OPERNION and SERVICE MANUAL
Contents
1. ALWAYS TURN THE SELECTOR SWITCH TO THE OFF POSITION ALSO TURN OFF DISCONNECT SWITCH ON ELECTRICAL SUPPLY LINE BEFORE EXPOSING ANY ELECTRICAL CONNECTIONS AND OR MOVING PARTS SUCH AS BELTS PULLEYS FAN BLADES AND BEATER Page 17 PROBLEM 1 Product too soft TROUBLE SHOOTING GUIDE PROBABLE CAUSE SUGGESTED REMEDY shut off A Drawing faster than machine can A Slow down draw rate produce a B Torque control out of calibra B Call serviceman tion or defective C Machine short of gas C Call serviceman 2 Nothing comes out A No mix in mix tank A Add mix to mix tank of dispensing head B Feeding tube hole not suffi Open outer feeding tube jacket ciently opened 3 Machine will not A Compressor not working A Defective starting capacitor freeze Short of gas B Call serviceman C Defective torque control C Call serviceman Defective starter D Call serviceman 4 Machine runs continu A Front micro switch stuck on A Readjust micro switch UC ously ON position B 10 Minute Timer stuck on ON B Call serviceman 4 position C No gas C Call serviceman 5 Beater motor humming A No mix in cylinder A Proceed as per 1 and 4 above 6 Beater motor will not A Front micro switch activated A Proceed as per 4 above IT TROUBLE SHOOTING GUIDE PROBLEM PROBABLE CAUSE SUGGESTED REMEDY 7 Machine will not start A No power to machine A Check plug disconnect switch fuses P2. 6 Timer Time Delay The timer portion of the control will start the beater motor every 10 minutes when the unit is in the AUTO mode allowing the torque control to sense the consistency of the product The Time Delay will delay the start of the compressor 1 5 seconds later than the beater motor in the AUTO position C OTHER CONTROLS 1 Solenoid Valve This valve located on the left side is normally closed It will open during the compressor operation 2 Rear Micro Switch operates in conjunction with the Hard O Matic to keep the product at the proper consis tency For adjustment See Part V Paragraph 2 3 High Pressure Cut Out Located on right side of the freezer and teed into the discharge line near the com pressor it will cut out the compressor in the event of a high pressure situation such as a clogged condenser loss of air circulation etc See Figure 9 NOTE CAUTION The fan blade is mounted directly to the beater motor shaft When cleaning the interior of the machine ALWAYS CUT OFF THE MAIN CIRCUIT BREAKER OR TURN OFF THE DISCON NECT SWITCH BEFORE SERVICING THE INSIDE OF THE MACHINE THE FAN BLADE WILL BE IN MOTION ANY TIME THE BEATER MOTOR IS ACTIVATED Page 6 PART III INITIAL CLEANING PROCEDURE This is a new machine and it must be completely disassembled washed and sanitized before starting Proceed as follows 1 Remove mix tank cover and items packed in the tank spare parts sani
3. into the slot Front Micro Switch Assembly 152 Benzing D4 Mix Tank Cover Gravity Feed Tube Production Maximum Air Intake Moderate H Moderate L Max Fill Level e Energy Conservation SELECTOR SWITCH TRANSFORMER TERMINAL BLOCK THERMOSTAT OVERLOAD PROTECTOR BEATER MOTOR CONTACTOR COMPRESSOR CONTACTOR REAR MICRO SWITCH TERMINAL BLOCK TIMER FILTER DRYER TENSION SPRING CONDENSER FAN BEATER MOTOR HIGH PRESSURE CUT OUT HIGH SIDE ACCESS COMPRESSOR RELAY Moda UC K Ries Wa Wiring Diagram Model OFF ENERGY CONSERVATION AUTOMATIC BEATER FU Fuse PR Pressure Control MC Compressor Motor CAC Starting Capacitor for MIA Rear Micro Switch Compressor Motor Overload Protector Spigot Micro Switch Overload Protector for RA Compressor Motor Starting Beater Motor Relays CR Rotary Switch TEC E Thermostat EVC Cylinder Solenoid Valve TTA Beater Motor Contactor MA Beater Motor Compressor Motor Contactor TR Transformer _ TZF Timer LSL Level pilot lamp IML Level magnetic switch figure 10
4. only with the 0 ring extractor supplied with the machine Clean the machine according to the instructions Lubricate all O rings and seals as instructed The wearing or the improper cleaning of the beater and the pump shaft seals will result in leakage from the rear Check the drip chute pans frequently and replace seals when necessary Replace any O ring that has a nick in it It will leak and interfere with the proper performance of the machine When all the spare parts supplied with the machine are used re order immediately Do not wait until the part is required again NEVER use the AUTO position position for washing sanitizing and initially filling the freezing cylinder IMPORTANT During the washing and sanitizing period run the machine only for the time strictly necessary for this opera tion Prolonged use of the beater in the cleaning position May cause severe damage to the machine Always wash metal plastic or rubber parts in lukewarm water NEVER NEVER USE HOT WATER Check the belt tension periodically You should be able to depress the belt about ME of an inch between the pulley and the illi Page 16 11 IMPORTANT THE MODEL UC 71G IS AN AIR COOLED MACHINE AND THUS ITS EFFICIENCY DEPENDS ON THE AIR COOLED CONDENSER THE FINS OF THE CONDENSER MUST BE CLEANED EVERY TWO OR THREE MONTHS TO ASSURE EFFICIENCY WARNING EXTREME CARE MUST BE TAKEN WHEN REMOVING SIDE REAR OR CONTROL BOX PANELS
5. these clearances are not maintained the production will be reduced cycling will increase and possibly the machine will stop completely IMPOR TANT Sanitary regulations require that counter model machines be sealed to cabinet top Apply a coat of proper sealing com pound RTV 732 or equivalent to machine frame base before securing unit After installation excess sealer around perimeter should be removed Page 2 COUNTER MODEL UC 71G DRIP CHUTES REVERSIBLE 8 N 21 E EE FRONT VIEW UC 71G REAR VIEW UC TIG B ELECTRICAL REQUIREMENTS Wiring should be made in accordance with the National Electrical Code and or local electrical codes rules and regulations Voltage Running Amperage Fuse Size UC 71G 115 1 60 FLA 19 0 Amperes 30 AMP MAX Power Supply must be adequate to meet requirements at all times Voltage fluctuations with the machine in operation should not exceed 10 of the normal or rated voltage Adequate Wiring should be provided with respect to wire size or gauge Unless otherwise required by the local Electrical Code the same size wire gauge at the machine junction box should be used for the direct power line A separate circuit breaker with adequate fuse protection should be employed y Page 3 An unfused disconnect switch or a proper size plug and receptacle close to the freezer is recommended Coldelite freezers are provided with protection for the beater m
6. ON Before starting this procedure make sure the carton does not show any evidence of having been dropped tampered with or abused in such a way as to indicate that its contents may have been damaged in transit IMPORTANT Should the outside of the carton give any indica tion of possible hidden damage state this on the Bill of Lading before signing Contact the carrier immediately and request an inspection of the damage If this is not done you are responsible and must pay for any repairs required A UNCRATING Proceed as follows 1 The carton is held to the skid by steel strapping When you cut this strapping do it with caution as it may spring out Remove carton by lifting it straight up Do not force 2 Remove single screw at the bottom of each side panel Remove panels by sliding panel upward slightly then pull outward at the bottom and allow the panel to slide down 3 The freezer is held to the skid by a nut and bolt on the left and right side Remove these bolts and the skid 4 The freezer is now ready to be placed on the counter Note the illustrations on the following page The counter must be capable of supporting 275 lbs without vibration Reinforce it if necessary Remember when choosing a location that this unit is an air cooled unit and the proper air flow must be maintained Allow at least 6 inches on either side and a minimum of 12 inches between the rear of the machine and any obstruction Note If
7. Soft Serve Freezer SINGLE FLAVOR COUNTER MODEL UC 71G OPERATION and SERVICE MANUAL COLDELITE CORPORATION OF AMERICA 3760 INDUSTRIAL DR WINSTON SALEM 27105 TEL 949 661 9893 e FAX 949 664 9895 5543230 REV 05 6 93 Foreword PART 1 PART 11 PART 111 PART IV PART V INDEX INSTALLATION A Uncrating B Electrical Requirements C Electrical Connections EXPLANATION OF ELECTRICAL CONTROLS A Selector Switch B Control Box C Other Controls INITIAL CLEANING PROCEDURE Assembly of Freezer Head Assembly Diagram Sanitizing the Freezer STARTING THE FREEZER Accessories for Model UC 71G Routine Periodic Cleaning Procedures TECHNICAL INFORMATION A Refrigeration Adjusting Product Temperature How to Adjust Rear Micro Switch Hard O Matic Springs WARNING Energy Conservation Mix Tank Refrigeration B Drive System Spigot Switch How It Operates How to Adjust Front Micro Switch Gravity Feed Valve How to Operate How to Adjust Gravity Feed Valve MAINTENANCE WARNING TROUBLE SHOOTING GUIDE APPENDIX Figures 1 to 10 u UN N 19 FOREWORD Thank you for selecting COLDELITE to meet today s fast growing demands Your COLDELITE freezer has been manufactured at the most modern freezer manufacturing plant in the U S A our Winston Salem N C facility utilizing the most advanced equipment and technology available in the industry We at Co
8. assembling the idler first hold it so that the fins are in upright position Then insert it so that the thinner portion of the idler shaft fits into the grooved slot at the front of the beater auger Item 21 Fig 8 The grooved slot must be facing up at all times The front bar of the idler should be in hor izontal position Push the idler back inserting its shaft into the hole of the beater auger shaft installed correctly the idler when turned should rotate freely and will be automatical ly locked in place it does not rotate it is installed in correctly Go through the above instructions again Finally when properly install d the front bar of the idler should be in a vertical position so that the bar will not inter fere with the two pins located inside the spigot head when the head is installed See Figure 3 a 7 HEAD ASSEMBLY MODEL 71 See Fig 6 7 amp 8 for breakdown of parts HAND KNOBS Place head assembly on studs and turn both hand knobs to tighten evenly NEVER USE A WRENCH hand tight only Should you have a leak around the head assembly after hand tightening remove the head and lubricate the 0 ring behind the head with petrogel or equivalent Page 8 SANITIZING THE FREEZER The freezer is now washed and reassembled The next step is to sanitize the machine which is most important This procedure will retard the growth of bacteria and insure excellent tests on you
9. counter clockwise when facing the front of the machine If checking from the rear of the machine note direction of arrow on fly wheel for rotation 4 PART II EXPLANATION OF ELECTRICAL CONTROL SELECTOR SWITCH Fig A Positions of switch are as OFF AUTO ENERGY CONSER VATION BEATER follows Machine is off This position is used for the production and dispensing of ice cream yogurt etc This position is used for prolonged idie periods Product is held at a safe temperature which is above serving temperature and controlled by a thermostat The product may not be served when in this position The beater motor will operate whenever the compressor does This position will only activate the beater motor compressor circuits are de energized which will be necessary during the cleaning sanitizing and start up operation ENERGY CONS Page 5 B CONTROL BOX located under right side panel and consists of the following Figure 9 1 Compressor Starter 2 Beater Motor Contactor 3 Overload Protector This device senses the current supplied to the beater motor and will stop the entire machine in the event of an overload This device also houses the reset button 4 Transformer Steps down line voltage to 24 volts to supply controls 5 Thermostat Controls temperature of the product in the freezing cylinder when the unit is in the ENERGY CONSER VATION mode
10. ldelite take great pride and care in the manufacture of each and every freezer using only the finest components available to provide you with years of trouble free operation Over twenty five years of experience in the manufacturing of dispensing equipment have guided us in the preparation of this Operation and Service Manual PLEASE READ IT CAREFULLY Keep it for future reference and most of all follow the instructions from the very time your machine is delivered On the following pages you will find important information and procedures which describe the proper installation sanitizing operation and maintenance of your COLDELITE machine We feel certain that your full compliance with these instructions will assure you of excellent performance trouble free operation and a profitable business for years to come NOTICE Failure to closely follow set up and maintenance procedures can void your warranty Coldelite Corporation will not be responsible for any machine not properly maintained In the event this unit should malfunction please contact your Coldelite distributor or an authorized service agency WARNING EXTREME CARE MUST BE TAKEN WHEN REMOVING SIDE REAR OR CONTROL BOX PANELS ALWAYS TURN THE SELECTOR SWITCH TO THE OFF POSITION ALSO TURN OFF THE DISCONNECT SWITCH ON ELECTRICAL SUPPLY LINE BEFORE EXPOSING ANY ELECTRICAL CONNECTIONS AND OR MOVING PARTS SUCH AS BELTS PULLEYS FAN BLADES AND BEATER PART 1 INSTALLATI
11. linder and mix tank walls This cold plate will conduct heat away from the mix tank to the freezing cylinder This plate has been engineered to maintain temperatures necessary for mix storage This is a fixed feature and no adjustments can be made B DRIVE SYSTEM The transmission between the motor and the beater is obtained by a belt system The tension of the belt is preset at the factory and is automatically self regulated It is advisable to check the belt periodically The tension should be 3 8 when depressed in the middle between the two pulleys Beater Motor e 3 4 hp Actual Running Amps 8 5 Main Drive Belt 490316 SPIGOT SWITCH How It Operates See Fig 4 A micro switch located in the housing directly above the spigot head assembly actuates the beater motor whenever the dispensing handle is pulled down to draw product The selector switch must be in the AUTO position The actuating lever is preset at the factory HOW TO ADJUST THE FRONT MICRO SWITCH Should it become necessary to take the assembly apart for any reason proper calibration must be maintained The micro switch must energize and start the beater motor before the product is dispensed from the head To check physically bend down and look up through the opening at the bottom of the dispensing head Slowly pull the dispensing handle down to raise the piston inside the head The micro switch must be activated you will hear the switch click before
12. mes out of the head close the plunger and allow the machine to con tinue to run with the switch in the BEATER position for one minute 2 Now turn the selector switch to AUTO This activates the torque control to sense that refrigeration is required Then simply allow the machine to run until it goes off automatically 3 You are now ready to draw a finished product Pull the dispensing handle down slowly until the product comes out The freezer is now in the normal operating position Be sure to add mix when necessary and simply dispense the product as required 4 Production of the machine is 4 gallons per hour calcu lated at 40 overrun or 2 3 cones per minute 4 5 oz volume per cone ACCESSORIES FOR THE MODEL UC 71G A drain attachment for the dispensing head which consists of a watertight connection to the head assembly and a hose to direct the waste water to a suitable drain during the cleaning operation This drain must be lower than the spigot head preferably a floor drain as the water must flow out of the machine Page 9 ROUTINE PERIODIC CLEANING PROCEDURES Cleaning and sanitizing schedules are governed by your state or local regulatory agencies and must be followed accordingly A well planned cleaning schedule will eliminate excessive waste of time and product within your organization On a designated day s of the week run the mix in the mix tank as low as feasible Proceed to clean the machi
13. nd should be moved away from the fly wheel b If a reading indicates an amperage higher than that of the label amperage the micro switch opens too lat and should be moved toward the fly wheel The micro switch is secured to a rectangular mounting plate fastened to the frame of the machine but free to rotate slightly around its retaining bolt Rotation of the plate toward or away from the fly wheel is achieved by turning a screw located on the plate itself Turning the adjustment screw clockwise will move the micro switch away from the fly wheel The compressor will cut off later Turning the adjustment screw counter clockwise will move the micro switch closer to the fly wheel The compressor will cut off sooner Before adjusting the rear micro switch refer to the decal inside the electrical box for HOM Cut Out Amperage NOTE At no time should the HOM Cut Out Amperage exceed the F L A rating of the beater motor Page 12 HARD O MATIC SPRINGS The springs are of the best quality and have a very long life expectancy However should it become evident that the adjustment of the HOM cannot be achieved by moving the micro switch within the proper range replacement of the springs is then necessary Only springs from the original manufacturer should be used If the HOM assembly must be taken apart the following in structions are important and must be observed 1 Grease the inclines of both discs generously 2 Re as
14. ne as follows 1 Turn the Selector Switch to BEATER position and let the machine run for 4 to 5 minutes This will soften the product in the cylinder and allow the remaining product to be re moved more easily 2 Place a container or bucket under the spigot head Slowly pull the handle down and remove remaining product from the cylinder 3 When the product has stopped flowing turn the Selector Switch to the OFF position Close the spigot handle See Part III Initial Cleaning Procedure 4 Fill the mix tank with lukewarm water and turn the Selector Switch to the BEATER position for 2 to 3 seconds Turn Selec tor Switch to the OFF position and drain off water by opening the spigot handle Repeat this process two to three times until the water drained off is relatively clear A mild deter gent can be used in this rinsing or flushing process 5 Brush mix tank thoroughly and drain machine Then flush with a sanitizing solution to remove all mix particles 6 Remove spigot head assembly beater and shaft seal Refer to Part Initial Cleaning Procedure 7 Thoroughly clean all disassembled parts and surfaces with a mild detergent and then sanitizing solution refer to Sanitizing The Freezer Page 8a and Assembling the Freezer Page 7 Page 10 PART_V TECHNICAL INFORMATION A Refrigeration Compressor Hermetic 1 hp 502 Actual Running Amperage 9 5 10 0 Suction Pressure 22 psig Discha
15. on the rear frame of the machine The opening of this micro switch will de energize the coil of the compressor contactor which will immediately stop the beater motor and compressor simultaneously Thus the refrigeration Page 11 system is controlled by the c nsistency of the product in the freezing cylinder and not by temperature controls When you pull the handle on the spigot head to draw a cone or portion another micro switch is automatically closed which bypasses the Hard O Matic micro switch and starts the beater motor only This simultaneously pumps new product into the freezing cylinder and starts to change its consistency The force or drag on the beater is slowly reduced and the springs of the slip clutch return the assembly to its normal position The compressor starts and thus keeps the product in the freez ing cylinder at the proper consistency HOW TO ADJUST THE REAR MICRO SWITCH The firmness of the product depends on the position of the micro switch in relation to the drive assembly The compressor must be cut off when the current absorbed by the beater motor is equal to the amperage indicated on the label in the electrical box B M Cut Out Amps By using an ammeter across the line feeding the beater motor it is pos sible to check the amperage drawn by the motor at the time the micro switch opens a If a reading indicates an amperage lower than that of the label amperage the micro switch opens too soon a
16. otor Should the line voltage drop or if there is a short circuit the overload protector will automatically disconnect the starter and the machine will stop immediately so that no permanent damage can be caused to the motor To start the freezer again push the RESET button accessed through a hole in the right side panel The heater must cool down for several minutes before the RESET will operate The compressor is also internally protected If the Klixon protector trips due to an overload to the compressor the protector will reset automatically ELECTRICAL CONNECTIONS After removing the right side panel the field wiring box will be found on the bottom plate and is labeled Connect Power Line Here The power line is passed through a hole located at the bottom right at the rear of the machine in the pedestal then it is passed through a hole on the bottom deck directly below the field wiring box The power line may then be con nected to the field wiring box Upon completion the power line should be clamped to side of control box with the clamp supplied In all installations the machine must be properly grounded Since all high voltage components controls are 24 volts are connected by means of flexible conduit adequate ground continuity is assured by running and fastening a ground line to the machine junction box ground lug After electrical connections are completed check the rota tion of the beater It should be
17. r product when examined by the Sanitation and or Department of Agriculture First mix the sanitizer in a clean pail Hot water first to dissolve the powder and then cold water Instructions are on the sample sanitizer that is included with the machine Usually two tablespoons to two gallons of water will give you a solution of 200 ppm chlorine which is suf ficient to kill the bacteria Do not exceed the formula as it does not add to its effectiveness With the selector switch in the OFF position pour one gallon of sanitizer into the mix tank Lay the gravity feed tube in the mix tank so that it is covered with the sanitiz ing solution Now turn the selector switch to BEATER for only a few seconds The sanitizer will now run freely into the cylinder Simply place a bucket or drain attachment under the head and allow the sanitizer to run out During this operation the selec tor switch is in the OFF position We recommend that the auger beater be turned as little as possible during the washing and sanitizing operations In the last phase you can turn the selector switch to BEATER for two or three seconds to help remove the last of the sanitizer For sanitary reasons the plastic cover on top of the mix tank should be removed only for the time strictly necessary to make the desired adjustments Page 8a CLEANING AND SANITIZING INSTRUCTIONS NSF REGULATIONS Drain machine of all mix and rinse with cool water Turn selector s
18. rge Pressure 245 psig 72 ambient Cooling System Air Use of 502 only 1 5 lbs 1 ADJUSTING PRODUCT TEMPERATURE Coldelite uses a Hard O Matic system patented which is referred to as HOM This mechanical device controls the refrigeration system for the freezing cylinder by sensing the consistency or hardness of the product inside the freezing cylinder No thermostats are used in this system Basically the HOM control consists of a clutch assembly Fig 2 The inclines of a disc fastened to the fly wheel are engaged to the inclines of another disc which in turn rotates the auger A set of springs properly calibrated and radially located around the fly wheel maintains the two discs engaged by exerting a certain pressure With the gradual hardening of the product inside the freezing cylinder a certain resistance or drag will be exerted on the auger by the product itself The disc rotating the auger will also be affected by this drag and will start sliding on the inclines of the other disc overcoming the pressure of the springs The gradual separation of the two discs as a result of the sliding of the inclined surfaces of one disc against the other will move the complete drive assembly toward the rear of the machine By the time the product has reached the proper consistency or hardness the drive assembly will have moved backwards just enough to open a normally closed micro switch fastened to the support
19. semble the springs with the spacers 3 After tightening the retaining bolt make sure the disc is not locked but is free to rotate slightly CUT OUT AMPERAGE Single Phase 8 5 WARNING The maximum travel of the disc and assembly is approximately 1 4 of an inch In adjusting the distance of the micro switch from the drive assembly do not increase this distance more than 1 4 of an inch If this adjustment is increased more than 1 4 of an inch the drive assembly would never move back far enough to open the normally closed micro switch Therefore the com pressor and beater motor would run continuously and cause a freeze up The adjustment of the micro switch position requires only slight movements of the assembly in either direction ENERGY CONSERVATION Unlike the AUTO mode the ENERGY CONSERVATION mode makes use of a thermostat see Fig 9 The sensing element for this thermostat is located on the left side of the hopper in a well encased by foam This element senses the temperature of the evaporator freezing cylinder and due to loss of temperature is set approximately 10 F colder than the product temperature which should be 30 F 35 F Page 13 It is important to note that the beater motor will run on ENERGY CONSERVATION This is necessary to drive the condenser fan blade MIX TANK REFRIGERATION Refrigeration for the mix tank is provided by the use of a cold plate which is common to the freezing cy
20. tank cover and serves as a device to eliminate potential clogging inside the tubes You may find it necessary to adjust the position of the outer tube in order to regulate the amount of mix entering the freezing cylinder after start up Actually sales conditions will dictate the proper adjustment If more production is required increase the opening by rotating the outer tube to a larger hole and conversely when business is slow rotate to a smaller hole on the outer tube reducing the opening Naturally when the mix runs low in the mix tank you will open the slot more and eventually take the feed tube out completely to use the last of mix in the mix tank Energy Conservation During long idle periods it is recommended the outer sleeve of the gravity feed tube be rotated to the position which closes the mix intake hole completely IMPORTANT Remember to rotate the outer tube to the appro priate opening before switching to the AUTO mode Page 15 MATNTENANCE Your COLDELITE machine has been designed engineered and manu factured to achieve high performance and long durability The life expectancy of a machine any machine does not depend only on the quality of its components and design but also on the beneficial effects of basic maintenance procedures It is important to you therefore to become familiar with a few of these basic procedures 1 2 3 4 5 6 7 8 9 10 Remove O rings
21. tizer lubricant gravity feed tube etc 2 Now remove the remaining parts from the machine Remove the two hand knobs holding the head in place Then remove the head assembly itself Pull the auger out of the cylinder Make certain that the lip seal on the rear of the shaft is removed It is possible that it may stick to the back of the cylinder Take these parts to the sink and wash Remove the pin holding the handle in the dispensing plunger Remove the handle and the plunger for washing It is advisable to use a dish pan to put the parts in so that no part is dropped or lost This should be a plastic pan 3 You now have all the parts for the freezer in the sink Wash all these parts with a detergent and the brushes supplied with the machine DO NOT USE HOT WATER ON ANY PLASTIC PARTS Rinse all parts in warm water Do not dry these parts but allow to air dry or assemble wet ASSEMBLY OF FREEZER Reverse the above procedure Install the auger first being sure that the lip seal is on the rear of the auger and has been lubricated on both sides with the sample lubricant supplied 11 O rings must be lubricated lightly with Petrogel or equivalent When reassembling the freezer refer to the illustrations Figures 6 7 and 8 CAUTION is very important to have the idler installed cor rectly If not done properly damage can be caused to the spig ot head assembly Assembly instructions should be carefully fol lowed When
22. ush reset button B Faulty selector switch B Call serviceman C Off on overload Push reset button after waiting for reset to cool 8 Short cycle on A Going off on high pressure A Clean condenser machine B Defective Klixon on compressor 9 Machine smoking A Belt is slipping A Turn off machine and tighten belt B Cylinder starved B Reset mix intake tube to add more mix to cylinder Turn machine OFF Put selector switch on BEATER for one minute Return to AUTO position Resume normal operation 10 Mix drips from rear A O ring missing or has a split A Install or replace O ring of head assembly B Head not tight B Tighten hand knobs 11 Low overrun A Defective O ring Check A Replace any O ring with a nick all O rings B Too much liquid in cylinders B Close liquid hole in feeding tube obeg DC TG Model 250 N Qi Fig 1 Beater Drive Assembly 80 ANGUS 38507 78 X E f 77 A Assembling the Beater Augers 1 First re assemble the beater auger assembly Begin by gathering the four parts needed to complete each assembly A plastic END PUSHER B BEATER AUGER C IDLER D rubber beater LIP SEAL E PLASTIC SCRAPERS 2 2 Aligning the slot on END PUSHER and the one the holding ring of BEATER AUGER slide the end pusher onto the BEATER AUGER as shown 3 Next install the IDLER in the slot of END PUSHER Guide the IDLER shaft down
23. witch s to OFF position Remove and disassemble spigot head mix pump s feed elbow and beater s In a clean pail mix one ounce of Nu Foam Liquid Detergent or equivalent with three gallons of warm water 70 80 F Clean and brush all surfaces in contact with product Fiush thoroughly with warm water Reassemble all parts and install on machine See instructions in manual In a clean pail mix two ounces of Stera Sheen Green Label Sanitizer or equivalent with two gallons of warm water This will make a 200 ppm concentration of chlorine sanitizing solution Fill hopper s and cylinder s with sanitizing solution Turn selector switch s to BEATER position for approximately 30 seconds Make sure sanitizer solution is in contact with product contact surfaces for three to five minutes Drain machine thoroughly before refilling with product Page 8b PART IV STARTING THE FREEZER The Model UC 71G is now sanitized and ready for production Start the machine as follows 1 Insert the gravity feed tube in the mix tank Pour at least one gallon of liquid mix into the mix tank The maximum capacity of the hopper is two gallons Never load mix above the top of the feeding tube See Page 14 Turn the selector switch to BEATER and allow the machine to run a few seconds Place a pail or cup under the dispensing nozzle open the dispensing plunger and let the mix push out any sanitizer left in the cylinder When pure mix co
24. you can see the opening orifice inside the head If this opening shows before you hear the click the adjusting screw must be raised To do so loosen the lock nut under the adjustment screw and turn the screw counter clockwise Re tighten the lock nut after this adjustment Page 14 Gravity Feed Valve How to Operate and Make Adjustments The Gravity Feed Valve consists of two tubes one sliding inside the other and a plunger splash guard The inner tube blends the flow of air and mix into the freezing cylinder Air enters through the top of the tube and the mix through a round hole at the base See illustration below Production Maximum Air Intake A Maderate L Energy Conservation The outer tube is actually a valve Rotating it hole to fiole on the outer tube varies the size of the hole and the amount of mix that flows into the freezing cylinder The size of the air inlet at the top of the tube does not change so the amount of air that enters the freezing cylinder is constant You can vary the overrun yield by letting more or less mix enter the freezing cylinder by manually regulating the valve You must align the mix inlet holes on both the inner and outer tubes or no mix will enter the cylinder You can see this hole at the top of both tubes See illustration below Gravity Feed Tube Adjustment Settings The plunger splash guard keeps the mix from splashing on the mix
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