(Solved) Vecturo OSC 18 making loud Click sound when it starts

[JINRO]

I just received Vecturo OSC 18 today. Out of the box, turned on for the first time on speed 6.  It started increasing motor sound and LOUD click! sound. 

Tool seems to run fine but this loud Click (Band) sound happens once when I turn on after letting it sit to rest for some time.  Anyone know where this sound is coming from? Is this defective unit?

This doesn't seem to happen if I turn off and on again. Only happens when I let it rest and turn on. First time Click! and seems to be okay.

(Solved) NVM... I think I found out where it's coming from... It's the blade lock opening sound... how naive I was...

 

[_Ben_]

Mine did that first time I tested it without a blade, unnerved me a bit at first.

 

[JINRO]

Mine did that first time I tested it without a blade, unnerved me a bit at first.

Yes, I found out it happened when I didn't have blade installed All good now!