controlling switch part no 31 902 9 make plasser warranty period 30 months after the date of deliv ery controlling switch part no 31 902 9 make plasser warranty period 30 months after the date of deliv ery tumbler switch part no 7101s z make plasser warranty period 30 months after the date of delivery controlling switch part no 31 902 9 make plasser warranty period 30 months after the date of deliv ery tumbler switch part no 7101s z make plasser