Manitowoc GT Series Service Manual
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Manitowoc GT Series Service Manual

Garland gt series u.s. range ut series
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Service Manual
Garland GT Series
US Range UT Series
Heavy Duty Gas
Counter Equipment
FOR YOUR SAFETY
DO NOT store or use gasoline or other flammable vapors or liquids in the vicinity of this or any other
appliance
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage,
injury, or death. Read the installation, operating and maintenance instructions thoroughly before
installing or servicing this equipment.
IMPORTANT
Please read all sections of this manual and retain for future reference.
This product has been certified as commercial cooking equipment and must be installed by
professional personnel as specified.
Users are cautioned that maintenance and repairs must be performed by a Garland/US Range
Authorized Service Agent using genuine Garland replacement parts. Garland/US Range will have no
obligation with respect to any product that has been improperly installed, adjusted, operated or not
maintained in accordance with national and local codes or installation instructions provided with
the product, or any product that has its serial number defaced, obliterated or removed, or which has
been modified or repaired using unauthorized parts or by unauthorized service agents. For a list of
authorized service agents, please refer to the Garland web site at www.garland-group.com
Garland Commercial Ranges, Ltd.
1177 Kamato Road
Mississauga, Ontario L4W 1X4 Canada
General Inquiries P: 905 624 0260 F: 905 624 5669
www.Garland-Group.com
TM
Parts & Service
1 800 427 6668 (Phone, US & Canada)
1 800 361 7745 (Fax, US & Canada)
A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1)

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Summary of Contents for Manitowoc GT Series

  • Page 1 This product has been certified as commercial cooking equipment and must be installed by professional personnel as specified. Users are cautioned that maintenance and repairs must be performed by a Garland/US Range Authorized Service Agent using genuine Garland replacement parts. Garland/US Range will have no...

  • Page 2: Safety Requirements

    It is in your own interest and that of safety to ensure that the law is complied with. Refer to Garland/US Range Installation And Operation Manual for further details. Your Garland/US Range Authorized Service Agent (ASA) is well qualified to provide this service.

  • Page 3: Table Of Contents

    Contents ..............2 Safety Requirements .

  • Page 4: Rating Plate, Serial Number Information

    Rating Plate, Serial Number Information Rating Plate The rating plate is affixed to a bracket mounted at the rear of the unit, and visible from the front. The grease drawer may need to be removed to view the rating plate. Serial Number (Year/Month Information) From June 2004 to Present, the Serial Number is 13 Digits Long.

  • Page 5: Model Code Information

    SU (Step-Up) + Number of Burners Nominal Width of Equipment Fuel Type: Gas (Propane or Natural), Electric Open Burner Garland/US Range Heavy Duty Counter Top Model Griddle Models: • GTGG__-G__ / UTGG__-G__ Valve-Controlled Griddle Model (out-of-production) • GTGG__-G__M / UTGG__-G__M Valve-Controlled Griddle Model with Suffix M •...

  • Page 6: Technical Data

    Technical Data Model Information Garland Models US Range Models Model Information GTOG12-2 UTOG12-2 Gas, Two Open Burners, 12” Wide GTOG24-4 UTOG24-4 Gas, Four Open Burners, 24” Wide GTOG36-6 UTOG36-6 Gas, Six Open Burners, 36” Wide GTOG48-8 UTOG48-8 Gas, Eight Open Burners, 48” Wide...
  • Page 7 Technical Data Model Information Garland Models US Range Models Model Information GTOG24-SU4 UTOG24-SU4 Gas, Four Open Burners Step Up, 24” Wide GTOG36-SU6 UTOG36-SU6 Gas, Six Open Burners Step Up, 36” Wide GTOG48-SU8 UTOG48-SU8 Gas, Eight Open Burners Step Up, 48” Wide...
  • Page 8 Technical Data Model Information Garland Models US Range Models Model Information GTGG24-G24 UTGG24-G24 Gas, Valve Controlled Griddle, 24” Wide GTGG36-G36 UTGG36-G36 Gas, Valve Controlled Griddle, 36” Wide GTGG48-G48 UTGG48-G48 Gas, Valve Controlled Griddle, 48” Wide GTGG60-G60 UTGG60-G60 Gas, Valve Controlled Griddle, 60” Wide...
  • Page 9 Technical Data Model Information Garland Models US Range Models Model Information GTGG24-G24M UTGG24-G24M Gas, Valve Controlled Griddle, 24” Wide GTGG36-G36M UTGG36-G36M Gas, Valve Controlled Griddle, 36” Wide GTGG48-G48M UTGG48-G48M Gas, Valve Controlled Griddle, 48” Wide GTGG60-G60M UTGG60-G60M Gas, Valve Controlled Griddle, 60” Wide...
  • Page 10 Technical Data Model Information Garland Models US Range Models Model Information GTGG24-GT24 UTGG24-GT24 Gas, Thermostatically Controlled Griddle, 24” Wide GTGG36-GT36 UTGG36-GT36 Gas, Thermostatically Controlled Griddle, 36” Wide GTGG48-GT48 UTGG48-GT48 Gas, Thermostatically Controlled Griddle, 48” Wide GTGG60-GT60 UTGG60-GT60 Gas, Thermostatically Controlled Griddle, 60” Wide...
  • Page 11 Technical Data Model Information Garland Models US Range Models Model Information GTGG24-GT24M UTGG24-GT24M Gas, Thermostatically Controlled Griddle, 24” Wide GTGG36-GT36M UTGG36-GT36M Gas, Thermostatically Controlled Griddle, 36” Wide GTGG48-GT48M UTGG48-GT48M Gas, Thermostatically Controlled Griddle, 48” Wide GTGG60-GT60M UTGG60-GT60M Gas, Thermostatically Controlled Griddle, 60” Wide...
  • Page 12 Technical Data Model Information Garland Models US Range Models Model Information Gas Broiler, Non-Adjustable Grates and Cast Iron GTBG24-NR24 UTBG24-NR24 Radiant Gas Broiler, Non-Adjustable Grates and Cast Iron GTBG36-NR36 UTBG36-NR36 Radiant Gas Broiler, Non-Adjustable Grates and Cast Iron GTBG48-NR48 UTBG48-NR48...
  • Page 13 Technical Data Model Information Garland Models US Range Models Model Information Gas, Broiler W/Adjustable Grates and Cast Iron GTBG24-AR24 UTBG24-AR24 Radiant Gas, Broiler W/Adjustable Grates and Cast Iron GTBG36-AR36 UTBG36-AR36 Radiant Gas, Broiler W/Adjustable Grates and Cast Iron GTBG48-AR48 UTBG48-AR48...
  • Page 14 Technical Data Model Information Garland Models US Range Models Model Information Gas,Broiler W/Adjustable Grates and Ceramic GTBG24-AB24 UTBG24-AB24 Coals, 24”Wide Gas,Broiler W/Adjustable Grates and Ceramic GTBG36-AB36 UTBG36-AB36 Coals, 36”Wide Gas,Broiler W/Adjustable Grates and Ceramic GTBG48-AB48 UTBG48-AB48 Coals, 48”Wide Gas,Broiler W/Adjustable Grates and Ceramic...

  • Page 15: General Pilot Procedures

    General Pilot Procedures Lighting Standing Pilots - All Models After the appliance has been installed by a licensed 5. Follow the pilot lighting procedure applicable to gas trades-person and all connections, pilot lights and your model. The pilot should ignite within a few controls have been inspected for proper operation.

  • Page 16: Griddles With Sit Thermostats

    Shutdown Procedure on Griddles with SIT Thermostats The Garland/US Range SIT thermostat control knob is configured to leave the pilot flame on continuously. The knob is designed with a tab which will not permit complete pilot shutdown. In order to shutdown the griddle pilot flame completely, you must perform Steps 1 to 3 below.

  • Page 17: Gas Pressure Regulator

    Figure 3: Gas pressure regulator connection is designed straight through. Garland recommends the use of certified flexible gas hose and quick disconnect assembly to allow the unit to be moved in the event an adjustment of the gas pressure regulator is required.

  • Page 18: Open Top Burners Adjustments

    3. Turn on the gas flow and ignite the burner. 4. Rotate the air shutter to obtain the 1/2” stable, sharp inner blue cones (Figure 7). Open Burner Figure 7 US Range and Garland Burner Heads: US Range Garland Burner Head Star Burner Head...

  • Page 19: Troubleshooting - Open Top Burners

    Troubleshooting — Open Top Burners WARNING Inspection, testing and repair of equipment should be performed only by qualified service personnel. Certain procedures in this section require gas tests or measurements while gas is applied to the unit. Use extreme caution at all times.

  • Page 20: Griddle Adjustments

    Griddle Adjustments Griddle Spark Igniter Garland has two different igniter systems on the griddle units: 1. Push-button piezo igniter system 2. Electronic Spark igniter system 1. Push-button Piezo igniter system (Figure 8) consists of a small, spring-loaded hammer, which creates voltage when a button is pressed.

  • Page 21: High Tension Lead (Htl) & Insulation

    Griddle Adjustments (continued) 2.2 Removal and Replacement of Electronic Spark REAR VIEW Generator (ESG); a. Verify the rating plate voltage to ESG specification. See section 2.3 below. b. Ensure power cord is unplugged. Electronic Spark c. Before removing ESG, check wires for continuity Generator (ESG) in case a wire is damaged.

  • Page 22: Thermostatic Griddle Adjustments (Sit Control)

    Thermostatic Griddle Adjustments (SIT Control) SIT Valve Control Garland’s Heavy Duty Counterline contains a gas control system enclosed in one component — the SIT Control. The griddle pilot safety system is an internal subcomponent of the control. This control (part#CK4528339) is modified to snap action.
  • Page 23 Griddle Adjustments — SIT Thermostat (continued) Closed Circuit Test (To test magnet & thermostat as a complete unit) Terminal Boss To perform the closed circuit test, remove the thermocouple lead from Adapter the magnet contact. Place an adapter in the magnet contact and turn the thermocouple BLACK Thermocouple Tube PN 4526299...
  • Page 24 Griddle Adjustments — SIT Thermostat (continued) Thermostatic Griddle Pilot Adjustment 1. Adjustment with a screw located on the SIT control (refer to photo). 2. Turn the screw clockwise to reduce the gas flow. 3. Precisely adjust the pilot flame to a slight yellow tip to provide maximum performance. Flame must engulf only the tip of thermocouple.
  • Page 25 Griddle Adjustments — SIT Thermostat (continued) SIT Valve Calibration Instructions These are mandatory steps for thermostat validation in the field. You MUST perform these steps before replacing. They confirm if the SIT griddle control is working as per specification or is failing. Note: •...

  • Page 26: Thermostatic Griddle Adjustments (Gs Control)

    Griddle Adjustments — GS Thermostat Thermostatic Griddle Adjustments (GS Control) GS Thermostat Calibration Instructions 1. Use a test instrument with a special disc type thermocouple or a reliable surface type pyrometer. Note A drop of oil on the face of the disc will provide better contact with the griddle plate. 2.
  • Page 27 Griddle Adjustments — GS Thermostat (continued) Replace a GS Thermostat Note: It is not required to raise the griddle assembly for thermostat replacement. 1. Remove knobs from all valves and thermostats. 2. Un-install screws retaining the valve panel to unit and remove valve panel from unit. 3.

  • Page 28: Griddles With Hi/Low Valves

    Griddle Adjustments — Hi/Low Valve Griddles with Hi/Low Valves The Hi/Low Gas Valves are located behind the knobs, connected to the manifold. Use a straight blade pocket screwdriver to adjust low setting higher or lower. Reminder Adjustments on valves are for the low flames setting only. See section “Adjuct Hi-Lo Valve” below.

  • Page 29: Troubleshooting - Griddles

    Troubleshooting — Griddles WARNING Inspection, testing and repair of equipment should be performed only by qualified service personnel. Certain procedures in this section require gas tests or measurements while gas is applied to the unit. Use extreme caution at all times. If test points are not easily accessible, disconnect main gas line, attach test equipment and reapply gas supply to continue the test.

  • Page 30: Broiler Adjustments

    Broiler Adjustments Pilot Adjustment Valves • Also known as gum valves (Figure 16). Adjustable Set-Screw • Available in single or double. • Adjustable with a set-screw using a straight blade pocket screwdriver. • Turn set-screw counter-clockwise to increase flow; turn set- Pilot Tip Figure 16 screw clockwise to decrease flow.

  • Page 31: Burner Gas / Air Shutter Adjustment

    Broiler Adjustments (continued) Burner Gas / Air Shutter Adjustment Variations in field conditions, and/or rough handling of the equipment in transit may result in the need for adjustment of the primary air to the burners. Follow the steps below to provide a sharp blue flame at the full rate (open valve fully for the maximum gas flow).

  • Page 32: Troubleshooting - Broilers

    Troubleshooting — Broilers WARNING Inspection, testing and repair of equipment should be performed only by qualified service personnel. Certain procedures in this section require gas tests or measurements while gas is applied to the unit. Use extreme caution at all times. If test points are not easily accessible, disconnect main gas line, attach test equipment and reapply gas supply to continue the test.
  • Page 33 Notes A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1) Page 33...

  • Page 34: Wiring Diagram (Gtgg/Utgg

    Wiring Diagram (GTGG/UTGG__M Models Electric Spark) Page 34 A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1)

  • Page 35: Wiring Diagram (Gtgg/Utgg Electric Spark)

    Wiring Diagram (GTGG/UTGG Electric Spark) A_GC_SM_HDGASCOUNTERSERV_GT-UT-SERIES (Rev 1) Page 35...

  • Page 36: Gas Conversion Kits (From Natural To Propane)

    Gas Conversion Kits (from Natural to Propane) PART # KIT COMPONENTS BTU/HR PER BURNER Open Tops and Step-Up Open Tops (Kit part# 4528882) 26,000 M8-53 #53 Orifi ce – Open Top Burners (Hotplate Only) – Pro 27,000 M8-1.6MM 1.6Mm Orifi ce – Open Top Burners (Step Up Only) – Pro 4528897 Instructions Conversion Kit Hd Hotplate –...

  • Page 37: Gas Conversion Kits (From Propane To Natural)

    Gas Conversion Kits (from Propane to Natural) PART # KIT COMPONENTS BTU/HR PER BURNER Open Tops and Step-Up Open Tops (Kit part# 4528881) M8-36 #36 Orifi ce - Open Top Burners (All Models) - Nat 30,000 4528897 Instructions Conversion Kit Hd Hotplate – Nat/Propane 4528892 Label –...

  • Page 38: Bulletins & Revision History

    Bulletins & Revision History Bulletins BULLETIN # SUBJECT DATE 03-B-2010-SP New Heavy Duty Gas Counter line 20-JULY-10 07-B-2010-S Wire Link Rod Upgrade 26-OCT-10 GAR-01-11-AIC Wire Link Rod & Lifting Bar Assembly Lock Upgrades 4-FEB-11 GAR-02-11-AIC Correct Gas Connections for SIT Griddle Controls 25-MAR-11 GAR-05-11-AIC Service Kit for Momentary Switch Part Numbers 4527834 &...
  • Page 40 GT/UT Series Heavy Duty Counter Equipment — Service Manual Garland Commercial Ranges, Ltd. Parts & Service 1177 Kamato Road 1 800 427 6668 (Phone, US & Canada) Mississauga, Ontario L4W 1X4 Canada 1 800 361 7745 (Fax, US & Canada) General Inquiries P: 905 624 0260 F: 905 624 5669 www.Garland-Group.com...

This manual is also suitable for:

Ut seriesGarland gtog12-2Garland gtog24-4Garland gtog36-6Garland gtog48-8U.s. range og12-2 ... Show all

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