Hi all,
advice please ... have just erected and re-glazed a 6'x6' Greenhouse (free from my Son)
A Jempvent unit is fitted to open the roof vent ... but it is not operating.
If I understand the principle correctly, the oil in the cylinder expands as temperature rises and this pushes the piston 'out' which in turn opens the roof vent.
My question .... what type of oil is used ???
is it 'any light weight oil' like 3 in 1 or special stuff
I would prefer to fix the damaged unit if possible, rather than throwing and spending +/- £30 on a new one
thanks
Mikey