Westinghouse, Kelvinator Defrost Timer 6Hour/25Mins - Part # 1760008332Westinghouse, Kelvinator No Frost Fridge Defrost Timer. Part No. 1760008332, Spec # TQ 2001 21. Replaces Part Nos. 1415435, 1431871, FF 3001 21. If your timer has this part number on it, but also includes a two lobe cam on the top of the knob, then you need the part listed here. Invensys or Robertshaw defrost timer which switches for 25 minutes every 6 hours and has an adjustment knob. Contacts rated 5amp, 240Volt, 1 3HP. Motor voltage rating 208