seio m620

[robzilla]

just rec'd a new pump for christmas.
question i got is it seems to vibrate when you touch it and it's louder than
the old 301 or mj 900
is this normal? ive disassembled and assembled it, with no difference.

[Edmonton Eskimo]

I just got one and it doesn't vibrate and is completely silent. I would take it back and exchange it.