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Despatch LBB 2-18 - User Manual

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LBB Series Oven Owners Manual PREFACE
Version 20
LBB SERIES OVEN
OWNER’S MANUAL
C-188
PN 336979
VERSION 20
4/2018

Table of Contents

Questions and Answers

  • M
    matakathleenSep 12, 2025
    What to do if the door of my Despatch Oven will not stay closed?
    • B
      bpetersonSep 12, 2025
      If the door of your Despatch Oven won't stay closed, it's likely due to inadequate latch tension. Ensure the latch strike is contacting the center of the latch. Adjust the mounting angle to center as required. Increase latch tension by turning screws on the end of the latch clockwise. Adjust in even increments on all four screws to keep door pull even.
  • B
    Bryan JonesSep 13, 2025
    Why is my Despatch Oven making a grinding noise?
    • V
      vnormanSep 13, 2025
      A grinding noise in a Despatch Oven suggests the fan wheel has shifted or fallen. Inspect the wheel and reposition it within 0.25” from the top of the housing.
  • M
    Mary TylerSep 15, 2025
    What to do if the door of my Despatch Oven closes into top or bottom latch only?
    • K
      Kim TravisSep 15, 2025
      If the door of your Despatch Oven closes into only the top or bottom latch, it's likely due to uneven latch tension adjustment. Ensure that the latch strike is contacting the center of the latch. Adjust mounting angle as required. Adjust door for even top and bottom latch tension by turning screws on ends of latch. Clockwise increases tension on latch. Counterclockwise decreases tension.

Summary

1. About This Manual

1.1. Important User Information

Essential information for safe and effective oven operation.

1.4. Conventions

1.5.3. Power

1.5.4. Temperature

Temperature Performance Data

Time to temp, recovery, uniformity, and control stability.

2. Safety

2.1. Safety Information

General safety guidelines and warnings for oven operation.

2.1.1. Lockout Procedures

Steps for safely de-energizing equipment before maintenance.

3. Theory of Operation

4. Assembly & Setup

4.2.3. Wiring & Power Connections

Wiring and Power Connection Guidance

Guidance on connecting the oven to the electrical supply.

5. Operation

5.3. Operating Procedure-Standard Control Instrument

5.3.1. Start Oven

Detailed steps for powering on and starting the oven.

5.4. Working with the Control Instrument

5.4.1. Change Setpoint

Procedure for adjusting the oven's temperature setpoint.

5.4.5. Set the High Limit

5.4.5.1. Change the High Limit Instrument Setpoint

Procedure to set the high limit temperature setpoint.

6.4. Routine Tests

6.5.1. Replace the Control Instrument

6.5.2. Replace High Limit Instrument

6.5.4. Replace Heater Unit

6.5.5. Replace Fan Motor

7. Troubleshooting

Common Technical Issues and Remedies

Table of common problems, causes, and suggested solutions.

7.1. DES2000 Control Parameters Check

Control Parameters Verification

Steps to check and verify DES2000 control instrument parameters.

7.2. Hi Limit L91 Hi-Limit Reset

Hi-Limit Instrument Reset Procedure

Procedure for resetting the high limit instrument.

Despatch LBB 2-18 Specifications

General IconGeneral
Heating Zones1
Control SystemDigital control
Interior Dimensions18 x 18 x 18 inches
ConstructionStainless steel interior
InsulationMineral wool insulation
Temperature Range15 °C above ambient to 260 °C (500 °F)

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