Middleby Marshall PS200 - Manual

Page 2 - technical service; Middleby is proud to support the

1 © 2002 Middleby Marshall, Inc. is a registered trademark of Middleby Marshall, Inc. All rights reserved. Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin, IL 60120 (847) 741-3300 FAX (847) 741-4406 24-Hour Service Hotline (800) 238-8444 This Technical Service Manual includes i...

Page 3 - TABLE OF CONTENTS; WARNING; DISCONNECT THE OVEN FROM ITS ELECTRICAL; manufacturer of all warranty and liability.; NOTICE

2 Section 1 - Sequence of Operation .................................................... 4I. Gas Oven Sequence of Operation ............................................. 4 II. Electric Oven Sequence of Operation ....................................... 6 Section 2 - Air Flow and Heat Transfer ..........

Page 5 - SECTION 1

4 I. GAS OVEN SEQUENCE OF OPERATION A. Electrical Supply Gas heated ovens operate on 208/240V, single phase. Standard incoming power configurations are:1. 4-wire system (PS200 series, PS310/360 series, PS570, PS570S) - 2 single phase 208/240V sup- ply (hot) lines, 1 neutral and 1 ground. 2. 3-wire s...

Page 7 - Electric oven models use a separate High Limit

6 ll. ELECTRIC OVEN SEQUENCE OF OPERATIONA. Electrical Supply Most electrically heated ovens operate on a 208/230/ 380/440V, 3 phase, 4 wire system. The fourth wire is for a 120 V neutral ground. This 120 V neutral ground eliminates the need for a control transformer. Where a neutral is not availabl...

Page 8 - I. TYPES OF HEAT TRANSFER; Conduction; II. BLOWERS AND BLOWER SPEED; Figure 1

7 SECTION 2 AIR FLOW AND HEAT TRANSFER I. TYPES OF HEAT TRANSFER Heat constantly moves from a warm object to a cold ob- ject. Heat moves in three different ways: thorough con- duction, through radiation, and through convection. Middleby Marshall conveyor ovens use all three of these paths to cook th...

Page 10 - B. Configuration and Alignment; D air finger label or card.; C. Performing a Test Bake; Figure 5

9 SECTION 2 - AIR FLOW AND HEAT TRANSFER B. Configuration and Alignment To ensure proper baking of the product, the air flow MUST be properly aligned as it exits the air fingers.Because air finger configurations are tested at the fac- tory for a specific customers product, severe bake prob- lems re...

Page 11 - D. PS300/350 Air Finger Shutter Adjustment; Figure 7

10 To perform the test bake:1. Select identical pans for the test. Choose the pans based on the width of the conveyor; you should space the pans in line completely across the conveyor with- out having them touch each other. For instance, for a 32 /813mm-wide conveyor, you could use three 10/ 254mm...

Page 13 - A. Conveyor Speed and Bake Time; leading edge to lead-; Figure 10 - Belt Time; trailing edge to trailing edge; Figure 11 - Time of Delivery

12 IV. OVEN CAPACITY Oven capacity is generally not a service issue. However, when reporting a service problem, customers may use terms relating to capacity, such as bake time, belt time, time of delivery, etc. This information is provided as a reference for understanding these terms. A. Conveyor Sp...

Page 14 - Original-style speed controller; Produced with thumbwheel only.; Current-style speed controller; Produced with Thumbwheel or digital display.; I. CONVEYOR SPEED CONTROLLER AND DRIVE; Original-style speed controller with interchangeable mi-; Current-style speed controller with either 4 or 8 DIP switch; Current-style speed controller with 8 DIP switch set-

13 SECTION 3 - SERVICING COMPONENTS SECTION 3 SERVICING COMPONENTS Figure 12 Original-style speed controller Produced with thumbwheel only. Interchangeable microcomputer selects oven model. THIS CONTROLLER IS OBSOLETE AND NO LONGER AVAILABLE. Figure 13 Current-style speed controller Produced with Th...

Page 15 - C. Preparing to Service the Speed Controller

14 SECTION 3 - SERVICING COMPONENTS Figure 15 Old-style pickup assembly Figure 14 PS350-style pickup assembly (used on early PS360) C. Preparing to Service the Speed Controller NOTE: To properly service this equipment, you must use a digital meter. An analog meter will not work.1. Before troubleshoo...

Page 16 - Components needed for the field tester:; DO NOT turn the conveyor switch ON while; Field Tester for Conveyor Drive Motor

15 SECTION 3 - SERVICING COMPONENTS Figure 16 Current pickup assembly - side view Figure 17 Current pickup assembly - end view D. Controller/Motor Failure When the conveyor speed controller fails, it is very pos- sible that a shorted conveyor motor caused the problem. Unless the motor is changed, th...

Page 17 - E. Basic Troubleshooting Flowcharts

16 E. Basic Troubleshooting Flowcharts 1. IF THE GEAR MOTOR RUNS AT FULL SPEED: SECTION 3 - SERVICING COMPONENTS NOTE: Middleby no longer stocks parts for the original speed controller with interchangeable microcom- puter. If it is necessary to replace this version of the controller or the microcomp...

Page 18 - IF THE GEAR MOTOR WILL NOT RUN AT ALL:

17 2. IF THE GEAR MOTOR WILL NOT RUN AT ALL: SECTION 3 - SERVICING COMPONENTS NOTE: Middleby no longer stocks parts for the original speed controller with inter- changeable microcomputer. If it is necessary to replace this version of the controller or the microcomputer, and the service agent does no...

Page 20 - G. Conveyor Control Pickup Test; Connections for pickup test; H. Conveyor Motor Test

19 SECTION 3 - SERVICING COMPONENTS G. Conveyor Control Pickup Test 1. Visually check the pickup for the following: The magnet is clean and the bearing is in good condition. There are no chips or cracks on the magnet. If using a PS350-style pickup (see Figure 14), there is a 1/64 to 1/32 (0-...

Page 21 - SECTION 3 - SERVICING COMPONENTS

20 SECTION 3 - SERVICING COMPONENTS Figure 20 Wiring for PS360 Shielded Pickup Cable - early terminal block design Figure 21 Wiring for PS360 Shielded Pickup Cable - late terminal block design K. Appendices Appendix - Conveyor sensor wiring changes for PS360-series and PS570S, 10/95

Page 24 - Conveyor Speed Controller Kit with Thumbwheel, 4/95

23 SECTION 3 - SERVICING COMPONENTS Appendix - Instructions for Service Kit 42810-0133- Conveyor Speed Controller Kit with Thumbwheel, 4/95

Page 28 - Service Bulletin; SUBJECT; GENERAL; APPLICATION; COMPATIBILITY; Middleby Cooking Systems Group

27 Service Bulletin SUBJECT Availability of Conveyor Speed Controller Kits GENERAL Middleby Marshall is changing is standard Conveyor Speed Controller from the familiar thumbwheel control to a unit that features a digital display with pushbutton speed selectors. The part numbers of these components ...

Page 29 - Instructions for Service Kit 44756; Conveyor Speed Controller Kit for PS200R68-series ovens; Middleby Corporation Service

28 P/N 44757 Rev. C V1 2/02 Instructions for Service Kit 44756 Conveyor Speed Controller Kit for PS200R68-series ovens KIT COMPONENTS: Qty. P/N Description 1 37337 Conveyor speed controller with digital display 1 44749 Cable assembly, PS200R68-series ovens 1 44757 Instructions, PS200R68-series...

Page 31 - II. TEMPERATURE CONTROLLER; On gas ovens with On-Off gas valve operation; Note that temperature controller P/N 46837; Appendix - DIP switch settings for Conveyor Speed Controller

30 II. TEMPERATURE CONTROLLER The Temperature Controller is used to set and control the oven temperature. Depending on the oven, model, the con- troller has several functions: On gas ovens with On-Off gas valve operation , the tem- perature controller opens and closes the high flame solenoid. This ...

Page 32 - Figure 22 - Temperature controllers; Used on; A. Part Number Reference - Temperature Controllers; Used on early PS360WB70 and some CE oven

31 Figure 22 - Temperature controllers P/N 28071-0012 (A) Analog Temperature Controller without high-limit and cooldown functions, 120V, on-off mode only. P/N 28071-0018 (A) Analog Temperature Controller with high-limit and cooldown functions, 120V, on-off mode only. P/N 34983 (B) Analog Tempe...

Page 34 - Instructions for Service Kit 47321; KIT COMPONENTS; Variable Pulse Electric operating modes), with mounting brackets; Digital Temperature Controller; Installation, Programming and Troubleshooting Instructions

33 Page 1 of 10 Instructions for Service Kit 47321 Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin, IL 60120 USA (847) 741-3300 FAX (847) 741-4406 KIT COMPONENTS Qty. P/N Description 1 46837 Digital Temperature Controller (On/Off Gas & Electric, PID Gas, and Variable Pulse ...

Page 35 - Controller Types; Marshall oven equipped with the following Controllers.

34 Page 2 of 10 Controller Types This Kit includes one Digital Temperature Controller (P/N 46837) that can operate at 120-240V, and can be programmed to operate in on-off, PID, or variable pulse modes. The Controller is shown in Figure 1G, below. By following these instructions, the Controller can b...

Page 36 - Before you Begin; Figure 2; Installation; Jumper Setting

35 Page 3 of 10 WARNING BEFORE PERFORMING ANY SERVICE WORK, THE ELECTRICAL POWER SUPPLY AND THE GAS SUPPLY MUST BE TURNED OFF. Before you Begin 1. This Temperature Controller requires a current-version thermocouple for proper operation. Check that the thermocouple(s) installed in the oven match the ...

Page 37 - keypad on the bottom.; Figure 3; Electrical Connections; If you are replacing an Analog Temperature Controller P/N 34983; only), refer to Figure 4B for a listing of the new terminal numbers.; If you are replacing any Digital Temperature Controller; , simply reconnect ALL of the original

36 Page 4 of 10 5. Check that the new controller is mounted into its sleeve. Then, slide the assembly into the opening in the panel from the outside. Check that the controller is upright, with the display on top and the keypad on the bottom. 6. Locate the rectangular holes on the top and bottom of t...

Page 38 - Figure 5b

37 Page 5 of 10 Figure 4a Analog temperature controller (P/Ns 28071-0012 and 28071-0018) terminals New temperature controller terminals N o t u s e d . T h e s e terminals provide PID o u t p u t ( g a s o v e n s w i t h m o d u l a t i n g v a l v e ) o r v a r i a b l e N o t u s e d o n s o m e ...

Page 39 - Figure 6; CAUTION; Programming

38 Page 6 of 10 Jumper Setting Loosen the Phillips screw at the bottom center of the faceplate. Then, pull the controller out of its sleeve.Next, access the jumper shown in Figure 6. This jumper affects the signal that is output from Terminals 15 and 16. The jumper MUST be set to the correct positio...

Page 41 - Diagnostic Error Messages

40 Diagnostic Error Messages The controller runs background tests during normal operation. If any problems occur during the tests, an error message flashes in the display. A listing of these diagnostic error messages is shown below. Flashes on the display (alter- nating with the temperature) indicat...

Page 44 - Filter Capacitor Assembly on Temperature Controllers, 9/93

43 SECTION 3 - SERVICING COMPONENTS Appendix - Service Bulletin MM-136 - Electrical Noise Filter Capacitor Assembly on Temperature Controllers, 9/93

Page 46 - C. Operation and Troubleshooting; Thermocouples; Figure 23 - High limit control modules

45 III. HIGH LIMIT CONTROL MODULE On most PS200-series and PS300-series gas ovens, the temperature controller monitors the high limit. All other oven models use a High Limit Control Module that is inde- pendent of the temperature controller.Middleby ovens have used several different types of high li...

Page 47 - Instructions for Service Kit 39733; Appendix - Instructions for Service Kit 39733 -

46 Qty. P/N Description 1 39732 Instructions 1 34982 Watlow high limit control module 1 30693 Reset switch w/ lighted pushbutton 1 35634 Mounting bracket, reset switch 1 35691 Wire set, reset switch (includes 4 wires and 3 1/4/25mm connectors) 1 33812-1 Thermocouple, type J, 6/152.4mm 1 39690 Moun...

Page 51 - D. TESTING THE INSTALLATION

50 Page 5 of 8 D. TESTING THE INSTALLATION 22. Remove the thermocouple wires from the TC + and TC - terminals on the high limit control.23. Attach a Middleby Marshall Thermocouple Source (P/N 27170-0263) to the TC + and TC - termi- nals on the high limit control, in place of the thermocouple...

Page 52 - KEY

51 Page 6 of 8 Figure 7 - United Electric Model 55 replacement: ovens with a cooldown feature KEY SECTION 3 - SERVICING COMPONENTS Appendix - Instructions for Service Kit 39733 - High Limit Conversion Kit for PS300, 310, 350 & 360 Ovens, 5/99

Page 55 - Figure 24 - Thermocouples; B. Thermocouple Functions

54 SECTION 3 - SERVICING COMPONENTS IV. THERMOCOUPLES All temperature controller and high limit functions are based on input from thermocouples. When two wires composed of dissimilar metals are joined together and one of the ends is heated, a continuous current flow is generated. Middleby ovens use ...

Page 56 - Junction Temperature

55 SECTION 3 - SERVICING COMPONENTS 2. Checking the thermocouple with a DC millivolt meter It is possible to check that a thermocouple is reading accurately by using a multimeter set to read DC milli- volts. At 32°F/0°C the thermocouple should read 0 mVDC. This can be checked by inserting the ther- ...

Page 57 - Oven Thermocouple Kit

56 1 Instructions for Service Kits P/Ns 33984 and 33985 Oven Thermocouple Kit Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin, IL 60120 USA (847) 741-3300 FAX (847) 741-4406 This Service Kit provides the parts and instructions necessary to replace one temperature-sensing or hig...

Page 59 - PS360 Series rear wall thermocouples -

58 3 PS360 Series rear wall thermocouples - before 2/96, serial numbers before ASH-0001 Thermocouples on these ovens are located on the rear wall of the baking chamber. They are secured in place by a clamp on the outside of the oven.This Kit eliminates the clamp. The flange of the new ther- mocouple...

Page 62 - PS555 Gas - thermocouples with screw ter-

61 6 PS555 Gas - thermocouples with screw ter- minal connections (no terminal blocks) Thermocouples on these ovens are located on the rear wall. They are secured in place by two screws that are inserted through the holes in the thermocouple flange. These ovens are equipped with a three-lead, flanged...

Page 66 - tions

65 10 Figure 13 Location of High Limit Thermocouple Mounting Hole - PS570S High limit thermocouple position for ovens with LEFT-TO-RIGHT conveyors High limit thermocouple position for ovens with RIGHT-TO-LEFT conveyors PS570S (late) - rear wall thermocouples with left-side AND right-side terminal bl...

Page 70 - Appendices; Bearing lubrication

69 3. Lubricating the blower fan shaft bearings NOTE: Middleby recommends lubricating the blower fan shaft bearings every three months.Use a grease gun to lubricate the main blower fan shaft bearings. See Figure 28. When lubricating the bear- ings: Use a high-quality NLGI #2, lithium soap grease wi...

Page 71 - Fan shaft alignment tool

70 5. Early-style PS200 bearing replacement and alignment NOTE: This procedure is for early-style indirect fan shaft assemblies only, as shown in Figure 25. Bearing replacement procedures for the current-style indirect fan shaft assembly (Figure 26) are provided on Page 72. NOTE: The bracket assembl...

Page 72 - assembly to the current version.

71 Figure 32 Bearing replacement and alignment - early-style PS200 fan shaft assembly Item Qty. Part Number Description 1 1 Not available Back Wall Assembly 2 8 21216-0001 Screw, Hex Cap SS 3/8-16x1 3 16 21422-0001 Lock Washer, Split 3/8 4 20 21416-0001 Flat Washer, SS 3/8 5 1 Not available Indir...

Page 73 - Figure 33 - Four-point alignment test for correct pulley alignment

72 6. Current-style PS200 bearing replacement and alignment NOTE: This procedure is for current-style indirect fan shaft assemblies only, as shown in Figure 26. Bearing replacement procedures for the early-style indirect fan shaft assembly (Figure 25) are provided on Page 70.The following procedures...

Page 77 - Figure 44 - Fuse/circuit breaker locations; Air Pressure

76 A. PS555/570-series ovens All PS555/570-series ovens are equipped with two 1hp blower motors. Each motor indirectly drives a pulley on the shaft of a blower wheel with a fan belt.Two main designs exist for the PS555/570 blower fan sys- tem: PS570/570S design. In this version, the pillow block be...

Page 79 - Part Number Reference; PS500-series blower wheel orientation

78 2. Blower balancing and direction of rotation Proper blower rotation is extremely important. Proper blower rotation is shown in Figure 45.Early PS570 blower wheels were positioned so that the open end of the wheel faced into the baking cham- ber. This was changed on the PS570S (and all later mode...

Page 81 - Figure 49 - PS360-series blower motor centrifugal safety switch; VI. BLOWER MOTOR CENTRIFUGAL SAFETY SWITCH; Air Pressure Safety Switch

80 Figure 49 - PS360-series blower motor centrifugal safety switch S w i t c h VI. BLOWER MOTOR CENTRIFUGAL SAFETY SWITCH (PS360-SERIES) Middleby ovens have a safety feature that prevents the burner/heating elements from activating if the blower(s) are not in operation. On PS360-series ovens, this f...

Page 82 - Figure 50 - Air pressure safety switch models; Burner Blower Motor

81 Figure 50 - Air pressure safety switch models 1. Original-style round air switch Replace with #2 2. Dungs square-case air switch with dial adjustment Replace with same 3. Dungs square-case replacement air switch with screw adjustment Replace with #2 4. Yamatake-Honeywell air switch, non-adjusta...

Page 84 - Air Pressure Switch Replacement Kits, 1/97

83 C. Appendices SECTION 3 - SERVICING COMPONENTS Appendix - Instructions for Service Kits 35624 and 35625 - Air Pressure Switch Replacement Kits, 1/97

Page 86 - Appendix - Instructions to Replace an Alternate Air Switch

85 SECTION 3 - SERVICING COMPONENTS Appendix - Instructions to Replace an Alternate Air Switch P/N 36194 with Service Kit P/N 35624, 3/97

Page 88 - B. Flame Gate Orientation

87 IX. PS570/570S FLAME GATE All PS570/570S ovens produced for Pizza Hut USA through 8/00 were equipped with an adjustable flame gate at the end of the burner tube. The purpose of the flame gate was to direct heat towards the entrance end of the oven to bet- ter suit the customers cooking needs.PS5...

Page 89 - PS200-series gas train; Gas Train Components

88 Figure 54 PS200-series gas train Figure 55 PS310, PS314, PS360 or PS360WB gas train Manual shutoff valve, 1/2 23115-0009 1/2 union 23051-0003 Combination gas control valve, 1/2 45688 Solenoid valve, 1/2 28091-0017 Pilot pressure tap 30185 Bypass line (1/4 aluminum tubing) 15125-0002 (per foo...

Page 92 - NOTE; B. Part Number Reference - Gas Orifices and Gas Conversion Kits

91 PS360WB70/EWB PS360WB70/EWB PS200 PS220/224 PS310/314/360 PS360WB Midco burner Wayne burner PS555 PS570S/PS570G Description 42810-0125 42810-0126 42810-0120 42810-0127 36863 44664 43061 42810-0127 GAS CONVERSION KIT, PROPANE TO NATURAL 22176-0010 22176-0016 22176-0004 22176-0014 31821 22176-0014 ...

Page 93 - C. Component Identification; Burner type; Figure 61 - Midco burner; PS360EWB shown. For different oven models, refer; Modulated gas regulation.; Modulating Valve

92 SECTION 3 - SERVICING COMPONENTS C. Component Identification 1. Burner type Middleby ovens are equipped with one of two main burner designs. Details of these burners are provided below.1. Midco burner - see Figure 61. This burner was used on PS360WB70 and PS360EWB ovens only.Late-production PS360...

Page 95 - Voltage

94 3. Pilot and Proof of Pilot Flame RectificationWith standing pilots, heat is a necessary ingredient for proper thermocouple opera- tion. But this is not the case with IIDS (Intermittent Ignition Device Systems) when flame conduction or rectification is used. To better understand the principles of...

Page 96 - E. Burner Blower Motor; Air shutter adjustment; Wayne burner; The minimum value

95 SECTION 3 - SERVICING COMPONENTS E. Burner Blower Motor The burner blower motor is located on the side or top of the burner housing. Some blowers use a flexible tube to con- nect the blower to the burner, depending on the available space inside the machinery compartment. The burner blower motor d...

Page 98 - Figure 71 - Modulating Gas System; For proper functioning of the modu-; MUST; be; ture Controller; L. Amplifier Board (ovens with a modulating gas

97 SECTION 3 - SERVICING COMPONENTS Digital Temperature Controller MUST BE SET TO PID OPERATING MODE Amplifier Board Modulating Valve To thermocouple white + red - p u r p l e To transformer 24VAC input purple/white b l u e blue/white orange orange/white bypass adjustment screw (under cap) MUST BE F...

Page 99 - M. Combination Gas Control Valve; Pilot and Proof; Figure 72 - Combination Gas Control Valve; Pilot pressure

98 M. Combination Gas Control Valve 1. Part Number Reference - Combination Gas Valve PS360WB70 and PS360EWB ovens are equipped with a 3/4 (19.05mm) gas line. This requires the use of Combination Gas Valve P/N 32569. The valve has a tan plastic cover with a blue On/Off knob. All other oven models...

Page 102 - Ignition Module

101 Figure 75 Voltage Checks for Ignition Module and Combination Gas Valve Ignition Module Voltage Test Points Marked Fused Nonfused MV/PV to PV 3 VAC 24 VAC MV/PV to MV 12 VAC 24 VAC Combination Gas Valve TR to TH 12 VAC 24 VAC TH/TR to TR 3 VAC 24 VAC NOTE: Information on the fused ignition module...

Page 104 - R. Troubleshooting Flowcharts

103 R. Troubleshooting Flowcharts SECTION 3 - SERVICING COMPONENTS

Page 119 - Appendix - Position of Combination Gas Valve Components

118 SECTION 3 - SERVICING COMPONENTS Appendix - Position of Combination Gas Valve Components during Burner Operation, 4/02

Page 120 - ENGLISH; page; PAÑOL; Gas Conversion Kit for Middleby Marshall Ovens; Natural Gas to Propane Operation; Appendix - Instructions for All Gas Conversion Kits

119 ENGLISH - page 1 E S PAÑOL - página 7 1 Instructions for Service Kits 42810-0119, 42810-0122, 42810-0123, 42810-0124, 43062, 44665 Gas Conversion Kit for Middleby Marshall Ovens Natural Gas to Propane Operation KIT COMPONENTS: Qty. PS200 PS220/224 PS310/360 PS360WB PS360WB70/EWB PS555 PS570S Des...

Page 126 - Propane to Natural Gas Operation

125 ENGLISH - page 1 E S PAÑOL - página 7 1 Instructions for Service Kits 42810-0120, 42810-0125, 42810-0126, 42810-0127, 43061, 44664 Gas Conversion Kit for Middleby Marshall Ovens Propane to Natural Gas Operation KIT COMPONENTS: Qty. PS200 PS220/224 PS310/360 PS360WB PS360WB70/EWB PS555 PS570S Des...

Page 132 - Natural Gas to Propane Installation Instructions

131 Combination gas control valve Aluminum pilot tubing Pilot orifice Main orifice holder Solenoid valve (PS360WB70 only) Low flame bypass (PS360WB70 only) WARNING This conversion kit is to be installed by a Middleby Marshall Authorized Service Organization in accordance withthe manufacturer’s instr...

Page 133 - MAIN ORIFICE REPLACEMENT; Figure 4

132 5. GAS LEAK TEST 5.1 Paint all pipe connections from the gas union to the burner plenum, and the aluminum pilot and low flame orifice tubing connections,with a solution of soap and water (2/3 soap, 1/3 water is recommended). Any bubbles that are visible indicate a gas leak. 5.2 If a gas leak is ...

Page 135 - Figure 8; PROPANE

134 Figure 7 Red “LPG.” label placement (on burner housing) Figure 8 Conversion information label THIS APPLIANCE HAS BEEN CONVERTED ON _______________ TO ______________ GAS WITH KIT NO. ________________ BY _______________ , WHO ACCEPTS THE RESPONSIBILITY FOR THE CORRECTNESS OF THIS CONVERSION. MODEL...

Page 136 - Propane to Natural Gas Installation Instructions

135 Combination gas control valve Aluminum pilot tubing Pilot orifice Main orifice holder Solenoid valve (PS360WB70 only) Low flame bypass (PS360WB70 only) WARNING This conversion kit is to be installed by a Middleby Marshall Authorized Service Organization in accordance withthe manufacturer’s instr...

Page 139 - NATURAL

138 Figure 7 Yellow “NAT.” label placement (on burner housing) Figure 8 Conversion information label THIS APPLIANCE HAS BEEN CONVERTED ON _______________ TO ______________ GAS WITH KIT NO. ________________ BY _______________ , WHO ACCEPTS THE RESPONSIBILITY FOR THE CORRECTNESS OF THIS CONVERSION. MO...

Page 140 - Appendix - Equivalent Orifice Sizes at High Altitudes

139 SECTION 3 - SERVICING COMPONENTS Appendix - Equivalent Orifice Sizes at High Altitudes (Includes 4% reduction for each 1000 ft. above sea level), 4/02

Page 142 - Individual element electrical data; Fan shroud removed

141 SECTION 3 - SERVICING COMPONENTS 5. Checking the Heating Elements The most common problems encountered with electric heaters are: Open or bad connections. Open, shorted or grounded heating elements. To troubleshoot the heating elements, disconnect all leads at the back wall and check each ele...

Page 143 - be set to the on-off operating mode. Refer to; Temperature Controller; Removing the element bank mounting bolts

142 SECTION 3 - SERVICING COMPONENTS B. PS310/360-series ovens 1. Description of heating system All PS310/360-series electric ovens use an on-off sys- tem for heater activation. When the oven demands heat, the temperature controller activates mercury contactors that in turn activate the heaters at 1...

Page 144 - Element bank removed - spacer bracket visible

143 SECTION 3 - SERVICING COMPONENTS 4. Heater specifications PS310/360-series electric ovens use 18 heating elements in 3 banks (6 elements per bank). 208V elements are used for ovens with a 208V supply. 240 volt elements are used for ovens with a 220, 230 or 240V supply. 240V elements are al...

Page 146 - PS555 electric oven heating element removal

145 SECTION 3 - SERVICING COMPONENTS 6. Changing Heating Elements NOTE: Wires going from the controller assembly contactor to the heating elements are rated at 392°F/ 200°C. DO NOT, under any circumstances, use a wire of lesser rating or quality.To remove the element: Remove the blower belt on the ...

Page 147 - D. Mercury Contactor Replacement

146 SECTION 3 - SERVICING COMPONENTS D. Mercury Contactor Replacement Early PS200-series electric ovens and all PS310/360-se- ries electric ovens use mercury contactors to activate the heating elements. Each pole in the contactor is a separate mercury-filled tube that is individually replaceable. Th...

Page 150 - SECTION 4

149 SECTION 4 - ELECTRICAL WIRING DIAGRAMS I. COMPONENT WIRING A. Temperature Controllers SECTION 4 ELECTRICAL WIRING DIAGRAMS

Page 151 - SECTION 4 - ELECTRICAL WIRING DIAGRAMS

150 B. Ignition Modules SECTION 4 - ELECTRICAL WIRING DIAGRAMS

Page 152 - OVENS

151 PS200-series gas oven (with solenoid valve and analog temp control), 208/240V main blower motor, 120V control circuit 208/240V, 50/60 Hz, 1 Ph, 3 pole, 4 wire supply (2 hot, 1 neutral, 1 ground) SECTION 4 - ELECTRICAL WIRING D IAGRAMS II. PS200-SERIES OVENS

Page 161 - SECTION

160 III.P S 360-SERIES OVENS PS310/314/360/360WB gas oven (with analog temp control), 208/240V main blower motor, 120V control circuit 208/240V, 50/60 Hz, 1 Ph, 3 pole, 4 wire supply (2 hot, 1 neutral, 1 ground) SECTION 4 - ELECTRICAL WIRING D IAGRAMS

Page 173 - SECTION 5 - REFERENCE; 5-point preventative maintenance checklist; SECTION 5

172 SECTION 5 - REFERENCE 25-point preventative maintenance checklist [ ] 1. Check and clean (blow out) machinery/control compartment.[ ] 2. Check and clean (blow out) main blower motors.[ ] 3. Check and clean (blow out and brush) axial fans.[ ] 4. Check burner blower motor and fan operation.[ ] 5. ...

Page 174 - Fractional inches to decimal and millimeter equivalents

173 SECTION 5 - REFERENCE Fractional inches to decimal and millimeter equivalents Decimal equivalents of drill sizes

Page 175 - General conversion factors; Pressure conversions

174 SECTION 5 - REFERENCE atmospheres (std. - 760mm of mercury at 32°F/0°C) ...................... 14.696 ..... lbs./sq. inch atmospheres ........................ 76.0 ....... cm of mercury atmospheres ....................... 29.92 ...... in. of mercury atmospheres ....................... 33.90 .......

Page 177 - Common electrical wiring diagram symbols

176 SECTION 5 - REFERENCE Common electrical wiring diagram symbols

Page 178 - Common electrical wiring diagram symbols (continued)

177 SECTION 5 - REFERENCE Common electrical wiring diagram symbols (continued)