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Masterbuilt MPS 330G - User Manual

Masterbuilt MPS 330G
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Master it. Masterbuilt.
MPS 330G, MPS 340G
Welcome to the family. Let’s get started.
Manual Code: 9805180020 180830-GSB
PROPANE SMOKER
Manual applies to the following model number(s)
These numbers are located on the rating label of the unit.
Mfg. Date - Serial Number
Your model number
MB20053718, MB20053818, MB20053918, MB20054018,
MB20054118, MB20054218
Please record this information immediately and keep in a safe place for future use.
IMPORTANT
AGA certificate No. 8687 G

Table of Contents

Questions and Answers

  • B
    Brandon CardenasAug 18, 2025
    What to do if I have a grease fire or excessive flame in Masterbuilt MPS 330G Smokers?
    • E
      Emily ShortAug 18, 2025
      If you experience a grease fire or excessive/continuous flame in your Masterbuilt Smoker, it's likely due to grease build-up on or around the burner area. Immediately turn off both the smoker control knob and the gas cylinder valve. Allow the flames to extinguish and give the unit time to cool down. Then, clean grease and food particles from around the burner or burner area and surrounding surfaces.
  • J
    James AtkinsAug 20, 2025
    Why are the flames blowing out on my Masterbuilt Smoker?
    • D
      dennis89Aug 21, 2025
      If the flames are blowing out on your Masterbuilt Smoker, it is likely because the LP gas is low. Refill the LP cylinder.
  • R
    Rebecca EdwardsAug 23, 2025
    What causes low flame output in Masterbuilt MPS 330G Smokers?
    • A
      Anthony GarzaAug 23, 2025
      Low flame output in your Masterbuilt Smoker is often caused by being out of fuel. Refill or replace with a full LP cylinder.
  • S
    Stephanie GregoryAug 26, 2025
    What to do if there is a flare-up in Masterbuilt MPS 330G Smokers?
    • K
      Katelyn LopezAug 26, 2025
      A flare-up can occur in Masterbuilt Smokers due to several reasons. It could be caused by excessive grease buildup, in which case you should clean the burner and the inside of the unit. Another cause might be excessive fat on the meat being cooked, so trim the fat off the meat. Finally, the cooking temperature may be too high, so adjust or lower the temperature accordingly.
  • Z
    zgonzalezAug 28, 2025
    Why is my Masterbuilt Smoker flame not staying lit?
    • C
      cherreraAug 28, 2025
      If the flame does not remain lit after igniting on your Masterbuilt Smoker, it may be because the flame sensor wire is loose. To fix this, turn off the gas, disconnect the LP cylinder, and tighten the flame sensor wire to the valve.
  • O
    olesterAug 30, 2025
    What to do if my Masterbuilt Smoker has a fire under the control panel?
    • C
      Chase HoffmanAug 30, 2025
      If there is a fire under the control panel of your Masterbuilt Smoker, it is likely due to a fire in the burner tube caused by a burner blockage. Turn off both the smoker control knob and the gas cylinder valve. Once the fire is out and the burner has cooled, remove and inspect the burner for spiders, nests, rust, or other debris.
  • D
    dawn22Sep 1, 2025
    What to do for persistent grease fire in Masterbuilt MPS 330G Smokers?
    • G
      George LittleSep 1, 2025
      If you have a persistent grease fire in your Masterbuilt Smoker, it's likely because grease is trapped by food buildup around the burner system. Turn the smoker control knob and gas cylinder valve off. Allow the fire to extinguish and the unit to cool down. Once cool, remove and clean the affected parts.
  • S
    Stephen MurraySep 4, 2025
    What to do if my Masterbuilt Smoker has a flashback (fire in burner tube)?
    • J
      jacksonamandaSep 4, 2025
      If you experience a flashback (fire in the burner tube) in your Masterbuilt Smoker, it indicates that the burner and/or burner tube has a blockage. Turn the smoker control knob and gas cylinder valve off. Then, clean the burner and/or burner tube.
  • B
    Bradley CobbSep 6, 2025
    Why is gas leaking between LP cylinder and regulator connection on Masterbuilt MPS 330G?
    • T
      twhiteSep 6, 2025
      Gas leaking between the LP cylinder and regulator connection on your Masterbuilt Smoker can occur due to improper installation, a connection that is not tight enough, damaged threads, or a bad rubber seal. First, turn off the gas cylinder valve, then re-attach the regulator to the cylinder. Also, visually inspect the rubber seal for damage. If the issue persists, turn off the gas cylinder valve and return the cylinder to your gas provider/supplier.
  • J
    Jeremiah DuncanSep 8, 2025
    Why is gas leaking from a cracked, cut, or burned hose on Masterbuilt Smokers?
    • P
      Paul CollinsSep 8, 2025
      If gas is leaking from a cracked, cut, or burned hose on your Masterbuilt Smoker, it's due to a damaged hose. Immediately turn off the gas at the LP cylinder and replace the hose. You can also contact Masterbuilt at 1.800.489.1581.

Summary

Safety Warnings and Hazards

Carbon Monoxide and General Dangers

General Safety Guidelines

Read All Instructions Carefully

Smoker Operation

Pre-Season, Operation, and Cleaning

Steps for initial setup, daily operation, wood usage, and cleaning.

Ignition and Gas Valve Connection

Regulator Connection and Burner Ignition

How to connect the regulator and ignite the smoker's burner.

Smoker Assembly - Main Structure

Assemble Base, Cabinet, and Legs

Steps for building the primary cabinet, base, and attaching legs.

Smoker Assembly - Burner and Controls

Install Burner, Valve, Ignition, Sensors

Connecting burner, valve, ignition, and routing temperature sensors.

Smoker Assembly - Internal Components

Install Internal Components and Racks

Mounting internal parts, covers, and placing racks/water bowl.

Smoker Assembly - Cooking Parts

Install Racks, Water Bowl, and Trays

Masterbuilt MPS 330G Specifications

General IconGeneral
BrandMasterbuilt
ModelMPS 330G
Fuel TypePropane
Burner1
BTU15, 000
MaterialSteel
ColorBlack
TypePropane Gas Smoker
Number of Racks/Grates4
Warranty1 year

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