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User manual Frymaster, model Heated Landing Zone HLZ 18

Manafacture: Frymaster
File size: 575.24 kb
File name: 512b481e-f534-46dd-90ac-70dae9ec71fa.pdf

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Hi-limit (left above) and air thermocouple (bottom right above) and air RTD. Transformer and fuses. Solid state relays Frymaster L.L.C., 8700 Line Avenue 71106, P.O. Box 51000, Shreveport, Louisiana 71135-1000 318-865-1711 FAX 318-862-2394 Printed in the United States Service Hotline Page 9 1-800-24-FRYER 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 towels on the heater plate to protect it from scratching. Remove the cowl assembly and lay the cowl on the heater plate while troubleshooting. Air heater Heater plate relay relay The cowl assembly is held on by five screws, which are removed from the bottom of the unit. The relays are best replaced by removing the plate that holds them in place. Two 5/16 nuts hold the plate in place. 12 240VAC 12A 34 12 240VAC 12A 34 Heater Plate Front of HLZ 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. c. Remove the two nuts holding relays to plate. d. Apply heat sink compound and install new relay. e. Reverse this procedure to reinstall. Frymaster L.L.C., 8700 Line Avenue 71106, P.O. Box 51000, Shreveport, Louisiana 71135-1000 318-865-1711 FAX 318-862-2394 Printed in the United States Service Hotline Page 10 1-800-24-FRYER 9.5 Opening the Air Delivery Tower: a. The air thermocouple and air RTD are located in the air delivery tower. To access them, the front air delivery assembly must be removed. b. Insert a 5/16” nut driver Components in the rear tower are through the front air accessed by loosening two nuts, one under each end of the overhang. 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. 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 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 been pulled through, disconnect the old lead wires, and attach the new leads to the test plug. Frymaster L.L.C., 8700 Line Avenue 71106, P.O. Box 51000, Shreveport, Louisiana 71135-1000 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. Use the following method to remove the plate heater assembly or access the compartment underneath the plate heater. b. Remove the cowl assembly per steps After cutting the acrylic adhesive between the 9.3. heater plate and the HLZ chassis, use a screwdriver to gently lift the heater plate. c. Then remove the air delivery assembly following steps in 9.5. d. 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. Gently lift the heater plate, which may still be stuck to the adhesive. Apply new acrylic tape to the chassis e. Lift the heater plate by prying up before reinstalling the heater plate. one end of the heater plate away from the HLZ chassis. The plate is held in place by an acrylic tape. It will be difficult to NOTE: A hot platen isbreak the bond between the heater plate and easier to remove. The chassis. heat makes the f. Remove acrylic tape from the heater plate and frame to prevent rebounding while servicing. adhesive holding the platen in place more pliable. g. 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. h. 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. i. Finish lowering the heater plate into place and connect t...