[Shop-talk] To kill a refrigerator

[Chadwick E. Labno]

I would think low voltage would cause the motor to over heat which
may or may not kill it - thermal overload switch should protect it -
but might be worth a try. Calculate the power consumption (watts)
and wire a light bulb of equal wattage in series, this will  reduce the
voltage to (around) half.
Alternately, disable the self defrost timer, provided this box is self 
defrosting.
chad