What physically happens that a chest freezer is very slow to start?

We have several older Kenmore chest type freezers. We fill and empty them and will shut them off for a month or two, then restart them. when powered up, you can hear that power has been applied to the motor, but the internal circuit breaker will open and close half a dozen times (or more) before they will restart. They all finally do restart, but what is happening inside the motor that is causing them to lockup. I restarted two last night one started after I hit the compressor with a 2" x 4", it could have just been coincidence, but I heard the breaker close and after a couple of hits with the 2" x 4" it started. That dind't help the second one, I gave up walked away for an hour and when I came back it had started. btw, once they start running, they are fine, cool down to the -10 on the display and colder on external thermometers that we use.
So why don't they want to restart?
Thanks, Mikek
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.