RV Repair: RV Fridge, refridgeator, burner assembly

Question
I had my RV to a repair center for a check.  One of the items was a one hour labor to clean the refridgeator on gas.(obviously they don't mean the inside of fridge)  What does that mean and can I do this myself?

Answer
TOM
ONE HOUR IS A BIT MUCH FOR WHAT REALLY GETS DONE.
THE CLEANING REFERS TO WORK THAT GETS DONE TO THE BURNER ASSEMBLY. THE BURNER SITS UNDER THE "CHIMNEY" OF THE COOLING UNIT. OVER TIME SOOT FALLS DOWN INTO THE BURNER ASSEMBLY AND BLOCKS THE BURNER, REDUCING THE OUTPUT OF THE FLAME. IN MOST CASES A TECH WILL JUST USE COMPRESSED AIR
TO BLOW OUT THE SOOT...SOMETIMES OTHER THAN AIR, NO OTHER TOOLS ARE ACTUALLY USED. OTHER CASES CALL FOR THE BURNER ASSEMBLY TO BE DISASSEMBLED TO GET TO THE BURNER ORIFICE AND REMOVED DEBRIS FROM IT, THIS CAN TAKE A BIT MORE TIME.
YOU CAN BLOW IT OUT YOURSELF IF YOU HAVE COMPRESSED AIR ,BUT THE WORK TO REMOVE THE ORIFICE MIGHT BE TOO INVOLVED FOR SOME.
BLOWING OUT THE BURNER SHOULD DONE EVERY SEASON.

THOM