CX312A6 Timer trouble

[BoogWar01]

Hi, my name is Mario James, and I'm a mechanical engineer. I've got two Eagle Timers (CX312A6) that I bought thinking they were new (great external condition) but were actually made in 1987. I need to time a mixer process (bakery). Mixer is wired delta wye, so I have a pair of timers. My problem is that the timers don't work. The batteries which I suppose hold up the volatile memory that stores setpoints and such has stood up for twenty years (still getting rated voltage, Rayovac Lithium BR-2325-BA) but I can't get the keypad to work, it is totally locked out. But they do turn on, and I can set ranges via the dipswitches on the circuit board: it even counted when I first turned it on, to some setpoint that was stored before. The keypad is just locked out. The dealer locally (who I did NOT buy these from) told me that there was a password that needed to be entered, but the manufacturer said no, that it was a frequency problem - we get 50Hz locally (Kingston, Jamaica) but it turned out that that wasn't it either. Of course there is no warranty to get. I can't even take the thing apart to look at it, to see if the membrane pad needs cleaning. Anyone out there with experience with these timers, before I hack them to pieces?

 

[BoogWar01]

I solved the keypad lockout problem...turned out the the contact pad that the membrane switches connect to had shifted due to shipping it seems. Once I opened up the units, wiped the pads they were fine. My problem now is they seem to not be able to do what they are supposed to, and the manual is rather cryptic. I am trying to get a delta wye motor to run on its delta winding first, then its wye coil - sequentially, ie after the delta coil is run for five minutes the wye coil will run for a further eight, then the motor will stop. Do I have to run one timer in 'reverse start mode' to do this (the dealer told me I needed two)? And finally, one would think that the inhibit switch would stop the process as well as the countdown. I just don't hear the contacts let go when I apply current to terminal 1, but the count sure stops. Any help would be appreciated (I'm thinking of writing a blog of these haps, mebbe someone will find it useful...)