Question about Rangemaster 110 (Gas) Kitchen Range

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Low gas Flame

I have a customer who has a stock pot range, single 18 " burner, with 2 rings, natural gas fired. Unknown brand, the name plate is missing.

When turning on the burners, the pilot goes out. Then the burners do not ignite. If the burners are turned on slowly, the pilot flame is reduced in size. If hte burners do light, the flame is not as high as the same appliance next in line. The flex supply line seems to be clean as does the regulator, the the 3/4 pipe in the appliance, the manual valves and the burner rings themselves. The regulator was replaced a few months ago, with proper part., Any ideas?

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  • fireguy01 Dec 25, 2007

    I did, When I installed the regulator, I turned it upside down so it would not plug with grease. The bottom, which was the top is clean, no grease. The top, which was the bottom, is greasy. I have had regulators plug w/grease, and usually that is the cause of the problem I am having. I have also had an intermittant gas flow if the regulator vent is plugged. I have also had a similar problem with thermostat valves like the BJWA. If it is temporarily cured by thumping on the valve w/a wrench or screwsriver, it is dirt in the valve. This one has me stumped. I have had 4 & 6 burner ranges open top burners with the tubes plugged with grease. If someone cannot tell me the problem, I will just replace the regulator and the flex supply line.

    Do you of any boards that discuss commercial gas appliances?


  • fireguy01 Dec 30, 2007

    I replaced the regulator in October, so I do not think that is the problem. I do have regulators in stock, so I will replace that regulator tommorrow AM. I just received a gas pressure tester. You cannot have to many tools. I will compare the pressure readings between both bean cookers. I do not know the pressures needed for the different appliances, but will get that from the natural gas suppliers.

    I am not an appliance repair person, fire suppression is my trade. We do have an appliance repair shop, but they do not work on commercial applainces. So by default, my customers call on me to repair thier gas appliances.

    Thanks for helping me.


  • fireguy01 Dec 31, 2007

    I just go back from my Mexican resturant w/the bean cooker problem. The gas test port was frozen in place and would not come out. I removed the center burner ring and the gas valve. I plugged my pressure gauge in and found there was only slightly more than 2 "WC. I lite the pilot and turned on the outer ring. The gauge spiked to 8 " WC, then dropped to 3 "WC. I adjusted the regulator to 5" WC and assmbled the burners. I then had a good flame, steady w/a good soft blue color. The flame was not dancing, but steady. I think my new tool was a good investment. Next time I install a regulator I will check the gas pressure.

    Thanks for the help.




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Check the vent plug on the regulator.

Posted on Dec 25, 2007

  • 1 more comment 
  • anthony james
    anthony james Dec 26, 2007

    fireguy,is the unit lp or nat. gas?I work for hobart and i service these as well.right off the bat i would think its the regulator or vent plugged.what i would check is the gas pressure,with and without all the aplliance that share the main gas line turned on and see if theres a dramatic drop in pressure.i would check and clean all the burners/pilots.the quick disconnect could also be a problem but that would be my last resort.its funny i just serviced a ruby tuesdays rest. and had this similiar problem but it ended out to be the pilot solenoid.any ? let me know.

  • anthony james
    anthony james Dec 30, 2007

    propane pressure should be at least 10 inches of water colum,natrual gas should be 3.5 inches.

  • anthony james
    anthony james Jan 05, 2008

    fireguy glad you solved it.i work for hobart and i can assist you in the future need be.can you rate as solved.thanks.



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