A relay in the timer 23 will then cut out {HEAD ~ a contact} 231 in the feeding branch to {TAIL ~ the compressor} 11 
A relay in the timer 23 will then cut out { HEAD ~ a contact } 231 in the feeding branch to { TAIL ~ the compressor } 11
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH