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