HOT ROCKS HR7022 Parts And Service Manual
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HOT ROCKS HR7022 Parts And Service Manual

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ALL GEN 3 MODELS
PARTS AND SERVICE MANUAL
FOR SUPPORT
service@hotrocksoven.com
855 395-5252

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Summary of Contents for HOT ROCKS HR7022

  • Page 1 ALL GEN 3 MODELS PARTS AND SERVICE MANUAL FOR SUPPORT service@hotrocksoven.com 855 395-5252...

  • Page 4: Table Of Contents

    3.2.2 Installation check list .......................... 21 4. MAINTENANCE – 6 MONTH ......................... 22 4.1 Main Bearings Lubrication ........................... 22 4.1.1 Back Side Bearings Lubrication ......................22 4.1.2 Front Side Bearings Lubrication ......................23 4.2 Chain lubrication............................24 Parts and service manual / Hot Rocks...
  • Page 5 5.8 Adjust the entry and exit conveyor ......................37 5.9 General inspection ............................38 APPENDIX I – INSTALLATION CHECKLIST .................... 39 APPENDIX II – ELECTRICAL DRAWINGS ....................41 APPENDIX III – MECHANICAL DRAWINGS ..................... 52 Parts and service manual / Hot Rocks...

  • Page 6: Generalities

    • Always disconnect the electric plug and wait until the oven has cooled before attempting any maintenance. • Do not wear loose-fitting clothes or jewellery as they may get caught in the moving parts of the oven. • Always wear appropriate shoes to prevent, to prevent injury caused by moving the oven or hot objects falling from the oven. • Work only in full daylight or with sufficient artificial light. • Do not operate the oven while under the influence of alcohol, drugs or any illegal substance Parts and service manual / Hot Rocks...

  • Page 7: Service

    DO NOT USE THIS APPLIANCE IF ANY OF ITS PARTS HAVE BEEN UNDER WATER. IMMEDIATELY CONTACT A QUALIFIED SERVICE TECHNICIAN TO INSPECT THE APPLIANCE AND TO REPLACE ANY PARTS WHICH WERE SPRAYED OR SUBMERGED UNDER WATER. Parts and service manual / Hot Rocks...

  • Page 8: Authorized Technician

    It is possible to obtain these services by contacting Hot Rocks customer service or a local service company. Refer to the Hot Rocks website for a list.

  • Page 9: Operation

    Icon shown when the lubrication of the main conveyor chains is due. Once the lubrication is done, the icon will disappear. Icon shown when the lubrication of the main conveyor chains is due. Once the lubrication is done, the icon will disappear. Parts and service manual / Hot Rocks User Manual...

  • Page 10: Technician Login

    Access Monitoring page Access Lubrication page Access Setting page Access Date & Clock page Access Maintenance page Access Configuration page Access Input/Output page 1 Authorizations can be granted by the Advanced User. See User Manual. Parts and service manual / Hot Rocks...
  • Page 11 After 15 minutes without touching the screen, the technician user will be automatically logged out resetting rights to those of the basic user. Parts and service manual / Hot Rocks...

  • Page 12: Configuration

    Allows to select between three Allows to select the type of gas: Opens the monitor settings. models of Hot Rocks Oven: Propane HR7022 Natural Gas HR7033 HR9333 Manuel de l’utilisateur / Hot Rocks Parts and service manual / Hot Rocks...
  • Page 13 Maximum torque percentage allowed before sending a warning on the user interface. Torque Alarm Maximum torque percentage allowed before sending an alarm on the user interface. Nb of sample The number of cycles the oven will try before sending a warning or alarm. Parts and service manual / Hot Rocks...
  • Page 14 The fan speed during these modes 3 minutes for the preheat mode 100% for the preheat mode 3 minutes for the cooldown mode 70% for the cooldown mode Manuel de l’utilisateur / Hot Rocks Parts and service manual / Hot Rocks...
  • Page 15 The third page show the burner parameters. Delta Top/Bottom The max temperature allowed between the top temperature and the bottom temperature. Max Fire, Reduce Fire, Low Fire These settings are completed at the factory and will differ between models. Parts and service manual / Hot Rocks...

  • Page 16: Input/Output

    I00.3 - TEMP. HIGH LIMIT: This value comes from the high limit display on the rear of the oven located next to the gas entry. I00.4 - IGNITION FEEDBACK: This value comes from the ignition box located in the electrical panel; used to confirm flame detection. I00.5 - REVERSE PUSH BUTTON: Test by engaging any of the reverse buttons on the oven. Manuel de l’utilisateur / Hot Rocks Parts and service manual / Hot Rocks...
  • Page 17 The Bottom Heat Test section test the burner’s fan speed. Insert a percentage value in the COMMAND section, and verify that the speed changes by listening to the blower’s noise increasing or decreasing. There is no FEEDBACK on this value. Manuel de l’utilisateur / Hot Rocks Parts and service manual / Hot Rocks...
  • Page 18 ACTUAL box. DIRECTION changes the direction of the conveyor. * Note: The change of direction is only for the test, and does not permanently change the direction setting. Manuel de l’utilisateur / Hot Rocks Parts and service manual / Hot Rocks...

  • Page 19: Installation

    3.1 Moving the ovens 3.1.1 Shipping The Hot Rocks oven can be shipped in two different configurations depending on the entryway available to bring the oven in the location. Refer to the specification sheet available on the Hot Rocks website for more information. 3.1.2 Oven dimensions Parts and service manual / Hot Rocks...

  • Page 20: Oven Assembly

    3.2.1 Complete the assembly 1. Silicone seal WARNING Make sure that the silicone seal is smooth with no bubbles; it must not allow food particles in between units. Parts and service manual / Hot Rocks...

  • Page 21: Installation Check List

    Power on the oven and access to the JOG menu as shown in section 2.1.4. Install all stones using a torque of 105 lbs-in. 3. Install entry and exit conveyors 4. Physically inspect the oven Take notes and photos of any scratches on the oven. Report these to the Hot Rocks service department. 3.2.2 Installation check list The installation check list (See appendix) is the key to perform the final validation of the install.

  • Page 22: Maintenance - 6 Month

    Grade high temperature lubricant (FO75-0015) grease the two points. To verify if done properly, check if grease is coming out of the bearings. 4. Reassemble the back panels. Parts and service manual / Hot Rocks Manuel de l’utilisateur / Hot Rocks Manuel de l’utilisateur /...

  • Page 23: Front Side Bearings Lubrication

    2. Locate the two grease points highlighted in the above illustration. Using a grease gun and food grade high temperature lubricant (FO75-0015) grease the two points. To verify if done properly, check if grease is coming out of the bearings. 3. Reassemble the front panel. Parts and service manual / Hot Rocks...

  • Page 24: Chain Lubrication

    3. Verify that chains have proper adjustments. The bending of the chains (shown by the red arrows below) should not exceed a bend of more than 6 mm (0,25 inch). If required, adjust chains by using the tensioner shown in blue on the illustrations.. Manuel de l’utilisateur / Hot Rocks Parts and service manual / Hot Rocks...

  • Page 25: Lubrication And Adjustment Of Entry And Exit Conveyor

    3. Verify that chains have proper adjustments. The bending of the chains (shown by the red arrows below) should not exceed a bend of more than 6 mm (0,25 inch). If required, adjust chains by using the tensioner shown in blue on the illustrations. Parts and service manual / Hot Rocks...

  • Page 26: Main Conveyor Lubrication

    5. Locate the lubricant (FO75-0050) and shake well for 2 minutes. This lubricant is food grade quality and has been designed specifically for application on these ovens. No other lubricant will provide the correct coverage. Note: using a different lubricant type will void the warranty on these parts. Parts and service manual / Hot Rocks...
  • Page 27 8. Reassemble the removed parts, and put the oven back into normal usage. Depending on the amount of lubricant applied, the excess will still continue to evaporate. The evaporation will produce an odourful non-toxic fume. Parts and service manual / Hot Rocks...

  • Page 28: Cleaning Of The Electrical Cabinet

    1. Remove both the stone conveyor crumbs trays and inspect if they are clean or if there is a major accumulation of particles. 2. If a major accumulation is found, make sure to let the manager know and explain problems that can arise when proper maintenance is not preformed Parts and service manual / Hot Rocks...

  • Page 29: General Inspection (Skip To Maintenance - 12 Month If Needed)

    2. Debrief the manager on what was done and make recommendations including comments on the daily maintenance of the oven. 3. Report anything that should be followed-up in the next preventive maintenance visit to the Hot Rocks service team. 4. Verify that there is enough lubricant left in the bottle. One bottle should last 6 months.

  • Page 30: Maintenance - 12 Month

    5.1 Replace spark and flame rod 1. Access the back of the oven. 2. Remove the back panels. 3. Disconnect the gas hose circled in red as well as the electrical wires. Parts and service manual / Hot Rocks Manuel de l’utilisateur / Hot Rocks...
  • Page 31 7. Replace the ignition cables and connect it to the electrode rod and ground terminals. 8. Adjust the flame sensing electrode (the straight rod, with the smallest ceramic insulator) to achieve a gap of exactly 6 mm (1/4 inch) between the end of the electrode and the mesh membrane of the burner terminals. Parts and service manual / Hot Rocks...

  • Page 32: Replace Ingnition Cables

    1. Using a multimeter, measure the resistance between the tip of the ground rod (shown in green) and the flat connector that attaches to the ignition box of the green ground wire. 2. The resistance must be less than 0.1 Ohms. If not, reapply electrical compounds (product code FO75-0044). Manuel de l’utilisateur / Parts and service manual / Hot Rocks Hot Rocks...

  • Page 33: Inspect And Clean The Burner

    3. Reinstall the burner and reconnect the gas and the cables. Vacuum the electrical compartment while the back panel is removed. WARNING Always use a vacuum for cleaning. It is prohibited to use pressurized air inside the electrical cabinet. Parts and service manual / Hot Rocks Manuel de l’utilisateur / Hot Rocks...

  • Page 34: Inspect And Clean Fans

    3. Check for fan blades for damage or for anything that will obstruct the rotation of the fans. For the inspection the use of a small mirror is recommended. WARNING Always use a vacuum for cleaning. It is prohibited to use pressurized air inside the electrical cabinet. Parts and service manual / Hot Rocks...

  • Page 35: Verify The Gas Pressure

    0.00 inches of H2O (small vacuum). 3. If the measurement is outside of the scope, adjust the low fire level using a hex key on the nut highlighted by a red circle). 4. Once the adjustment is confirmed correct, screw the plug back into the port 5. Using a multimeter, measure the current between terminal FC- and FC+ on the ignition control box. Readings should be at least 3 µA at “low fire.” Typical is around 5.5 µA. Parts and service manual / Hot Rocks...

  • Page 36: Verify Stone Conveyor Torque

    1. Set the conveyor to the correct speed for the gearbox ratio: a. 15 minutes for 1000:1 b. 7.5 minutes for 490:1 2. Enter the monitoring screen 3. Make sure the value of the current torque is between 36% and 45%. Manuel de l’utilisateur / Hot Rocks Parts and service manual / Hot Rocks...

  • Page 37: Adjust The Entry And Exit Conveyor

    1. The adjustment of the entry and exit conveyors is done by adjusting the set screw circled in red. The minimum distance between underneath of the mesh belt and the top of the stone conveyor must be approximately 3 mm (1/8 inch). Parts and service manual / Hot Rocks...

  • Page 38: General Inspection

    Hot Rocks service team. 4. Verify that there is enough lubricant left in the bottle. One bottle should last 6 months. 5. Confirm the maintenance in the “MAINTENANCE” page Manuel de l’utilisateur / Hot Rocks Parts and service manual / Hot Rocks...

  • Page 39: Appendix I - Installation Checklist

    Gas connection already installed on site Electrical connection already installed on site Make sure hood size is respecting the minimum requirements *6 inch overhang all around the Hot Rocks The ventilation interlocks have been installed by the customer? Test the ventilation interlocks of each oven deck. Unplug the cable and confirm a pressure switch. failure appear on the main screen.
  • Page 40 Show the customer the daily maintenance requirements of the oven. Use the wall chart in the welcome kit. Show the customer how to lube the main conveyor chain monthly . Explain to the customer that if there is an issue with the oven, he needs to contact the service department at 877-395-5252 or support@hotrocksoven.com. Technician’s name Technician’s signature Customer’s name Customer’s signature Parts and service manual / Hot Rocks...

  • Page 41: Appendix Ii - Electrical Drawings

    7 APPENDIX II – ELECTRICAL DRAWINGS I00.4A RI00.4 3L222 I00.4 Parts and service manual / Hot Rocks...
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  • Page 44 I00.4A RI00.4 3L222 I00.4 Parts and service manual / Hot Rocks...
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  • Page 52: Appendix Iii - Mechanical Drawings

    8 APPENDIX III – MECHANICAL DRAWINGS Parts and service manual / Hot Rocks...
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  • Page 63 BLACK MONOLITIC PUSH BUTTON, 1 X N.O., IDENTIFICATION (R) PBI00.5L, PBI00.5R EL02-0216 BUZZER AL- 6-28VAC/DC FAST PULSE BQ00.4 EL32-0087 MOTOR 1/4 HP 1800 RPM 230/460V 60HZ 3 PHASES FRAME 56 ACCU-TORQ (C-FLANGE) EL01-0114 ROCKER SWITCH ON-OFF DPST 16A 250VAC EL32-0095 MOTOR 560W /3400RPM/ 208V/60HZ 3PHASE EL64-0105 TYPE J THERMOCOUPLE, NON GROUNDED 60'' WIRE, 12'' PROBE, 1/4 "DIA EXT EL64-0111 TYPE J THERMOCOUPLE, NON GROUNDED 12'' WIRE, 12'' PROBE, 1/4 "DIA EXT EL02-0165 EL02-0165 (CONTROLE D'ALLUMAGE POUR VENTILATEUR DE COMBUSTION) 040-0096 ETHERNET CABLE SHIELDED CAT6 6' VERT, CSA. UL ETH_4 ,ETH_5 040-0093 ETHERNET CABLE SHIELDED CAT6 10' VERT, CSA. UL ETH_3 040-0097 ETHERNET CABLE SHIELDED CAT6 1' VERT, CSA. UL ETH_1 EL02-0165 IGNITION CONTROL (FENWAL) Parts and service manual / Hot Rocks...
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  • Page 68 2555 Alfred Nobel, Drummondville (Quebec) Canada J2A 0L5 819 395-5151 / 855 395-5252 819 395-5343 hotrocksoven.com Follow-us...

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