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SECTION 3 - OPERATION 

II.  Programming the G-24

 

You should now be ready to begin operation. This G-24 conveyorized oven is equipped with a highly efficient heat 
transfer system consisting of two infrared emitters or heating elements. These elements are located one above 
and one below the conveyor belt. Each is controlled independently. This feature offers much more versatility than 
many other ovens. It enables the operator to raise only the bottom temperature to give the product a crisp hearth-
baked appearance or to cook a product evenly through a heavy metal pan. Or the operator may choose to raise 
only the top element temperature to give a crisp or broiled top to a product. 

Since the top and bottom elements are controlled independently, they can be set anywhere in their range. It is 
recommended, however, that the top and bottom temperatures be set within 75°F (24°C) of each other. The 
elements are very efficient, and a temperature differential greater than 75°F (24°C) will result in the lower 
temperature element being heated by the higher temperature one. This, in turn, causes an incorrect reading of 
temperatures and will result in an inconsistent product. 

A. Setting the Temperature

 

Control Panel A 

Control Panel B

 

1. Turn oven ON 

2. While pressing the upper element "SET" 
button turn the corresponding adjustment knob 
until the desired set temperature is shown on 
the display. The knob is a 3/4 turn knob. The 
numbers are an approximate temperature 
setting. 

3. Repeat Step  2 to set the lower element 
temperature using the lower element "SET" 
button and corresponding knob. 

1. Turn oven ON 

2. While pressing the upper element "SET" 
button turn the corresponding adjustment knob 
until the desired set temperature is shown on 
display. The knob is a multi-turn knob. 

3.  Repeat Step  2 to set the lower element 
temperature using the lower element "SET" 
button and corresponding knob. 

B. Setting the Cooktime (Conveyor Belt Speed) 

NOTE:

 For

 Both A & B

 Style Control Panel 

1. Turn Cooktime knob clockwise to increase conveyor belt speed or counterclockwise to decrease conveyor 
belt speed. Cooktime will be shown on LCD display in minutes and tenths of minutes. For example a display 
reading of 7.5 would be 7 minutes 30 seconds. Each 0.1 equals 6 seconds. 
The Cooktime knob is a multi-turn knob so very fine time adjustment is possible.  

C. Cooking in a CTX Oven

 

Before you begin to cook with your new oven you must understand the differences between cooking in it and 
cooking in more conventional ovens. You will produce better results  if you understand the technology and 
follow the "rules". 

1. Infrared Cooking Technology 

The technology of infrared cooking used in the CTX series ovens was first introduced by CTX in 1969. Each 
deck is fitted with patented infrared emitting heat panels (heating elements). These elements form the top 
and bottom surfaces of each oven chamber. The G-24 has two heating elements. One above and one below 
the conveyor belt. 

 

 

20

 

Summary of Contents for G-24

Page 1: ...OWNER S OPERATING INSTALLATION MANUAL G 24 CONVEYOR OVEN Toastmaster 1400 Toastmaster Drive Elgin IL 60120 708 741 3300 A Middleby Company Part No 310 2469 P 5 91 ...

Page 2: ...e intact and complete without evidence of misuse or abuse freight prepaid This warranty is made to the original purchaser user and is not transferable Seller shall not be liable for consequential damages of any kind which occur during the course of installation of equipment or which result from the use or misuse by Buyer its employees or others of the equipment supplied hereunder and Buyer s sole ...

Page 3: ... should be kept readily available DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS OR LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE Using any parts other than genuine Toastmaster factory manufactured parts relieves the manufacturer of all liability Toastmaster Manufacturer reserves the right to change specifications and product design without notice Such revisions do not entitle the...

Page 4: ...the Temperature 20 B Setting the Cooktime Conveyor Belt Speed 20 C Cooking in a CTX Oven 20 1 Infrared Cooking Technology 20 2 Heat Zoning 21 3 General Rules of Thumb 21 4 Cooking Trials 22 5 Time and Temperature Guide 23 26 6 Loading the Conveyor 27 Production Chart 28 SECTION 4 MAINTENANCE 29 A Cleaning the Cooling Fan Filter 29 B Cleaning the Oven Chamber 30 C Cleaning Loose Parts 30 D Cleaning...

Page 5: ...ller accurately maintains set cooking temperatures and conveyor speed cooktime for consistent and repeatable results Food is cooked by absorption of far infrared waves as it is conveyed through the oven chamber The oven features an all stainless steel exterior and an aluminized steel oven chamber The conveyor is a 15 wide stainless steel chain link belt Oven operating voltage is dual rated 208 240...

Page 6: ...SECTION 1 DESCRIPTION A Component Location Figure 1 2 2 ...

Page 7: ...lied with four 4 adjustable legs For all instal lations the legs must be used on a single oven or lower oven of stacked oven to validate the warranty The stacked oven is made up of two separate units one on top the other A mounting bracket P N ACSBG24 must be installed when stacking two ovens if bracket is not used warranty will be voided Single Oven Stacked Oven Figure 1 3 3 ...

Page 8: ...e belt which can travel in either direction around the frame The conveyor can travel at infinitely variable speeds and the speed is controlled by the Controller The speed of the conveyor determines how long the product will be in the cooking chamber which is the cooking time The oven chamber is 18 457 mm wide with a 15 381 mm wide conveyor belt 7 Accessories Kit For Stacking Two G 24 s An accessor...

Page 9: ...wo stacket units on legs with stacking bracket 45 5 1156mm lx 26 660 mm D x 34 864 mm H Net Weight of Single Unit Shipping Weight Single Unit 208 Ibs 94 kgm 231 Ibs 105 kgm Shipping Dimensions 50 1270 mm Lx 31 787 mm Dx 22 559 mm H Average Operating kw 2 8 kw Allowable Temperature Ranges 300 F 950 F 149 C 509 C Conveyor Drive System Solid state variable speed control reversible 208 240VAC supply v...

Page 10: ...ding Voltage Phase kw L1 L2 Wire Size Breaker Rating Amps 208 1 5 4 26 26 6 40 240 1 7 1 30 30 6 40 Provided for reference only Consult national or local electrical codes NOTE A separate ground wire must be supplied with each oven conduit may not be used as ground 6 ...

Page 11: ...D Oven Dimension Drawings STACKED OVEN DIMENSION DRAWING SECTION 1 DESCRIPTION 7 ...

Page 12: ...on of concealed damage must be made with carrier within 15 days The carrier will make an inspection and will supply necessary claim forms Be certain to retain all contents plus external and internal packaging crating materials for inspec tion B Placement of Oven Some very important considerations must be made when choosing the place where the oven is to oper ate 1 This oven is conveyorized and ope...

Page 13: ...ocation before being assembled stacked The oven setting on its bottom requires door openings wider than 26 660 mm Tied down to the conveyor belt is a box containing two 2 exit trays two 2 heat curtains and four 4 legs See Figure 2 1 Check to make sure you received the correct quantity of parts Figure 2 1 10 ...

Page 14: ...our 4 9 16 bolts attaching crate to bottom of oven E Installing Legs Install the four 4 4 ad justable legs as shown in Figure 2 3 then lift the oven onto it s legs On single oven installation place the oven in it s per manent position and then skip Step F and go directly to Step G Figure 2 3 11 ...

Page 15: ...ent position Remove the four screws one located in each corner of top of lower oven Place the brackets as shown in Figure 2 4 and use the screws that were re moved to secure brackets on to top of lower oven 2 Using four people lift the upper oven on top the lower oven Using the four bolts supplied with brackets secure bracket to top oven through the threaded holes normally used for legs Figure 2 5...

Page 16: ...er CO 19 convection oven or a Blodgett CTB 1 convection oven NOTE A stacking bracket kit P N ACSBG24C019 must be used for this installation or warranty is voided 1 Lay the G 24 on its front side Then using the four bolts supplied with the bracket secure bracket to bottom of oven through the threaded holes normally used for legs Opening in sidewall must be at right rear of oven Figure 2 7 13 ...

Page 17: ...n Also the temperature display may be set for either F or C Your Toastmaster Certified Installer will set both of these functions for you during the installation If you require a change in the future call your local Toastmaster Authorized Service Agency 2 Using four people lift the G 24 and place it on top of the convection oven 14 ...

Page 18: ...ed by a certified electrician Each oven must be wired according to the electrical specification for the oven rating See chart below and electrical schematic in Section 7 and schematics furnished with the oven The G 24 can be wired for 208 or 240VAC 60HZ 1 phase power supply 240V is recommended because of voltage fluctuations from the local power company A drop in voltage will also cause the oven s...

Page 19: ...ll one heat curtain at each end of the oven chamber by hanging it on the steel rod as shown in Figure 2 10 L Exit Tray Next install the desired exit tray at the exit end of the conveyor Two trays are supplied with each oven one short and one long Figure 2 11 Exit Tray 16 ...

Page 20: ...ion of Controls The following information provides a basic description of the oven s controls their location and the function they perform The operator must be familiar with the controls Figure 3 1 Control Panel Style A 17 ...

Page 21: ... and 3 2 coincide with the following list which explains the control pad and provides explanations of various terms and states of the oven Explanation of Controls keyed to Figure 3 1 and 3 2 A Display Liquid crystal display LCD provides readout of data being entered and data already entered LCD shows set temperature actual temperature and cooktime Cooktime is displayed at all times unless a R EAD ...

Page 22: ...that one or both elements are below set point temperature When the oven is first turned ON the light will remain on until both elements are up to set temperature Under heavy product load the light may cycle ON and OFF as the elements are energized to maintain set temperature F Alarm Light There are two alarm lights on the control panel These lights will illuminate when a problem exists in the temp...

Page 23: ...wn on the display The knob is a 3 4 turn knob The numbers are an approximate temperature setting 3 Repeat Step 2 to set the lower element temperature using the lower element SET button and corresponding knob 1 Turn oven ON 2 While pressing the upper element SET button turn the corresponding adjustment knob until the desired set temperature is shown on display The knob is a multi turn knob 3 Repeat...

Page 24: ... range This feature offers much more versatility than many other ovens It enables the operator to raise only the bottom temperature to give the product a crisp hearth baked appearance or to cook a product evenly through a heavy metal pan Or the operator may choose to raise only the top element temperature to give a crisp or broiled top to a product It is recommended however that the top and bottom...

Page 25: ...anels themselves For this reason temperature settings will be higher than those for a conventional oven Type of Product Conventional Oven CTX Oven Bakery Products 300 350 F 149 176 C 450 550 F 232 287 C Pizza Casseroles Flat Meats etc 350 450 F 176 260 C 600 750 F 315 398 C Broiled Fish Steaks etc 500 550 F 260 287 C 750 850 F 398 454 C 4 Cooking Trials The purpose of conducting cooking trials is ...

Page 26: ...t each test in the Product Test Record below so you can ultimately produce a cooking chart for your specific items 5 Time and Temperature Guide On the following pages are times and temperatures remember these times and temperatures only provide starting points You will have to determine the exact times and temperatures for your specific products by testing your products Here are some basic guideli...

Page 27: ...70 370 C Garlic Bread 900 900 F 2 0 Alum 1 2 size 1 Ib Fresh 482 482 C Muffins 600 600 F 15 0 Dark Alum 3 oz Fresh 315 315 C Popovers 550 550 F 30 0 Dark Alum 3 oz Fresh 287 287 C Soft Pretzels 800 800 F 8 0 Alum 1 2 size 2 oz Fresh 426 426 C Toast 900 900 F 2 0 None Slice Fresh 482 482 C Beef Beef Ribs Finish 950 850 F 8 0 Alum 1 2 size 8 ribs Precooked 509 454 C Hamburger 4 1 950 950 F 4 0 Alum ...

Page 28: ...5 Ib Refrig 370 370 C Pasta Sauce 850 850 F 8 0 Oven China 12oz Refrig 454 457 C Cookies Bar Cookies 650 650 F 10 0 Alum 1 2 size 1 Ib Fresh 343 343 C Brownies 700 700 F 15 0 Alum 1 2 size 3 1 2 Ib Fresh 370 370 C Chocolate Chip 650 650 F 7 0 Alum 1 2 size 3 4 oz Fresh 343 343 C Chocolate Chip 650 650 F 8 0 Alum 1 2 size 1 2 oz Fresh 343 343 C Macaroons 650 650 F 15 0 Alum 1 2 size 1 oz Fresh 343 ...

Page 29: ... 0 Black Deep Pan Fresh 398 398 C Calzone 675 675 F 8 0 Pizza Screen or Fresh 357 357 C Black Sheet Pan Stuffed 650 650 F 20 0 Black Deep Pan Fresh 343 343 C Thick Crust 775 775 F 6 5 Black Pizza Pan Fresh 412 412 C Thin Crust 800 800 F 5 5 Pizza Screen Fresh 426 426 C Thin Crust 650 650 F 9 0 Pizza Screen Frozen 343 343 C Thin Crust 800 800 F 5 0 Pizza Screen Pre bake 426 426 C Pork Breaded Chop ...

Page 30: ...s will require different placement You will have to determine the best placement configuration for your pans DO NOT place pans off the edge of the belt or allow them to overhang Production output for any pan size can be easily calculated using the following formula This formula is based on a succession of single pans being placed on the belt No consideration is given to multiple pans across the 18...

Page 31: ... 11 10 13 min 22 18 16 14 12 22 10 9 14 min 20 17 15 13 11 5 10 9 8 5 15 min 19 16 14 12 10 5 9 5 8 5 8 16 min 18 15 13 11 10 9 8 7 5 17 min 17 14 12 10 5 9 5 8 5 7 5 7 18 min 16 13 11 10 9 8 7 6 5 19 min 15 12 5 10 8 9 5 8 5 7 5 6 5 6 3 20 min 14 12 10 9 8 7 6 6 These pans may be placed side by side on the belt doubling the capacity All product to be prepared on the G 24 requires that some produc...

Page 32: ...kly Daily cleaning may be required if flour has built up on filter Snap the protective grill off and wipe clean with a cloth Remove the foam filter and inspect it If dusty shake briskly If greasy dirt wash in warm soapy water rinse squeeze and set aside to dry completely Reinstall filter and grill Figure 4 1 CAUTION Electrical Components are directly below the cooling fan BE SURE filter is dry bef...

Page 33: ...r can be removed by reaching in and wiping out the chamber Do not reach into a hot oven Severe burns could result CAUTION Be sure oven is off and cool to the touch and the conveyor is stopped before attempting to wipe out the oven chambers C Cleaning Loose Parts NOTE Commercial oven cleaners can be used to clean stainless steel loose parts The following items must be removed from the oven to be cl...

Page 34: ... tray empty residue wash rinse and dry thoroughly Re install Figure 4 3 Exit Trays Heat Curtains Clean as needed Unhook the heat curtains from the rods above the entrance and exit end of each conveyor Wash rinse and dry thoroughly Re install Figure 4 4 Heat Curtains 31 ...

Page 35: ...trical shorts in the unit which could shock someone As a reminder the openings in the control box area are the opening under the fan filter the louvers on the side of the control panel area and the small crack between the control panel and the control panel box E Spare Parts Kit Kit P N 790 1262 Spare Parts Kit Kit P N 790 1262 Parts List Item Part Description 1 3002751 Conveyor Motor 2 3002755 Br...

Page 36: ...33 ...

Page 37: ...SECTION 5 TROUBLESHOOTING 34 ...

Page 38: ...LEMENT HEARTH PLATE 1 7608540 2 HEATING ELEMENT For early model G 24 w 13 2 33055 4 PORCELAIN TUBE 3 7609640 2 RACEWAY COVER 4 3004265 4 THERMOCOUPLE NOTE Always replace bayonet fitting P N97393 when replacing thermocouple 5 97393 4 BAYONET FITTING w COMPRESSION FERRULE 6 97394 4 BAYONET ADAPTOR 35 ...

Page 39: ...Section 6 Parts List 36 ...

Page 40: ... FLAT WASHER 9 7005445 2 CRUMB TRAY 10 3101173 3 MASTER LINKS 11 3101172 1 CONVEYOR BELT 1 FOOT 12 3006077 1 CONTROLLER SOLID STATE 13 B301A8827 8 6 32 x 1 4 RH SCREW 14 7610025 1 OPTIONAL CONTROL BOX 15 7007106 1 OPTIONAL CONTROL COVER 16 3000330 1 FILTER ASSEMBLY FAN 17 7006911 2 HEAT CURTAIN 18 7608578 1 IDLER SHAFT 19 7005443 1 OVEN COVER 20 3101908 4 LEG 4 ADJUSTABLE Stacking Bracket Kit ACSB...

Page 41: ...SECTION 6 PARTS LIST 38 ...

Page 42: ...BRACKET 10 7609638 1 SENSOR BRACKET 11 2000292 2 SCREW 10 32 x 2 1 2 FLAT HEAD SCREW 12 3002683 1 HEAT SINK 13 220009 2 TEFLON PAD 14 82910 2 SOLID STATE RELAY 45A 15 3430108A 2 VARISTOR 16 1429A8823 4 SCREW 8 32 x 3 8 8CH SCREW 17 3002686 1 FAN 18 4111A8807 4 LOCK WASHER 8 19 1429A8827 4 HEX NUT 8 20 7608516 1 TRANSFORMER32V 21 3002918 1 RELAY 22 7608591 1 CORD AND PLUG ASSEMBLY 23 3000419 1 STRA...

Page 43: ...MODEL G 24 ELECTRICAL SCHEMATIC 41 ...

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