Combo Serve HFD (Model 1) Technical Service Manual
Contents
1. Fans 3T Je 7 A gt S 1201218 Left Right as viewed from the back side controller side of the HFD 1184982e ECN 53153 8 1 11 102. HFD HFD 5 only Bottom Heater Shelf assemblies Plate Front 6 ES 9 Shelf edge gasket Gasket same each shelf E i 1 T W Shelf Assembly Connector Colors Connector Color White Description Shelf Asy Upper Left 1 1 fi Black Shelf Asy Middle Left Red left Green right Shelf Asy Bottom Shelf Yellow Shelf Asy Middle Right LA Blue Shelf Asy Upper Right e An Vertical slide rail same each side N Rear door and slides Controller Controller Membrane Pad See schematic for wiring harness part numbers Breaker switch Power cord 1184982e ECN 53153 8 1 11 Vendo s NDENVENDO AMERICA INC Combo Serve HFD HFDC00001 Combo Serve Front Door amp Shelf Parts Part Description 1200392 Left Door Assembly 1200392 1 Right Door Assembly 1185603 1 Frame Gasket Horizontal 2x 1185603 2 Frame Gasket Vertical 2x 1187405 Damper one each side 1202273 Extension Spring one each side 1199716 Rack Top Middle Shelf not shown 4x 1199728 Rack Bottom Shelf not shown 2x 1201311 Shelf Guard 4x O OND OR W DP 1184982e ECN 53153 8 1 11 5 Vendo s NDENVENDO AMERICA INC OPERATION Display and Keypad U Left Upper Right elf Time Power Button _ Shelf Timers LED Display Shelf Timers Power Button J Lower Left Shelf Timers SD card slot Hae aoe Middle Left Shelf Timers ame Suan Lower Right Shelf Timers Timer Setting and
3. Operation Note to help prevent keypad damage push keypad buttons only with finger or thumb do not use fingernail utensil tool pen or other object Circulation fans may be turned on or off by the switch at the top rear of the cabinet Normal Operation Pressing the power button turns the HFD on or off When controller is off all lamps heaters displays and indicators are off Timers When a timer is off pressing the timer button once sets the countdown timer to the value preprogrammed into the controller Pressing the timer button again within three seconds activates the timer adjustment mode and sets the timer to one hour Each successive press within three seconds adds one hour to the time up to four hours At four hours the next button press cycles the timer back to one hour again Once the timer is activated the LED next to the shelf timer button becomes green The display then reverts to HFD internal ambient temperature display While a timer is on pressing a timer button once displays the remaining time for 4 seconds then shelf temperature for 4 seconds and then the display reverts to the internal ambient temperature display At 14 minutes remaining time the LED blinks yellow When no time remains the LED blinks red plus a brief audible alarm sounds Pressing the timer button next to the blinking red LED clears the alarm and restarts the timer Holding down the Time button then pressing a timer key turns off th
4. right shelf thermistor error open circuit E66 E90 Unable to read SD card Error codes in italics reflect codes on some controllers Clear error codes by pressing any key except for E90 error Clearing an error code turns that shelf s heater off Clear the E90 error by unplugging the HFD plugging it in again and then pressing the power button SD Card Programming The SD card must be formatted in FAT32 preferably by Windows XP instead of Vista It must contain a single file and the file name does not matter 512MB or 1GB cards only The contents must be ASCII text as follows in exactly the format shown 1184982e ECN 53153 8 1 11 7 Vendo s NDENVENDO AMERICA INC Temperature and Timer Programming Format SV01 must be SV01 087A this is the date code month 08 year 7 product b L d A UL 235 2 00 1 00 Upper Left shelf set to 235 F left timer value right timer value ML 235 2 00 2 00 LL 220 1 00 2 00 UR 235 2 00 1 00 MR 235 2 00 2 00 LR 220 1 00 2 00 There can be no extra spaces or blank lines A line is terminated with a CR LF carriage return linefeed The controller will read the file and parse the information It expects to see this format and order of the file The only variables that are allowed to change are the filename menu code the temperature and timer values and the comment at the end of the file The controller shall be shipped from the factory with the default values above Temperatures must be 3 digits t
5. AMERICA INC SAFETY WARNINGS The HFD is for indoor use only Do not use near water or in condensing humidity To prevent electric shock or fire do not kink pull or pinch the power cord and insure no equipment is resting on the power cord If the power cord is damaged unplug and replace Do not connect with other plugs Do not use an extension cord When unplugging first turn off the power switch Then pull the plug at the end of the power cord not by pulling the power cord since the cord can be damaged overheat and cause a fire Do not spray water on the HFD It may cause an electric shock or fire Do not touch the power plug switches or other electrical parts with wet hands It can cause an electric shock Periodically check that the plug is pushed in all the way To prevent injuries due to falling objects liquid spills electric shock or fire do not place heavy objects or liquid filled objects on top of the HFD To prevent electric shock or fire do not use volatile or flammable products in or near the HFD When moving the HFD turn the HFD off unplug and allow the unit to cool To prevent glass breakage and injury do not push on the glass Also use proper equipment and lifting techniques Insure the product doesn t tip while it is being moved lf a lamp or any glass cracks or breaks turn off the power and discard all food in the HFD Replace lamp and or glass Remove all glass fragments Carefully inspect all surfa
6. Vendo s aNDENVENDO AMERICA INC HOT FOOD DISPLAY Technical Service Manual MODELS HFD000001 2 3 4 5 HFDCO00001 Table of Contents Commitment to Safety 2 Safety Warning ced PAN S isaac te ener narenesenat neat ereancce 4 ODET ANON irsgccavecess est arene cneerecoe 6 HFDCO00001 1184982e ECN 53153 8 1 11 1 Vendo s NDENVENDO AMERICA INC A COMMITMENT TO SAFETY The SandenVendo is committed to safety in every aspect of our product design SandenVendo is committed to alerting every user to the possible dangers involved in improper handling or maintenance of our equipment The servicing of any electrical or mechanical device involves potential hazards both to those servicing the equipment and to users of the equipment These hazards can arise because of improper maintenance techniques The purpose of this manual is to alert everyone servicing SandenVendo equipment of potentially hazardous areas and to provide basic safety guidelines for proper maintenance This manual contains various warnings that should be carefully read to minimize the risk of personal injury to service personnel This manual also contains service information to insure that proper methods are followed to avoid damaging the Hot Food Display HFD or making it unsafe It is also important to understand these warnings are not exhaustive SandenVendo could not possibly know evaluate or advise of all of the conceivabl
7. ces corners and gaskets to insure all glass fragments have been removed before returning HFD to service Keep HFD out of direct sunlight and away from heat sources Do not hang from the door this may cause injury or electric shock Turn off and unplug HFD before servicing and let HFD cool before cleaning or servicing Use proper tools while servicing Use only authorized replacement parts The HFD temperatures are factory set to meet NSF food safety requirements Changing temperature settings may adversely impact food safety The lamps are an integral part of the food heating system If a lamp is not illuminated the temperatures may not be maintained for food safety 1184982e ECN 53153 8 1 11 3 Vendo s NDENVENDO AMERICA INC PARTS Front door gaskets Part 1158489 1158477 1158491 1153225 1187519 1173478 1173508 1173455 1173522 1173492 1158685 1158696 1159513 1159525 1162225 1161921 1194238 1158673 1158969 1153213 1159604 Description Gasket Door Side Gasket Door Upper Gasket Door Lower Controller Heater Kit not shown Shelf Assembly Upper Left Shelf Assembly Middle Left Shelf Assembly Bottom Shelf Assembly Middle Right Shelf Assembly Upper Right Gasket A Gasket B Lamp Socket Xenon Heating Lamp Power Cord Plug Circuit Breaker 15 Amp Rear Door HFD Slide Rail Lower Horizontal Slide Rail Side Vertical Controller Membrane Pad Shelf Edge Gasket 1180812 Fan
8. e timer 1184982e ECN 53153 8 1 11 6 Vendo s NDENVENDO AMERICA INC Converting Temperature from F to C or C to F 1 Controller must be off 2 While holding down the TIME button press the On Off button Software revision will be displayed Press and release the TIME button once to change from F to C or C to F Wait 5 seconds Press any timer key once to verify the change Press the On Off button to turn the unit on Verify the display indicates the desired temperature units F or C Oo O1 O1 BR OW Front Door lf the front door is opened the controller turns off only the lights The display reads OPEn After closing the front door the lights turn on and the display reverts to internal ambient temperature Heater Temperature Adjustment With controller power off hold down the Time button then press amp release the Power button The left timer button for a shelf decreases the temperature setpoint The right timer button for a shelf increases the temperature setpoint To exit heater temperature adjustment mode press the power button Error Codes E30 Inside ambient thermistor error open circuit E60 Upper left shelf thermistor error open circuit E67 E61 Middle left shelf thermistor error open circuit E64 E62 Lower left shelf thermistor error open circuit E67 E63 Upper right shelf thermistor error open circuit E60 E64 Middle right shelf thermistor error open circuit E63 E65 Lower
9. e ways in which service might be done nor can SandenVendo predict all of the possible hazardous results The safety precautions outlined in this manual provide the basis for an effective safety program Use these precautions along with the service manual when installing or servicing the HFD We strongly recommend a similar commitment to safety by every servicing organization Only properly trained personnel should have access to the interior of the machine This will minimize the potential hazards that are inherent in electrical and mechanical devices SandenVendo has no control over the machine once it leaves the premises It is the owner or lessors responsibility to maintain the Hot Food Display in a safe condition Follow all Safety Rules and Safety Warnings in this manual If you have any questions please contact the Technical Services Department of SandenVendo SAFETY RULES e Read the Safety Warnings before installation or service Test for proper grounding before installing to reduce the risk of electrical shock and fire Turn off power switch and disconnect power cord from wall outlet before servicing Use only fully trained service technicians for Power On servicing Use adequate equipment when moving the HFD Use only authorized replacement parts Be aware of inherent dangers in rocking or tipping the HFD Always turn power off before plugging or unplugging HFD to wall outlet 1184982e ECN 53153 8 1 11 2 Vendo s NDENVENDO
10. imer hour value one digit and timer minute value two digits Any heater circuit s and associated timers may be disabled by entering the following in the programming file example UL x Loading the SD Card Program in the HFD controller With the HFD on Insert the SD card in the controller s SD card slot until it clicks in place The HFD display with show dashes while the program is loading Loading will take about 15 to 30 seconds Once loaded the display will revert to internal ambient temperature Press dont pull the card to remove it from the slot eee ea Controller Connectors Modular three prong receptacle 115 VAC power Left and right below are viewed from the front or controller side of the Mini HFD J1 connector Heater and light power J2 connector Sensor signals J1 1 Lower Right Shelf Heater J2 1 Door Open Signal J1 2 Lower Right Shelf Heater J2 2 Door Open Signal J1 3 Middle Right Shelf Heater J2 3 Inside Case Ambient Thermistor J1 4 Middle Right Shelf Heater J2 4 Inside Case Ambient Thermistor J1 5 Upper Right Shelf Heater J2 5 Lower Right Shelf Thermistor J1 6 Upper Right Shelf Heater J2 6 Lower Right Shelf Thermistor J1 7 Lower Left Shelf Heater J2 7 Middle Right Shelf Thermistor J1 8 Lower Left Shelf Heater J2 8 Middle Right Shelf Thermistor J1 9 Middle Left Shelf Heater J2 9 Upper Right Shelf Thermistor J1 10 Middle Left Shelf Heater J2 10 Up
11. per Right Shelf Thermistor J1 11 Upper Left Shelf Heater J2 11 Lower Left Shelf Thermistor J1 12 Upper Left Shelf Heater J2 12 Lower Left Shelf Thermistor J1 13 Lights J2 13 Middle Left Shelf Thermistor J1 14 Lights J2 14 Middle Left Shelf Thermistor J2 15 Upper Left Shelf Thermistor J2 16 Upper Left Shelf Thermistor 1184982e ECN 53153 8 1 11 8 Vendo s NDENVENDO AMERICA INC TROUBLESHOOTING Power cord unplugged Plug HFD cord in outlet No power at outlet Check power output at outlet 115VAC MN Remove lower stainless steel panel and check breaker Check resistance across plug ensure the breaker is on measure resistance across plug terminal line and neutral 160 ohms 2 Controller should read OPEn Shut front glass door press power button on controller to initialize Check at terminal for resistance of One or more Xenon 44 ohms 2 lamps off Bulb blown Check to ensure bulb is securely installed Replace blown bulb s HFD needs approx 30 minutes to reach temperature at default setting Check plate temperature at controller see controller operation Check at terminal for resistance of 44 ohms 2 Check to ensure bulb is securely installed Replace blown bulb s Fuse blown on Remove controller and check controller fuses Remove controller and check all Wires disconnected connections at controller Heater plate not heating Check all terminal connections Check
12. resistance on terminals from heater plates Resistance Power cord wire disconnected Unit does not turn on Front glass door open One or more heater plates not reaching temperature HFD display ambient does not reach 150 F One or more Xenon lamp not functioning Failed heating element should be approximately 94 ohms 1184982e ECN 53153 8 1 11 9 Vendo s NDENVENDO AMERICA INC onz E SCHEMATIC Is nm lt Oe 1087074 Button BO Ze SS 1163898 Harness Controller HFD 3 4 5 7 een 1202145 Harness Controller HFDC only 1202224 Harness E aad Remote On Off o a a 88 i E E 1202224 Harness aA E 5 Adapter Remote F ch Sfi E GA TE z i do On Off 9 mp R H E A oe 4 4 TEETE ae a i f i Mi E 5 DG MEI F za Ha fE uam WSOWL ALON 1159408 Light Harness Top 2x 1187878 Harness Fan with Switch 1180812 Fan 2x 1159574 Light Harness Shelf 4x KINO LO000304H aNY S0000004H NO ATaWASSY NW Ta EFSF 8 6 OT Ter et FT HJ TI0HLNOJ PRH H Nw HOLIMS Hyd dW MONAX 1Te amp FS 9 d B 6 OT TP eT PT STS re ss eee eee Z m am za D i gg g i E ua ll i BLH F aac s Fuses a g at m a F1 Upper Left Shelf az b2 Ba AB F2 Middle Left Shelf o zm F3 Lower Left Shelf eE F4 Upper Right Shelf j pS F5 Middle Left Shelf S me F6 Lower Right Shelf ai F7 Lamps
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