Elna EK2300 is a bulky gauge (9 mm) knitting machine with 110 needles and 12-stitch repeat punchcard reading capabilities.
It can be matched with Elna ER2350 ribber.
It is identical to the Knitmaster 155, Singer 155, Studio SK155 and Toyota 650 bulky knitting machines.
I have this machine in my possession and will post pictures soon. But in the meantime, refer to the information on these other machines (manuals for which can be easily found online).