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Pitco Fryer High Limit
Pitco SG14R
They say every morning they have to reset the fryer high limit. Told them to make sure it’s off then pull the drain valve. Cleaned debris from capillary bulb and mount. Cleaned bottom of fryer of 2in thick crud. Then cycled fryer at highest setpoint to see if it trips prematurely.
Any other ideas?
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16 Replies
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Did you check if the operating thermostat is properly calibrated?
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I supposed I could have mentioned that. But yes, when I tested at the highest setpoint it cycled properly
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Is this a 24 volt or millivolt model? They use different thermostats and limits.
Make sure that the heating tube is clean internally. Is the bulb on the non-welded side of the clamp. The thermostat is on the welded side and the limit is away from the heating tube. Is the properly clamped in the middle and the cap tube clear of the heating tubes. Make sure to check the thermostat calibration and top set point.
You say that it trips overnight. So what is happening at night. Cleaning crew? Squatter cooking after hours? Setting the max to 375F will prevent that unless you have a bad limit
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I forgot to ask if they accually hear the safety click when they push it. It could just be a loose wire that they disturb when resetting.
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*You need to take temperature readings of the frier oil.
*Look at the thermostat set point normally it’s @ 350*
*Make sure you cycle the frier several time by raising the thermostat and taking temperature readings.
Like refrigeration it’s a slow but the correct way to perform diagnosis
By doing this for able to determine an isolate the component that is bad.
If it’s dirty or clean has no bearing on your readings. Only the product that they are cooking.
We take care a football stadium and it fills with an excessive amount of product in the bottom.
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What is the highest setting on the thermostat? Did you measure the oil temp when the T-stat is all the way to the left, or highest setting?
I got tricked by this once, I changed everything out, new gas valve, high limit, the works, same thing, it would shut off randomly, it would kill the pilot.
Turned out they had the knob all the way, as far as they could to the hottest side and it wasn’t calibrated properly and that was the problem.
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24v setup
Calibration is correct, can’t check calibration unless I’m actually checking oil temperature. Lol
The high limit is on the outside of the bracket. (Good thought, didn’t think of that)
Guy that say he rests it should know the difference between the click and no click. I did check the terminations.
Besides them possibly not turning it off at the controller and then closing the valve when it’s still filling up I can’t think of much else. It all checks out dandy!
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You need to check the oil temp. That’s what controls the high limit.
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After they reset the high limit is it fine throughout the rest of the day, or is this a regular thing; having to reset the high limit?
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Fine for the rest of the day.
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Hey Beef, They wouldn’t be calling the flame rollout as a high limit would they? Do the same thing, but flue or gas pressure problem, burner
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EXACTLY what I was thinking.
Does that fryer have a burner self cleaning system? That’s when an additional gas solenoid valve and a zip tube lights the burners AT THE BURNER ORIFICES behind the control panel.
That system only comes on when the fryer is FIRST TURNED ON and lasts just a few seconds while flames blast straight from each burner’s orifice and down through the burners to burn away any fuzzy/greasy buildup in eack burners’ diffuser screens.
If there’s a problem with that system, a resetable roll-out switch (Klixon-type) will trip.
Would THAT so happen to be what your customer is resetting first thing in the morning?
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Nafets47
It never normal when the high limit pops and customer has to reset it. It’s a quick indicator that something is starting to fail or/has failed. If you took the time to go to the service call take the time to do a thorough job in diagnosis it. With patience and proper tools.
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No that is correct it is not normal that it pops.
But if something consistently is popping it, then I would think that something with the wiring is failing and consistently making the high limit go bad which would give you an area to look for.
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This unit doesn’t have the rollout or self cleaning circuits.
Patience and proper tools are the key to getting things diagnosed. Last thing I went for would be the relay board. Inspection found brittle insulation and after allowing the components to cool I heard a chatter on the relay, with proper voltage. Replaced it. Time will tell.
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Did you ever measure the oil temp?
You heard solid state relay click on a board, in a kitchen?
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