 6 Replace the bracket removed in step 2 7 Replace the grill Do not operate the unit without the filter in place Note If the unit has been operated without the filter in place the fins of the condenser will become fouled with dirt and must be cleaned Scotsman recommends tha...

Страница 12: ...e float 18 Operate the unit for 15 more minutes then switch it off 19 Pour clean water into the bin to melt any ice produced during cleaning Sanitize Water System 1 Use a locally approved sanitizer or mix a sanitizing solution of 1 ounce of household bleach to 2 gallons of warm 95o F 115o F water 2 Disconnect drain hose from bin 3 Lift up on front of bin and rotate bin off of chassis 4 Remove cove...

Страница 13: ...of household bleach to 2 gallons of water 2 Using clean rubber gloves and a clean cloth wipe all interior surfaces of ice storage bin hood and door with sanitizing solution Be sure and wipe the joint between the hood and bin with the sanitizing solution Use a clean brush to thoroughly swab all interior surfaces with the sanitizing solution 3 Reassemble and allow to air dry Stainless Steel Componen...

Страница 14: ...e evaporator In the evaporator the water chills into ice crystals and is pushed up the evaporator by the auger At the top of the evaporator the ice is pressed against a restriction called a breaker and some of the water is squeezed out of the crystalline ice The flaked ice then flows through the chute into the bin AFE424 April 2010 Page 14 WATER SCHEMATIC WATER SAFETY SWITCH BIN DRAIN EVAPORATOR R...

Страница 15: ...ic expansion valve the liquid refrigerant passes from a high pressure zone to one of relatively low pressure and in the low pressure zone it evaporates The low pressure zone where the refrigerant evaporates is the evaporator When the refrigerant evaporates it absorbs heat from the metal parts of the evaporator and the water inside it From the evaporator the refrigerant flows back to the compressor...

Страница 16: ...d If open with no ice on it turn thermostat knob CCW if this does not close the thermostat replace it If the thermostat is closed and the unit will not start go to E E Check the water pressure to the unit The machine will not run if there is not enough water pressure Restore adjust water supply If the unit will not start with good water pressure go to F F Check that the Auger Delay contacts 3 2 ar...

Страница 17: ...eplace those items found defective STATUS MAKES ICE BUT ALSO MAKES EXCESSIVE NOISE A Check if the unit has been cleaned recently it will make extra noise if minerals have stained the auger and or evaporator Clean it if in doubt B Check the coupling by greasing it C Check the bearings for wear D Check the evaporator for wear There are vertical ice guide marks machined into the evaporator s interior...

Страница 18: ... 260 PSIG AC Typical Compressor Amp Draw Compressor amps should be about 6 7 Superheat 6 8o F Air Cooled Fan Motor 16 watt rating 1500 RPM CW Water Cooled Fan Motor 5 watt rating 1500 RPM CW Gearmotor 1 10 H P shaded pole motor 11 RPM output shaft speed Gearmotor amps will be about 2 8 3 2 Bin Thermostat 45o F cut in 35o F cut out minimum 61o F cut in 51o F cut out maximum Water Pressure Switch 10...

Страница 19: ...wo screws holding the control to the control box 5 Lift the control out of the control box and pull the two wires off the controls posts 6 Follow the capillary tube of the bin thermostat and remove it from the grommet in the back of the control box 7 Pull the end of the bin thermostat from the tube holder 8 Pull the capillary back through the grommet in the evaporator bracket until free Remove the...

Страница 20: ...vaporator and reservoir cover plate 3 Unscrew the bolts holding the gearmotor mounting plate to the ice machine chassis 4 Use a 1 2 box wrench to unscrew the three cap screws holding the evaporator to the gearmotor 5 Remove the motor and centrifugal switch electrical leads from their connections 6 Raise the evaporator assembly up enough that the output shaft clears the freezer adaptor 7 Remove the...

Страница 21: ...and remove two permagum plugs on back of evaporator 6 Remove two phillips screws from the back side of the evaporator 7 Obtain a 1 1 2 pipe thread tee 8 Remove the sealing cap 9 Install the Tee it will screw onto the breaker which has 1 1 2 NPT threads 10 Pull up on the Tee or insert a bar thru the Tee and pull up on it to remove the auger and top bearing retainer When the auger is free the bolt h...

Страница 22: ...he evaporator It must go in straight and must not be pushed in beyond 1 4 past the bottom of the evaporator 6 Install a new bottom bearing push it into the evaporator under the new water seal It must be pushed in straight but do not push it in past 1 8 from the bottom of the evaporator tube 7 Mount the adaptor stand to the bottom of the evaporator Hand tighten the three cap screws until the stand ...

Страница 23: ...p screws into gearcase cover and torque at 80 90 inch pounds 4 Bench test the gearmotor assembly Test for noise amp draw must not be in excess of ice maker nameplate for gearmotor and oil leaks Return the gearmotor assembly to the unit Be certain all mounting surfaces are clean and reassemble to the gearmotor mounting plate Then bolt back onto ice machine chassis AFE424 April 2010 Page 23 GEARMOTO...

Страница 24: ...n line tubes to the evaporator at the joints to the left of the evaporator 11 Raise the evaporator assembly up enough that the output shaft clears the freezer adaptor and remove the evaporator from the ice machine 12 After the evaporator has been removed from the ice machine the auger and bearings may be removed The fasteners auger and breaker cover should be saved for use in the new evaporator Ne...

Страница 25: ...d be broken each time with dry nitrogen not refrigerant Evacuation must be from both sides of the system Weigh in or measure in the nameplate charge Recharge into the high side Check for leaks with a high quality electronic leak detector Halide torches will not locate the very small leaks If an ice machine is to be discarded and still contains refrigerant Scotsman recommends that the refrigerant b...

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