UniVendor Service Section
Contents
1. S 16 Vendo CREDIT ESTABLISHED For the following information refer to figure 17 With money inserted credit is established A short signal is sent from the Vend Switch energizing the Credit Relay A path of power is made L1 to the Selection Switches Money is inserted and the correct amount of change is established by the Coinage Unit The Coinage Unit sends a momentary signal energizing the Credit Relay Coil Power travels through Pin 7 to Pin 4 the normally closed contacts This forms a holding circuit for the Credit Relay Coil Power passes from L1 through the Vend Switch to pin 9 through pin 9 to pin 6 This creates a path of power to the Selection Switches A selection can now be made FIGURE 18 VEND MOTOR SYMBOLS LAST SELECTIO SELECTIO SWITCHES SOLD OUT AMD Co ENERGIZED LINE INACTIVE LINE OMENTARIL ENERGIZED LINE ESTABLISHE S 17 Vendo SELECTION MADE VEND MOTOR ENGAGED For the following information refer to figure 18 With credit established as in page 18 a path of power is extended to the Selection switches As the2. 7 6 5 4 3 1 STYLE B WITH SEQUENCER REFER TO FIGURE 4 FOR STYLES 5 5 Vendo COMPRESSOR DRAIN TUBE i ONDENSATION P4 i SE FAN BRACKET FIGURE 7 DOOR ROLLER FIGURE 8 REFRIGERATION AREA ALIGNMENT CHECKS DOOR ROLLER CHECK The Door Roller assembly is raised or lowered by adding or removing shims see figure 7 Raising or lowering the roller will help ensure the proper alignment of the door lockstud to the cabinet latch DOOR ALIGNMENT CHECK After any door adjustment the Quick Lock will align itself automatically When additional adjustment is necessary Loosen mounting screws see Figure 9 and raise or lower latch to the correct position The floating nut of the Quick Lock must be able to engage the bolt of the T handle REFRIGERATION AREA
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4. the Vendor is ready to vend again in the Standby phase see page 16 FIGURE 20 MOTOR RUN PHASE LAST SELECTION SYMBOL LEGEND SWITCH SELECTION NORMALLY CLOSET SWITCHES COMMON lt C gt NORMALLY OPEN NDD VEND MOTO aa SOLD OUT Co o lo LAMPS ENERGIZED LINE INACTIVE LINE ENERGIZED LINE LA CREDIT RELAY 5 19 Vendo SEQUENCING RELAY The Sequencing relay will vend two columns from the same selection button it vends alternately between the two columns Figure 21 shows the sequence control relay sequence columns one Figure 22 shows the sequence control relay sequencing column two FIGURE 21 SEQUENCE RELAY LAST SELECTION YMBOL LEGEND SWITCH c SELECTIO MALLY CLOSED NC A SWITCHES gt COMMON MALLY ND SOLD OUT END MOTOR AMPS Rey LA ENERGIZED LINE INACTIVE LINE MOMENTARILY ENERGIZED LINE S 20 FIGURE 22 SEQUENCE RELAY SYMBOL LEGEND SWITCH NORMALL LOSED lt gt COMMON lt NORMALLY EN
5. The fan blows air through the evaporator which removes the heat from the air It circulates the cool air over the product removing excess heat from the product The evaporator fan assembly is mounted to a fan bracket mounted to the extensions of the evaporator These parts are located in the refrigerated area of the cabinet NOTE On Vendors prior to January 1991 there are two evaporator fans on the 1 3 HP and the Super 1 3 HP units One fan is running at all times TEMPERATURE CONTROL The temperature control regulates the temperature inside the refrigerated space of the vendor The control is adjustable The temperature control consist of two main parts the temperature control box and the thermostat feeler bulb The control box is mounted to the side of the evaporator The bulb is mounted on the evaporator fan bracket in the air flow of fan The bulb is a very narrow tube with a refrigerant liquid inside Small tubing connects the bulb to the control box As liquid in the feeler bulb warms it expands into the tubing and then into the control box pressing against a bellows The bellows closes a switch in temperature control activating the compressor and the condenser fan As the liquid in the feeler bulb cools it contracts and releases the pressure against the bellows opening the switch deactivating the compressor and the condenser fan STARTING RELAY The starting relay is mounted in the terminal box on the side of the compressor housing
6. When the compressor first starts up the starting relay closes and completes a starting circuit When the compressor motor reaches operating speed the starting relay opens and break the staring circuit THERMAL OVERLOAD SWITCH The thermal overload switch is mounted in the terminal box on the side of the compressor housing If the compressor motor gets hot or draws too much current the thermal overload opens and breaks the starting and running circuit of the motor As the motor cools the thermal overload closes allowing the compressor to run 5 30 Vendo MAINTENANCE The following section is a basic guide for general maintenance and servicing of the Vendor This section is divided into four parts 1 Preventative Maintenance Il Lubrication Guide Care and Cleaning IV Basic Trouble Shooting l PREVENTATIVE MAINTENANCE SUGGESTIONS When ever a Vendor is Visited on its site the following service call suggestion should be performed Preventative maintenance will help prevent major problems with the Vendor A Observe the Vendor and its surrounding area for any unusual indications of problems rear on cabinet obstructions of the air flow dark spots on the sign face etc B Open the door and visually check the inside of the Vendor water accumulation rust marks moisture around the edges of the inner door etc Check the fluorescent lamps replace as necessary Replace single pin slim line lamps within 24 to 48 hours
7. customer pushes a Selection Button power is interrupted to the other buttons and the Selection Switch closes sending to a Vend Motor The Vend Motor turns the Product Bucket and a product is dispensed FIGURE 19 VEND MOTOR SYMBOLS LAST SELECTION YMBOL LEGENI SU ELECTION 4 A A SWITCHES o NORMALLY CLOSED NC OMMON c NORMALLY OPEN ND VEND MOTOR 5 SOLD OUT LAM ENERGIZED LINE INACTIVE LINE MOMENTARILY ENERGIZED LINE Vendo MOTOR RUN PHASE For the following information see Figure 20 and also Figure 14 on page 12 At the same time as the motor turns the bucket it also turns the Cam As the Cam turns the Start Bypass Switch falls into the low part of the cam This interrupts the power path to the Credit Relay holding circuit canceling credit Simultaneously the Motor Carrier Switch is lifted to the high part of the Cam This Provides an Alternate path of power maintaining power to the motor With the Cam still rotating the Start Bypass Switch lifts back to the high part of Cam energizing the C R E M thereby permitting another purchase without the motor returning to the normal standby phase The Motor Carrier Switch falls into the lower part of the Cam cutting power to the Motor the Motor stops
8. evaporator see Figure 11 It must not touch the rear of the cabinet wall or the evaporator shield except at the clip It is possible to distort the position of the tube upon replacement and installation If the refrigeration system is replaced check the Capillary tube s position FIGURE 10 TEMPERATURE CONTROL FIGURE 11 REFRIGERATION SYSTEM my TT T I Li m int p TEMPERATURE CONTROL S 7 Vendo LOADING INSTRUCTIONS BASIC LOAD SET UP The Univendor machine is capable of vending a variety of product The Chart on page 9 is a basic guide for the load set up of these products Refer to the chart and the items in Figure 12 for each product s setting and kits Installation Instruction are included with each kit Call a service representative for kits or further information Lay product behind product retainers retainers are located in front of every column Load product evenly Bottles are loaded with crown end placed toward the back of the column In initial loading prime the machine by advancing the product into the buckets To advance product insert proper coinage and push the button of the column you wish to prime When the bucket is loaded the column is ready to vend Prime all columns FIGURE 12 BASIC LOAD SET UP ITEM NO 1 ITEM NO 4 CAM SETTINGS FRONT GUID FRONT OF PAR
9. evaporator through the suction line and to the condenser The compressor takes the low pressure vapor and compresses it increasing both the pressure and the temperature The compressor pumps the vapor at a rate rapid enough to maintain the ideal pressure The hot high pressure vapor is forced out of the compressor into discharge line and then into the condenser Air is blown through the condenser allowing heat to transfer from the condenser and into the passing air As the heat is removed the stored is condensed into a liquid The liquid refrigerant is stored in the lower tube of the condenser It is there available to flow through the restrictor tube back into the evaporator where the refrigeration cycle is repeated S 26 Vendo DETAILED REFRIGERATION CYCLE The following is a detailed refrigeration cycle as it applies to the refrigeration system installed in Vendo equipment Refer to the flow chart in Figure 23 As the temperature in the cabinet rises the liquid in the thermostat feeler bulb also rises in temperature As this liquid becomes warmer it expands This expanding liquid expands against the temperature control bellow which operates the temperature control switch The temperature control switch turns on both the compressor and condenser fan The evaporator fan pulls air from the front of the refrigerated space of the cabinet It pulls the air through the evaporator and blows it up the back of the vend stack The evaporato
10. not listed or additional question contact the Field Service Department at Vendo 7209 N Ingram Ave Fresno Ca 93650 or call 1 800 341 7216 Please have the serial number and model number of the vendor when you call The trouble shooting guide is divided into three columns First Column Possible Problem Second Column Possible Cause Third Column Service Suggestion POSSIBLE PROBLEMS POSSIBLE CAUSE SERVICE SUGGESTION Returns all good coins Check power Supply No power to changer Check coin mechanism plugs DEN check for faulty harness wiring see wiring diagram for circuit coin gate is not closed Mechanical CREM function 1 Check C R E M blocking fingers remain in coin replacement 2 Reform path due to 1 Defective coin blocking fingers return electromagnet C R E M or 2 Bent blocking fingers Electronic CREM function 1 1 Check electrical connections No power to acceptor of the acceptor 2 Defective acceptor 2 Replace acceptor Coin path are dirty Clean acceptor with approved cleaner DRY VERY THROUGHLY DO NOT LUBRICATE PATH Return all good coins Contacts of credit relay open Check continuity of relay Clean contacts with approved electrical cleaner If still open replace relay Open motor carrier circuit or Check to see that motor carrier start bypass circuit and bypass switches have returned to standby 5 33 POSSIBLE PROBLEM POSSIBLE CAUSE SERVICE SUGGESTION vended replace if nec
11. provides an alternate path of power maintaining the Motor on CS 3 With the Cam still rotating the start bypass Switch lifts back to the part of the Cam permitting another purchase when it is required CS 4 The Motor Carrier Switch falls into the lower parts of the Cam cutting power to the Motor The Motor stop ITEM 1 ITEM 2 ITEM 4 C CS 3 CS 4 SECOND EQ CS 3 SECOND CA CS 1 CS 2 X SEE ITEM 4 FOR JOUBLE CAM SET DOUBLE DEPT JS POSITION PREVIOUS POSITION NI Cc N CAM CAM 0 RETAINER l MA MOTOR CARRIER SWITCH FIGURE 14 CAM SEQUENCE 5 12 Vendo RELOADING SEQUENCE See Figure 15 RS 1 The gate link at the rests at a locked position in a cutout on the mech plate This locked position prevents the gate from opening out of sequence RS 2 The gate link is guided by a slot in the mech plate and actuates by a ridge on the bucket As the bucket turns the link is moved out of the locked position RS 3 As the link rises the gate is opened The spring maintains Pressure on the Link and the gate RS 4 Product falls onto outside of the bucket RS 5 The bucket releases the gate
12. use of Kerosene VM amp P grade Naphtha or petroleum spirits for removal When the label material does not allow penetration of solvent such as vinyl the application of heat hair blow dryer will soften the adhesive and promote removal CAUTION Excessive heat can cause surface damage After the label is removed use the general cleaning procedure list above as A SCRATCH REMOVAL Remove or minimize hairline scratches and minor abrasions by using any good quality automobile polish Test product before using LEXAN SIGNS To clean Lexan sign faces the following procedure is recommended 1 Wash sign with mild soap or detergent and lukewarm water 2 Using soft cloth or sponge gently wash the sign DO NOT SCRUB 3 Rinse well with clean lukewarm water 4 Dry thoroughly with a chamois of cellulose sponge to prevent water spotting DO NOT USE SQUEEGEE NOTE Most organic solvents petroleum spirits or alcohol are NOT compatible cleaning materials for lexan signs Usage of materials could permanently damage the sign REFRIGERATION AREA The condenser and evaporator must be kept clean for efficient operation Be sure all vanes and tubing are clean and clear of obstruction This allows free passage of air Cleaned with a brush a vacuum cleaner or compressed air Keep cabinet drain open clean as necessary 5 32 Vendo TROUBLE SHOOTING GUIDE This guide is a general list of probable problems causes and solutions For problems
13. 8 The start bypass Switch allows credit to be established and cancels Credit The switch is located beneath the Motor Carrier Switch SOLDOUT SWITCH P N 368299 There are two Sold out Switches above the Vend motor The Switches are actuated by the Sold out flap when the column is empty One switch turns the Sold out Light on and other stops the motor from running When all columns are empty the second switch stops the C R E M from accepting money SELECTION SWITCH See part Section of the Manual for P Ns The selection switch sends power to engage a Vend Motor when a Customer Presses a Selection Button The Selection Switches are beneath the Selection Button Windows VEND BUCKET P N 389416 The Vend Bucket holds the product s in a ready to vend position at the base of each column ADAPTER COUPLING P N 389785 The Adapter coupling couples the motor to the bucket It is located behind the motor on the motor shaft ANTI TILT CLIP P N 388681 The Anti Tilt Clip prevents product from dropping out of the Bucket if the Vendor is tilted The Clip is Located in the bucket 5 10 Vendo GATE P N 388636 The gate holds product above the Vend Bucket GATE LINK P N 388632 The rotation of Vend Bucket moves the gate link this opens the gate allowing one layer of product to drop into the bucket GAUGE BAR P N 388817 The Gage Bar Holds the product s inside the bucket It also regulates which product is vended first when Double Dept
14. CHECK Check the position of the Condensation Pan see Figure 8 The correct position of the Condensation Pan is between the Compressor and the Condenser Fan Bracket Be sure the Drain tube is clipped to the pan and free of kinks A loop must be maintained in the tubing The loop prevents warm air from reaching the evaporator area FIGURE 8 DOOR ALIGNMENT S 6 Vendo TEMPERATURE CONTROL PRODUCT TEMPERATURE CHECK Reference only Allow vendor to run 24 hours Vend product insert test device thermometer into beverage TEMPERATURE CONTROL SETTING The temperature inside the cabinet is regulated by the Temperature Control located on the left side of the Evaporator see Figure 10 Before adjusting control make sure the refrigeration system is working properly Check that all fans run freely and do not make excessive noise Check that the vanes of the Evaporator are free of obstructions All flow over the vanes is important for proper operation of the refrigeration unit Check the door for a tight seal When the air temperature at the Capillary tube reaches 39 degrees Fahrenheit the refrigeration system will cycle on see Figure 11 To decrease the temperature turn the Temperature Control Screw clockwise see Figure 10 To increase the temperature turn the screw counter clockwise The temperature will change approximately 6 degrees with every 1 4 turn of the control screw The Capillary tube is positioned in the air flow of the
15. ERGIZED LINE INACTIVE LINE MOMENTARILY NERGIZED LINE LAS T SELECTION SELECTION SWITCHES 5 21 3 ER TL k N EXITUS 4 dll W 4 dl Na TT I al I 1 DIA DAT m DN 2 m iy im Me FA SS 31 n h Hy desl add TE q aL s ND 35 ana 1 m En n n SUF ANN NOILYOLAN i AWW ANO 80709 15 35 N 3 y 5310 1 Hmm o f TE EXTA a 0 i 100 0708 A JL ar D 0 AIN 5 22 WIRING DIAGRAM FOR 8 SELECT
16. LA 1 La L waite La AUSTRAI TA SLIMLINE TRALI LIGHTI LIBATE LA LA BLACK BALLAST I 4 E HITE n BLACK alae j E LINE LA TA L waite J BALLAST TA L waite DOOR SWITCH WIRING DIAGRAM Vendo LIGHTING WIRING DIAGRAMS REFRIGERATION u WIRING S 24 Vendo REFRIGERATION WIRING DIAGRAM CONTINUED 5 25 Vendo REFRIGERATION OPERATION The refrigeration operation section is divided into three areas Basic Refrigeration Principle Detailed Vending machine Refrigeration cycle and Parts Description BASIC REFRIGERATION PRINCIPLE What a refrigeration system really accomplishes is the transfer of heat A refrigeration system removes the excess heat from a refrigerated ar
17. ON LABEL 7 PRICE DISPLAY PRICE DISPLAY COIN INSTRUCTION LABEL FIGURE 3 PRICE LABEL FIGURE 4 FLAVOR LABEL INSTUCTION LABEL INSTALLATION COIN INSTRUCTION LABEL amp PRICE LABEL APPLICATION Apply labels to a clean and dry surface Peel backing from label and apply to plate with a firm even pressure INSTRUCTION LABEL Refer to figure 3 for the following information Casting A has Validator Opening separate and above the Coin Casting B shows the Validator Opening built in the Coin Casting Apply Instruction Label to area shown as needed by the vendor PRICE LABEL Apply Price Label to area shown in figure 3 FLAVOR LABELS INSTALLATION In figures 4 5 amp 6 corresponding styles are indicates are indicated by A B C D or E notations Insert Flavor Labels to the side or top of Selection Window or Button Depending on the style See Figure 4 for selection style Rear view of windows and buttons is shown in Figure 5 Arrows point the direction to insert labels For Flavor Labels Location refer to figure 6 page 5 Selection Window and Selection Button Labels identify product contained in stack columns Commonly used stack configuration with corresponding windows or buttons are shown Not all possible configuration pictured FIGURE 5 LABEL INSTALLATION 5 4 Vendo FLAVOR LABELS INSTALLATION
18. UUU ITEM NO 2 ITEM NO 3 ITEM NO 5 BACK SPACER GAGE BAR POSITION BEAR GUIDE 5 8 Vendo UNIVENDOR DOMESTIC amp INTERNATIONAL STACK SETUP TABLE 5 9 Vendo VEND MECHANISM PARTS DESCRIPTION The parts listed below are part of the Vend Motor Mechanism refer to Figure 13 on page 12 One Mechanism is required per column The parts are interchangeable Setting will differ between single and wide columns MOTOR P N 388637 This motor is a thermal protected 115 volt 60 hertz shaded pole motor The motor has an externally mounted spring loaded mechanical brake The Motor is attached to the Mech Plate by three screws MOTOR CAM P N 388999 The Motor Cam assembly consists of two parts the Cam and the Cam Retainer The Cam controls the Motor Carrier and the Start Bypass Switches The Cam is Attached to the Motor by the Cam Retainer Retainer P N 388664 The Retainer rotated left or right provides for single or double depth operation see page 9 for Cam Settings MOTOR CARRIER SWITCH P N 388687 Two switches are located below the Motor Cam The outside switch is the motor carrier switch This switch holds the motor on though the vend cycle The motor stops when the motor Carrier switch drops out The inside Switch is the Start bypass Switch START BYPASS SWITCH P N 38868
19. Vendo INITIAL SET UP A UNPACKING Remove all plastic film cardboard and tape from the outside of the vendor Loosen any shipping devices used to secure interior parts during shipment back spacer shims or spacers To remove shipping boards from base raise vendor on a well stabilized lifting device Remove the leveling bolt which hold the boards in place and remove the boards Replace bolts to equal heights in the threaded holes Another method to remove shipping boards is to split the boards apart Using a pinch bar or a heavy screwdriver and hammer insert tool into the slots and force the board apart B POSITIONING AND LEVELING IMPORTANT Place the vendor in desired location at least 3 to 4 inches away from any rear obstruction This is for proper air flow through the refrigeration compartment The system requires front to rear air circulation for proper operation Level vendor with leveling bolts Be sure all four leveling bolts are supporting the machine C POWER SUPPLY CONNECTION CAUTION DO NOT USE AN EXTENSION CORD The Vendor s power requirements will vary depending upon the country it was purchased for To verify the power requirements of the Vendor check the serial plate locates on the hinge side of the door see figure 1 on page 3 The power requirements are listed on the serial plate To insure safe operation of the vendor the vendor s power supply must be a properly grounded and polarized outlet Before plugging
20. ea and then transfers it to a condenser where it is dissipated As heat is removed the refrigerated area cools In vending machines large quantities of the heat must be transferred rapidly economically and efficiently This process must be able to withstand continuous repetition without loss of refrigerant over an extended period The most common system used in the vending industry is the vapor compression or simple compression cycle system It consists of four basic element an evaporator a compressor a condenser and a pressure reducing restricted all part of a sealed system The compression system operates at two pressure levels the low evaporating pressure and the high condensing pressure The refrigerant acts as the transport medium in which heat is moved from the evaporator to the condenser at the condenser the heat is dissipated into the surrounding air The liquid refrigeration changes from a liquid to a vapor and back to a liquid again This change of state allows the refrigerant to absorb and rapidly discharge large quantities of heat efficiently BASIC VAPOR COMPRESSION SYSTEM CYCLE DESCRIBED In the evaporator the liquid refrigeration vaporizes This change occurs at a temperature enough to absorb heat from the refrigerated space The temperature of vaporization is controlled by the pressure maintained in the evaporator the higher the pressure the higher the vaporization point The compressor pumps the vapor from the
21. essary No 1 selection works No 2 Check No 2 section switch thru last does not replace if necessary This pattern can continues thru last selection switch as selection circuit goes from 1 to 2 to 3 etc to last One sold out switch of column selected inoperative replace switch replace switch Vend motor runs until two or Improper cam lobe adjustment Check Cam for proper three products are vended or arrangement of cam lobes see vend motors run continuously product set up guide Motor carrier switch not making Check lever for proper lever contact with cam lobe or switch positioning and freedom of movement Refrigeration unit will not run at No power to vendor Check power supply also check all service cord connections Thermostat open temperature Check thermostat Apply control insulated jumper across terminals if compressor starts replace thermostat Temperature control bulb out of Check that bulb is in air flow position Compressor will not start Overload Protector Inoperative Check overload apply insulated jumper across terminal if compressor starts replace overload Compressor will not start condenser fan motor running unit cool no power to POSSIBLE PROBLEM POSSIBLE CAUSE SERVICE SUGGESTION Compressor will not start Starting relay inoperative Check relay replace condenser fan motor running unit hot power to compressor Compressor inoperative Disconnect power to vendor remove a
22. freezing up too cold Adjust thermostat set initial set up of service manual compressor runs continuously necessar Adjust feeler bulb see initial set position up of service manual position or remove shroud Tighten bolt or replace Refrigeration base loose or bent S 36
23. h settings are used See page 10 for settings FIGURE 13 VEND MECHANISM ANTI TILT CLIP GATE GATE LINK A SOLDOUT LEVER N BUCKET GAGE BAR COUPLING MOTOR CARRIER SWITCH MOTOR CAM 5 11 Vendo VEND CYCLE Several operation take place during the Vend Cycle a purchase is made the cam and bucket rotate product is dispensed and reloaded The sequence of these operation change slightly when the column s depth setting is changed With the Single Depth Setting one purchase is made and the bucket is reloaded the Cam Sequence occurs once per bucket revolution With the Double Depth setting two purchase are made before the Bucket is reloaded the Cam Sequence occurs twice per bucket revolution PURCHASE SEQUENCE PS 1 Customer insert money PS 2 The Coinage Unit sends a signal energizing the Credit Relay This creates a path power for the Selection Switch PS 3 Customer presses a Selection Button PS 4 The chosen Selection Switch closes creating a path of power to energize a Vend Motor PS 5 The Vend Motor turns the Bucket and Cam PS 6 Product is Immediately dispensed CAM SEQUENCE See Figure 14 Double depth Setting Pictured CS 1 As the Motor turns the Cam the Start Bypass Switch falls into the low part of the cam This interrupts the power path to the Credit relay canceling credit CS 2 Simultaneously the Motor Carrier Switch is lifted to the high part of the cam This
24. inside a housing The compressor as a unit is mounted on the refrigeration base The base is mounted in the bottom of the vendor outside the sealed refrigeration space CONDENSER The condenser takes heat out of the high pressure vapor that it receive from the compressor As the vapor passes through the condenser it cools and returns to a liquid state The condenser is mounted to the refrigeration base near the front of the vendor It is easily accessible for cleaning DRIER The Drier is a molecular sieve strainer drier It removes water and solid particles from refrigerant liquid One side of the dryer is connected to the outlet line of the condenser the other side is connected to the capillary tube going to the evaporator S 28 Vendo REFRIGERATION PARTS DESCRIPTION CONTINUED CAPILLARY TUBE The capillary tube controls at a steady rate the flow of refrigerant liquid to the evaporator It has a very small inside diameter to keep pressure in the evaporator low while the pressure in condenser is high It is the connecting link between the condenser and evaporator EVAPORATOR The Evaporator is a heat transference device It removes the heat from the air in a refrigerated space transfers it to the refrigerant liquid This liquid evaporates into a vapor and is sucked out by the compressor The evaporator is mounted inside the refrigerated space of the cabinet directly below the delivery chute ACCUMULATOR The accumulator traps an
25. link causing the gate to rest against the product RS 6 As the product falls into the bucket the link returns to the locked position and the gate is closed RS 7 The product remaining in the column is caught by the closed gate keeping it above the bucket RS 8 Bucket stops product is Ready to vend FIGURE 15 RELOADING SEQUENCE Vendo CREDIT PARTS DESCRIPTION CREDIT RELAY P N 353343 The Credit Relay is located on the inside of the outer door above the coinage mechanism The relay contains two sets of contacts and a coil enclosed in a plastic dust cover The contacts make or break connections in the Vendors electrical circuits When power is applied to the coil the normally open contacts close and the normally closed contacts open the contacts will hold in this position as long as the coil is energized When the coil is not energized the contacts return to the deenergized position COIN MECHANISM The Coin Mechanism is purchased separately The Coin Mechanism verifies the coins inserted into the Vendor are good establishes credit provides change as needed and returns change if required Commonly used systems are the single price the four price and the dual price unit Feature common to these units are the C R E M function the Vend Switch function and the coin tube switch function The coin mechanis
26. ll leads from compressor check continuity from common start and to compressor case If continuity shows replace compressor Also Check from common to start using continuity or IHMS If meter fails to show reading replace compressor run replace overload if necessary Thermostat inoperative Check thermostat clean contacts with approved electrical cleaner Replace thermostat is necessary Compressor runs but cabinet Loss of refrigerant Replace refrigeration unit temperature warm Note any work of this nature done without express permission from the vendor company can void refrigeration unit Condenser fan not working Check circuit to run motor Replace motor Check for obstruction of fan blade Block or dirty condenser Check condenser vanes for obstruction lint or dirt Clean refer to initial installation in the also check for proper air flow service manual through refrigeration area Evaporator fan not working Check circuit to fan motor Replace motor also check for obstruction of fan blade Bad inner door seal Check for moisture on seal Adjust inner door as necessary see initial setup of service manual Replace door seal 5 35 POSSIBLE PROBLEM POSSIBLE CAUSE SERVICE SUGGESTION temperature warm set up of service manual Evaporator frosted over Water at base of evaporator Check for proper drainage unit such as plugged drain king in drain tube etc check door seal Product
27. m mounts to the coinage door by three screws NOTE ALL COIN MECHS TO BE PURCHASED SEPARATELY SINGLE PRICE COIN MECHANISM The Single price coin mechanism allows the Vendor one price for all products the price setting can be set as needed but all selections will be the one universal price to set the price refer to the booklet included with the coinage mechanism FOUR PRICE COIN MECHANISM The Four price coin mechanism allows the vendor up to four price settings for the Vendors various products The price setting can be set as needed refer to the booklet included with the coinage mechanism DUAL PRICE COIN MECHANISM The Dual price coin mechanism allows the Vendor two price settings for the Vendors various products The price settings can be set as needed refer to the booklet included with the coinage mechanism C R E M FUNCTION The C R E M Function enables the Coin Mechanism to accept coins allowing credit to the established The C R E M Function also halts the acceptance of coinage if credit has been established or power is unavailable to the coinage unit VEND SWITCH FUNCTION The Vend Switch Function temporarily energizes the Credit Relay Coil COIN TUBE SWITCH FUNCTION The Coin Tube Function turns on the Correct Change Lamp when the coin changer is low 5 14 Vendo BILL VALIDATORS Bill Validators are purchased separately The Bill Validator verifies the bills inserted into the Validator are good The Bill Valida
28. of burn out This will prevent damage to the ballast Check the product temperature for proper cooling Check evaporator drain for obstruction water in the evaporator area must drain to the condensate pan Empty condensate pan Clean the condenser free vanes of dirt lint etc Check evaporator fan s run normally Check the Compressor and condensate fan run normally Investigate any unusual sounds fan blades hitting something refrigeration lines rattling etc Clean coin acceptor Deposit all coinage accepted by the Vendor to check for proper operation of the coinage mechanism M Testthe Vendor and make a report on the problems mo o FA Il LUBRICATION GUIDE Lubricate indicated areas as directed on the chart below Every six months Top hinge of door hinge pin at Grade two high low the base of cabinet door latch temperature grease cam to cabinet strike T handle shaft amp latch As necessary Pivot area of bucket and gate Grade two high low temperature grease 5 31 Vendo CARE AND CLEANING A GENERAL PROCEDURE painted metal areas Wash Vendor with soap and water The exterior may be waxed with any good automobile wax FRESH PAINT SPLASHES GREASE GLAZING COMPOUND REMOVAL Before drying these element may be removed by rubbing lightly with grade Naphtha or equivalent grade solvent After removal use general cleaning procedure listed above as A LABELS AND STICKER REMOVAL The
29. r fan runs continuously As the air passes through the evaporator heat is draw from the air and transferred to the liquid refrigerate As the cooled air circulates through the vend stack heat is drawn from the product and transferred to the circulating air The heated air is again drawn through the evaporator where the heat is removed In the evaporator the liquid refrigerant draws heat from the circulating air As refrigerate receives heat it vaporizes The compressor pumps the vapor from the evaporator and compresses it increasing both and temperature The compressor forces the compressed vapor out through the discharge line and into the condenser The condenser fan pulls air through the condenser As the hot refrigerant vapor passes through the condenser tubes heat is drawn from the vapor This heat is dissipated into the passing air the air then exits out the back of the vendor As the refrigerant vapor in the condenser lines is cooled it returns to a liquid state From the condenser the liquid flows to the drier the drier removes any water and solid particles from the liquid refrigerant The cooled liquid refrigerant continues from the drier through the capillary tube to the evaporator The capillary tube steadies the flow rate of the refrigerant Its small inside diameter allows the pressure in the evaporator to remain low while the pressure in condenser is high The cool refrigerant in the evaporator draws heat from the circ
30. the vendor into the outlet test the outlet to confirm it will meet the vendors power requirements If the power supply of the outlet is different then power requirements of the vendor a transformer may be necessary If the power requirements are not properly met contact a licensed electrician and have the necessary correction made for more information contact a service representative see parts sales and service centers listed on page A 3 of the parts manual S 1 FIGURE 1 SERIAL PLATE LOCK CODING The safest method to code the lock is to remove it and secure it in a vise or similar tool The lock can also be recoded in the handle For the following steps refer to Figure 2 STEP 1 Insert key into lock Insert pin into hole in cap STEP 2 To release cap push pin in firmly and rotate key to right slot position Remove cap and key as one unit STEP 3 Using magnet end of loading tool remove all seven tumblers STEP 4 Slip pre loaded coder on lock Place loading tool into coder Coder and tool will mount in one direction only Press new tumblers firmly into place STEP 5 Remove coder and tool as one unit Check to insure that all tumblers are in place Replace lock cap STEP 6 Insert New key Press cap in and rotate key counter clockwise left to locked position 5 2 Vendo LOCKING CODE FIGURE 2 5 3 PLATE 8 COIN INSTRUCTI
31. tor sends a signal to the coin mechanism the coin mechanism establishes credit and gives change if necessary SEQUENCING RELAY Sequencing relays are used when the number of selections are less then the number of columns The Sequencing relay will vend two columns from the same selection button it vends alternately between the two columns When one column is empty the sequence vends singly from the remaining column LAM ELECTRICAL WIRE ENERGIZED LINE INACTIVE LINE MOMENTARILY ENERGIZED LINE A C INPUT LINE OMMON CRED C INPUT LINE ER BLACK CHANGER RECEPTACLE JUNC FIGURE 16 SYMBOL LEGEND 5 15 Vendo STANDBY PHASE For the following information refer to figure 17 In the Standby phase of phase of vending power is sent from L1 to the C R E M All Start Bypass Switch are switched to allow power from L1 to Pin 7 of the Credit Relay The Coil of the Credit Relay is not energized power can travel through Pin 7 to Pin 1 the Normally closed contacts A path of power is established to energize to C RE M FIGURE 17 CREDIT ESTABLISHED LAST SELECTION SELECTION 6 SWITCHES VEND MOTO EN e 5 SOLD DUT 2 Co Co LAMPS o LAM ENERGIZED LINE INACTIVE LINE MOMENTARILY ENERGIZED LINE
32. ulating air in the cabinet As the temperature in the cabinet drops the liquid in the thermostat feeler bulb cools and condensed the condensed liquid releases the pressure against the thermostat control bellows de actuating the temperature control switch The deactuated control switch turns off the compressor and condenser fan When the temperature in the cabinet rises above the thermostat s setting the compressor and the condenser fan engage again The refrigeration process is continuous as long as the compressor operates Vendo FIGURE 23 REFRIGERATION CYCLE COMPRESSOR ICTION Y DISCHARGE LOW PRESSURE SIDE HIGH PREASURE ACCUMULATOR IDE FN VAPOR VAPOI EVAPORATOI y dy CONDENSER kein gt 1 pz CO Me LIQUID LIQUID CAPILLARY RESTRICTION TUBE DRIER REFRIGERATION PARTS DESCRIPTION The Compressor condenser Drier Capillary Tube Evaporator and Accumulator are part of a sealed system refer to figure 23 These items are not available separately For the part number of the sealed refrigeration system refer to the common parts section of the manual COMPRESSOR The compressor takes in low pressure vapor and compresses it increasing both the pressure and the temperature The hot high pressure gas is forced out to the condenser The compressor and the motor that drives the compressor are sealed
33. y refrigerant liquid which did not boil off into a vapor before reaching the compressor The accumulator allows the refrigerant liquid to boil off as a vapor preventing damage to compressor it also prevents suction line sweating The accumulator is mounted in the suction line on the outline side of the evaporator FIGURE 24 REFRIGERATION SYSTEM EVAPORATOR N RESTRICTOR lt a APILLARY Vi 74 TUBE ul 717 ys SN y CUMULATOR Y K Ta APILLARY TUBE CONDENCER E SF ORATIO BASE ff N N SN 4 TEMPERATURE CONTRO A Us OMPRESSOR Z M No J OVERLOAD PROTECTOR R AND STARTING RELA NS CONDENCER FAN 5 29 Vendo The parts listed below are not part of the sealed refrigeration system and are available separately For part numbers see the refrigeration assembly in the common parts section of the manual CONDENSER FAN ASSEMBLY The condenser fan pulls cool air from outside the vendor through the condenser over the compressor and blows it out the back of the vendor This cool air removes excess heat from refrigerant in the condenser The condenser fan runs when the compressor is engaged The fan assembly is mounted on the refrigeration base between the condenser and compressor EVAPORATOR FAN ASSEMBLY The Evaporator fan pulls air from the front of the refrigerated space through the evaporator up the rear of the refrigerated space into the vend stack
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