Thanks DuMauier 7.
Not sure the age of your pump, since 2002, all pumps were equipped with internal thermal cut-out and it should not burn up when run dry. The trigger point is 85C and re-start at 83C.
The only part that will suffer is the shaft seal, it is a 10-cent item, within the warranty period, we can often replace it free of charge if you send the pump back to us.
Shurflo pump also have a thermal cut-out, set at 65C - if it doesn't, it will suffer the same fate.