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GARLAND

WELBILT COMPANY

BUILT TO LEAD... BUILT TO LAST

 

 

 

SERVICE  MANUAL 

THE “MASTER” 

GAS CONVECTION 

OVENS 

 

 

Models covered in this manual are: 

MCO-GS-10M: 

M

ASTER 

C

ONVECTION

 Oven - G

AS

 S

TANDARD 

D

EPTH 

-(10)S

INGLE

 D

ECK

 Manual C

ONTROL

 

MCO-GS-10E: 

M

ASTER 

C

ONVECTION

 O

VEN

 - G

AS

 S

TANDARD

 D

EPTH

 -(10)Single D

ECK

 E

LECTRONIC

 C

ONTROL

 

MCO-GD-10M: 

M

ASTER 

C

ONVECTION

 Oven - G

AS

 D

EEP 

D

EPTH 

-(10)S

INGLE

 D

ECK

 Manual C

ONTROL

 

MCO-GD-10E: 

M

ASTER 

C

ONVECTION

 Oven - G

AS

 D

EEP 

D

EPTH 

-(10)S

INGLE

 D

ECK

 E

LECTRONIC

 C

ONTROL

 

GARLAND Commercial Industries, Inc. 

185 East South Street   

   Freeland, Pennsylvania  18224 

DIRECT “ON-SITE” SERVICE 1-800-451-1165   

   GENERAL INFORMATION 1-800-424-2411 

 
 
 
FORM #GCI-MCOVN 

PRINTED IN THE U.S.A. 

Summary of Contents for MCO-GD-10M

Page 1: ...ASTER CONVECTION OVEN GAS STANDARD DEPTH 10 Single DECK ELECTRONIC CONTROL MCO GD 10M MASTER CONVECTION Oven GAS DEEP DEPTH 10 SINGLE DECK Manual CONTROL MCO GD 10E MASTER CONVECTION Oven GAS DEEP DEP...

Page 2: ...are attempting to trouble shoot Table of Contents SECTION 1 SPECIFICATION DIMENSIONS 3 GAS CONVECTION OVEN GAS SPECIFICATIONS 4 DIMENSIONS SPECIFICATIONS 4 SECTION 2 OVERVIEW OF OPERATIONAL SEQUENCES...

Page 3: ...ND ADJUSTMENT OF THE DOOR CHAIN 19 DISASSEMBLY OF THE LEFT DOOR 19 DISASSEMBLY OF THE RIGHT DOOR W O WINDOW 20 TO REPLACE OR ADJUST DOOR LATCH MECHANISM 22 TO REPLACE CONVECTION OVEN MOTOR ASSEMBLY 22...

Page 4: ...STD 43 1 4 DEEP 1 7 8 197mm 37mm 60mm x 127mm FLUE 1099mm DEEP 997mm STD 972mm 451mm 25 1 2 57 1 2 32 38 54 9 16 1 2 N P T GAS INLET 1 1 2 38mm 813mm 38 965mm 965mm 1461mm 648mm 1386mm 13mm Single Dec...

Page 5: ...e door switch to the thermostat and the Hi Lo Fan switch 2 Select Hi or Lo speed the motor will now be operational 3 Rotate the temperature dial to desired temperature The thermostat will now call for...

Page 6: ...hted Weighting adding mass to the test instrument compensates for oven temperature changes by making the test instrument less sensitive to these constant changes in temperature Note How this weighting...

Page 7: ...r 4 times second place your temperature sensor in the geometric center of the empty oven Once the oven has been allowed to preheat record the temperature at which the burners cycle ON and OFF Average...

Page 8: ...ays now close 4 The AUX relay sends Line Voltage to the motor relay coil closing the circuit to the Hi Lo Fan Switch The motor now operational causes the centrifugal switch to close and send the Neutr...

Page 9: ...elay outputs not enabled when cooking If this failure appears in the display the control cannot turn the relays on even when cooking The control should be replaced F6 No 60 Hz input The control does n...

Page 10: ...l display in the first hour minutes seconds Above the first hour the timer will display in hours minutes The diplay will continue to blink until the START TIMER key is depressed The resolution of the...

Page 11: ...digits to X20 3 Depress both the Start and Cancel buttons for five seconds 4 Rotate either dial to display FFF or CCC in the temperature display 1 Depress the Cancel button to lock in TIMER RESOLUTION...

Page 12: ...t 1 parameters time temp fan speed etc Press Event key to chain 2 nd event 4 Enter Event 2 parameters 5 Continue procedure up to six events 1 Press Pgm Mode on off to exit program mode ELECTRONIC PILO...

Page 13: ...tat or controller above required temperature Observe system response Establish type of malfunction or deviation from normal operation Use the S86 Intermittent Pilot System Trouble Shooting Table to ch...

Page 14: ...across PV MV PV terminals on module If voltage is okay replace gas control if not replace module SPARK STOPS WHEN PILOT IS LIT NOTE If S8600B H S8610B H goes into lockout reset system For S8600M wait...

Page 15: ...Move the free end slowly toward the stud terminal to establish a spark and then pull the lead wire slowly away from the stud Note the length of the gap at which arcing stops CAUTION Do not touch eithe...

Page 16: ...rifice Dirty lint screen if used Dirty primary air opening if there is one Pilot adjustment at minimum WAVING BLUE FLAME Check for Excessive draft at pilot locations Recirculating products of combusti...

Page 17: ...NS Top Front Center Door Chain Door Catch Right Front Control Panel 24v Transformer Ignition module Redundant gas valve Lower Front Door Micro Switch Data Plate Burner Package Inside Oven Oven Convect...

Page 18: ...Phillips sheet metal screw that attach the retainer to the oven s front frame 4 Remove stainless steel door gasket 5 Replace stainless steel door gasket and to reverse above procedure to re install FI...

Page 19: ...o Reinstall Doors onto Convection Oven 1 Reverse procedure above 2 Close doors 3 Reinstall the door chain Installing and Adjusting Door Chain 4 Make sure two links are between sprocket and door rod an...

Page 20: ...door window bezel 4 Remove 2 hex head m s 20 x from the door liner that attach hold down straps to the door liner 5 Lift out the door frame 6 Carefully pry off the door window for door liner 7 To remo...

Page 21: ...been removed from the oven refer to instructions on page 19 remove 9 truss head s m s 10 x from the top bottom and left side as shown from the door panel 2 Pry the door liner apart from the door panel...

Page 22: ...s and remove all oven racks 2 Remove 4 10 sheet metal screws that secure air baffle and remove air baffle 3 Remove six hex nut 1 4 20x7 16 2A and lock washers 4A from motor mounting studs 4 Place a pi...

Page 23: ...h the mounting tabs on motor as shown Secure with two hex nuts 1 4 20 4 Insert shaft of motor through the hub of the blower wheel Space the blower wheel away from the inner motor mounting plate 5 Secu...

Page 24: ...n the inside of the combustion shroud For ovens that are 80 000 B T U s there are four burners 60 000 B T U s there are three burners as shown in the above illustration and 40 000 B T U s there are tw...

Page 25: ...25 SECTION 4 COMMON WIRE DIAGRAMS...

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