pitco frialator

[jeep6275]

hey guys i looked at a frialator today
m#sgh50
s#g06f0025953

this is part of a 3 pot fryer. the customer states that intermitently anyone of the 3 will boom in the morning (i assume delayed ignition) and that it doesnt always seem like it is the same one. only in the morning, and of course i am their in the afternoon.

so i am looking for ideas and maybe a # for pitco, i think these things are still under warranty. another contractor (warranty provider) has been their a couple of times and actually told the owner that the hoods were not drafting correctly and that was causing the problem!?

this seemed like a stretch to me since all other gas appliances are fine.

i plan to check gas pressure and cleanliness of the burners/pilots in the am. just looking for some additional ideas.

tia

jeep

[howardgt]

Clean face of burners. Also clean pilot. These are notorious for "booming". Mesh screen on burner face gets greasy and dirty easily. Pitco actually has a "self cleaning burner kit" for these. Pitco = 800-258-3708.

[Dad]

Jeep

Are these spark ignition?

If so, check your flame rectification polarity. In other words check your electrical outlet and make sure black is hot.

If only one of the three fryers is delaying it can't be a draft issue.

I found this to be a problem some 20 years ago when Dean introduced their spark ignition. They incorporated a lighted power switch that would glow when turned on. It would also glow when off if the polarity were reversed in the 120v outlet. This became a problem when they outsourced their factory power cords to a manuf in Mexico when the wiring was reversed in the molded plug head.

It won't happen all of the time but with the polarity reversed on the incoming power the igniter tends to delay and when it does fire... BOOM

[jeep6275]

so i checked the burners and pilots when i was on site for another call. this time the owner was their. i talked to him about it and betweent he two of us came up with a few things to check.

the next morning he called me and what he found was that the left pot was the only one acting up. the employees hadnt even been able to figure that out!

what he saw was that when the burner was supposed to come on the pilot would go out. as soon as it went out the sparker started sparking. then everything would lite with a big boom! he is going to talk to the other company since they have been their a couple of times but, well see.
i was wondering if the pilot said of the gas valve is actually loosing power from the board right before it opens the main side? that shouldnt be possible with the redundant type valves. but well see.

[cybercontadino]

Not familiar with this model number...Is this SGH-50 a high efficiency fryer or one with cast iron burners with the pilot assy between the burners?
Tried to look up this model online but couldnt find any info.

[jeep6275]

no it is not high efficient. it has electronic ignition for the pilot and the burners are stainless steel. i think when you turn it on the unit lights the pilot. and then it stays on the rest of the day.

[jeep6275]

okay a little update. i stopped in for another problem and talked to the owner. he is sure it is only the left pot. he also is sure that the pilot is getting blown out when the burner tries to light.

is it possible the ignition module is dropping the pilot side of the gas valve out for just a split second? i sat with it for probably 1/2 hr and couldnt get it to act up.

he did tell me that he talked to pitco and they said the gas pressure could be a problem so he had the utility company check/adjust the pressure. apparently it was at 6.75" on natural and they adjusted it to 8".

i checked the manifold pressure and it was at 4.25 so i adjusted it to 4". according to the data plate on the door.

any other ideas would be appreciated.

jeep

[Dad]

I hate beating this in the ground but... that's just what happens when the polarity is reversed.

Even if all of the fryers have the same power cord it is possible that it may be wired wrong in the power junction box. It's easy to test. Pull the 9 pin connector and test white to ground. If you get 120v.. bingo

Read and save this attachment

[jeep6275]

I hate beating this in the ground but... that's just what happens when the polarity is reversed.

Even if all of the fryers have the same power cord it is possible that it may be wired wrong in the power junction box. It's easy to test. Pull the 9 pin connector and test white to ground. If you get 120v.. bingo

Read and save this attachment


only because u are so persistent :D i am printing this off to check.

thanks
jeep

[Dad]

LOL


It may be because I was standing next to one when it happened and splashed 360* oil on me.. I swore I would find out why. I swore some other things too.. :D :D

I had 4 banks of 4 fryers with a center filter in each bank of 4. Found that an apprentice electrician had wired all of the wall plugs reversed. There were two other companies working on them and gave up. After fixing the wall plugs there were no more problems.

Yours may not be the wall plugs but a cross wiring in the fryer...also a poor ground on the flame sensor may cause this but I don't think you have that problem cause it is only once in a while

[joken]

Don't they have only a pilot re-lite? Don't the burners have a couple of ports that direct gas back towards the pilot? Look at it when it's firing and I think you will see what I mean. I had one the other day where a kid was sitting a pan on top the flue and was it ever a sooty mess.