Len,
I'll look up the R&R board. Thanks
John Jay,
Personally, I like the MOVFR units. I'm just not sure I'm ready to send these units to the scrap yard. Although I agree with you that the oil temp in the gear box affects the reliability of these operators. I wasn't aware of the mobile one oil. Thanks for you input.
Rolly,
I also think these are good units. They were built to last. Unfortunately today's advancement have made the use of the checks inadequate & obsolete. Although you and John Jay have indicated mobile one oil will improve stability, there are more options. Wouldn't it be a better made unit if the checks were iliminated and it was designed with a VVVF motor and control?
Thank you for reminding me that there were several versions of the 6970 operator. It just so happens there are 4 with the saturable reactors. The last unit is the resistance version.
Thank you for your responses...
I'm leaning toward recommending modifing the existing operators. These units run constantly from early in the morning to early in the evening. And with all the variables that effect the quality of the doors to open & close, I'm just not convinced that there is a happy medium with check valves in the equation. I've been servicing a operator that was modified with a MCE smart traq for 8 years now. The only things we have had to do is check the motor brushes and the oil level.
I'll let you know where this ends up...
