In running/working order
Definition 1 of 1
Pro Tip 1/3Machine Context
Often used for machines or systems, implying everything functions as it should. 
The old printer is still in running order, surprisingly.
Pro Tip 2/3Maintenance Implied
Suggests regular checks or repairs to keep something in good condition. 
Regular oil changes will keep your engine in working order.
Pro Tip 3/3Metaphorical Use
Can be used metaphorically for systems or organizations. 
After the restructure, the department was back in running order.