Discuss 1950s IM Power Relay Timer Help for Solenoid Valves in the UK Electrical Forum area at ElectriciansForums.net
Yep, I selected I (interval). It never got to using the timers though. So more a wiring or sequence issue I thinkJust a quick question - did you select the correct timer operation mode - interval on or mode I?
It is only for dc supply you need to connect plus and minus as in the wiring diagram.Hi Marconi. I finally had a chance to wire in the new timers today I was in a bit of a rush and may have got the + & - the wrong way around. The heater wouldn't start so there is an issue. I either need to force the sequence change on the machine or the wiring is not letting it turn on. There is a relay in series with the two timers (- black wires) that allows the heater to start. I ran out of time to trouble fix.
I would appreciate if you could let me know whether switching the + & - between timer pins 2 and 7 would change anything? It seems just for DC it is wired the other way. Everything else appears fine at first glance...
New wiring:
View attachment 97046
New vs Old timers:
View attachment 97047
Timers and relay wiring new vs old:
View attachment 97048
Wiring diagram from the timer manual:
View attachment 97049
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