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SECTION 3 - OPERATION III. QUICK REFERENCE: DIGITAL TEMPERATURE CONTROLLER Display "HEAT ON" Shows the Set Point Light or the Actual Tem- Lights when the perature in degrees burner is in ENGLISH "SP LOCK" Light Lights when the set point is locked out from changes. This setting can only be changed by service personnel. OVERTEMP Light Lights when the oven temperature is greater than 650°F (343°C). Refer to Quick Reference: Troubleshooting in this section. Temperature Key Press this key once to view the Actual Temperature in the Display. Unlock Key Press this key together with the Set Point Key to allow the Set Point to be changed. Changes can only be made for 60 seconds. Fahrenheit (F) or operation. Celsius (C). Up Arrow and Down Arrow Keys Press these keys to adjust the Set Point up or down. If the Set Point will not change, refer to Set Point Key and Unlock Key in this section. "SET PT" (setpoint) Light Lights when the set point is shown in the display. "ACTUAL TEMP" Light Lights when the Actual Temperature is shown in the display. Service Key Service use only. Set Point Key Press this key together with the Unlock Key to allow the Set Point to be changed. Changes can only be made for 60 seconds. 17 SECTION 3 - OPERATION NOTES ENGLISH 18 19 ENGLISH I. MAINTENANCE - DAILY A. Check that the oven is cool and the power is disconnected, as described in the warning at the beginning of this Section. B. Clean ALL of the cooling fan grills and vent openings with a stiff nylon brush. Refer to Figure 4-1 for the locations of the grills and vents. C. Clean the outside of the oven with a soft cloth and mild detergent. D. Check that ALL cooling fans are operating properly. CAUTION If a cooling fan is not operating correctly, it must be replaced IMMEDIATELY. Operating the oven without adequate cooling can seriously damage the oven's internal components. E. Clean the conveyor belts with a stiff nylon brush. This is more easily accomplished by allowing the conveyor to run while you stand at the exit end of the conveyor. Then, brush the crumbs off the conveyor as it moves. F. Remove and clean the crumb trays. If necessary, refer to Figure 2-13 (in Section 2, Installation) when replacing the crumb trays into the oven. G. Clean the window in place. SECTION 4 - MAINTENANCE WARNING Possibility of injury from moving parts and electrical shock exists in this oven. Switch off and lockout/tagout the electric supply BEFORE beginning to disassemble, clean, or service any oven. Never disassemble or clean an oven with the BLOWER/HEAT ( )( ) switch or any other circuit of the oven switched on. CAUTION NEVER use a water hose or pressurized steam-cleaning equipment when cleaning this oven. To avoid saturating the oven insulation, DO NOT use excessive amounts of water. DO NOT use a caustic oven cleaner, which can damage the bake chamber surfaces. NOTE ANY replacement parts that require access to the interior of the oven may ONLY be replaced by a Blodgett Authorized Service Agent. It is also strongly recommended that the 3-Month Maintenance and 6-Month Maintenance procedures in this section be performed ONLY by a Blodgett Authorized Service Agent. Figure 4-1 -Cooling Vents and Grills WARNING Before ANY cleaning or servicing of the oven, perform the following procedure: 1. Switch off the oven and allow it to cool. Do NOT service the oven while it is warm. 2. Turn the full-flow gas safety valve to the off position. 3. Turn off the electric supply circuit breaker(s) and disconnect the electric supply to the oven. 4. If it is necessary to move a gas oven for cleaning or servicing, disconnect the gas supply before moving the oven. When all cleaning and servicing is complete: 1. If the oven was moved for servicing, return the oven to its original location. 2. Reconnect the gas supply. 3. Reconnect the electrical supply. 4. Turn on the full-flow gas safety valve. Test the gas line connections for leaks using approved leak test substances or thick soap suds. 5. Turn on the electric supply circuit breaker(s). 6. Perform the normal startup procedure. SECTION 4 - MAINTENANCE ENGLISH II. MAINTENANCE - MONTHLY A. Check that the oven is cool and the power is disconnected, as described in the warning at the beginning of this Section. B. Refer to Part D, Conveyor Installation, in the Installation section of this Manual. Then, remove the following components from the oven: • Conveyor end stop • Crumb trays • Chain cover • Drive chain • End plugs • Conveyor assembly C. Slide the air fingers and blank plates out of the oven, as shown in Figure 4-2. AS EACH FINGER OR PLATE IS REMOVED, WRITE A "LOCATION CODE" ON IT WITH A MARKER to make sure that it can be reinstalled correctly. Example of markings: (Top Row) T1 T2 T3 T4 (Bottom Row) B1 B2 B3 B4 D. Disassemble the air fingers. See Figure 4-3. AS EACH FINGER IS DISASSEMBLED, WRITE THE "LOCATION CODE" FOR THE FINGER ON ALL THREE OF ITS PIECES. This will help you in correctly reassembling the air fingers. CAUTION In...