SERVICE MANUAL HEATED LANDING ZONE (HLZ 18
Contents
1. COMPUTER Be Sg Hs US Beg Me ch Ww qedeqe Vv Vv NA 1 6C GRN YLW 7 AC ORG 16C xc wer ec NL AIR RTD 5 iu NS RoC oU 07 HIGH LIMIT BRN LJ RED 2 PLATE RTD AIR HEATER WHT 12V E Ws LOAD BLK f Y lam f 1v aM M o KC 2C RED 4 PLATE HEATER a e kK 320 O BLK COM 208 240V P E PATE SMS T Ae Ge Wor BLOWER AIR HEAT zt RELAY HYPOT E RELAY EST p 25C BLK od GRN m L L EST POINT 240V OPTION NS Jg PLUG UNUSED WIRE w MALE PUSH ON M 208V OPTION 28C RED FUSE H 21C WHT ol BLOCK T LATCH E RELAY 20C BLK les PUL x ETT m ToP D E E DIE DF C BLK LATE THERMOCOUPLE a ON TEST RED WIRE dL PLUGS NEGATIVE POWER CORD AIR THERMOCOUPLE BOTTOM INSTALL IN BOTTOM HOLES OF RTD m Jur THERMOCOUPLE BRACKET Frymaster L L C 8700 Line Avenue Shrev2. Printed in the United States Service Hotline Page 10 1 800 24 FRYER 9 5 Opening the Air Delivery Tower a he air thermocouple and air RTD are located in the air delivery tower access them the front air delivery assembly must be removed b Insert a 5 16 nut driver through the front air delivery assembly access holes and turn the nuts counterclockwise to loosen Do not remove the nuts Grab the bottom flange of the front air delivery push upwards and pull towards you Be careful there are two tabs on the front air delivery bottom that must clear the heater plate to allow removal of the front air delivery Components in the rear tower are accessed by loosening two nuts one under each end of the overhang 9 6 Replacing Air Thermocouple and Air RTD Probe a Follow procedures in section 9 3 to access the Air Delivery tower components b Cut old lead wires close to the Dd ae faulty air thermocouple or Air RTD Air Thermocouple Air RTD Probe Probe Disconnect lead wires at the test plug Leave lead wires in place for now c Remove the faulty Air Thermocouple or Air RTD Probe from the bracket d Install the replacement Air Thermocouple or Air RTD Probe into the bracket e Attach the new lead wires to the old lead wires on the Air Thermocouple or Air RTD Probe on the bracket side of unit Grasp the old leads at the test plug and gently pull the leads towards you f Once the new lead wires have bee
3. Authorized Factory Service Center within 60 days for credit After 60 days no credit will be allowed WARRANTY EXCLUSIONS This warranty does not cover equipment which has been damaged due to misuse abuse alteration or accident such as e improper or unauthorized repair e failure to follow proper installation instructions and or scheduled maintenance procedures as prescribed in your MRC cards improper maintenance damage in shipment abnormal use removal alteration or obliteration of the rating plate This warranty also does not cover e transportation or travel over 100 miles 160 km 50 miles 80 km each way or travel time over two 2 hours e overtime or holiday charges e consequential damages the cost of repairing or replacing other property which is damaged loss of time profits use or any other incidental damages of any kind There are no implied warranties or merchantability or fitness for any particular use or purpose For international warranty the above procedures apply except that the customer is responsible for freight and duty charges 2 PARTS ORDERING AND SERVICE INFORMATION Parts orders may be placed directly with your local Frymaster Factory Authorized Servicer FAS Distributor A list of Frymaster FASC Distributors is posted at WWW frymaster com If you do not have access to this list please contact the Frymaster Service Department at 1 800 24 FRYER or 1 318 865 1711 To speed up your order the foll
4. HLZ COMPUTER OPERATION AND HAZARD AND MUST BE PLUGGED INTO PROGRAMMING Section 7 for proper setup and A PROPERLY GROUNDED operation of the computer RECEPTACLE DO NOT CUT OR REMOVE THE GROUNDING PRONG 3 Place product in the HLZ in accordance with the FROM THIS PLUG restaurant s established procedures 1 Plug the unit into the power source 4 CLOSING When closing the store remove all product from the HLZ and perform daily preventive maintenance in accordance with the MRC Turn the computer OFF Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 3 1 800 24 FRYER 6 HLZ MODEL COMPONENT IDENTIFICATION Heated air flows Heater from the air f Plate Landing heater blower Zone and heat rises from the heater plate Heater Plate Calibration Socket Air Heater M Calibration Socket HLZ Computer Power Cord A look at the flow of T heated air around the HLZ E EC Blower Assembly Heater plate Hs Air Heater Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 4 1 800 24 FRYER 7 HLZ COMPUTER OPERATION AND PROGRAMMING Display Air Heater Temperature 4 Switch 4 Frymaster i Chec
5. OR REPLACE ANY COMPONENT OF THE HLZ SERIES UNLESS ALL POWER TO THE UNIT HAS BEEN DISCONNECTED USE CAUTION WHEN SETTING UP OPERATING OR CLEANING THE HEATED LANDING ZONE TO AVOID CONTACT WITH HEATED SURFACES HAZARD COMMUNICATION STANDARD HCS THE PROCEDURES IN THIS MANUAL INCLUDE THE USE OF CHEMICAL PRODUCTS THESE CHEMICAL PRODUCTS WILL BE PRINTED IN BOLD FACE FOLLOWED BY THE ABBREVIATION HCS IN THE TEXT PORTION OF THE PROCEDURE SEE THE HAZARD COMMUNICATION STANDARD HCS MANUAL FOR THE APPROPRIATE MATERIAL SAFETY DATA SHEET S MSDS Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline 1 800 24 FRYER 1 WARRANTY STATEMENT The Frymaster Corporation makes the following limited warranties to the original purchaser only for this equipment and replacement parts WARRANTY PROVISIONS HEATED LANDING ZONE A The Frymaster Corporation warrants all components against defects in material and workmanship for a period of 2 years B All parts with the exception of fuses are warranted for 1 year after installation date of cabinet C If any parts except fuses become defective during the first year after installation date Frymaster will also pay straight time labor costs to replace the part plus up to 100 miles 160 km of travel 50 miles 80 km each way PARTS RETURN A All defective in warranty parts must be returned to a Frymaster
6. the cowl assembly Test fit the cowl assembly to see if a gap is visible once the cowl assembly is properly seated If a gap remains apply a second gasket to create a better seal reinstall the cowl assembly E lt LI d T ry 4 E Y m Clean surface area thoroughly Apply gasket or sealant along this edge Remove any old adhesive Apply new gasket along bottom edge of the front air delivery panel lest fit the air delivery assembly to see if a gap is visible once the assembly is properly seated lf a gap remains apply a second gasket to create a better seal Make sure the brackets on the back side of the front air delivery assembly slide up and under the nuts on the back air delivery mounting screws see figure 9 8 Once the front air delivery tabs clear the heater plate and the front air delivery is seated tighten the mounting screws to pull the front air delivery flush against the back air delivery assembly An air seal is created between the lower sections of the front air delivery and back air delivery assemblies This seal forces the heated air up the rear and then down the front side of the front air delivery assembly After reinstalling the air delivery tower reseal around the heater plate with RTV 108 silicone rubber compound PN 811 0511 Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United
7. INTERIOR VEW OF AN HEZ pote REI pee utt Scent draft 9 Os PROCEDURE ease ER 11 1G DIAGNOSTIC TES RS saa cm 15 WIRING DIAGRAM MEUM NEM ILE quU I MM 18 Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline 1 800 24 FRYER 819 5659 08 2015 NOTICE IF DURING THE WARRANTY PERIOD THE CUSTOMER USES A PART FOR THIS MANITOWOC EQUIPMENT OTHER THAN AN UNMODIFIED NEW OR RECYCLED PART PURCHASED DIRECTLY FROM FRYMASTER DEAN OR ANY OF ITS AUTHORIZED SERVICE CENTERS AND OR THE PART BEING USED IS MODIFIED FROM ITS ORIGINAL CONFIGURATION THIS WARRANTY WILL BE VOID FURTHER FRYMASTER DEAN AND ITS AFFILIATES WILL NOT BE LIABLE FOR ANY CLAIMS DAMAGES OR EXPENSES INCURRED BY THE CUSTOMER WHICH ARISE DIRECTLY OR INDIRECTLY IN WHOLE OR IN PART DUE TO THE INSTALLATION OF ANY MODIFIED PART AND OR PART RECEIVED FROM AN UNAUTHORIZED SERVICE CENTER THIS SERVICE MANUAL SUPERCEDES ALL PREVIOUS EDITIONS OF THE HLZ SERVICE MANUAL FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE DO NOT OPERATE OR SERVICE THE HLZ SERIES WITHOUT FIRST READING THIS MANUAL DO NOT OPERATE THE HLZ SERIES UNLESS IT HAS BEEN PROPERLY INSTALLED AND CHECKED DO NOT OPERATE THE HLZ SERIES UNLESS ALL SERVICE AND ACCESS PANELS ARE IN PLACE AND PROPERLY SECURED DO NOT ATTEMPT TO REPAIR
8. SERVICE MANUAL HEATED LANDING ZONE HLZ 18 AND HLZ 22 This equipment chapter is to be inserted in the Equipment Manual MANUFACTURED BY FRYMASTER L L C 8700 Line Avenue SHREVEPORT LOUISIANA 71106 PHONE 1 318 865 1711 1 800 24 FRYER 1 WARRANTY STATEMENT 1 1 1 WARRANTY PROVISIONS HEATED LANDING ZONE seen nter 1 po PART REPOR N ecce RE Ru EIER SR ULM 1 159 WARRANTY EXCEUSIONS nta ie iiec eee ato lesen a 1 2 PARTS ORDERING AND SERVICE INFORMATION eeeeeeeeeeeee eene nennen nnns 2 9 HEATED EANDING ZONE A N 3 Az INSTALLATION SETUP Rise cp eid ae ede eu ko uad as Fue oa 3 5 OPERATION 3 6 HLZ MODEL COMPONENT IDENTIFICATION eeeeeeeeeeern nennen 4 7 HLZ COMPUTER OPERATION AND PROGRAMMING eene 5 71 PROGRAMMING TEMPERATURE olen cele 5 2 OPERATION GL cd MEUM MU E UL MI E INEO ME M I E 6 HLZ OPERATOR TROUBLESHOOTING ra dign Sena 8 SERVICE INFORMATION 9 OARS ENS Tics und C Ra RM Iu EI qu E EIU MMC 9 SO
9. States Service Hotline Page 14 1 800 24 FRYER 10 Diagnostic Tests for HLZ 10 1 Relays The following tests are conducted with power applied Symptom Air heater or plate heater will not heat Symptom Air heater or plate heater over heats NOTE Unit will display PROB if overheated The probes are producing out of range resistance Allow unit to cool before checking probes Tests Viewed from the front of the HLZ the air heater relay is nearest the heater plate the heater plate relay is nearest the front of the unit e With power supplied and computer turned on measure DC voltage across input terminals of relay With computer calling for heat dot illuminated on display the reading should be approximately 12 VDC Failure to measure DC voltage points to a problem with the computer or connection e With power supplied and computer tu terminals of relay With computer calling rned on measure AC voltage across output for heat dot illuminated in display the reading should be 6 9 VAC Reading line voltage with the computer calling for heat indicates a failure of the computer to supply the necessary DC voltage to close the relay or a failure of the relay 10 2 Computer Symptom Faulty or no display Symptom No response to buttons Tests Input power The pins in the computer plug are counted bottom to e With the computer disconnected check for top left to right starting with the pin marked b
10. ed within 15 days after Ps receipt of the unit Computer Make sure that the unit is placed on an even surface and d that the area surrounding the HLZ is free of clutter that would interfere with air flow INSTALL OPTIONAL BURGER BUMPER Units built before 10 98 The burger bumper may be placed on either side of the HLZ to prevent pass through of product Burger bumpers are provided by the KES See figure 1 INSTALL FILTER SCREEN Units built after 10 98 The filter screen is design to prevent debris from entering the Computer Cowl Assembly and clogging the blower filter screen snaps into place on rear of the assembly Simply fit the part on to the vent opening of the _ air intake tower computer cowl assembly The filter screen will snap into position If equipped with an optional holding screw tighten screw to pull the filter screen snug into position If the 240 VAC model is operated on 208 VAC the unit will heat slowly and POWER REQUIREMENTS may not reach maximum temperature the 208 VAC model is operated on 240 e Voltage Two models are available 208 VAC and 240 VAC component damage is probable e Frequency 60 Hz To ensure proper operation the power source should match the voltage on the Single Phase rating plate on the bottom of the HLZ e 20 Service OPERATION THIS APPLIANCE IS EQUIPPED WITH GROUNDING PLUG FOR YOUR PROTECTION AGAINST SHOCK 2 See
11. een pins 1 and O It should be between 79 and 89 ohms 10 9 Blower Symptom No airflow Symptom Unit overheats displays PROB The latching relay is positioned in the HLZ with the 0 and 1 terminals facing the front of the unit Tests Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline 1 800 24 FRYER Page 17 Remove power from unit On 208V units disconnect black and white wires connecting e blower to heat and latching relays The resistance between the wires should be between 55 and 65 ohms e Remove power from unit On 240V units disconnect red and white wires connecting blower to heat and latching relays The resistance between the wires should be between 62 and 72 ohms 10 10 Hi limit Symptom No display on controller Test The hi limit is in the 12 volt output from the transformer Remove power from unit Disconnect the white braided lead from the wire leading from pin 1 on the computer plug Disconnect the white braided lead from the 12 volt side of the transformer Check continuity in the hi limit circuit 11 Wiring Diagram
12. eport Louisiana 71106 318 865 1711 FAX 318 862 2394 Service Hotline Page 18 Printed in the United States 1 800 24 FRYER
13. g Temperature Switch once To check the setpoint temperature of a heater press the switch twice an indicator will light when the setpoint is displayed Setpoint 2 2 Temperature Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 1 800 24 FRYER 8 Operator Troubleshooting Guide No power Circuit breaker out No computer display no flow from ow voltage air tower Bad fuse Bad transformer Hi limit out No flow from air tower Bad latching relay RTD probe has failed solate failed component by checking temperature of air and heater plate with the temperature After 20 minutes of operation display keys on the computer The plate computer display shows PROB temperature should be within 15 F of setpoint The air heat should be within 25 F of setpoint If both temperatures are good the computer is likely bad After 20 minutes of operation Plate heater plate heater relay or RTD computer display shows HI are faulty After 20 minutes of operation Air heater air heater relay or RTD are computer display shows LO faulty Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 8 1 800 24 FRYER 9 SERVICE INFORMATION 9 1 PARTS LIST Description Transformer 208V 240V 12V Transformer 230V CE Air Heater 208V Air Heate
14. hesive more pliable frame to prevent rebounding while servicing When reinstalling the heater plate apply new acrylic tape to the HLZ chassis first Then position the heater plate standing on its side against the back air delivery assembly The heater plate leads should be coming off the top edge of the heater plate Once the heater plate is aligned properly with the HLZ chassis gently lower the heater plate until the plate end with the lead wires is approximately 2 inches from the chassis Feed the leads through the opening in the chassis wall Finish lowering the heater plate into place and connect the heater plate lead Wires Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Service Hotline Page 12 1 800 24 FRYER 9 8 Replacing Hi limit a Follow steps in Accessing plate and air heaters 9 7 b Remove the shield over the air heater c Remove the brace on the left side of the base assembly exposing the wire raceway d Remove the grommets the hi limit E CU wiring passes through e Bos A e Remove the existing hi limit and pull a Tee DN wiring through cabinet The wires for the hi limit are routed through the hole used by the RTD wiring Slip the wires into slot shown above and into the hole han 4 1 f Mount the hi limit on the the spacers providing a stand off from the panel g Push the wires through the raceway t
15. k or Program Switch Heater Plate Temperature Switch 1 ON OFF Switch m Down Switch 2 Up Switch 3 7 1 Programming Temperature You are able to program the setpoint temperature of both the air heater and the heater plate via the computer interface The heater plate factory default is set to the McDonald s standard of 160 F The air heater factory default is set to the McDonald s standard of 220 F If the factory default temperature settings are acceptable skip to Section 7 2 Page 6 Ensure that the HLZ computer is in the OFF position nothing in the display Press the check switch and enter the code 1 2 3 3 The numerals in the upper right hand corner represent the key number f m 1 Press then Ejj e in order The display will read SET and the LEDs on both the Heater Plate Switch 1 and the Air Heater owitch 4 will light Press the switch that corresponds to the heater you wish to program Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 5 1 800 24 FRYER 1 4 Display reads SET j and L ED s light A Press i to program the heater plate or to program the air heater Press the Up and Down Arrow Keys to achieve the desired set point temperature then press the Check Switch once Both heater LEDs will again light Press D Or to get desired setpoint then press to lock the temperat
16. n pulled through disconnect the old lead wires and attach the new leads to the test plug Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 11 1 800 24 FRYER g Go to step 9 3 2 and reassemble the air delivery tower 9 7 Accessing the Plate and Air Heaters a Printed in the United States Use the following method to remove the plate heater assembly or access the compartment underneath the plate heater Hemove the cowl assembly per steps 9 3 After cutting the acrylic adhesive between the heater plate and the HLZ chassis use a screwdriver to gently lift the heater plate Then remove the air delivery assembly following steps in 9 5 Insert a thin sharp knife i e Exacto type between the heater plate and the HLZ chassis Carefully cut the silicon adhesive between the heater plate and the chassis Lift the heater plate by prying up one end of the heater plate away from the HLZ chassis The plate is rT UT ys eee EDIT Ww F z Gently lift the heater plate which may still be stuck to the adhesive Apply new acrylic tape to the chassis before reinstalling the heater plate held in place by an acrylic tape It will be difficult to NOTE A hot platen is break the bond between the heater plate and easier to remove The chassis Remove acrylic tape from the heater plate and heat makes the ad
17. oward the transformer on the controller side of the HLZ h Slip the wires from the hi limit into the area occupied by the transformer The wire is routed from the air cowling through the raceway emerging at the transformer i Slip the hi limit wires into the removed grommets and snap back into place j Plug the black wire leading from pin 1 in the computer plug into the terminal of the hi limit k Plug the other hi limit terminal onto the transformer l Ensure all connections are tight m Retie the wiring assembly n Replace the brace which forms the wire raceway o Replace the metal shield over the air heater Clear away the old adhesive holding the heater plate in place Put the single back adhesive in place adhesive side down and position the heater plate r Ensure the heater plate s ground wire is reconnected s Plug the 15 pin connector into the computer and replace the controller housing t Reassemble unit as described in step 9 9 below Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 13 1 800 24 FRYER 9 9 Reinstalling the Cowl Assembly and Air Delivery Assembly Gasket Installation a Cowl Assembly 1 2 b Air Delivery Tower Assembly 1 2 3 4 Plug in the computer harness and Clean surface area thoroughly Remove any old adhesive Apply a new gasket to bottom edge of
18. owing information is required Model Number Serial Number Voltage Item Part Number Quantity Needed Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 1 1 800 24 FRYER Service may be obtained by contacting your local Frymaster Authorized Servicer Distributor Service information may be obtained by calling the Frymaster Service Department The following information will be needed in order to assist you quickly and efficiently Model Number Serial Number Nature of the Problem Also any other information which may be helpful in solving your service problem RETAIN AND STORE THIS MANUAL IN THE EQUIPMENT MANUAL FOR FUTURE USE Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 2 1 800 24 FRYER 3 HEATED LANDING ZONE The Heated Landing Zone or HLZ is designed to hold assembled sandwiches By circulating heated air evenly across the open staging area the Heated Landing Zone keeps sandwiches hot without drying or cooking The Heated Landing Zone meets all McDonald s standards for safety efficiency food safety and cleanliness 4 INSTALLATION SETUP Optional Burger Bumper Installed unit built before 10 98 Upon arrival inspect the HLZ for concealed damage m pem Immediately report any damage to the delivering freight C company Claims must be fil
19. r 230V CE Air Heater 240V Shield HLZ Heater Air RTD Probe Bracket RTD Thermocouple Delivery Air Back W A Air Thermocouple HLZ 22 Plate Heater with RTD and Thermocouple 208V 240V 22 x15 5 HLZ 18 Plate Heater with RTD and Thermocouple 208 240V 22 x12 Line Filter CE Plug Assembly Computer Air Relay SS Service Plate Relay SS Service Relay Latching Blower 230V CE Part Number 807 0979 807 3185 826 1549 807 3630 807 3011 900 8486 807 3036 900 83665 823 2741 807 3043 806 92385 806 9239 807 2818 806 9636 826 2038 826 1958 807 3021 807 3691 Blower 208V 240V Hi Limit Fuse Block Fuse 20A Cordset Twist Lock HLZ Cordset CE Cordset Japanese Cordset China Bushing Right Angle Strain Relief Adapter Right Angle Strain Relief Wshr RTV 108 Silicone Rubber Gasket HLZ Plate Cowl Filter Screen Acrylic Tape Controller Assembly HLZ McD Controller Assembly SHS Generic Cowl Assembly Cowl Tinnerman Clips Front Delivery Air W A Lug Grounding 14 GA Pad HLZ Leg 9 2 Interior view of an HLZ Cowl Assembly removed HLZ with heater plate elevated Solid state relays E Transformer and fuses 80 3637 80 3631 807 2820 807 2819 80 3020 807 1696 80 3419 807 4409 807 3477 200 0965 811 0511 816 0418 810 1724 811 1042 826 2535 812 2277 823 2745 809 0448 823 2742 807 2972 826 1561 Frymaster L L C 8700 Line Avenue Sh
20. reveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Service Hotline Page 9 1 800 24 FRYER Printed in the United States 9 3 Repair Procedures 1 Accessing the interior of the HLZ Set up for testing a Disconnect power cord from outlet b Turn unit on its side Remove the five access screws located on the bottom of the unit c Then set the unit back down on its base Place paper E cs towels on the heater plate to protect it from scratching Remove the cowl assembly and lay the cow assembly is held on by five cowl on the heater plate while troubleshooting removed from the Air heater Heater plate relay relay NES a lt 4 5 18 js js The relays are best replaced by removing the plate Heater Plate Front of HLZ that holds them in place Two 5 16 nuts hold the plate in place 9 4 Replacing Solid State Relays a Avoid miswiring Examine the terminals carefully and take notes to avoid miswiring b Remove the plate holding the relay assembly The nuts holding the relays in place are easier to reach with the assembly out of the unit Hemove the two nuts holding relays to plate Apply heat sink compound and install new relay e Reverse this procedure to reinstall Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394
21. th air temperature on the resistance chart in this section Also check for short to ground A chaffed wire shorting to the chassis can produce resistance readings within proper range Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 16 1 800 24 FRYER 10 6 Plate Heater Symptom No heat when voltage is applied Symptom Overheats Tests e With power removed from the HLZ measure resistance between terminal 4 white wires on the latching relay and terminal 4 on the plate heater relay The reading should be 215 to 230 ohms on an HLZ 18 150 180 ohms on an HLZ 22 Also check for continuity to the chassis Resistance seen there indicates a chaffed or shorted wire 10 7 Air Heater Symptom No heat when voltage is applied Symptom Overheats Test e With power removed from the HLZ measure resistance between pin 4 white wire on the latching relay and terminal 4 on the air heater relay The reading should be between 18 and 26 ohms on a 208V unit and 25 and 33 ohms on a 240V unit Also check for continuity to the chassis Resistance seen there indicates a chaffed or shorted wire 10 8 Latching Relay Symptom Computer calls for heat dot illuminated No heat from plate and blower doesn t operate Test e With power removed from the HLZ and the wire removed from pin 1 or 0 of the latching relay measure resistance betw
22. ure in If you are finished with programming both heaters press the Check Switch again to store the programmed setpoints and exit the programming mode OH to change the setpoint temperature for the other heater press the corresponding Heater Switch 1 or 4 Program as described in otep 4 When finished press again to exit programming mode o change the other heater press to A program the heater plate or to program the air heater then go to Step 4 for instructions 7 2 Operation 1 Press the ON OFF switch to the ON position the display will light and cycle through an initialization sequence The display will read LO until the air heater and heater plate are within 15 F of setpoint It will take approximately 10 minutes for the HLZ to achieve operating temperature Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 FAX 318 862 2394 Printed in the United States Service Hotline Page 6 1 800 24 FRYER Press L to turn on the computer The display will read LO until both heaters are within 15 F of setpoint NOTE A small LED will light in the display when either the heater plate or air heater is energized Air Heater Heater Plate When the HLZ is ready for operation the display reads REdY ready Place product in the HLZ in accordance with the restaurant s established procedures NOTE To check the actual temperature of a heater press the correspondin
23. y a 12VAC between pins 1 and 3 protruding ridge Frymaster L L C 8700 Line Avenue Shreveport Louisiana 71106 318 865 1711 Printed in the United States 1 FAX 318 862 2394 Service Hotline Page 15 800 24 FRYER Output power e With the computer plugged in and turned on check for 14 VDC from pin 5 on the computer Resistance Chart Centegrade Fahrenheit Ohms terminal to ground 10 3 Transformer Symptom Unit has no display Test e Line voltage should be measured across the input side of the transformer 12VAC should be measured across the output side 10 4 Plate Heater RTD The following tests are conducted without power applied Symptom Unit displays Probe Actual plate temp is not within 5 F of setpoint Temperature must be taken from thermocouple built into unit Test e With power removed from the HLZ measure resistance between pins 9 and 13 on the computer plug and compare readings to listing on the resistance chart With the unit cool the resistance reading should approximate the Resistance chart resistance shown on the chart for the room temperature Also check for short to ground A chatfed wire shorting to the chassis can produce resistance readings within proper range 10 5 Air RTD Symptom Unit displays Probe Actual air temp is not within 5 F of setpoint Test e With power removed from the HLZ measure resistance between pins 14 and 15 on the computer plug and compare wi
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