AFE424 - Scotsman Ice Systems
Contents
1. Scotsman nstallation and User s Manual for Flaked Ice Machine with Storage Bin Model AFE424 Air or Water Cooled AFE424 Introduction To the owner or user This service manual is This unit in serviceable in place the ice storage bin intended to provide you and the maintenance or and hood may be removed from the chassis to service technician with the information needed to allow service access without removing the ice install start up clean maintain and repair this machine from its installed location The product refrigeration system uses R 134a as the The AFE424 is an ice machine that produces refrigerant flaked ice and stores it in a insulated bin It automatically maintains the level of ice by turning on when the ice level falls and switches off when it is full Table of Contents Specifications d ee ee tee ee ee eee eee ee eee ee ee ee ee Se a Se Page 2 For The Installer Environmental Limitations 00 Page 3 Installation n Page 4 Installation Water and Drain e e Page 5 Installation o e a a a a a a a a a a a a a a a a a a a a a e a a a e a Page 6 Removal of the Cabinet Sees amp eS he eM ee Be me ee e Se ee ee et a Page T Initial Start Up ECC ey a a ce e e A a a Page 8 Maintenance and Cleaning Leda Sew R ea eee ee ee ee ee eS Page 9 Maintenance and Cleaning ag RA io SS E GR Sl ro GS o A a a E DE E Page 10 Maintenance and Sanitation E E amp oS we Ee Se ee eo2. between the end of the drain tubes and the building drain receptacle Drain tubing should be insulated to prevent condensation from forming on the tubing 3 Water cooled models have a separate 3 8 FPT fitting for condenser water inlet Do not filter water to this connection The condenser drain is 1 2 FPT and does not need a vent POTABLE WATER INLET WATER COOLED PLUMBING POTABLE i WATER INLET ai A CONDENSER Qs INLET al he oF ee oh ee ee eee a ee ae ae Ny x teus Page 5 AFE424 Installation For The Electrician This is a cord connected unit and must be on a separate single phase power supply Check the nameplate for the correct voltage The maximum fuse size for this circuit should be 15 amps per the nameplate use fuses or HACR circuit breakers Follow All Local Codes THIS UNIT MUST BE GROUNDED Do not use extension cords and do not disable or by pass ground plug on electrical plug After Utility Connections 1 Level the cabinet use the leg levelers on the end of the legs to adjust the cabinet height Legs should have been installed when the unit was unpacked 2 Wash the bin and hood If desired the interior of the bin could be sanitized 3 Locate the scoop wash it and have it available for use when needed Final Check List 1 Is the ice maker cabinet in a room where 12 Has the owner user been given the name and ambient temperatures are within the minimum and tele
3. F 100 F Water Pressure 20 PSI 80 PSI Voltage 60 Hz 103 5 126 5 Voltage 50 Hz 207 253 i E ee N gi AIR OUT AIR IN Operating the ice machine outside of the above Airflow on air cooled models limitations or outdoors is potentially damaging to Intake through the right grill the machine and it is misuse of the machine This may void the warranty Exhaust from the left grill Do not install where this air flow is blocked Scotsman Ice Systems are designed and manufactured with the highest regard for safety The AFE424 has a removable cabinet When and performance They meet or exceed the installed the machine should have some extra standards of UL NSF and other agencies clearance 1 8 on the left and right sides so that ae os the cabinet may be easily removed when the Scotsman assumes no liability or responsibility of machine is in place 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 March 2010 Page 3 AFE424 Installation Water The water supply for this ice machine has been in contact with many materials since it fell from the sky as rain All rain is slightly acidic and
4. ee i 4 Page 11 Maintenance Bearing ee ee Fe e ee te wee we ewe a we oe EE ae Se oe oe Se ok Page 12 What to Do Before Calling for Service gt sa ere ee tae AR ee ds ss sm ss Page 13 Keep this manual for reference March 2010 Page 1 AFE424 Specifications COND WATER INLET WATER COOLED ONLY 3 8 IN N P T 1 0 CM SUMP WATER INLET 3 8 IN FLARE 1 0 CM COND WATER OUTLET WATER COOLED ONLY 1 2 N P T SUMP DRAIN l 3 4 3 4 N P T 1 9 CM BIN DRIAN 3 4 N P T 1 9 CM 14 25 11 29 IN IN gog 28 7 CM LI The nameplate is located qu on the back panel e A serial number plate is SERIAL located behind the right e E E NUMBER grill in front of the control o S PLATE box on the base Scotsman The unit is equipped with an electrical power cord but should only be plugged into a circuit dedicated to the ice machine Model Number Dimensions Basic Ice Condenser Typical Maximum w o legs Electrical Type Type Amps Fuse HxWxD AFE424A 1 33 x 244 x 24 115 60 1 Flake Air 9 15 AFE424W 1 same same same same same same AFE424A 6 33 x 24Y x 24 230 50 1 Flake Air 9 19 A scoop and legs 6 are included March 2010 Page 2 AFE424 For The Installer Environmental Limitations The ice machine must be installed indoors in a controlled environment Minimum Maximum Air Temp 50 F 100 F Water Temp 40
5. tends to dissolve the materials it comes in contact with During water s journey to the ice machine it has flowed over and through the ground been picked up by a municipal or private pump forced through a series of pipes of differing construction and may have been treated by the municipality providing the water The water supplied to this ice machine will then contain a variety of substances that will likely show up as solids during the ice making process These solids are similar to those found when water is boiled out of a saucepan Only the water boils away and the minerals that were in the water solidify in the pan During ice making the water is frozen into ice and many of the minerals stay behind in the ice machine water system After time the minerals will have to be dissolved by ice machine cleaner then flushed away during the cleaning process An ice machine is a food manufacturing plant it takes a raw material in this case water and transforms it into a food product ice The purity of the water is very important in obtaining pure ice and in maximizing product life The water to the ice machine should be filtered Water filters vary greatly in ability and function Install one that filters out suspended solids The finer the filter the better but 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 Eithe
6. the above to reassemble a ay i gt A 1 ni a k Ag F i x SE toa i siii P i Thrust Washer and Bearing ap Thrust Bearing Surface Note When done be sure sealing cap threads are sealed and the cap is on tight March 2010 Page 12 AFE424 What to Do Before Calling for Service If the machine is off not making ice 1 Check the water supply to the ice machine The machine is designed to shut off if there is no water to it Check the water filters if there are any for the restriction 2 Check the power supply to the machine Reset the breaker if it is tripped If it trips again call for service 3 Check the temperature of the room the machine is in if below 50 F the machine may not restart until the air temperature warms up Open the bin door to allow room air to enter the bin and warm up the thermostat 4 If both water and power have been checked and are available try switching the power Off for an hour then reconnect power The machine should restart If this procedure restarts the machine service should be called the next time the machine stops March 2010 Page 13 Scotsman SCOTSMAN ICE SYSTEMS 775 Corporate Woods Parkway Vernon Hills IL 60061 800 533 6006 www scotsman ice com 17 3311 01
7. 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 March 2010 Page 11 AFE424 Maintenance Bearing The bearings and water seal area should be checked once per year Bearing Inspection 1 Remove right front grill shut machine off Moving Parts Hazard Moving parts can cause personal injury Shut machine off before beginning to service components 2 Remove the hood and door 3 Remove stainless steel cover plate 4 Unscrew and remove bearing sealing cap Sealing Cap 5 Check the top bearing The top of the thrust washer will be visible It should be clean as seen in the photo 6 Remove the bolt and thrust washer and check the bearing surface for adequate grease Grease should just cover the bearing surface Wipe out any contaminated grease Add new grease Scotsman part number 19 0662 02 If water or rust is present replace the bearing 7 Check the bottom of the evaporator for water leaks Some condensation is normal however visible water may be a sign of a water seal leak 8 Reverse all of
8. e 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 Loosen hose clamp holding drain tube to fitting and pull the drain tube off of the fitting 8 Lift up the front of the base and rotate the base up and off of the ice machine The machine is now exposed for service STEP 8 March 2010 Page 7 STEP 2 STEP 5 STEP 6 AFE424 Initial Start Up After the final check list has been gone through the ice machine may be started up 1 Open the water shut off valve and allow the reservoir to fill with water The ice machine will not operate without 20 pounds of water pressure Note The reservoir cannot be seen without removing the hood and cover plate do not adjust float level unless the float does not shut off or overflows out the drain 2 Remove two screws and the right grill 3 Locate the master switch and switch it to ON 4 On air cooled models the fan motor will begin to turn and warm air will be discharged from the left front of the ice machine On water cooled models warm water will begin to flow from the condenser drain 5 The water temperature in the evaporator will soon drop below
9. edule Sanitize the bin interior once a month Clean the water system and air cooled condenser a minimum of twice per year If in an area of high mineral concentration in the water supply clean water system 3 4 times a year This ice machine will perform at its best when kept clean There are two areas to keep clean The water system including the water reservoir auger and evaporator surface and the air cooled condenser filter and the condenser itself Air Filter air cooled only 1 Remove the grill on the right front of the unit 2 Remove two screws and the bracket holding the filter to the condenser Remove Bracket he 3 Pull the filter forward and twist it slightly to pull it though the slot in the front base of the ice machine Remove Filter TATA are A SEN Ss iy AAA TTI h ae eh w 4 Wash the surface of the filter off with 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 that only the surface of the condenser be cleaned with the bin in place A vacuum cleaner with a soft brush attachment will extract most
10. es 10 Unblock the float and move the master switch to ON 11 Operate the unit for at least 15 more minutes then switch the unit off 12 Discard or melt any ice in the bin 13 Thoroughly wash all interior surfaces of the reservoir cover bin bin door and hood with the sanitizing solution 14 Move the master switch to On 15 Replace the grills cover plate and hood December 2009 Page 10 AFE424 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 Cleaner to 4 pints of hot 95 F 110 F water Scotsman Ice Machine Cleaner contains acids AWARNING 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 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 in
11. freezing and ice will begin to flow out of the chute The first bits of ice will not be has hard nor dry as it will after about 10 minutes of ice production 6 Allow the ice machine to operate for about 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 auger motor will continue to operate pushing out ice that has formed in the evaporator The bin will fill with ice until the top of the ice pile covers the bin thermostat sensing tube At that point the lower part of the ice pile will be very close to the bottom edge of the door opening Note The thermostat is adjustable to allow for variations in altitude Rotating the adjustment knob counterclockwise will adjust the thermostat to open and close at warmer temperatures Adjustment should not be needed unless the altitude is greater than 2 000 ft After adjustment place ice on the thermostat tube to check that the machine shuts off at the new setting 8 Replace all the grill and close the bin door The ice machine is now ready for automatic operation March 2010 Page 8 AFE424 Maintenance and Cleaning Cleaning Sch
12. loose dust stuck to the surface of the condenser fins If there is any doubt about dirt inside the fins of the condenser the cabinet should be removed and a qualified service agent should clean the condenser Water cooled units The water cooled condenser may over time and under certain water conditions become internally restricted by minerals These will have to be dissolved by acid or the condenser replaced Only a qualified service agent should attempt this type of service March 2010 Page 9 AFE424 Maintenance and Cleaning 17 After all of the solution has been poured in Cleaning Water System The water system is cleaned by flowing a mixture of water and Scotsman Ice Machine Scale Remover through the water reservoir into the evaporator and into the ice storage bin as ice 1 Remove the right and left grills 2 Locate the master switch and move it to the OFF position 3 Empty the bin of ice 4 Locate knobs holding hood to bin and remove them 5 Remove hood from ice machine 6 Locate knobs holding bin to chassis and remove 7 Disconnect drain hose from bin 8 Lift up on front of bin and rotate bin off of chassis 9 Remove cover plate over reservoir 10 Block the float up to shut off water flow 11 Locate the evaporator drain unplug it and drain the evaporator Re plug the drain 12 Place the bin back onto the chassis 13 Reconnect the drain hose to the bin drain 14 Mix a so
13. lution of 1 5 quarts of warm 95 F 115 F water and 4 ounces of Scotsman Clear 1 Ice Machine Scale Remover Scotsman Ice Machine Scale Remover 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 15 Pour the cleaning solution into the reservoir until it is full and wait 20 minutes AWARNING 16 Move the master switch to ON continue to pour cleaning solution into the reservoir until it has all been used remove the block from under the float POURING CLEANING SOLUTION INTO RESERVOIR 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 95 F 115 F water 2 Disconnect drain hose from bin 3 Lift up on front of bin and rotate bin off of chassis 4 Remove cover plate over reservoir 5 Block the float up to shut off water flow 6 Locate the evaporator drain unplug it and drain the evaporator Re plug the drain 7 Place the bin back onto the chassis 8 Reconnect the drain hose to the bin drain 9 Pour the sanitizing solution into the reservoir until it is full and wait 2 minut
14. phone number of the authorized Scotsman maximum temperatures specified Service Agency serving that location 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 electrical power supply of the correct voltage and is the ice machine the only load on that circuit 9 Has all of the shipping material been removed from the inside of the cabinet 10 Has the bin and cabinet been wiped clean and sanitized 11 Has the Customer Evaluation amp Warranty Registration form been filled out Check for correct model and serial numbers from the nameplate then mail the completed form to Scotsman March 2010 Page 6 AFE424 Removal of the Cabinet One of the most useful features of this ice machine is the ability to remove the cabinet from the ice machine without removing the ice machine from its installed position To Remove 1 Switch the master switch to OFF Be certain the ice machine has been switched off 2 Open the bin door and turn the knobs to unscrew the mounting bolts at the left and right inside of the ice storage bin Remove the mounting bolts 3 Pull the hood and door assembly straight out until it can be lifted up Caution the door may be free to come out the back of th
15. r inlet accessible from the top March 2010 Page 4 AFE424 Installation Water and Drain For The Plumber 1 Connect cold potable water to the 3 8 male flare at the top back of the cabinet A water filter is recommended Flush the water line prior to connecting to the ice machine A loop of copper tubing may be used between the ice machine and the water supply This will allow the ice machine to be pulled out from its installed location without disconnecting the water line No back flow preventer is required in the inlet potable water line because provision for that is incorporated in this N S F listed product the float seat is above the reservoir water level and cannot siphon 2 Connect a drain tube the drain fitting If water cooled the drain tubes must be run separately The bin drain fitting is 3 4 FPT and it is plastic Do not overheat AIR COOLED PLUMBING CONNECTIONS BIN DRAIN NL a a 9 FLOOR pa Na DRAIN AL i Ne SO TP le i L Praia pg te de tae te e px RESERVOIR OVERFLOW DRAIN CONDENSER DRAIN March 2010 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
16. r 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 potential corrosive nature and any damage caused by DI water will not be covered by the warranty This ice machine may be installed in the open or under a counter No clearance is required at the sides or top beyond what s needed to place the cabinet into position Air cooled models blow air in and out through the grills at the front Space is required for utility connections at the back The ice machine is not designed for outdoor use It must be installed indoors in a controlled environment The air and water temperatures must not exceed rated limits Electrical power is supplied through a cord connected to the unit All local codes must be followed Pre installation 1 Inspect the place where the ice machine is to be installed Check for space for the cabinet water supply drain availability and electrical power supply No extension cords are allowed The building drain inlet must be lower than the drain outlet s at the back of the ice machine The water supply must have a hand shut off valve accessible when the unit is installed 2 Determine the method of installation is the machine to be installed under the counter Is the drain in the floor under the machine Is the wate
17. terior 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
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