Related Clues:

• RBC device
• Bank worker that never takes time off
• $$$ convenience
• RBC cash source
• Bank line bypasser
• Jack-in-the-box device?
• Gas station convenience
• Source of needed dough
• Source of quick cash
• Bank adjunct
• Briefly, a hole-in-the-wall cash machine
• Initially, there's no telling when it's out of order
• Mid-morning tea for cash?
• There's no telling if it won't work
• Where there's 17 across and down, by the sound of it, there's money in it in the morning