I basically do all the same as stated above:

check seal
turntable
light
temp w/ sippy cup of agui for 1x min-- s/b 110-120F
CHECK FOR RUST!!! Any rust is necessitates hitting it with a baseball bat.

I do not check units not permanent to the structure (built-in).

Dick

__________________
"If con is the opposite of pro, is Congress the opposite of progress?"
Richard Rushing, HCRI
Duncanville, Tx.