Users report that most reusable pens allow dialing the dose back down directly without damage. Some automatic models require removing the cartridge to release the spring before resetting. Disposable pens differ and may not allow dialing down. People confirm through testing that the mechanism handles reverse dialing fine once tried.
What this discussion establisheswhether forcing the dial backward risks breaking the mechanism on certain spring-loaded pens
Nothing here is advice.
Up until now I haven't attempted it, yet I'm concerned I might set the amount higher than planned. If that happens, do I take out the cartridge, press the button, and begin the process once more?
With the hand-operated models I own plus the motorized version, I reduce the amount setting to the proper level right before giving the shot.
This explains my selection of needles. Those cartridge devices seem unreliable to me. As a result concerns never appear.
I'm unsure whether I can turn the setting lower again. This injector uses a spring mechanism, so the adjustment only clicks forward to the amount I want. I avoided pushing it backwards because that might damage the inner parts. It seems like the only way to reset is by using the injection trigger. With my other injectors, changing the amount either way works fine without issues.
Yeah I took the cartridge out first and pushed the button to free up the spring. After that I slotted the cartridge back in and eased it into position while clearing things out the usual way.
I had no trouble reversing the setting to get a smaller amount out.
I agree completely that some folks are just guessing here. I've used a few of these devices that have seen hundreds of injections. Every single one of my pens works the same: turn the selector to the amount you need and press to deliver exactly that. Look at the display to confirm before using, and the way you rotate the control makes no difference for the end result.
It looks like some folks are mixing up the factory single-use injectors with the refillable versions. Those throwaway ones won't let you turn the setting lower again, though you can pause at a midway amount, and there's no way to pull out the container or adjust the mechanism back.
Grateful for the responses. Having extracted my gansulin and run a test, I confirm the ability to turn the setting lower. The spring's resistance had created a false sense that forcing the adjustment might cause harm.
I notice the dials on the powered models feel tighter and need extra effort to turn compared with the hand-operated versions. This stems from winding up the drive spring in advance so it can push the rod forward after the release switch gets pressed.
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